X87: fix one GC issue.

 The incorrect parameter number is set when recording safepoint.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/716463003

Patch from Chunyang Dai <chunyang.dai@intel.com>.

Cr-Commit-Position: refs/heads/master@{#25226}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25226 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/x87/lithium-codegen-x87.cc

@@ -4063,8 +4063,8 @@ void LCodeGen::DoMathSqrt(LMathSqrt* instr) {
     __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
     __ push(temp_result);
     __ CallRuntimeSaveDoubles(Runtime::kMathSqrtRT);
-    RecordSafepointWithRegisters(
-        instr->pointer_map(), 0, Safepoint::kNoLazyDeopt);
+    RecordSafepointWithRegisters(instr->pointer_map(), 1,
+                                 Safepoint::kNoLazyDeopt);
     __ StoreToSafepointRegisterSlot(temp_result, eax);
   }
   X87PrepareToWrite(result_reg);
@@ -4278,7 +4278,7 @@ void LCodeGen::DoMathExp(LMathExp* instr) {
     __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
     __ push(temp_result);
     __ CallRuntimeSaveDoubles(Runtime::kMathExpRT);
-    RecordSafepointWithRegisters(instr->pointer_map(), 0,
+    RecordSafepointWithRegisters(instr->pointer_map(), 1,
                                  Safepoint::kNoLazyDeopt);
     __ StoreToSafepointRegisterSlot(temp_result, eax);
   }