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1; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | FileCheck %s2; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %}3 4 5;6; int process() {7; int c1 = 0;8; int c2 = 1;9; int c3 = 0;10; int c4 = 1;11; int val = 0;12;13; if (c1) {14; if (c2)15; val = 1;16; } else {17; if (c3) {18; val = 2;19; } else {20; if (c4) {21; val = 3;22; }23; }24; }25; return val;26; }27;28; [numthreads(1, 1, 1)]29; void main() {30; process();31; }32 33; CHECK: %[[#func_11:]] = OpFunction %[[#uint:]] DontInline %[[#]]34; CHECK: %[[#bb30:]] = OpLabel35; CHECK: OpSelectionMerge %[[#bb31:]] None36; CHECK: OpBranchConditional %[[#]] %[[#bb32:]] %[[#bb33:]]37; CHECK: %[[#bb33]] = OpLabel38; CHECK: OpSelectionMerge %[[#bb34:]] None39; CHECK: OpBranchConditional %[[#]] %[[#bb35:]] %[[#bb36:]]40; CHECK: %[[#bb36]] = OpLabel41; CHECK: OpSelectionMerge %[[#bb37:]] None42; CHECK: OpBranchConditional %[[#]] %[[#bb38:]] %[[#bb37]]43; CHECK: %[[#bb38]] = OpLabel44; CHECK: OpBranch %[[#bb37]]45; CHECK: %[[#bb37]] = OpLabel46; CHECK: OpBranch %[[#bb34]]47; CHECK: %[[#bb35]] = OpLabel48; CHECK: OpBranch %[[#bb34]]49; CHECK: %[[#bb34]] = OpLabel50; CHECK: OpBranch %[[#bb31]]51; CHECK: %[[#bb32]] = OpLabel52; CHECK: OpSelectionMerge %[[#bb39:]] None53; CHECK: OpBranchConditional %[[#]] %[[#bb40:]] %[[#bb39]]54; CHECK: %[[#bb40]] = OpLabel55; CHECK: OpBranch %[[#bb39]]56; CHECK: %[[#bb39]] = OpLabel57; CHECK: OpBranch %[[#bb31]]58; CHECK: %[[#bb31]] = OpLabel59; CHECK: OpReturnValue %[[#]]60; CHECK: OpFunctionEnd61; CHECK: %[[#func_26:]] = OpFunction %[[#void:]] DontInline %[[#]]62; CHECK: %[[#bb41:]] = OpLabel63; CHECK: OpReturn64; CHECK: OpFunctionEnd65; CHECK: %[[#func_28:]] = OpFunction %[[#void]] None %[[#]]66; CHECK: %[[#bb42:]] = OpLabel67; CHECK: OpReturn68; CHECK: OpFunctionEnd69 70target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1"71target triple = "spirv-unknown-vulkan1.3-compute"72 73; Function Attrs: convergent noinline norecurse nounwind optnone74define spir_func noundef i32 @_Z7processv() #0 {75entry:76 %0 = call token @llvm.experimental.convergence.entry()77 %c1 = alloca i32, align 478 %c2 = alloca i32, align 479 %c3 = alloca i32, align 480 %c4 = alloca i32, align 481 %val = alloca i32, align 482 store i32 0, ptr %c1, align 483 store i32 1, ptr %c2, align 484 store i32 0, ptr %c3, align 485 store i32 1, ptr %c4, align 486 store i32 0, ptr %val, align 487 %1 = load i32, ptr %c1, align 488 %tobool = icmp ne i32 %1, 089 br i1 %tobool, label %if.then, label %if.else90 91if.then: ; preds = %entry92 %2 = load i32, ptr %c2, align 493 %tobool1 = icmp ne i32 %2, 094 br i1 %tobool1, label %if.then2, label %if.end95 96if.then2: ; preds = %if.then97 store i32 1, ptr %val, align 498 br label %if.end99 100if.end: ; preds = %if.then2, %if.then101 br label %if.end10102 103if.else: ; preds = %entry104 %3 = load i32, ptr %c3, align 4105 %tobool3 = icmp ne i32 %3, 0106 br i1 %tobool3, label %if.then4, label %if.else5107 108if.then4: ; preds = %if.else109 store i32 2, ptr %val, align 4110 br label %if.end9111 112if.else5: ; preds = %if.else113 %4 = load i32, ptr %c4, align 4114 %tobool6 = icmp ne i32 %4, 0115 br i1 %tobool6, label %if.then7, label %if.end8116 117if.then7: ; preds = %if.else5118 store i32 3, ptr %val, align 4119 br label %if.end8120 121if.end8: ; preds = %if.then7, %if.else5122 br label %if.end9123 124if.end9: ; preds = %if.end8, %if.then4125 br label %if.end10126 127if.end10: ; preds = %if.end9, %if.end128 %5 = load i32, ptr %val, align 4129 ret i32 %5130}131 132; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)133declare token @llvm.experimental.convergence.entry() #1134 135; Function Attrs: convergent noinline norecurse nounwind optnone136define internal spir_func void @main() #0 {137entry:138 %0 = call token @llvm.experimental.convergence.entry()139 %call1 = call spir_func noundef i32 @_Z7processv() #3 [ "convergencectrl"(token %0) ]140 ret void141}142 143; Function Attrs: convergent norecurse144define void @main.1() #2 {145entry:146 call void @main()147 ret void148}149 150attributes #0 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }151attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }152attributes #2 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }153attributes #3 = { convergent }154 155!llvm.module.flags = !{!0, !1, !2}156 157 158!0 = !{i32 1, !"wchar_size", i32 4}159!1 = !{i32 4, !"dx.disable_optimizations", i32 1}160!2 = !{i32 7, !"frame-pointer", i32 2}161 162 163