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1; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %}2 3; int foo() { return true; }4;5; int process() {6; int val = 0;7; int i = 0;8;9; do {10; ++i;11; if (i > 5) {12; break;13; break; // No SPIR-V should be emitted for this statement.14; val = i; // No SPIR-V should be emitted for this statement.15; while(true); // No SPIR-V should be emitted for this statement.16; }17;18; val = i;19; {20; {21; break;22; }23; }24; val = val * 2; // No SPIR-V should be emitted for this statement.25;26; } while (i < 10);27;28; ////////////////////////////////////////////////////////////////////////////////29; // Nested do-while loops with break statements //30; // Each break statement should branch to the corresponding loop's break block //31; ////////////////////////////////////////////////////////////////////////////////32;33; do {34; ++i;35;36; do {37; ++val;38; break;39; } while (i < 10);40;41; --i;42;43; {44; break;45; }46;47; } while(val < 10);48;49; return val;50; }51;52; [numthreads(1, 1, 1)]53; void main() {54; process();55; }56 57target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1"58target triple = "spirv-unknown-vulkan1.3-compute"59 60; Function Attrs: convergent noinline nounwind optnone61define spir_func noundef i32 @_Z3foov() #0 {62entry:63 %0 = call token @llvm.experimental.convergence.entry()64 ret i32 165}66 67; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)68declare token @llvm.experimental.convergence.entry() #169 70; Function Attrs: convergent noinline nounwind optnone71define spir_func noundef i32 @_Z7processv() #0 {72entry:73 %0 = call token @llvm.experimental.convergence.entry()74 %val = alloca i32, align 475 %i = alloca i32, align 476 store i32 0, ptr %val, align 477 store i32 0, ptr %i, align 478 br label %do.body79 80do.body: ; preds = %do.cond, %entry81 %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]82 %2 = load i32, ptr %i, align 483 %inc = add nsw i32 %2, 184 store i32 %inc, ptr %i, align 485 %3 = load i32, ptr %i, align 486 %cmp = icmp sgt i32 %3, 587 br i1 %cmp, label %if.then, label %if.end88 89if.then: ; preds = %do.body90 br label %do.end91 92if.end: ; preds = %do.body93 %4 = load i32, ptr %i, align 494 store i32 %4, ptr %val, align 495 br label %do.end96 97do.cond: ; No predecessors!98 %5 = load i32, ptr %i, align 499 %cmp1 = icmp slt i32 %5, 10100 br i1 %cmp1, label %do.body, label %do.end101 102do.end: ; preds = %do.cond, %if.end, %if.then103 br label %do.body2104 105do.body2: ; preds = %do.cond9, %do.end106 %6 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]107 %7 = load i32, ptr %i, align 4108 %inc3 = add nsw i32 %7, 1109 store i32 %inc3, ptr %i, align 4110 br label %do.body4111 112do.body4: ; preds = %do.cond6, %do.body2113 %8 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %6) ]114 %9 = load i32, ptr %val, align 4115 %inc5 = add nsw i32 %9, 1116 store i32 %inc5, ptr %val, align 4117 br label %do.end8118 119do.cond6: ; No predecessors!120 %10 = load i32, ptr %i, align 4121 %cmp7 = icmp slt i32 %10, 10122 br i1 %cmp7, label %do.body4, label %do.end8123 124do.end8: ; preds = %do.cond6, %do.body4125 %11 = load i32, ptr %i, align 4126 %dec = add nsw i32 %11, -1127 store i32 %dec, ptr %i, align 4128 br label %do.end11129 130do.cond9: ; No predecessors!131 %12 = load i32, ptr %val, align 4132 %cmp10 = icmp slt i32 %12, 10133 br i1 %cmp10, label %do.body2, label %do.end11134 135do.end11: ; preds = %do.cond9, %do.end8136 %13 = load i32, ptr %val, align 4137 ret i32 %13138}139 140; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)141declare token @llvm.experimental.convergence.loop() #1142 143; Function Attrs: convergent noinline norecurse nounwind optnone144define internal spir_func void @main() #2 {145entry:146 %0 = call token @llvm.experimental.convergence.entry()147 %call1 = call spir_func noundef i32 @_Z7processv() #4 [ "convergencectrl"(token %0) ]148 ret void149}150 151; Function Attrs: convergent norecurse152define void @main.1() #3 {153entry:154 call void @main()155 ret void156}157 158attributes #0 = { convergent noinline nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }159attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }160attributes #2 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }161attributes #3 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }162attributes #4 = { convergent }163 164!llvm.module.flags = !{!0, !1, !2}165 166!0 = !{i32 1, !"wchar_size", i32 4}167!1 = !{i32 4, !"dx.disable_optimizations", i32 1}168!2 = !{i32 7, !"frame-pointer", i32 2}169