1; RUN: llc -march=amdgcn -stop-after=amdgpu-isel -verify-machineinstrs -o - %s | FileCheck %s
2
3; CHECK-LABEL: vcopy_i1_undef
4; CHECK: [[IMPDEF0:%[0-9]+]]:sreg_64 = IMPLICIT_DEF
5; CHECK-NOT: COPY
6; CHECK: [[IMPDEF1:%[0-9]+]]:sreg_64 = IMPLICIT_DEF
7; CHECK-NOT: COPY [[IMPDEF0]]
8; CHECK-NOT: COPY [[IMPDEF1]]
9; CHECK: .false:
10define <2 x float> @vcopy_i1_undef(<2 x float> addrspace(1)* %p) {
11entry:
12  br i1 undef, label %exit, label %false
13
14false:
15  %x = load <2 x float>, <2 x float> addrspace(1)* %p
16  %cmp = fcmp one <2 x float> %x, zeroinitializer
17  br label %exit
18
19exit:
20  %c = phi <2 x i1> [ undef, %entry ], [ %cmp, %false ]
21  %ret = select <2 x i1> %c, <2 x float> <float 2.0, float 2.0>, <2 x float> <float 4.0, float 4.0>
22  ret <2 x float> %ret
23}
24