[X87] [wasm] Fix one V8 x87 code generation bug in TurboFan compiler.

src/compiler/x87/code-generator-x87.cc

Index: src/compiler/x87/code-generator-x87.cc
diff --git a/src/compiler/x87/code-generator-x87.cc b/src/compiler/x87/code-generator-x87.cc
index 0b182d5c711cb14184ce3665c755a936a3c8a70b..b771df24453341fc8a11c5affd9e3cc38106f524 100644
--- a/src/compiler/x87/code-generator-x87.cc
+++ b/src/compiler/x87/code-generator-x87.cc
@@ -1499,12 +1499,16 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
       __ TruncateX87TOSToI(i.OutputRegister(0));
       __ test(i.OutputRegister(0), i.OutputRegister(0));
       __ j(positive, &success);
+      // Need to reserve the input float32 data.
+      __ fld(0);
       __ push(Immediate(INT32_MIN));
       __ fild_s(Operand(esp, 0));
       __ lea(esp, Operand(esp, kPointerSize));
       __ faddp();
       __ TruncateX87TOSToI(i.OutputRegister(0));
       __ or_(i.OutputRegister(0), Immediate(0x80000000));
+      // Only keep input float32 data in x87 stack when return.
+      __ fstp(0);
       __ bind(&success);
       if (!instr->InputAt(0)->IsFPRegister()) {
         __ fstp(0);