1; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | FileCheck %s 2; 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:]] = OpLabel 27; CHECK: OpBranch %[[#bb40:]] 28; CHECK: %[[#bb40]] = OpLabel 29; CHECK: OpLoopMerge %[[#bb41:]] %[[#bb42:]] None 30; CHECK: OpBranchConditional %[[#]] %[[#bb43:]] %[[#bb41]] 31; CHECK: %[[#bb41]] = OpLabel 32; CHECK: OpReturn 33; CHECK: %[[#bb43]] = OpLabel 34; CHECK: OpBranch %[[#bb44:]] 35; CHECK: %[[#bb44]] = OpLabel 36; CHECK: OpLoopMerge %[[#bb45:]] %[[#bb46:]] None 37; CHECK: OpBranchConditional %[[#]] %[[#bb47:]] %[[#bb45]] 38; CHECK: %[[#bb45]] = OpLabel 39; CHECK: OpBranch %[[#bb42]] 40; CHECK: %[[#bb42]] = OpLabel 41; CHECK: OpBranch %[[#bb40]] 42; CHECK: %[[#bb47]] = OpLabel 43; CHECK: OpLoopMerge %[[#bb48:]] %[[#bb49:]] None 44; CHECK: OpBranchConditional %[[#]] %[[#bb49]] %[[#bb48]] 45; CHECK: %[[#bb48]] = OpLabel 46; CHECK: OpBranch %[[#bb46]] 47; CHECK: %[[#bb46]] = OpLabel 48; CHECK: OpBranch %[[#bb44]] 49; CHECK: %[[#bb49]] = OpLabel 50; CHECK: OpBranch %[[#bb47]] 51; CHECK: OpFunctionEnd 52; CHECK: %[[#func_37:]] = OpFunction %[[#void:]] None %[[#]] 53; CHECK: %[[#bb50:]] = OpLabel 54; CHECK: OpReturn 55; CHECK: OpFunctionEnd 56 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 optnone 63define internal spir_func void @main() #0 { 64entry: 65 %0 = call token @llvm.experimental.convergence.entry() 66 %val = alloca i32, align 4 67 %i = alloca i32, align 4 68 %j = alloca i32, align 4 69 %k = alloca i32, align 4 70 store i32 0, ptr %val, align 4 71 store i32 0, ptr %i, align 4 72 store i32 0, ptr %j, align 4 73 store i32 0, ptr %k, align 4 74 br label %while.cond 75 76while.cond: ; preds = %while.end9, %entry 77 %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ] 78 %2 = load i32, ptr %i, align 4 79 %cmp = icmp slt i32 %2, 10 80 br i1 %cmp, label %while.body, label %while.end11 81 82while.body: ; preds = %while.cond 83 %3 = load i32, ptr %val, align 4 84 %4 = load i32, ptr %i, align 4 85 %add = add nsw i32 %3, %4 86 store i32 %add, ptr %val, align 4 87 br label %while.cond1 88 89while.cond1: ; preds = %while.end, %while.body 90 %5 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %1) ] 91 %6 = load i32, ptr %j, align 4 92 %cmp2 = icmp slt i32 %6, 20 93 br i1 %cmp2, label %while.body3, label %while.end9 94 95while.body3: ; preds = %while.cond1 96 br label %while.cond4 97 98while.cond4: ; preds = %while.body6, %while.body3 99 %7 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %5) ] 100 %8 = load i32, ptr %k, align 4 101 %cmp5 = icmp slt i32 %8, 30 102 br i1 %cmp5, label %while.body6, label %while.end 103 104while.body6: ; preds = %while.cond4 105 %9 = load i32, ptr %val, align 4 106 %10 = load i32, ptr %k, align 4 107 %add7 = add nsw i32 %9, %10 108 store i32 %add7, ptr %val, align 4 109 %11 = load i32, ptr %k, align 4 110 %inc = add nsw i32 %11, 1 111 store i32 %inc, ptr %k, align 4 112 br label %while.cond4 113 114while.end: ; preds = %while.cond4 115 %12 = load i32, ptr %val, align 4 116 %mul = mul nsw i32 %12, 2 117 store i32 %mul, ptr %val, align 4 118 %13 = load i32, ptr %j, align 4 119 %inc8 = add nsw i32 %13, 1 120 store i32 %inc8, ptr %j, align 4 121 br label %while.cond1 122 123while.end9: ; preds = %while.cond1 124 %14 = load i32, ptr %i, align 4 125 %inc10 = add nsw i32 %14, 1 126 store i32 %inc10, ptr %i, align 4 127 br label %while.cond 128 129while.end11: ; preds = %while.cond 130 ret void 131} 132 133; Function Attrs: convergent norecurse 134define void @main.1() #1 { 135entry: 136 call void @main() 137 ret void 138} 139 140; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none) 141declare token @llvm.experimental.convergence.entry() #2 142 143; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none) 144declare token @llvm.experimental.convergence.loop() #2 145 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