1 files changed, 33 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.rcp.f64.ll b/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.rcp.f64.ll
new file mode 100644
index 00000000000..d2a655bf909
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.rcp.f64.ll
@@ -0,0 +1,33 @@
+; 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=SI -check-prefix=FUNC %s
+
+declare double @llvm.AMDGPU.rcp.f64(double) nounwind readnone
+declare double @llvm.sqrt.f64(double) nounwind readnone
+
+; FUNC-LABEL: {{^}}rcp_f64:
+; SI: v_rcp_f64_e32
+define void @rcp_f64(double addrspace(1)* %out, double %src) nounwind {
+  %rcp = call double @llvm.AMDGPU.rcp.f64(double %src) nounwind readnone
+  store double %rcp, double addrspace(1)* %out, align 8
+  ret void
+}
+
+; FUNC-LABEL: {{^}}rcp_pat_f64:
+; SI: v_rcp_f64_e32
+define void @rcp_pat_f64(double addrspace(1)* %out, double %src) nounwind {
+  %rcp = fdiv double 1.0, %src
+  store double %rcp, double addrspace(1)* %out, align 8
+  ret void
+}
+
+; FUNC-LABEL: {{^}}rsq_rcp_pat_f64:
+; SI-UNSAFE: v_rsq_f64_e32
+; SI-SAFE-NOT: v_rsq_f64_e32
+; SI-SAFE: v_sqrt_f64
+; SI-SAFE: v_rcp_f64
+define void @rsq_rcp_pat_f64(double addrspace(1)* %out, double %src) nounwind {
+  %sqrt = call double @llvm.sqrt.f64(double %src) nounwind readnone
+  %rcp = call double @llvm.AMDGPU.rcp.f64(double %sqrt) nounwind readnone
+  store double %rcp, double addrspace(1)* %out, align 8
+  ret void
+}