MIPS:[turbofan] Improve boolean materialization compares.

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

Index: src/compiler/mips64/instruction-selector-mips64.cc
diff --git a/src/compiler/mips64/instruction-selector-mips64.cc b/src/compiler/mips64/instruction-selector-mips64.cc
index 838b263d687e86f636e25e1a03d49f3d7af69325..9c0473f309193a8d68f7c85d6a0d9a28dd4737b7 100644
--- a/src/compiler/mips64/instruction-selector-mips64.cc
+++ b/src/compiler/mips64/instruction-selector-mips64.cc
@@ -967,12 +967,32 @@ void VisitWordCompare(InstructionSelector* selector, Node* node,
 
   // Match immediates on left or right side of comparison.
   if (g.CanBeImmediate(right, opcode)) {
-    VisitCompare(selector, opcode, g.UseRegister(left), g.UseImmediate(right),
-                 cont);
+    switch (cont->condition()) {
+      case kSignedLessThan:
+      case kSignedGreaterThanOrEqual:
+      case kUnsignedLessThan:
+      case kUnsignedGreaterThanOrEqual:
+        VisitCompare(selector, opcode, g.UseRegister(left),
+                     g.UseImmediate(right), cont);
+        break;
+      default:
+        VisitCompare(selector, opcode, g.UseRegister(left),
+                     g.UseRegister(right), cont);
+    }
   } else if (g.CanBeImmediate(left, opcode)) {
     if (!commutative) cont->Commute();
-    VisitCompare(selector, opcode, g.UseRegister(right), g.UseImmediate(left),
-                 cont);
+    switch (cont->condition()) {
+      case kSignedLessThan:
+      case kSignedGreaterThanOrEqual:
+      case kUnsignedLessThan:
+      case kUnsignedGreaterThanOrEqual:
+        VisitCompare(selector, opcode, g.UseRegister(right),
+                     g.UseImmediate(left), cont);
+        break;
+      default:
+        VisitCompare(selector, opcode, g.UseRegister(right),
+                     g.UseRegister(left), cont);
+    }
   } else {
     VisitCompare(selector, opcode, g.UseRegister(left), g.UseRegister(right),
                  cont);