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; int process() { 6; int val = 0; 7; 8; for (int i = 0; i < 10; ++i) { 9; val = val + i; 10; 11; for (int j = 0; j < 2; ++j) { 12; for (int k = 0; k < 2; ++k) { 13; val = val + k; 14; } 15; 16; val = val * 2; 17; 18; } 19; } 20; return val; 21; } 22; 23; [numthreads(1, 1, 1)] 24; void main() { 25; process(); 26; } 27 28; CHECK: %[[#func_11:]] = OpFunction %[[#uint:]] DontInline %[[#]] 29; CHECK: %[[#bb41:]] = OpLabel 30; CHECK: OpBranch %[[#bb42:]] 31; CHECK: %[[#bb42]] = OpLabel 32; CHECK: OpLoopMerge %[[#bb43:]] %[[#bb44:]] None 33; CHECK: OpBranchConditional %[[#]] %[[#bb45:]] %[[#bb43]] 34 ; CHECK: %[[#bb43]] = OpLabel 35 ; CHECK: OpReturnValue %[[#]] 36 37 ; CHECK: %[[#bb45]] = OpLabel 38 ; CHECK: OpBranch %[[#bb46:]] 39 ; CHECK: %[[#bb46]] = OpLabel 40 ; CHECK: OpLoopMerge %[[#bb47:]] %[[#bb48:]] None 41 ; CHECK: OpBranchConditional %[[#]] %[[#bb49:]] %[[#bb47]] 42 ; CHECK: %[[#bb47]] = OpLabel 43 ; CHECK: OpBranch %[[#bb44]] 44 ; CHECK: %[[#bb44]] = OpLabel 45 ; CHECK: OpBranch %[[#bb42]] 46 47 ; CHECK: %[[#bb49]] = OpLabel 48 ; CHECK: OpBranch %[[#bb50:]] 49 ; CHECK: %[[#bb50]] = OpLabel 50 ; CHECK: OpLoopMerge %[[#bb51:]] %[[#bb52:]] None 51 ; CHECK: OpBranchConditional %[[#]] %[[#bb53:]] %[[#bb51]] 52 ; CHECK: %[[#bb51]] = OpLabel 53 ; CHECK: OpBranch %[[#bb48]] 54 ; CHECK: %[[#bb48]] = OpLabel 55 ; CHECK: OpBranch %[[#bb46]] 56 57 ; CHECK: %[[#bb53]] = OpLabel 58 ; CHECK: OpBranch %[[#bb52]] 59 ; CHECK: %[[#bb52]] = OpLabel 60 ; CHECK: OpBranch %[[#bb50]] 61; CHECK: OpFunctionEnd 62 63; CHECK: %[[#func_37:]] = OpFunction %[[#void:]] DontInline %[[#]] 64; CHECK: %[[#bb54:]] = OpLabel 65; CHECK: OpReturn 66; CHECK: OpFunctionEnd 67 68; CHECK: %[[#func_39:]] = OpFunction %[[#void:]] None %[[#]] 69; CHECK: %[[#bb55:]] = OpLabel 70; CHECK: OpReturn 71; CHECK: OpFunctionEnd 72 73 74 75target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1" 76target triple = "spirv-unknown-vulkan1.3-compute" 77 78; Function Attrs: convergent noinline norecurse nounwind optnone 79define spir_func noundef i32 @_Z7processv() #0 { 80entry: 81 %0 = call token @llvm.experimental.convergence.entry() 82 %val = alloca i32, align 4 83 %i = alloca i32, align 4 84 %j = alloca i32, align 4 85 %k = alloca i32, align 4 86 store i32 0, ptr %val, align 4 87 store i32 0, ptr %i, align 4 88 br label %for.cond 89 90for.cond: ; preds = %for.inc11, %entry 91 %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ] 92 %2 = load i32, ptr %i, align 4 93 %cmp = icmp slt i32 %2, 10 94 br i1 %cmp, label %for.body, label %for.end13 95 96for.body: ; preds = %for.cond 97 %3 = load i32, ptr %val, align 4 98 %4 = load i32, ptr %i, align 4 99 %add = add nsw i32 %3, %4 100 store i32 %add, ptr %val, align 4 101 store i32 0, ptr %j, align 4 102 br label %for.cond1 103 104for.cond1: ; preds = %for.inc8, %for.body 105 %5 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %1) ] 106 %6 = load i32, ptr %j, align 4 107 %cmp2 = icmp slt i32 %6, 2 108 br i1 %cmp2, label %for.body3, label %for.end10 109 110for.body3: ; preds = %for.cond1 111 store i32 0, ptr %k, align 4 112 br label %for.cond4 113 114for.cond4: ; preds = %for.inc, %for.body3 115 %7 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %5) ] 116 %8 = load i32, ptr %k, align 4 117 %cmp5 = icmp slt i32 %8, 2 118 br i1 %cmp5, label %for.body6, label %for.end 119 120for.body6: ; preds = %for.cond4 121 %9 = load i32, ptr %val, align 4 122 %10 = load i32, ptr %k, align 4 123 %add7 = add nsw i32 %9, %10 124 store i32 %add7, ptr %val, align 4 125 br label %for.inc 126 127for.inc: ; preds = %for.body6 128 %11 = load i32, ptr %k, align 4 129 %inc = add nsw i32 %11, 1 130 store i32 %inc, ptr %k, align 4 131 br label %for.cond4 132 133for.end: ; preds = %for.cond4 134 %12 = load i32, ptr %val, align 4 135 %mul = mul nsw i32 %12, 2 136 store i32 %mul, ptr %val, align 4 137 br label %for.inc8 138 139for.inc8: ; preds = %for.end 140 %13 = load i32, ptr %j, align 4 141 %inc9 = add nsw i32 %13, 1 142 store i32 %inc9, ptr %j, align 4 143 br label %for.cond1 144 145for.end10: ; preds = %for.cond1 146 br label %for.inc11 147 148for.inc11: ; preds = %for.end10 149 %14 = load i32, ptr %i, align 4 150 %inc12 = add nsw i32 %14, 1 151 store i32 %inc12, ptr %i, align 4 152 br label %for.cond 153 154for.end13: ; preds = %for.cond 155 %15 = load i32, ptr %val, align 4 156 ret i32 %15 157} 158 159; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none) 160declare token @llvm.experimental.convergence.entry() #1 161 162; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none) 163declare token @llvm.experimental.convergence.loop() #1 164 165; Function Attrs: convergent noinline norecurse nounwind optnone 166define internal spir_func void @main() #0 { 167entry: 168 %0 = call token @llvm.experimental.convergence.entry() 169 %call1 = call spir_func noundef i32 @_Z7processv() #3 [ "convergencectrl"(token %0) ] 170 ret void 171} 172 173; Function Attrs: convergent norecurse 174define void @main.1() #2 { 175entry: 176 call void @main() 177 ret void 178} 179 180attributes #0 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 181attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) } 182attributes #2 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 183attributes #3 = { convergent } 184 185!llvm.module.flags = !{!0, !1, !2} 186 187 188!0 = !{i32 1, !"wchar_size", i32 4} 189!1 = !{i32 4, !"dx.disable_optimizations", i32 1} 190!2 = !{i32 7, !"frame-pointer", i32 2} 191 192 193