--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/X86/zero-remat.ll	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,41 @@
+; REQUIRES: asserts
+; RUN: llc < %s -march=x86-64 | FileCheck %s --check-prefix=CHECK-64
+; RUN: llc < %s -march=x86-64 -o /dev/null -stats  -info-output-file - | grep asm-printer  | grep 12
+; RUN: llc < %s -march=x86 | FileCheck %s --check-prefix=CHECK-32
+
+declare void @bar(double %x)
+declare void @barf(float %x)
+
+define double @foo() nounwind {
+
+  call void @bar(double 0.0)
+  ret double 0.0
+
+;CHECK-32-LABEL: foo:
+;CHECK-32: call
+;CHECK-32: fldz
+;CHECK-32: ret
+
+;CHECK-64-LABEL: foo:
+;CHECK-64: xorps
+;CHECK-64: call
+;CHECK-64: xorps
+;CHECK-64: ret
+}
+
+
+define float @foof() nounwind {
+  call void @barf(float 0.0)
+  ret float 0.0
+
+;CHECK-32-LABEL: foof:
+;CHECK-32: call
+;CHECK-32: fldz
+;CHECK-32: ret
+
+;CHECK-64-LABEL: foof:
+;CHECK-64: xorps
+;CHECK-64: call
+;CHECK-64: xorps
+;CHECK-64: ret
+}