MIPS: 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 1289 matching lines @@
         frame_access_state()->IncreaseSPDelta(1);
       }
       break;
     case kMipsStackClaim: {
       __ Subu(sp, sp, Operand(i.InputInt32(0)));
       frame_access_state()->IncreaseSPDelta(i.InputInt32(0) / kPointerSize);
       break;
     }
     case kMipsStoreToStackSlot: {
       if (instr->InputAt(0)->IsFPRegister()) {
-        __ sdc1(i.InputDoubleRegister(0), MemOperand(sp, i.InputInt32(1)));
+        LocationOperand* op = LocationOperand::cast(instr->InputAt(0));
+        if (op->representation() == MachineRepresentation::kFloat64) {
+          __ sdc1(i.InputDoubleRegister(0), MemOperand(sp, i.InputInt32(1)));
+        } else {
+          DCHECK_EQ(MachineRepresentation::kFloat32, op->representation());
+          __ swc1(i.InputSingleRegister(0), MemOperand(sp, i.InputInt32(1)));
+        }
       } else {
         __ sw(i.InputRegister(0), MemOperand(sp, i.InputInt32(1)));
       }
       break;
     }
     case kCheckedLoadInt8:
       ASSEMBLE_CHECKED_LOAD_INTEGER(lb);
       break;
     case kCheckedLoadUint8:
       ASSEMBLE_CHECKED_LOAD_INTEGER(lbu);
@@ skipping 671 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8