[mips][compiler] Replace remaining mutable reference arguments

Port 2304c194

Change-Id: I0e46424ddb647355d21b1e54cf96b1e5503627ce
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1800572
Auto-Submit: Mu Tao <pamilty@gmail.com>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63716}

src/compiler/backend/mips/code-generator-mips.cc

@@ -269,29 +269,29 @@ FPUCondition FlagsConditionToConditionCmpFPU(bool* predicate,
                                              FlagsCondition condition) {
   switch (condition) {
     case kEqual:
-      predicate = true;
+      *predicate = true;
       return EQ;
     case kNotEqual:
-      predicate = false;
+      *predicate = false;
       return EQ;
     case kUnsignedLessThan:
-      predicate = true;
+      *predicate = true;
       return OLT;
     case kUnsignedGreaterThanOrEqual:
-      predicate = false;
+      *predicate = false;
       return OLT;
     case kUnsignedLessThanOrEqual:
-      predicate = true;
+      *predicate = true;
       return OLE;
     case kUnsignedGreaterThan:
-      predicate = false;
+      *predicate = false;
       return OLE;
     case kUnorderedEqual:
     case kUnorderedNotEqual:
-      predicate = true;
+      *predicate = true;
       break;
     default:
-      predicate = true;
+      *predicate = true;
       break;
   }
   UNREACHABLE();

src/compiler/backend/mips64/code-generator-mips64.cc

@@ -282,29 +282,29 @@ FPUCondition FlagsConditionToConditionCmpFPU(bool* predicate,
                                              FlagsCondition condition) {
   switch (condition) {
     case kEqual:
-      predicate = true;
+      *predicate = true;
       return EQ;
     case kNotEqual:
-      predicate = false;
+      *predicate = false;
       return EQ;
     case kUnsignedLessThan:
-      predicate = true;
+      *predicate = true;
       return OLT;
     case kUnsignedGreaterThanOrEqual:
-      predicate = false;
+      *predicate = false;
       return OLT;
     case kUnsignedLessThanOrEqual:
-      predicate = true;
+      *predicate = true;
       return OLE;
     case kUnsignedGreaterThan:
-      predicate = false;
+      *predicate = false;
       return OLE;
     case kUnorderedEqual:
     case kUnorderedNotEqual:
-      predicate = true;
+      *predicate = true;
       break;
     default:
-      predicate = true;
+      *predicate = true;
       break;
   }
   UNREACHABLE();