1 files changed, 39 insertions, 0 deletions
diff --git a/test/CodeGen/AMDGPU/fmax3.ll b/test/CodeGen/AMDGPU/fmax3.ll
new file mode 100644
index 000000000000..c3028a6217d5
--- /dev/null
+++ b/test/CodeGen/AMDGPU/fmax3.ll
@@ -0,0 +1,39 @@
+; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
+; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
+
+declare float @llvm.maxnum.f32(float, float) nounwind readnone
+
+; SI-LABEL: {{^}}test_fmax3_olt_0:
+; SI: buffer_load_dword [[REGC:v[0-9]+]]
+; SI: buffer_load_dword [[REGB:v[0-9]+]]
+; SI: buffer_load_dword [[REGA:v[0-9]+]]
+; SI: v_max3_f32 [[RESULT:v[0-9]+]], [[REGC]], [[REGB]], [[REGA]]
+; SI: buffer_store_dword [[RESULT]],
+; SI: s_endpgm
+define void @test_fmax3_olt_0(float addrspace(1)* %out, float addrspace(1)* %aptr, float addrspace(1)* %bptr, float addrspace(1)* %cptr) nounwind {
+  %a = load float, float addrspace(1)* %aptr, align 4
+  %b = load float, float addrspace(1)* %bptr, align 4
+  %c = load float, float addrspace(1)* %cptr, align 4
+  %f0 = call float @llvm.maxnum.f32(float %a, float %b) nounwind readnone
+  %f1 = call float @llvm.maxnum.f32(float %f0, float %c) nounwind readnone
+  store float %f1, float addrspace(1)* %out, align 4
+  ret void
+}
+
+; Commute operand of second fmax
+; SI-LABEL: {{^}}test_fmax3_olt_1:
+; SI: buffer_load_dword [[REGB:v[0-9]+]]
+; SI: buffer_load_dword [[REGA:v[0-9]+]]
+; SI: buffer_load_dword [[REGC:v[0-9]+]]
+; SI: v_max3_f32 [[RESULT:v[0-9]+]], [[REGC]], [[REGB]], [[REGA]]
+; SI: buffer_store_dword [[RESULT]],
+; SI: s_endpgm
+define void @test_fmax3_olt_1(float addrspace(1)* %out, float addrspace(1)* %aptr, float addrspace(1)* %bptr, float addrspace(1)* %cptr) nounwind {
+  %a = load float, float addrspace(1)* %aptr, align 4
+  %b = load float, float addrspace(1)* %bptr, align 4
+  %c = load float, float addrspace(1)* %cptr, align 4
+  %f0 = call float @llvm.maxnum.f32(float %a, float %b) nounwind readnone
+  %f1 = call float @llvm.maxnum.f32(float %c, float %f0) nounwind readnone
+  store float %f1, float addrspace(1)* %out, align 4
+  ret void
+}