; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | FileCheck %s ; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %} ; ; [numthreads(1, 1, 1)] ; void main() { ; int val=0, i=0, j=0, k=0; ; ; while (i < 10) { ; val = val + i; ; while (j < 20) { ; while (k < 30) { ; val = val + k; ; ++k; ; } ; ; val = val * 2; ; ++j; ; } ; ; ++i; ; } ; } ; CHECK: %[[#func_12:]] = OpFunction %[[#void:]] DontInline %[[#]] ; CHECK: %[[#bb39:]] = OpLabel ; CHECK: OpBranch %[[#bb40:]] ; CHECK: %[[#bb40]] = OpLabel ; CHECK: OpLoopMerge %[[#bb41:]] %[[#bb42:]] None ; CHECK: OpBranchConditional %[[#]] %[[#bb43:]] %[[#bb41]] ; CHECK: %[[#bb41]] = OpLabel ; CHECK: OpReturn ; CHECK: %[[#bb43]] = OpLabel ; CHECK: OpBranch %[[#bb44:]] ; CHECK: %[[#bb44]] = OpLabel ; CHECK: OpLoopMerge %[[#bb45:]] %[[#bb46:]] None ; CHECK: OpBranchConditional %[[#]] %[[#bb47:]] %[[#bb45]] ; CHECK: %[[#bb45]] = OpLabel ; CHECK: OpBranch %[[#bb42]] ; CHECK: %[[#bb42]] = OpLabel ; CHECK: OpBranch %[[#bb40]] ; CHECK: %[[#bb47]] = OpLabel ; CHECK: OpLoopMerge %[[#bb48:]] %[[#bb49:]] None ; CHECK: OpBranchConditional %[[#]] %[[#bb49]] %[[#bb48]] ; CHECK: %[[#bb48]] = OpLabel ; CHECK: OpBranch %[[#bb46]] ; CHECK: %[[#bb46]] = OpLabel ; CHECK: OpBranch %[[#bb44]] ; CHECK: %[[#bb49]] = OpLabel ; CHECK: OpBranch %[[#bb47]] ; CHECK: OpFunctionEnd ; CHECK: %[[#func_37:]] = OpFunction %[[#void:]] None %[[#]] ; CHECK: %[[#bb50:]] = OpLabel ; CHECK: OpReturn ; CHECK: OpFunctionEnd target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1" target triple = "spirv-unknown-vulkan1.3-compute" ; Function Attrs: convergent noinline norecurse nounwind optnone define internal spir_func void @main() #0 { entry: %0 = call token @llvm.experimental.convergence.entry() %val = alloca i32, align 4 %i = alloca i32, align 4 %j = alloca i32, align 4 %k = alloca i32, align 4 store i32 0, ptr %val, align 4 store i32 0, ptr %i, align 4 store i32 0, ptr %j, align 4 store i32 0, ptr %k, align 4 br label %while.cond while.cond: ; preds = %while.end9, %entry %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ] %2 = load i32, ptr %i, align 4 %cmp = icmp slt i32 %2, 10 br i1 %cmp, label %while.body, label %while.end11 while.body: ; preds = %while.cond %3 = load i32, ptr %val, align 4 %4 = load i32, ptr %i, align 4 %add = add nsw i32 %3, %4 store i32 %add, ptr %val, align 4 br label %while.cond1 while.cond1: ; preds = %while.end, %while.body %5 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %1) ] %6 = load i32, ptr %j, align 4 %cmp2 = icmp slt i32 %6, 20 br i1 %cmp2, label %while.body3, label %while.end9 while.body3: ; preds = %while.cond1 br label %while.cond4 while.cond4: ; preds = %while.body6, %while.body3 %7 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %5) ] %8 = load i32, ptr %k, align 4 %cmp5 = icmp slt i32 %8, 30 br i1 %cmp5, label %while.body6, label %while.end while.body6: ; preds = %while.cond4 %9 = load i32, ptr %val, align 4 %10 = load i32, ptr %k, align 4 %add7 = add nsw i32 %9, %10 store i32 %add7, ptr %val, align 4 %11 = load i32, ptr %k, align 4 %inc = add nsw i32 %11, 1 store i32 %inc, ptr %k, align 4 br label %while.cond4 while.end: ; preds = %while.cond4 %12 = load i32, ptr %val, align 4 %mul = mul nsw i32 %12, 2 store i32 %mul, ptr %val, align 4 %13 = load i32, ptr %j, align 4 %inc8 = add nsw i32 %13, 1 store i32 %inc8, ptr %j, align 4 br label %while.cond1 while.end9: ; preds = %while.cond1 %14 = load i32, ptr %i, align 4 %inc10 = add nsw i32 %14, 1 store i32 %inc10, ptr %i, align 4 br label %while.cond while.end11: ; preds = %while.cond ret void } ; Function Attrs: convergent norecurse define void @main.1() #1 { entry: call void @main() ret void } ; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none) declare token @llvm.experimental.convergence.entry() #2 ; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none) declare token @llvm.experimental.convergence.loop() #2 attributes #0 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } attributes #1 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } attributes #2 = { convergent nocallback nofree nosync nounwind willreturn memory(none) } !llvm.module.flags = !{!0, !1, !2} !0 = !{i32 1, !"wchar_size", i32 4} !1 = !{i32 4, !"dx.disable_optimizations", i32 1} !2 = !{i32 7, !"frame-pointer", i32 2}