R600/SI: Only form min/max with 1 use.

[oota-llvm.git] / test / CodeGen / R600 / fmax_legacy.ll

diff --git a/test/CodeGen/R600/fmax_legacy.ll b/test/CodeGen/R600/fmax_legacy.ll
index 43e9de108801dba0f0523066e649b75c23902045..7fc170ec33bf84d86ddb89ca5f583810b9029908 100644 (file)
--- a/test/CodeGen/R600/fmax_legacy.ll
+++ b/test/CodeGen/R600/fmax_legacy.ll
@@ -79,5 +79,30 @@ define void @test_fmax_legacy_ogt_f32(float addrspace(1)* %out, float addrspace(
   ret void
 }
 
+
+; FUNC-LABEL: @test_fmax_legacy_ogt_f32_multi_use
+; SI: buffer_load_dword [[A:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI: buffer_load_dword [[B:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4
+; SI-NOT: v_max_
+; SI: v_cmp_gt_f32
+; SI-NEXT: v_cndmask_b32
+; SI-NOT: v_max_
+
+; EG: MAX
+define void @test_fmax_legacy_ogt_f32_multi_use(float addrspace(1)* %out0, i1 addrspace(1)* %out1, float addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.r600.read.tidig.x() #1
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+
+  %a = load float addrspace(1)* %gep.0, align 4
+  %b = load float addrspace(1)* %gep.1, align 4
+
+  %cmp = fcmp ogt float %a, %b
+  %val = select i1 %cmp, float %a, float %b
+  store float %val, float addrspace(1)* %out0, align 4
+  store i1 %cmp, i1addrspace(1)* %out1
+  ret void
+}
+
 attributes #0 = { nounwind }
 attributes #1 = { nounwind readnone }