MIPS: Fix 'Fix Turbofan: Modify WASM linkage to store floats using only 4 bytes.'

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

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
@@ skipping 1875 matching lines @@
       FPURegister dst = g.ToDoubleRegister(destination);
       __ Move(dst, src);
     } else {
       DCHECK(destination->IsFPStackSlot());
       __ sdc1(src, g.ToMemOperand(destination));
     }
   } else if (source->IsFPStackSlot()) {
     DCHECK(destination->IsFPRegister() || destination->IsFPStackSlot());
     MemOperand src = g.ToMemOperand(source);
     if (destination->IsFPRegister()) {
-      __ ldc1(g.ToDoubleRegister(destination), src);
+      LocationOperand* op = LocationOperand::cast(source);
+      if (op->representation() == MachineRepresentation::kFloat64) {
+        __ ldc1(g.ToDoubleRegister(destination), src);
+      } else {
+        DCHECK_EQ(MachineRepresentation::kFloat32, op->representation());
+        __ lwc1(g.ToDoubleRegister(destination), src);
+      }
     } else {
       FPURegister temp = kScratchDoubleReg;
       __ ldc1(temp, src);
       __ sdc1(temp, g.ToMemOperand(destination));
     }
   } else {
     UNREACHABLE();
   }
 }
 
@@ skipping 91 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8