1 files changed, 28 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.brev.ll b/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.brev.ll
new file mode 100644
index 00000000000..301de4b1c82
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/llvm.AMDGPU.brev.ll
@@ -0,0 +1,28 @@
+; 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 i32 @llvm.AMDGPU.brev(i32) nounwind readnone
+
+; FUNC-LABEL: {{^}}s_brev_i32:
+; SI: s_load_dword [[VAL:s[0-9]+]],
+; SI: s_brev_b32 [[SRESULT:s[0-9]+]], [[VAL]]
+; SI: v_mov_b32_e32 [[VRESULT:v[0-9]+]], [[SRESULT]]
+; SI: buffer_store_dword [[VRESULT]],
+; SI: s_endpgm
+define void @s_brev_i32(i32 addrspace(1)* noalias %out, i32 %val) nounwind {
+  %ctlz = call i32 @llvm.AMDGPU.brev(i32 %val) nounwind readnone
+  store i32 %ctlz, i32 addrspace(1)* %out, align 4
+  ret void
+}
+
+; FUNC-LABEL: {{^}}v_brev_i32:
+; SI: buffer_load_dword [[VAL:v[0-9]+]],
+; SI: v_bfrev_b32_e32 [[RESULT:v[0-9]+]], [[VAL]]
+; SI: buffer_store_dword [[RESULT]],
+; SI: s_endpgm
+define void @v_brev_i32(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %valptr) nounwind {
+  %val = load i32, i32 addrspace(1)* %valptr, align 4
+  %ctlz = call i32 @llvm.AMDGPU.brev(i32 %val) nounwind readnone
+  store i32 %ctlz, i32 addrspace(1)* %out, align 4
+  ret void
+}