diff --git a/llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp b/llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
--- a/llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
+++ b/llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
@@ -1649,6 +1649,49 @@
       RegKind = SparcOperand::rk_Special;
       return true;
     }
+
+    // JPS1 extension - aliases for ASRs
+    // Section A.51 - Read State Register
+    if (name.equals("pcr")) {
+      RegNo = Sparc::ASR16;
+      RegKind = SparcOperand::rk_Special;
+      return true;
+    }
+    if (name.equals("pic")) {
+      RegNo = Sparc::ASR17;
+      RegKind = SparcOperand::rk_Special;
+      return true;
+    }
+    if (name.equals("dcr")) {
+      RegNo = Sparc::ASR18;
+      RegKind = SparcOperand::rk_Special;
+      return true;
+    }
+    if (name.equals("gsr")) {
+      RegNo = Sparc::ASR19;
+      RegKind = SparcOperand::rk_Special;
+      return true;
+    }
+    if (name.equals("softint")) {
+      RegNo = Sparc::ASR22;
+      RegKind = SparcOperand::rk_Special;
+      return true;
+    }
+    if (name.equals("tick_cmpr")) {
+      RegNo = Sparc::ASR23;
+      RegKind = SparcOperand::rk_Special;
+      return true;
+    }
+    if (name.equals("stick") || name.equals("sys_tick")) {
+      RegNo = Sparc::ASR24;
+      RegKind = SparcOperand::rk_Special;
+      return true;
+    }
+    if (name.equals("stick_cmpr") || name.equals("sys_tick_cmpr")) {
+      RegNo = Sparc::ASR25;
+      RegKind = SparcOperand::rk_Special;
+      return true;
+    }
   }
   return false;
 }
diff --git a/llvm/lib/Target/Sparc/SparcInstrAliases.td b/llvm/lib/Target/Sparc/SparcInstrAliases.td
--- a/llvm/lib/Target/Sparc/SparcInstrAliases.td
+++ b/llvm/lib/Target/Sparc/SparcInstrAliases.td
@@ -350,6 +350,8 @@
 let EmitPriority = 0 in
 {
   defm : int_cond_alias<"",     0b1000>; // same as a; gnu asm, not in manual
+  defm : int_cond_alias<"gt",   0b1010>; // same as g; gnu asm, not in manual
+  defm : int_cond_alias<"lt",   0b0011>; // same as l; gnu asm, not in manual
   defm : int_cond_alias<"nz",   0b1001>; // same as ne
   defm : int_cond_alias<"eq",   0b0001>; // same as e
   defm : int_cond_alias<"z",    0b0001>; // same as e
@@ -537,6 +539,11 @@
 
 // End of Section A.3
 
+// or imm, reg, rd -> or reg, imm, rd
+// Nonstandard GNU extension.
+let EmitPriority = 0 in
+  def : InstAlias<"or $simm13, $rs1, $rd", (ORri IntRegs:$rd, IntRegs:$rs1, simm13Op:$simm13)>;
+
 // wr reg_or_imm, specialreg -> wr %g0, reg_or_imm, specialreg
 // (aka: omit the first arg when it's g0. This is not in the manual, but is
 // supported by gnu and solaris as)
@@ -579,7 +586,14 @@
 
 def : MnemonicAlias<"stuha", "stha">;
 def : MnemonicAlias<"stsha", "stha">;
+
 def : MnemonicAlias<"stw", "st">, Requires<[HasV9]>;
+def : MnemonicAlias<"stuw", "st">, Requires<[HasV9]>;
+def : MnemonicAlias<"stsw", "st">, Requires<[HasV9]>;
+
+def : MnemonicAlias<"stwa", "sta">, Requires<[HasV9]>;
+def : MnemonicAlias<"stuwa", "sta">, Requires<[HasV9]>;
+def : MnemonicAlias<"stswa", "sta">, Requires<[HasV9]>;
 
 def : MnemonicAlias<"lduw", "ld">, Requires<[HasV9]>;
 def : MnemonicAlias<"lduwa", "lda">, Requires<[HasV9]>;
diff --git a/llvm/test/MC/Sparc/sparc-ctrl-instructions.s b/llvm/test/MC/Sparc/sparc-ctrl-instructions.s
--- a/llvm/test/MC/Sparc/sparc-ctrl-instructions.s
+++ b/llvm/test/MC/Sparc/sparc-ctrl-instructions.s
@@ -79,6 +79,10 @@
         ! CHECK-NEXT:         ! fixup A - offset: 0, value: .BB0, kind: fixup_sparc_br22
         bg .BB0
 
+        ! CHECK: bg .BB0      ! encoding: [0x14,0b10AAAAAA,A,A]
+        ! CHECK-NEXT:         ! fixup A - offset: 0, value: .BB0, kind: fixup_sparc_br22
+        bgt .BB0
+
         ! CHECK: ble .BB0      ! encoding: [0x04,0b10AAAAAA,A,A]
         ! CHECK-NEXT:         ! fixup A - offset: 0, value: .BB0, kind: fixup_sparc_br22
         ble .BB0
@@ -91,6 +95,10 @@
         ! CHECK-NEXT:         ! fixup A - offset: 0, value: .BB0, kind: fixup_sparc_br22
         bl .BB0
 
+        ! CHECK: bl .BB0      ! encoding: [0x06,0b10AAAAAA,A,A]
+        ! CHECK-NEXT:         ! fixup A - offset: 0, value: .BB0, kind: fixup_sparc_br22
+        blt .BB0
+
         ! CHECK: bgu .BB0      ! encoding: [0x18,0b10AAAAAA,A,A]
         ! CHECK-NEXT:         ! fixup A - offset: 0, value: .BB0, kind: fixup_sparc_br22
         bgu .BB0
diff --git a/llvm/test/MC/Sparc/sparc-synthetic-instructions.s b/llvm/test/MC/Sparc/sparc-synthetic-instructions.s
--- a/llvm/test/MC/Sparc/sparc-synthetic-instructions.s
+++ b/llvm/test/MC/Sparc/sparc-synthetic-instructions.s
@@ -163,6 +163,8 @@
         wr %i0, %tbr
         ! CHECK: wr %g0, 5, %tbr                  ! encoding: [0x81,0x98,0x20,0x05]
         wr 5, %tbr
+        ! CHECK: or %g2, 4, %g2                   ! encoding: [0x84,0x10,0xa0,0x04]
+        or 4, %g2, %g2
 
 ! The following tests exercise 'set' in such a way that its output differs
 ! depending on whether targeting V8 or V9.
diff --git a/llvm/test/MC/Sparc/sparcv9-instructions.s b/llvm/test/MC/Sparc/sparcv9-instructions.s
--- a/llvm/test/MC/Sparc/sparcv9-instructions.s
+++ b/llvm/test/MC/Sparc/sparcv9-instructions.s
@@ -495,6 +495,17 @@
 
         ! V9: st %o1, [%o0]             ! encoding: [0xd2,0x22,0x00,0x00]
         stw %o1, [%o0]
+        ! V9: st %o1, [%o0]             ! encoding: [0xd2,0x22,0x00,0x00]
+        stuw %o1, [%o0]
+        ! V9: st %o1, [%o0]             ! encoding: [0xd2,0x22,0x00,0x00]
+        stsw %o1, [%o0]
+
+        ! V9: sta %o2, [%i0+%l6] #ASI_SNF ! encoding: [0xd4,0xa6,0x10,0x76]
+        stwa %o2, [%i0 + %l6] 131
+        ! V9: sta %o2, [%i0+%l6] #ASI_SNF ! encoding: [0xd4,0xa6,0x10,0x76]
+        stuwa %o2, [%i0 + %l6] 131
+        ! V9: sta %o2, [%i0+%l6] #ASI_SNF ! encoding: [0xd4,0xa6,0x10,0x76]
+        stswa %o2, [%i0 + %l6] 131
 
         !! SPARCv9 provides a new variant of ASI-tagged memory accesses.
         ! V9: ldxa [%g2] %asi, %g0    ! encoding: [0xc0,0xd8,0xa0,0x00]