MIPS[64]: Fix `[turbofan] Further optimize DataView accesses.`

Fix 5fecd146

Word32ReverseBytes and Word64ReverseBytes are mandatory
so their definition is removed from list of optional operators
in InstructionSelector::SupportedMachineOperatorFlags

Change-Id: I997fca1da6fcb69d1d6190a5ff68f3ff1f201b45
Reviewed-on: https://chromium-review.googlesource.com/1175129
Commit-Queue: Ivica Bogosavljevic <ibogosavljevic@wavecomp.com>
Commit-Queue: Sreten Kovacevic <skovacevic@wavecomp.com>
Reviewed-by: Sreten Kovacevic <skovacevic@wavecomp.com>
Cr-Commit-Position: refs/heads/master@{#55137}

src/compiler/mips/instruction-selector-mips.cc

@@ -2216,9 +2216,7 @@ InstructionSelector::SupportedMachineOperatorFlags() {
          MachineOperatorBuilder::kFloat32RoundDown |
          MachineOperatorBuilder::kFloat32RoundUp |
          MachineOperatorBuilder::kFloat32RoundTruncate |
-         MachineOperatorBuilder::kFloat32RoundTiesEven |
-         MachineOperatorBuilder::kWord32ReverseBytes |
-         MachineOperatorBuilder::kWord64ReverseBytes;
+         MachineOperatorBuilder::kFloat32RoundTiesEven;
 }
 
 // static

src/compiler/mips64/instruction-selector-mips64.cc

@@ -2897,9 +2897,7 @@ InstructionSelector::SupportedMachineOperatorFlags() {
          MachineOperatorBuilder::kFloat64RoundTruncate |
          MachineOperatorBuilder::kFloat32RoundTruncate |
          MachineOperatorBuilder::kFloat64RoundTiesEven |
-         MachineOperatorBuilder::kFloat32RoundTiesEven |
-         MachineOperatorBuilder::kWord32ReverseBytes |
-         MachineOperatorBuilder::kWord64ReverseBytes;
+         MachineOperatorBuilder::kFloat32RoundTiesEven;
 }
 
 // static