Fix no-sse2 part 2.

R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23154004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16194 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ia32/lithium-codegen-ia32.cc

@@ -2511,7 +2511,7 @@ void LCodeGen::DoCmpHoleAndBranch(LCmpHoleAndBranch* instr) {
   } else {
     // Put the value to the top of stack
     X87Register src = ToX87Register(instr->object());
-    X87Fxch(src);
+    X87LoadForUsage(src);
     __ fld(0);
     __ fld(0);
     __ FCmp();