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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; [numthreads(1, 1, 1)]6; void main() {7; int val=0, i=0, j=0, k=0;8;9; while (i < 10) {10; val = val + i;11; while (j < 20) {12; while (k < 30) {13; val = val + k;14; ++k;15; }16;17; val = val * 2;18; ++j;19; }20;21; ++i;22; }23; }24 25; CHECK: %[[#func_12:]] = OpFunction %[[#void:]] DontInline %[[#]]26; CHECK: %[[#bb39:]] = OpLabel27; CHECK: OpBranch %[[#bb40:]]28; CHECK: %[[#bb40]] = OpLabel29; CHECK: OpLoopMerge %[[#bb41:]] %[[#bb42:]] None30; CHECK: OpBranchConditional %[[#]] %[[#bb43:]] %[[#bb41]]31; CHECK: %[[#bb41]] = OpLabel32; CHECK: OpReturn33; CHECK: %[[#bb43]] = OpLabel34; CHECK: OpBranch %[[#bb44:]]35; CHECK: %[[#bb44]] = OpLabel36; CHECK: OpLoopMerge %[[#bb45:]] %[[#bb46:]] None37; CHECK: OpBranchConditional %[[#]] %[[#bb47:]] %[[#bb45]]38; CHECK: %[[#bb45]] = OpLabel39; CHECK: OpBranch %[[#bb42]]40; CHECK: %[[#bb42]] = OpLabel41; CHECK: OpBranch %[[#bb40]]42; CHECK: %[[#bb47]] = OpLabel43; CHECK: OpLoopMerge %[[#bb48:]] %[[#bb49:]] None44; CHECK: OpBranchConditional %[[#]] %[[#bb49]] %[[#bb48]]45; CHECK: %[[#bb48]] = OpLabel46; CHECK: OpBranch %[[#bb46]]47; CHECK: %[[#bb46]] = OpLabel48; CHECK: OpBranch %[[#bb44]]49; CHECK: %[[#bb49]] = OpLabel50; CHECK: OpBranch %[[#bb47]]51; CHECK: OpFunctionEnd52; CHECK: %[[#func_37:]] = OpFunction %[[#void:]] None %[[#]]53; CHECK: %[[#bb50:]] = OpLabel54; CHECK: OpReturn55; CHECK: OpFunctionEnd56 57 58 59target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1"60target triple = "spirv-unknown-vulkan1.3-compute"61 62; Function Attrs: convergent noinline norecurse nounwind optnone63define internal spir_func void @main() #0 {64entry:65 %0 = call token @llvm.experimental.convergence.entry()66 %val = alloca i32, align 467 %i = alloca i32, align 468 %j = alloca i32, align 469 %k = alloca i32, align 470 store i32 0, ptr %val, align 471 store i32 0, ptr %i, align 472 store i32 0, ptr %j, align 473 store i32 0, ptr %k, align 474 br label %while.cond75 76while.cond: ; preds = %while.end9, %entry77 %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]78 %2 = load i32, ptr %i, align 479 %cmp = icmp slt i32 %2, 1080 br i1 %cmp, label %while.body, label %while.end1181 82while.body: ; preds = %while.cond83 %3 = load i32, ptr %val, align 484 %4 = load i32, ptr %i, align 485 %add = add nsw i32 %3, %486 store i32 %add, ptr %val, align 487 br label %while.cond188 89while.cond1: ; preds = %while.end, %while.body90 %5 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %1) ]91 %6 = load i32, ptr %j, align 492 %cmp2 = icmp slt i32 %6, 2093 br i1 %cmp2, label %while.body3, label %while.end994 95while.body3: ; preds = %while.cond196 br label %while.cond497 98while.cond4: ; preds = %while.body6, %while.body399 %7 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %5) ]100 %8 = load i32, ptr %k, align 4101 %cmp5 = icmp slt i32 %8, 30102 br i1 %cmp5, label %while.body6, label %while.end103 104while.body6: ; preds = %while.cond4105 %9 = load i32, ptr %val, align 4106 %10 = load i32, ptr %k, align 4107 %add7 = add nsw i32 %9, %10108 store i32 %add7, ptr %val, align 4109 %11 = load i32, ptr %k, align 4110 %inc = add nsw i32 %11, 1111 store i32 %inc, ptr %k, align 4112 br label %while.cond4113 114while.end: ; preds = %while.cond4115 %12 = load i32, ptr %val, align 4116 %mul = mul nsw i32 %12, 2117 store i32 %mul, ptr %val, align 4118 %13 = load i32, ptr %j, align 4119 %inc8 = add nsw i32 %13, 1120 store i32 %inc8, ptr %j, align 4121 br label %while.cond1122 123while.end9: ; preds = %while.cond1124 %14 = load i32, ptr %i, align 4125 %inc10 = add nsw i32 %14, 1126 store i32 %inc10, ptr %i, align 4127 br label %while.cond128 129while.end11: ; preds = %while.cond130 ret void131}132 133; Function Attrs: convergent norecurse134define void @main.1() #1 {135entry:136 call void @main()137 ret void138}139 140; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)141declare token @llvm.experimental.convergence.entry() #2142 143; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)144declare token @llvm.experimental.convergence.loop() #2145 146attributes #0 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }147attributes #1 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }148attributes #2 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }149 150!llvm.module.flags = !{!0, !1, !2}151 152 153!0 = !{i32 1, !"wchar_size", i32 4}154!1 = !{i32 4, !"dx.disable_optimizations", i32 1}155!2 = !{i32 7, !"frame-pointer", i32 2}156 157 158