[X87] [crankshaft] Set Floating-point precision in Math.Cos/Math.Sin to standard double precision.

src/crankshaft/x87/lithium-codegen-x87.cc

Index: src/crankshaft/x87/lithium-codegen-x87.cc
diff --git a/src/crankshaft/x87/lithium-codegen-x87.cc b/src/crankshaft/x87/lithium-codegen-x87.cc
index ead2a3db42cafce374cf7d2cadcfb6b90e7283aa..f2832bb183d3cb7e704a348510e536d4de10b710 100644
--- a/src/crankshaft/x87/lithium-codegen-x87.cc
+++ b/src/crankshaft/x87/lithium-codegen-x87.cc
@@ -3660,7 +3660,9 @@ void LCodeGen::DoMathCos(LMathCos* instr) {
   __ PrepareCallCFunction(2, eax);
   __ fstp_d(MemOperand(esp, 0));
   X87PrepareToWrite(result);
+  __ X87SetFPUCW(0x027F);
   __ CallCFunction(ExternalReference::ieee754_cos_function(isolate()), 2);
+  __ X87SetFPUCW(0x037F);
   // Return value is in st(0) on ia32.
   X87CommitWrite(result);
 }
@@ -3674,7 +3676,9 @@ void LCodeGen::DoMathSin(LMathSin* instr) {
   __ PrepareCallCFunction(2, eax);
   __ fstp_d(MemOperand(esp, 0));
   X87PrepareToWrite(result);
+  __ X87SetFPUCW(0x027F);
   __ CallCFunction(ExternalReference::ieee754_sin_function(isolate()), 2);
+  __ X87SetFPUCW(0x037F);
   // Return value is in st(0) on ia32.
   X87CommitWrite(result);
 }