Index: lib/Target/Mips/Mips32r6InstrInfo.td
===================================================================
--- lib/Target/Mips/Mips32r6InstrInfo.td
+++ lib/Target/Mips/Mips32r6InstrInfo.td
@@ -77,6 +77,11 @@
 class MINA_S_ENC  : COP1_3R_FM<0b011110, FIELD_FMT_S>;
 class MINA_D_ENC  : COP1_3R_FM<0b011110, FIELD_FMT_D>;
 
+class SELEQZ_S_ENC : COP1_3R_FM<0b110101, FIELD_FMT_S>;
+class SELEQZ_D_ENC : COP1_3R_FM<0b110101, FIELD_FMT_D>;
+class SELNEZ_S_ENC : COP1_3R_FM<0b010111, FIELD_FMT_S>;
+class SELNEZ_D_ENC : COP1_3R_FM<0b010111, FIELD_FMT_D>;
+
 //===----------------------------------------------------------------------===//
 //
 // Instruction Descriptions
@@ -123,6 +128,18 @@
 class MINA_S_DESC : MAX_MIN_DESC_BASE<"mina.s", FGR32Opnd>;
 class MINA_D_DESC : MAX_MIN_DESC_BASE<"mina.d", FGR64Opnd>;
 
+class SELEQNEZ_DESC_BASE<string instr_asm, RegisterOperand FGROpnd> {
+  dag OutOperandList = (outs FGROpnd:$fd);
+  dag InOperandList = (ins FGROpnd:$fs, FGROpnd:$ft);
+  string AsmString = !strconcat(instr_asm, "\t$fd, $fs, $ft");
+  list<dag> Pattern = [];
+}
+
+class SELEQZ_S_DESC : SELEQNEZ_DESC_BASE<"seleqz.s", FGR32Opnd>;
+class SELEQZ_D_DESC : SELEQNEZ_DESC_BASE<"seleqz.d", FGR64Opnd>;
+class SELNEZ_S_DESC : SELEQNEZ_DESC_BASE<"selnez.s", FGR32Opnd>;
+class SELNEZ_D_DESC : SELEQNEZ_DESC_BASE<"selnez.d", FGR64Opnd>;
+
 //===----------------------------------------------------------------------===//
 //
 // Instruction Definitions
@@ -192,10 +209,10 @@
 def RINT_D;
 def RINT_S;
 def SELEQZ;
-def SELEQZ_D;
-def SELEQZ_S;
+def SELEQZ_D : SELEQZ_D_ENC, SELEQZ_D_DESC, ISA_MIPS32R6;
+def SELEQZ_S : SELEQZ_S_ENC, SELEQZ_S_DESC, ISA_MIPS32R6;
 def SELNEZ;
-def SELNEZ_D;
-def SELNEZ_S;
+def SELNEZ_D : SELNEZ_D_ENC, SELNEZ_D_DESC, ISA_MIPS32R6;
+def SELNEZ_S : SELNEZ_S_ENC, SELNEZ_S_DESC, ISA_MIPS32R6;
 def SEL_D : SEL_D_ENC, SEL_D_DESC, ISA_MIPS32R6;
 def SEL_S : SEL_S_ENC, SEL_S_DESC, ISA_MIPS32R6;
Index: test/MC/Mips/mips32r6/valid.s
===================================================================
--- test/MC/Mips/mips32r6/valid.s
+++ test/MC/Mips/mips32r6/valid.s
@@ -18,3 +18,7 @@
         maxa.d  $f0, $f2, $f4    # CHECK: maxa.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x1f]
         mina.s  $f0, $f2, $f4    # CHECK: mina.s $f0, $f2, $f4 # encoding: [0x46,0x04,0x10,0x1e]
         mina.d  $f0, $f2, $f4    # CHECK: mina.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x1e]
+        seleqz.s $f0, $f2, $f4   # CHECK: seleqz.s $f0, $f2, $f4 # encoding: [0x46,0x04,0x10,0x35]
+        seleqz.d $f0, $f2, $f4   # CHECK: seleqz.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x35]
+        selnez.s $f0, $f2, $f4   # CHECK: selnez.s $f0, $f2, $f4 # encoding: [0x46,0x04,0x10,0x17]
+        selnez.d $f0, $f2, $f4   # CHECK: selnez.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x17]
Index: test/MC/Mips/mips64r6/valid.s
===================================================================
--- test/MC/Mips/mips64r6/valid.s
+++ test/MC/Mips/mips64r6/valid.s
@@ -22,3 +22,7 @@
         maxa.d  $f0, $f2, $f4    # CHECK: maxa.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x1f]
         mina.s  $f0, $f2, $f4    # CHECK: mina.s $f0, $f2, $f4 # encoding: [0x46,0x04,0x10,0x1e]
         mina.d  $f0, $f2, $f4    # CHECK: mina.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x1e]
+        seleqz.s $f0, $f2, $f4   # CHECK: seleqz.s $f0, $f2, $f4 # encoding: [0x46,0x04,0x10,0x35]
+        seleqz.d $f0, $f2, $f4   # CHECK: seleqz.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x35]
+        selnez.s $f0, $f2, $f4   # CHECK: selnez.s $f0, $f2, $f4 # encoding: [0x46,0x04,0x10,0x17]
+        selnez.d $f0, $f2, $f4   # CHECK: selnez.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x17]