Revert "Introduce InvokeMathCFunction that can be used to directly invoke mathematical function pro…

runtime/vm/intermediate_language_ia32.cc

Index: runtime/vm/intermediate_language_ia32.cc
diff --git a/runtime/vm/intermediate_language_ia32.cc b/runtime/vm/intermediate_language_ia32.cc
index 8bfcee49a25a979b930517b38ccfdee82d509dcb..3fce02156485ccda3652f5c77e27635180344b60 100644
--- a/runtime/vm/intermediate_language_ia32.cc
+++ b/runtime/vm/intermediate_language_ia32.cc
@@ -2515,33 +2515,6 @@ void DoubleToDoubleInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
-LocationSummary* InvokeMathCFunctionInstr::MakeLocationSummary() const {
-  ASSERT((InputCount() == 1) || (InputCount() == 2));
-  const intptr_t kNumTemps = 0;
-  LocationSummary* result =
-      new LocationSummary(InputCount(), kNumTemps, LocationSummary::kCall);
-  result->set_in(0, Location::FpuRegisterLocation(XMM1, Location::kDouble));
-  if (InputCount() == 2) {
-    result->set_in(1, Location::FpuRegisterLocation(XMM2, Location::kDouble));
-  }
-  result->set_out(Location::FpuRegisterLocation(XMM1, Location::kDouble));
-  return result;
-}
-
-
-void InvokeMathCFunctionInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  __ enter(Immediate(0));
-  __ ReserveAlignedFrameSpace(kDoubleSize * InputCount());
-  for (intptr_t i = 0; i < InputCount(); i++) {
-    __ movsd(Address(ESP, -kDoubleSize * i), locs()->in(i).fpu_reg());
-  }
-  __ CallRuntime(TargetFunction());
-  __ fstpl(Address(ESP, 0));
-  __ movsd(locs()->out().fpu_reg(), Address(ESP, 0));
-  __ leave();
-}
-
-
 LocationSummary* PolymorphicInstanceCallInstr::MakeLocationSummary() const {
   return MakeCallSummary();
 }