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-rw-r--r--test/CodeGen/AMDGPU/fmax3.ll39
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diff --git a/test/CodeGen/AMDGPU/fmax3.ll b/test/CodeGen/AMDGPU/fmax3.ll
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+++ b/test/CodeGen/AMDGPU/fmax3.ll
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+; 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
+}