MIPS: ARM: Fast path for integer inputs to EmitVFPTruncate

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index 85497b5fc3bb2b3f9b4bd5abd30e8578e84faec8..c69cf92172032cd80870ffc250808a46ec861339 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -3695,6 +3695,7 @@ static void GenerateSmiKeyCheck(MacroAssembler* masm,
                                 Register scratch0,
                                 Register scratch1,
                                 FPURegister double_scratch0,
+                                FPURegister double_scratch1,
                                 Label* fail) {
   if (CpuFeatures::IsSupported(FPU)) {
     CpuFeatures::Scope scope(FPU);
@@ -3710,15 +3711,15 @@ static void GenerateSmiKeyCheck(MacroAssembler* masm,
                 DONT_DO_SMI_CHECK);
     __ ldc1(double_scratch0, FieldMemOperand(key, HeapNumber::kValueOffset));
     __ EmitFPUTruncate(kRoundToZero,
-                       double_scratch0,
-                       double_scratch0,
                        scratch0,
+                       double_scratch0,
+                       at,
+                       double_scratch1,
                        scratch1,
                        kCheckForInexactConversion);
 
     __ Branch(fail, ne, scratch1, Operand(zero_reg));
 
-    __ mfc1(scratch0, double_scratch0);
     __ SmiTagCheckOverflow(key, scratch0, scratch1);
     __ BranchOnOverflow(fail, scratch1);
     __ bind(&key_ok);
@@ -3746,7 +3747,7 @@ void KeyedLoadStubCompiler::GenerateLoadExternalArray(
   // have been verified by the caller to not be a smi.
 
   // Check that the key is a smi or a heap number convertible to a smi.
-  GenerateSmiKeyCheck(masm, key, t0, t1, f2, &miss_force_generic);
+  GenerateSmiKeyCheck(masm, key, t0, t1, f2, f4, &miss_force_generic);
 
   __ lw(a3, FieldMemOperand(receiver, JSObject::kElementsOffset));
   // a3: elements array
@@ -4088,7 +4089,7 @@ void KeyedStoreStubCompiler::GenerateStoreExternalArray(
   // have been verified by the caller to not be a smi.
 
   // Check that the key is a smi or a heap number convertible to a smi.
-  GenerateSmiKeyCheck(masm, key, t0, t1, f2, &miss_force_generic);
+  GenerateSmiKeyCheck(masm, key, t0, t1, f2, f4, &miss_force_generic);
 
   __ lw(a3, FieldMemOperand(receiver, JSObject::kElementsOffset));
 
@@ -4477,7 +4478,7 @@ void KeyedLoadStubCompiler::GenerateLoadFastElement(MacroAssembler* masm) {
   // have been verified by the caller to not be a smi.
 
   // Check that the key is a smi or a heap number convertible to a smi.
-  GenerateSmiKeyCheck(masm, a0, t0, t1, f2, &miss_force_generic);
+  GenerateSmiKeyCheck(masm, a0, t0, t1, f2, f4, &miss_force_generic);
 
   // Get the elements array.
   __ lw(a2, FieldMemOperand(a1, JSObject::kElementsOffset));
@@ -4528,7 +4529,7 @@ void KeyedLoadStubCompiler::GenerateLoadFastDoubleElement(
   // have been verified by the caller to not be a smi.
 
   // Check that the key is a smi or a heap number convertible to a smi.
-  GenerateSmiKeyCheck(masm, key_reg, t0, t1, f2, &miss_force_generic);
+  GenerateSmiKeyCheck(masm, key_reg, t0, t1, f2, f4, &miss_force_generic);
 
   // Get the elements array.
   __ lw(elements_reg,
@@ -4602,7 +4603,7 @@ void KeyedStoreStubCompiler::GenerateStoreFastElement(
   // have been verified by the caller to not be a smi.
 
   // Check that the key is a smi or a heap number convertible to a smi.
-  GenerateSmiKeyCheck(masm, key_reg, t0, t1, f2, &miss_force_generic);
+  GenerateSmiKeyCheck(masm, key_reg, t0, t1, f2, f4, &miss_force_generic);
 
   if (IsFastSmiElementsKind(elements_kind)) {
     __ JumpIfNotSmi(value_reg, &transition_elements_kind);
@@ -4769,7 +4770,7 @@ void KeyedStoreStubCompiler::GenerateStoreFastDoubleElement(
   // have been verified by the caller to not be a smi.
 
   // Check that the key is a smi or a heap number convertible to a smi.
-  GenerateSmiKeyCheck(masm, key_reg, t0, t1, f2, &miss_force_generic);
+  GenerateSmiKeyCheck(masm, key_reg, t0, t1, f2, f4, &miss_force_generic);
 
   __ lw(elements_reg,
          FieldMemOperand(receiver_reg, JSObject::kElementsOffset));