Index: lib/Target/Mips/AsmParser/MipsAsmParser.cpp
===================================================================
--- lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -1095,7 +1095,7 @@
     return expandLoadImm(Inst, IDLoc, Instructions);
   case Mips::LoadImm64Reg:
     if (!isGP64bit()) {
-      Error(IDLoc, "instruction requires a CPU feature not currently enabled");
+      Error(IDLoc, "instruction requires a 64-bit architecture");
       return true;
     }
     return expandLoadImm(Inst, IDLoc, Instructions);
@@ -1177,7 +1177,7 @@
     createShiftOr<0, false>(ImmValue, RegOp.getReg(), IDLoc, Instructions);
   } else if ((ImmValue & (0xffffLL << 48)) == 0) {
     if (!isGP64bit()) {
-      Error(IDLoc, "instruction requires a CPU feature not currently enabled");
+      Error(IDLoc, "instruction requires a 64-bit architecture");
       return true;
     }
 
@@ -1204,7 +1204,7 @@
     createShiftOr<0, true>(ImmValue, RegOp.getReg(), IDLoc, Instructions);
   } else {
     if (!isGP64bit()) {
-      Error(IDLoc, "instruction requires a CPU feature not currently enabled");
+      Error(IDLoc, "instruction requires a 64-bit architecture");
       return true;
     }
 
@@ -1564,9 +1564,9 @@
 void MipsAsmParser::WarnIfAssemblerTemporary(int RegIndex, SMLoc Loc) {
   if ((RegIndex != 0) && ((int)Options.getATRegNum() == RegIndex)) {
     if (RegIndex == 1)
-      Warning(Loc, "Used $at without \".set noat\"");
+      Warning(Loc, "used $at without \".set noat\"");
     else
-      Warning(Loc, Twine("Used $") + Twine(RegIndex) + " with \".set at=$" +
+      Warning(Loc, Twine("used $") + Twine(RegIndex) + " with \".set at=$" +
                        Twine(RegIndex) + "\"");
   }
 }
@@ -1714,7 +1714,7 @@
   int AT = Options.getATRegNum();
   if (AT == 0)
     reportParseError(Loc,
-                     "Pseudo instruction requires $at, which is not available");
+                     "pseudo-instruction requires $at, which is not available");
   return AT;
 }
 
@@ -1834,7 +1834,7 @@
       Val = ((MCE->getValue() + 0x800080008000LL) >> 48) & 0xffff;
       break;
     default:
-      report_fatal_error("Unsupported reloc value!");
+      report_fatal_error("unsupported reloc value");
     }
     return MCConstantExpr::Create(Val, getContext());
   }
@@ -2411,7 +2411,7 @@
   // Check if we have valid mnemonic
   if (!mnemonicIsValid(Name, 0)) {
     Parser.eatToEndOfStatement();
-    return Error(NameLoc, "Unknown instruction");
+    return Error(NameLoc, "unknown instruction");
   }
   // First operand in MCInst is instruction mnemonic.
   Operands.push_back(MipsOperand::CreateToken(Name, NameLoc, *this));
@@ -2472,7 +2472,7 @@
   Parser.Lex();
   // If this is not the end of the statement, report an error.
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected end of statement");
     return false;
   }
   Parser.Lex(); // Consume the EndOfStatement.
@@ -2482,6 +2482,7 @@
 bool MipsAsmParser::parseSetAtDirective() {
   // Line can be .set at - defaults to $1
   // or .set at=$reg
+  // FIXME: AtRegNo should be unsigned
   int AtRegNo;
   getParser().Lex();
   if (getLexer().is(AsmToken::EndOfStatement)) {
@@ -2491,7 +2492,7 @@
   } else if (getLexer().is(AsmToken::Equal)) {
     getParser().Lex(); // Eat the '='.
     if (getLexer().isNot(AsmToken::Dollar)) {
-      reportParseError("unexpected token in statement");
+      reportParseError("unexpected token, expected dollar sign '$'");
       return false;
     }
     Parser.Lex(); // Eat the '$'.
@@ -2501,23 +2502,24 @@
     } else if (Reg.is(AsmToken::Integer)) {
       AtRegNo = Reg.getIntVal();
     } else {
-      reportParseError("unexpected token in statement");
+      reportParseError("unexpected token, expected identifier or integer");
       return false;
     }
 
+    // FIXME: Remove this check (setATReg also checks if AtRegNo < 31).
     if (AtRegNo < 0 || AtRegNo > 31) {
       reportParseError("unexpected token in statement");
       return false;
     }
 
     if (!Options.setATReg(AtRegNo)) {
-      reportParseError("unexpected token in statement");
+      reportParseError("invalid register");
       return false;
     }
     getParser().Lex(); // Eat the register.
 
     if (getLexer().isNot(AsmToken::EndOfStatement)) {
-      reportParseError("unexpected token in statement");
+      reportParseError("unexpected token, expected end of statement");
       return false;
     }
     Parser.Lex(); // Consume the EndOfStatement.
@@ -2532,7 +2534,7 @@
   Parser.Lex();
   // If this is not the end of the statement, report an error.
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected end of statement");
     return false;
   }
   Options.setReorder();
@@ -2545,7 +2547,7 @@
   Parser.Lex();
   // If this is not the end of the statement, report an error.
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected end of statement");
     return false;
   }
   Options.setNoreorder();
@@ -2558,7 +2560,7 @@
   Parser.Lex();
   // If this is not the end of the statement, report an error.
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected end of statement");
     return false;
   }
   Options.setMacro();
@@ -2570,11 +2572,11 @@
   Parser.Lex();
   // If this is not the end of the statement, report an error.
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
-    reportParseError("`noreorder' must be set before `nomacro'");
+    reportParseError("unexpected token, expected end of statement");
     return false;
   }
   if (Options.isReorder()) {
-    reportParseError("`noreorder' must be set before `nomacro'");
+    reportParseError("you must '.set noreorder' before '.set nomacro'");
     return false;
   }
   Options.setNomacro();
@@ -2587,7 +2589,7 @@
 
   // If this is not the end of the statement, report an error.
   if (getLexer().isNot(AsmToken::EndOfStatement))
-    return reportParseError("unexpected token in statement");
+    return reportParseError("unexpected token, expected end of statement");
 
   setFeatureBits(Mips::FeatureMSA, "msa");
   getTargetStreamer().emitDirectiveSetMsa();
@@ -2599,7 +2601,7 @@
 
   // If this is not the end of the statement, report an error.
   if (getLexer().isNot(AsmToken::EndOfStatement))
-    return reportParseError("unexpected token in statement");
+    return reportParseError("unexpected token, expected end of statement");
 
   clearFeatureBits(Mips::FeatureMSA, "msa");
   getTargetStreamer().emitDirectiveSetNoMsa();
@@ -2610,7 +2612,7 @@
   Parser.Lex();
   // If this is not the end of the statement, report an error.
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected end of statement");
     return false;
   }
   // For now do nothing.
@@ -2626,7 +2628,7 @@
   Parser.Lex(); // Eat fp token
   AsmToken Tok = Parser.getTok();
   if (Tok.isNot(AsmToken::Equal)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected equals sign '='");
     return false;
   }
   Parser.Lex(); // Eat '=' token.
@@ -2636,7 +2638,7 @@
     return false;
 
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected end of statement");
     return false;
   }
   getTargetStreamer().emitDirectiveSetFp(FpAbiVal);
@@ -2652,7 +2654,7 @@
     reportParseError("expected identifier after .set");
 
   if (getLexer().isNot(AsmToken::Comma))
-    return reportParseError("unexpected token in .set directive");
+    return reportParseError("unexpected token, expected comma");
   Lex(); // Eat comma
 
   if (Parser.parseExpression(Value))
@@ -2706,7 +2708,7 @@
 bool MipsAsmParser::parseSetFeature(uint64_t Feature) {
   Parser.Lex();
   if (getLexer().isNot(AsmToken::EndOfStatement))
-    return reportParseError("unexpected token in .set directive");
+    return reportParseError("unexpected token, expected end of statement");
 
   switch (Feature) {
   default:
@@ -2826,7 +2828,7 @@
   FuncReg = FuncRegOpnd.getGPR32Reg();
   TmpReg.clear();
 
-  if (!eatComma("expected comma parsing directive"))
+  if (!eatComma("unexpected token, expected comma"))
     return true;
 
   ResTy = ParseAnyRegister(TmpReg);
@@ -2851,7 +2853,7 @@
     Save = SaveOpnd.getGPR32Reg();
   }
 
-  if (!eatComma("expected comma parsing directive"))
+  if (!eatComma("unexpected token, expected comma"))
     return true;
 
   StringRef Name;
@@ -2965,9 +2967,8 @@
       if (getLexer().is(AsmToken::EndOfStatement))
         break;
 
-      // FIXME: Improve diagnostic.
       if (getLexer().isNot(AsmToken::Comma))
-        return Error(L, "unexpected token in directive");
+        return Error(L, "unexpected token, expected comma");
       Parser.Lex();
     }
   }
@@ -2987,7 +2988,8 @@
   getParser().getStreamer().EmitGPRel32Value(Value);
 
   if (getLexer().isNot(AsmToken::EndOfStatement))
-    return Error(getLexer().getLoc(), "unexpected token in directive");
+    return Error(getLexer().getLoc(), 
+                "unexpected token, expected end of statement");
   Parser.Lex(); // Eat EndOfStatement token.
   return false;
 }
@@ -3003,7 +3005,8 @@
   getParser().getStreamer().EmitGPRel64Value(Value);
 
   if (getLexer().isNot(AsmToken::EndOfStatement))
-    return Error(getLexer().getLoc(), "unexpected token in directive");
+    return Error(getLexer().getLoc(), 
+                "unexpected token, expected end of statement");
   Parser.Lex(); // Eat EndOfStatement token.
   return false;
 }
@@ -3013,7 +3016,7 @@
   AsmToken Tok = Parser.getTok();
   // At the moment only identifiers are supported.
   if (Tok.isNot(AsmToken::Identifier)) {
-    Error(Parser.getTok().getLoc(), "unexpected token in .option directive");
+    Error(Parser.getTok().getLoc(), "unexpected token, expected identifier");
     Parser.eatToEndOfStatement();
     return false;
   }
@@ -3025,7 +3028,7 @@
     Parser.Lex();
     if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
       Error(Parser.getTok().getLoc(),
-            "unexpected token in .option pic0 directive");
+            "unexpected token, expected end of statement");
       Parser.eatToEndOfStatement();
     }
     return false;
@@ -3036,14 +3039,14 @@
     Parser.Lex();
     if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
       Error(Parser.getTok().getLoc(),
-            "unexpected token in .option pic2 directive");
+            "unexpected token, expected end of statement");
       Parser.eatToEndOfStatement();
     }
     return false;
   }
 
   // Unknown option.
-  Warning(Parser.getTok().getLoc(), "unknown option in .option directive");
+  Warning(Parser.getTok().getLoc(), "unknown option");
   Parser.eatToEndOfStatement();
   return false;
 }
@@ -3071,7 +3074,7 @@
       clearFeatureBits(Mips::FeatureNoOddSPReg, "nooddspreg");
 
       if (getLexer().isNot(AsmToken::EndOfStatement)) {
-        reportParseError("Expected end of statement");
+        reportParseError("unexpected token, expected end of statement");
         return false;
       }
 
@@ -3086,7 +3089,7 @@
       setFeatureBits(Mips::FeatureNoOddSPReg, "nooddspreg");
 
       if (getLexer().isNot(AsmToken::EndOfStatement)) {
-        reportParseError("Expected end of statement");
+        reportParseError("unexpected token, expected end of statement");
         return false;
       }
 
@@ -3109,7 +3112,7 @@
   MCAsmLexer &Lexer = getLexer();
 
   if (Lexer.isNot(AsmToken::Equal)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected equals sign '='");
     return false;
   }
   Parser.Lex(); // Eat '=' token.
@@ -3119,7 +3122,7 @@
     return false;
 
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
-    reportParseError("unexpected token in statement");
+    reportParseError("unexpected token, expected end of statement");
     return false;
   }
 
@@ -3419,7 +3422,8 @@
   if (IDVal == ".abicalls") {
     getTargetStreamer().emitDirectiveAbiCalls();
     if (Parser.getTok().isNot(AsmToken::EndOfStatement)) {
-      Error(Parser.getTok().getLoc(), "unexpected token in directive");
+      Error(Parser.getTok().getLoc(), 
+            "unexpected token, expected end of statement");
       // Clear line
       Parser.eatToEndOfStatement();
     }
Index: test/MC/Mips/mips-expansions-bad.s
===================================================================
--- test/MC/Mips/mips-expansions-bad.s
+++ test/MC/Mips/mips-expansions-bad.s
@@ -2,5 +2,5 @@
 # RUN: FileCheck %s < %t1
 
         .text
-        li $5, 0x100000000 # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
-        dli $5, 1 # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
+        li $5, 0x100000000 # CHECK: :[[@LINE]]:9: error: instruction requires a 64-bit architecture
+        dli $5, 1 # CHECK: :[[@LINE]]:9: error: instruction requires a 64-bit architecture
Index: test/MC/Mips/mips-noat.s
===================================================================
--- test/MC/Mips/mips-noat.s
+++ test/MC/Mips/mips-noat.s
@@ -12,7 +12,7 @@
 
 test2:
         .set noat
-        lw      $2, 65536($2) # ERROR: mips-noat.s:[[@LINE]]:9: error: Pseudo instruction requires $at, which is not available
+        lw      $2, 65536($2) # ERROR: mips-noat.s:[[@LINE]]:9: error: pseudo-instruction requires $at, which is not available
 
 
 # Can we switch it back on successfully?
@@ -26,4 +26,4 @@
 
 test4:
         .set at=$0
-        lw      $2, 65536($2) # ERROR: mips-noat.s:[[@LINE]]:9: error: Pseudo instruction requires $at, which is not available
+        lw      $2, 65536($2) # ERROR: mips-noat.s:[[@LINE]]:9: error: pseudo-instruction requires $at, which is not available
Index: test/MC/Mips/mips1/invalid-mips5-wrong-error.s
===================================================================
--- test/MC/Mips/mips1/invalid-mips5-wrong-error.s
+++ test/MC/Mips/mips1/invalid-mips5-wrong-error.s
@@ -6,41 +6,41 @@
 # RUN: FileCheck %s < %t1
 
 	.set noat
-        abs.ps    $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        add.ps    $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        alnv.ps   $f12,$f18,$f30,$t0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.eq.ps   $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.f.ps    $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.le.ps   $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.lt.ps   $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.nge.ps  $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngl.ps  $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngle.ps $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngt.ps  $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ole.ps  $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.olt.ps  $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.seq.ps  $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.sf.ps   $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ueq.ps  $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ule.ps  $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ult.ps  $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.un.ps   $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.ps.s  $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.s.pl  $f30,$f1            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.s.pu  $f14,$f25           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        madd.ps   $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mov.ps    $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movf.ps   $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movn.ps   $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movt.ps   $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movz.ps   $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        msub.ps   $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mul.ps    $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        neg.ps    $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmadd.ps  $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmsub.ps  $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pll.ps    $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        plu.ps    $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pul.ps    $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        puu.ps    $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        sub.ps    $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        abs.ps    $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        add.ps    $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        alnv.ps   $f12,$f18,$f30,$t0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.eq.ps   $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.f.ps    $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.le.ps   $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.lt.ps   $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.nge.ps  $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngl.ps  $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngle.ps $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngt.ps  $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ole.ps  $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.olt.ps  $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.seq.ps  $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.sf.ps   $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ueq.ps  $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ule.ps  $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ult.ps  $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.un.ps   $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.ps.s  $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.s.pl  $f30,$f1            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.s.pu  $f14,$f25           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        madd.ps   $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mov.ps    $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movf.ps   $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movn.ps   $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movt.ps   $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movz.ps   $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        msub.ps   $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mul.ps    $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        neg.ps    $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmadd.ps  $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmsub.ps  $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pll.ps    $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        plu.ps    $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pul.ps    $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        puu.ps    $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        sub.ps    $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips2/invalid-mips5-wrong-error.s
===================================================================
--- test/MC/Mips/mips2/invalid-mips5-wrong-error.s
+++ test/MC/Mips/mips2/invalid-mips5-wrong-error.s
@@ -6,41 +6,41 @@
 # RUN: FileCheck %s < %t1
 
 	.set noat
-        abs.ps    $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        add.ps    $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        alnv.ps   $f12,$f18,$f30,$t0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.eq.ps   $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.f.ps    $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.le.ps   $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.lt.ps   $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.nge.ps  $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngl.ps  $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngle.ps $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngt.ps  $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ole.ps  $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.olt.ps  $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.seq.ps  $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.sf.ps   $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ueq.ps  $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ule.ps  $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ult.ps  $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.un.ps   $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.ps.s  $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.s.pl  $f30,$f1            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.s.pu  $f14,$f25           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        madd.ps   $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mov.ps    $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movf.ps   $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movn.ps   $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movt.ps   $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movz.ps   $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        msub.ps   $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mul.ps    $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        neg.ps    $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmadd.ps  $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmsub.ps  $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pll.ps    $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        plu.ps    $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pul.ps    $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        puu.ps    $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        sub.ps    $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        abs.ps    $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        add.ps    $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        alnv.ps   $f12,$f18,$f30,$t0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.eq.ps   $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.f.ps    $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.le.ps   $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.lt.ps   $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.nge.ps  $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngl.ps  $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngle.ps $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngt.ps  $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ole.ps  $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.olt.ps  $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.seq.ps  $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.sf.ps   $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ueq.ps  $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ule.ps  $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ult.ps  $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.un.ps   $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.ps.s  $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.s.pl  $f30,$f1            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.s.pu  $f14,$f25           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        madd.ps   $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mov.ps    $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movf.ps   $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movn.ps   $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movt.ps   $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movz.ps   $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        msub.ps   $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mul.ps    $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        neg.ps    $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmadd.ps  $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmsub.ps  $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pll.ps    $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        plu.ps    $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pul.ps    $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        puu.ps    $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        sub.ps    $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips3/invalid-mips5-wrong-error.s
===================================================================
--- test/MC/Mips/mips3/invalid-mips5-wrong-error.s
+++ test/MC/Mips/mips3/invalid-mips5-wrong-error.s
@@ -6,41 +6,41 @@
 # RUN: FileCheck %s < %t1
 
 	.set noat
-        abs.ps    $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        add.ps    $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        alnv.ps   $f12,$f18,$f30,$t0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.eq.ps   $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.f.ps    $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.le.ps   $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.lt.ps   $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.nge.ps  $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngl.ps  $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngle.ps $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngt.ps  $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ole.ps  $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.olt.ps  $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.seq.ps  $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.sf.ps   $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ueq.ps  $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ule.ps  $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ult.ps  $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.un.ps   $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.ps.s  $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.s.pl  $f30,$f1            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.s.pu  $f14,$f25           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        madd.ps   $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mov.ps    $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movf.ps   $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movn.ps   $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movt.ps   $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movz.ps   $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        msub.ps   $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mul.ps    $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        neg.ps    $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmadd.ps  $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmsub.ps  $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pll.ps    $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        plu.ps    $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pul.ps    $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        puu.ps    $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        sub.ps    $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        abs.ps    $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        add.ps    $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        alnv.ps   $f12,$f18,$f30,$t0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.eq.ps   $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.f.ps    $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.le.ps   $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.lt.ps   $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.nge.ps  $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngl.ps  $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngle.ps $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngt.ps  $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ole.ps  $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.olt.ps  $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.seq.ps  $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.sf.ps   $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ueq.ps  $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ule.ps  $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ult.ps  $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.un.ps   $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.ps.s  $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.s.pl  $f30,$f1            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.s.pu  $f14,$f25           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        madd.ps   $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mov.ps    $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movf.ps   $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movn.ps   $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movt.ps   $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movz.ps   $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        msub.ps   $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mul.ps    $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        neg.ps    $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmadd.ps  $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmsub.ps  $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pll.ps    $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        plu.ps    $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pul.ps    $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        puu.ps    $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        sub.ps    $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips32r6/invalid-mips1-wrong-error.s
===================================================================
--- test/MC/Mips/mips32r6/invalid-mips1-wrong-error.s
+++ test/MC/Mips/mips32r6/invalid-mips1-wrong-error.s
@@ -5,13 +5,13 @@
 # RUN: FileCheck %s < %t1
 
 	.set noat
-        bc2f      4                   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2t      4                   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        bc2f      4                   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2t      4                   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
         lwl       $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         lwr       $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         swl       $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         swr       $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
-        lwle      $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        lwre      $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        swle      $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        swre      $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        lwle      $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        lwre      $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        swle      $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        swre      $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips32r6/invalid-mips2-wrong-error.s
===================================================================
--- test/MC/Mips/mips32r6/invalid-mips2-wrong-error.s
+++ test/MC/Mips/mips32r6/invalid-mips2-wrong-error.s
@@ -6,15 +6,15 @@
 # RUN: FileCheck %s < %t1
 
         .set noat
-        beql $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgezall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgtzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        blezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bltzall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bltzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bnel $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        beql $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgezall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgtzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        blezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bltzall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bltzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bnel $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips32r6/invalid-mips32-wrong-error.s
===================================================================
--- test/MC/Mips/mips32r6/invalid-mips32-wrong-error.s
+++ test/MC/Mips/mips32r6/invalid-mips32-wrong-error.s
@@ -6,15 +6,15 @@
 # RUN: FileCheck %s < %t1
 
         .set noat
-        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1tl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1fl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2f  4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2f  $fcc0,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2t  4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2t  $fcc0,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2tl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2fl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1tl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1fl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2f  4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2f  $fcc0,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2t  4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2t  $fcc0,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2tl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2fl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips32r6/invalid-mips4-wrong-error.s
===================================================================
--- test/MC/Mips/mips32r6/invalid-mips4-wrong-error.s
+++ test/MC/Mips/mips32r6/invalid-mips4-wrong-error.s
@@ -6,16 +6,16 @@
 # RUN: FileCheck %s < %t1
 
         .set noat
-        beql $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgezall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgtzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        blezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bltzall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bltzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bnel $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        prefx 0,$2($31)         # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        beql $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgezall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgtzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        blezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bltzall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bltzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bnel $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        prefx 0,$2($31)         # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips32r6/invalid-mips5-wrong-error.s
===================================================================
--- test/MC/Mips/mips32r6/invalid-mips5-wrong-error.s
+++ test/MC/Mips/mips32r6/invalid-mips5-wrong-error.s
@@ -5,7 +5,7 @@
 # RUN: FileCheck %s < %t1
 
 	.set noat
-        bc1any2f  $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1any2t  $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1any4f  $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1any4t  $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        bc1any2f  $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1any2t  $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1any4f  $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1any4t  $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips4/invalid-mips5-wrong-error.s
===================================================================
--- test/MC/Mips/mips4/invalid-mips5-wrong-error.s
+++ test/MC/Mips/mips4/invalid-mips5-wrong-error.s
@@ -6,41 +6,41 @@
 # RUN: FileCheck %s < %t1
 
 	.set noat
-        abs.ps    $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        add.ps    $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        alnv.ps   $f12,$f18,$f30,$t0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.eq.ps   $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.f.ps    $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.le.ps   $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.lt.ps   $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.nge.ps  $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngl.ps  $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngle.ps $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngt.ps  $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ole.ps  $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.olt.ps  $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.seq.ps  $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.sf.ps   $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ueq.ps  $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ule.ps  $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ult.ps  $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.un.ps   $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.ps.s  $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.s.pl  $f30,$f1            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.s.pu  $f14,$f25           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        madd.ps   $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mov.ps    $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movf.ps   $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movn.ps   $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movt.ps   $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movz.ps   $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        msub.ps   $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mul.ps    $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        neg.ps    $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmadd.ps  $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmsub.ps  $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pll.ps    $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        plu.ps    $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pul.ps    $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        puu.ps    $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        sub.ps    $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        abs.ps    $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        add.ps    $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        alnv.ps   $f12,$f18,$f30,$t0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.eq.ps   $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.f.ps    $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.le.ps   $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.lt.ps   $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.nge.ps  $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngl.ps  $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngle.ps $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngt.ps  $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ole.ps  $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.olt.ps  $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.seq.ps  $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.sf.ps   $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ueq.ps  $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ule.ps  $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ult.ps  $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.un.ps   $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.ps.s  $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.s.pl  $f30,$f1            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.s.pu  $f14,$f25           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        madd.ps   $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mov.ps    $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movf.ps   $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movn.ps   $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movt.ps   $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movz.ps   $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        msub.ps   $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mul.ps    $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        neg.ps    $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmadd.ps  $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmsub.ps  $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pll.ps    $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        plu.ps    $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pul.ps    $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        puu.ps    $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        sub.ps    $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips64r6/invalid-mips1-wrong-error.s
===================================================================
--- test/MC/Mips/mips64r6/invalid-mips1-wrong-error.s
+++ test/MC/Mips/mips64r6/invalid-mips1-wrong-error.s
@@ -5,13 +5,13 @@
 # RUN: FileCheck %s < %t1
 
 	.set noat
-        bc2f      4                   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2t      4                   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        bc2f      4                   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2t      4                   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
         lwl       $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         lwr       $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         swl       $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         swr       $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
-        lwle      $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        lwre      $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        swle      $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        swre      $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        lwle      $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        lwre      $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        swle      $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        swre      $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips64r6/invalid-mips3-wrong-error.s
===================================================================
--- test/MC/Mips/mips64r6/invalid-mips3-wrong-error.s
+++ test/MC/Mips/mips64r6/invalid-mips3-wrong-error.s
@@ -9,15 +9,15 @@
         ldr       $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         sdl       $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         sdr       $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
-        ldle      $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        ldre      $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        sdle      $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        sdre      $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        ldle      $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        ldre      $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        sdle      $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        sdre      $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
         lwl       $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         lwr       $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         swl       $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
         swr       $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
-        lwle      $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        lwre      $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        swle      $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        swre      $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        lwle      $s4,-4231($15)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        lwre      $zero,-19147($gp)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        swle      $15,13694($s3)      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        swre      $s1,-26590($14)     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips64r6/invalid-mips32-wrong-error.s
===================================================================
--- test/MC/Mips/mips64r6/invalid-mips32-wrong-error.s
+++ test/MC/Mips/mips64r6/invalid-mips32-wrong-error.s
@@ -6,15 +6,15 @@
 # RUN: FileCheck %s < %t1
 
         .set noat
-        bc1fl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1tl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2f  $fcc0,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2f  4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2fl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2t  $fcc0,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2t  4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2tl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        bc1fl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1tl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2f  $fcc0,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2f  4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2fl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2t  $fcc0,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2t  4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2tl $fcc1,4           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips64r6/invalid-mips4-wrong-error.s
===================================================================
--- test/MC/Mips/mips64r6/invalid-mips4-wrong-error.s
+++ test/MC/Mips/mips64r6/invalid-mips4-wrong-error.s
@@ -6,16 +6,16 @@
 # RUN: FileCheck %s < %t1
 
         .set noat
-        beql $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgezall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bgtzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        blezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bltzall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bltzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bnel $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        prefx 0,$2($31)         # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        beql $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgezall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bgtzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        blezl $3,8              # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bltzall $3,8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bltzl $4,16             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bnel $1,$2,4            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2tl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc2fl 4                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        prefx 0,$2($31)         # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips64r6/invalid-mips5-wrong-error.s
===================================================================
--- test/MC/Mips/mips64r6/invalid-mips5-wrong-error.s
+++ test/MC/Mips/mips64r6/invalid-mips5-wrong-error.s
@@ -5,44 +5,44 @@
 # RUN: FileCheck %s < %t1
 
 	.set noat
-        abs.ps          $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        add.ps          $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        alnv.ps         $f12,$f18,$f30,$12  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1any2f        $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1any2t        $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1any4f        $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        bc1any4t        $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.eq.ps         $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.f.ps          $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.le.ps         $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.lt.ps         $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.nge.ps        $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngl.ps        $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngle.ps       $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ngt.ps        $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ole.ps        $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.olt.ps        $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.seq.ps        $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.sf.ps         $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ueq.ps        $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ule.ps        $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.ult.ps        $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        c.un.ps         $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.ps.s        $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        cvt.ps.pw       $f3,$f18            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        madd.ps         $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mov.ps          $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movf.ps         $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movn.ps         $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movt.ps         $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        movz.ps         $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        msub.ps         $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        mul.ps          $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        neg.ps          $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmadd.ps        $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        nmsub.ps        $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pll.ps          $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        plu.ps          $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        pul.ps          $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        puu.ps          $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
-        sub.ps          $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        abs.ps          $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        add.ps          $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        alnv.ps         $f12,$f18,$f30,$12  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1any2f        $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1any2t        $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1any4f        $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        bc1any4t        $fcc2,4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.eq.ps         $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.f.ps          $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.le.ps         $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.lt.ps         $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.nge.ps        $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngl.ps        $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngle.ps       $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ngt.ps        $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ole.ps        $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.olt.ps        $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.seq.ps        $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.sf.ps         $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ueq.ps        $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ule.ps        $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.ult.ps        $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        c.un.ps         $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.ps.s        $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        cvt.ps.pw       $f3,$f18            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        madd.ps         $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mov.ps          $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movf.ps         $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movn.ps         $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movt.ps         $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        movz.ps         $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        msub.ps         $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        mul.ps          $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        neg.ps          $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmadd.ps        $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        nmsub.ps        $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pll.ps          $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        plu.ps          $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        pul.ps          $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        puu.ps          $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
+        sub.ps          $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
Index: test/MC/Mips/mips_directives_bad.s
===================================================================
--- test/MC/Mips/mips_directives_bad.s
+++ test/MC/Mips/mips_directives_bad.s
@@ -2,7 +2,7 @@
 # RUN: not llvm-mc -triple mips-unknown-unknown %s 2>&1 | FileCheck %s
 
     .abicalls should have no operands
-# CHECK:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in directive
+# CHECK:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected end of statement
 # CHECK-NEXT:    .abicalls should have no operands
 # CHECK-NEXT:              ^
 
@@ -12,48 +12,48 @@
 
 # Blank option operand
     .option 
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in .option directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected identifier
 # CHECK-NEXT:    .option 
 # CHECK-NEXT:            ^
 
 # Numeric option operand
     .option 2
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in .option directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected identifier
 # CHECK-NEXT:    .option 2
 # CHECK-NEXT:            ^
 
 # Register option operand
     .option $2
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in .option directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected identifier
 # CHECK-NEXT:    .option $2
 # CHECK-NEXT:            ^
 
     .option WithBadOption
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: warning: unknown option in .option directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: warning: unknown option
 # CHECK-NEXT:    .option WithBadOption
 # CHECK-NEXT:            ^
 
     .option pic0,
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in .option pic0 directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected end of statement
 # CHECK-NEXT:    .option pic0,
 # CHECK-NEXT:                ^
 
     .option pic0,pic2
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in .option pic0 directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected end of statement
 # CHECK-NEXT:    .option pic0,pic2
 # CHECK-NEXT:                ^
 
     .option pic0 pic2
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in .option pic0 directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected end of statement
 # CHECK-NEXT:    .option pic0 pic2
 # CHECK-NEXT:                 ^
 
     .option pic2,
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in .option pic2 directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected end of statement
 # CHECK-NEXT:    .option pic2,
 # CHECK-NEXT:                ^
 
     .option pic2 pic3
-# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token in .option pic2 directive
+# CHECK-NEXT:    :{{[0-9]+}}:{{[0-9]+}}: error: unexpected token, expected end of statement
 # CHECK-NEXT:    .option pic2 pic3
 # CHECK-NEXT:                 ^
Index: test/MC/Mips/set-at-directive-explicit-at.s
===================================================================
--- test/MC/Mips/set-at-directive-explicit-at.s
+++ test/MC/Mips/set-at-directive-explicit-at.s
@@ -7,15 +7,15 @@
     .text
 foo:
 # CHECK:   jr    $1                      # encoding: [0x08,0x00,0x20,0x00]
-# WARNINGS: :[[@LINE+2]]:11: warning: Used $at without ".set noat"
+# WARNINGS: :[[@LINE+2]]:11: warning: used $at without ".set noat"
     .set    at=$1
     jr    $at
 
 # CHECK:   jr    $1                      # encoding: [0x08,0x00,0x20,0x00]
-# WARNINGS: :[[@LINE+2]]:11: warning: Used $at without ".set noat"
+# WARNINGS: :[[@LINE+2]]:11: warning: used $at without ".set noat"
     .set    at=$1
     jr    $1
-# WARNINGS-NOT: warning: Used $at without ".set noat"
+# WARNINGS-NOT: warning: used $at without ".set noat"
 
 # CHECK:   jr    $1                      # encoding: [0x08,0x00,0x20,0x00]
     .set    at=$2
@@ -31,12 +31,12 @@
     jr    $at
 
 # CHECK:   jr    $16                     # encoding: [0x08,0x00,0x00,0x02]
-# WARNINGS: :[[@LINE+2]]:11: warning: Used $16 with ".set at=$16"
+# WARNINGS: :[[@LINE+2]]:11: warning: used $16 with ".set at=$16"
     .set    at=$16
     jr    $s0
 
 # CHECK:   jr    $16                     # encoding: [0x08,0x00,0x00,0x02]
-# WARNINGS: :[[@LINE+2]]:11: warning: Used $16 with ".set at=$16"
+# WARNINGS: :[[@LINE+2]]:11: warning: used $16 with ".set at=$16"
     .set    at=$16
     jr    $16
 # WARNINGS-NOT: warning