AMDGPU: Don't form fmed3 if it will require materialization
If there is a single use constant, it can be folded into the
min/max, but not into med3.
llvm-svn: 342443
diff --git a/llvm/test/CodeGen/AMDGPU/clamp.ll b/llvm/test/CodeGen/AMDGPU/clamp.ll
index ec9ec10..e73f286 100644
--- a/llvm/test/CodeGen/AMDGPU/clamp.ll
+++ b/llvm/test/CodeGen/AMDGPU/clamp.ll
@@ -54,8 +54,8 @@
; GCN-LABEL: {{^}}v_clamp_negzero_f32:
; GCN-DAG: {{buffer|flat|global}}_load_dword [[A:v[0-9]+]]
; GCN-DAG: v_add_f32_e32 [[ADD:v[0-9]+]], 0.5, [[A]]
-; GCN-DAG: s_brev_b32 [[SIGNBIT:s[0-9]+]], 1
-; GCN: v_med3_f32 v{{[0-9]+}}, [[ADD]], [[SIGNBIT]], 1.0
+; GCN: v_max_f32_e32 [[MAX:v[0-9]+]], 0x80000000, [[ADD]]
+; GCN: v_min_f32_e32 v{{[0-9]+}}, 1.0, [[MAX]]
define amdgpu_kernel void @v_clamp_negzero_f32(float addrspace(1)* %out, float addrspace(1)* %aptr) #0 {
%tid = call i32 @llvm.amdgcn.workitem.id.x()
%gep0 = getelementptr float, float addrspace(1)* %aptr, i32 %tid