vendor/llvm/llvm-release_350-r216957

1 files changed, 30 insertions, 0 deletions

diff --git a/test/CodeGen/R600/llvm.AMDGPU.rcp.f64.ll b/test/CodeGen/R600/llvm.AMDGPU.rcp.f64.ll
new file mode 100644
index 0000000000000..b5dda0ce81f90
--- /dev/null
+++ b/test/CodeGen/R600/llvm.AMDGPU.rcp.f64.ll
@@ -0,0 +1,30 @@
+; RUN: llc -march=r600 -mcpu=SI -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
+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
+}