--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/AMDGPU/llvm.AMDGPU.rsq.clamped.f64.ll	Tue Oct 13 17:48:58 2015 +0900
@@ -0,0 +1,23 @@
+; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=VI -check-prefix=FUNC %s
+
+declare double @llvm.AMDGPU.rsq.clamped.f64(double) nounwind readnone
+
+; FUNC-LABEL: {{^}}rsq_clamped_f64:
+; SI: v_rsq_clamp_f64_e32
+
+; VI: v_rsq_f64_e32 [[RSQ:v\[[0-9]+:[0-9]+\]]], s[2:3]
+; TODO: this constant should be folded:
+; VI: s_mov_b32 s[[ALLBITS:[0-9+]]], -1
+; VI: s_mov_b32 s[[HIGH1:[0-9+]]], 0x7fefffff
+; VI: s_mov_b32 s[[LOW1:[0-9+]]], s[[ALLBITS]]
+; VI: v_min_f64 v[0:1], [[RSQ]], s{{\[}}[[LOW1]]:[[HIGH1]]]
+; VI: s_mov_b32 s[[HIGH2:[0-9+]]], 0xffefffff
+; VI: s_mov_b32 s[[LOW2:[0-9+]]], s[[ALLBITS]]
+; VI: v_max_f64 v[0:1], v[0:1], s{{\[}}[[LOW2]]:[[HIGH2]]]
+
+define void @rsq_clamped_f64(double addrspace(1)* %out, double %src) nounwind {
+  %rsq_clamped = call double @llvm.AMDGPU.rsq.clamped.f64(double %src) nounwind readnone
+  store double %rsq_clamped, double addrspace(1)* %out, align 8
+  ret void
+}