1 ; RUN: llc -march=amdgcn -verify-machineinstrs -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck -check-prefix=GCN %s
2 ; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck -check-prefix=GCN %s
4 ; This used to crash because during intermediate control flow lowering, there
6 ; s_mov_b64 s[0:1], exec
7 ; s_and_b64 s[2:3], s[0:1], s[2:3] ; def & use of the same register pair
9 ; s_mov_b64_term exec, s[2:3]
10 ; that was not treated correctly.
12 ; GCN-LABEL: {{^}}ham:
13 ; GCN-DAG: v_cmp_lt_f32_e64 [[OTHERCC:s\[[0-9]+:[0-9]+\]]],
14 ; GCN-DAG: v_cmp_lt_f32_e32 vcc,
15 ; GCN: s_and_b64 [[AND:s\[[0-9]+:[0-9]+\]]], vcc, [[OTHERCC]]
16 ; GCN: s_and_saveexec_b64 [[SAVED:s\[[0-9]+:[0-9]+\]]], [[AND]]
17 ; GCN-NEXT: s_cbranch_execz .LBB0_{{[0-9]+}}
19 ; GCN-NEXT: ; %bb.{{[0-9]+}}: ; %bb4
22 ; GCN: .LBB0_{{[0-9]+}}: ; %UnifiedReturnBlock
24 ; GCN-NEXT: .Lfunc_end
25 define amdgpu_ps void @ham(float %arg, float %arg1) #0 {
27 %tmp = fcmp ogt float %arg, 0.000000e+00
28 %tmp2 = fcmp ogt float %arg1, 0.000000e+00
29 %tmp3 = and i1 %tmp, %tmp2
30 br i1 %tmp3, label %bb4, label %bb5
33 store volatile i32 4, i32 addrspace(3)* undef
40 attributes #0 = { nounwind readonly "InitialPSInputAddr"="36983" }
41 attributes #1 = { nounwind readnone }