; RUN: opt -mtriple=amdgcn-- -S -structurizecfg -si-annotate-control-flow -simplifycfg-require-and-preserve-domtree=1 %s | FileCheck -check-prefix=OPT %s
; RUN: opt -mtriple=amdgcn-- -S -passes=structurizecfg,si-annotate-control-flow -simplifycfg-require-and-preserve-domtree=1 %s | FileCheck -check-prefix=OPT %s
; RUN: llc -mtriple=amdgcn -verify-machineinstrs -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck -check-prefix=GCN %s
; OPT-LABEL: @annotate_unreachable_noloop(
; OPT-NOT: call i1 @llvm.amdgcn.loop
; GCN-LABEL: {{^}}annotate_unreachable_noloop:
; GCN: s_cbranch_scc1
; GCN-NOT: s_endpgm
; GCN: .Lfunc_end0
define amdgpu_kernel void @annotate_unreachable_noloop(ptr addrspace(1) noalias nocapture readonly %arg) #0 {
bb:
%tmp = tail call i32 @llvm.amdgcn.workitem.id.x()
br label %bb1
bb1: ; preds = %bb
%tmp2 = sext i32 %tmp to i64
%tmp3 = getelementptr inbounds <4 x float>, ptr addrspace(1) %arg, i64 %tmp2
%tmp4 = load <4 x float>, ptr addrspace(1) %tmp3, align 16
br i1 undef, label %bb5, label %bb3
bb3: ; preds = %bb1
%tmp6 = extractelement <4 x float> %tmp4, i32 2
%tmp7 = fcmp olt float %tmp6, 0.000000e+00
br i1 %tmp7, label %bb4, label %bb5 ; crash goes away if these are swapped
bb4: ; preds = %bb3
unreachable
bb5: ; preds = %bb3, %bb1
unreachable
}
; OPT-LABEL: @annotate_ret_noloop(
; OPT-NOT: call i1 @llvm.amdgcn.loop
; GCN-LABEL: {{^}}annotate_ret_noloop:
; GCN: load_dwordx4
; GCN: v_cmp_nlt_f32
; GCN: s_and_saveexec_b64
; GCN-NEXT: s_endpgm
; GCN: .Lfunc_end
define amdgpu_kernel void @annotate_ret_noloop(ptr addrspace(1) noalias nocapture readonly %arg) #0 {
bb:
%tmp = tail call i32 @llvm.amdgcn.workitem.id.x()
br label %bb1
bb1: ; preds = %bb
%tmp2 = sext i32 %tmp to i64
%tmp3 = getelementptr inbounds <4 x float>, ptr addrspace(1) %arg, i64 %tmp2
%tmp4 = load <4 x float>, ptr addrspace(1) %tmp3, align 16
%tmp5 = extractelement <4 x float> %tmp4, i32 1
store volatile <4 x float> %tmp4, ptr addrspace(1) undef
%cmp = fcmp ogt float %tmp5, 1.0
br i1 %cmp, label %bb5, label %bb3
bb3: ; preds = %bb1
%tmp6 = extractelement <4 x float> %tmp4, i32 2
%tmp7 = fcmp olt float %tmp6, 0.000000e+00
br i1 %tmp7, label %bb4, label %bb5 ; crash goes away if these are swapped
bb4: ; preds = %bb3
ret void
bb5: ; preds = %bb3, %bb1
ret void
}
; OPT-LABEL: @uniform_annotate_ret_noloop(
; OPT-NOT: call i1 @llvm.amdgcn.loop
; GCN-LABEL: {{^}}uniform_annotate_ret_noloop:
; GCN: s_cbranch_scc1
; GCN: s_endpgm
; GCN: .Lfunc_end
define amdgpu_kernel void @uniform_annotate_ret_noloop(ptr addrspace(1) noalias nocapture readonly %arg, i32 %tmp) #0 {
bb:
br label %bb1
bb1: ; preds = %bb
%tmp2 = sext i32 %tmp to i64
%tmp3 = getelementptr inbounds <4 x float>, ptr addrspace(1) %arg, i64 %tmp2
%tmp4 = load <4 x float>, ptr addrspace(1) %tmp3, align 16
br i1 undef, label %bb5, label %bb3
bb3: ; preds = %bb1
%tmp6 = extractelement <4 x float> %tmp4, i32 2
%tmp7 = fcmp olt float %tmp6, 0.000000e+00
br i1 %tmp7, label %bb4, label %bb5 ; crash goes away if these are swapped
bb4: ; preds = %bb3
ret void
bb5: ; preds = %bb3, %bb1
ret void
}
declare i32 @llvm.amdgcn.workitem.id.x() #1
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }
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