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 foo() { return true; } 6; 7; [numthreads(1, 1, 1)] 8; void main() { 9; int val = 0; 10; int i = 0; 11; 12; while (i < 10) { 13; val = i; 14; if (val > 5) { 15; break; 16; } 17; 18; if (val > 6) { 19; break; 20; break; // No SPIR-V should be emitted for this statement. 21; val++; // No SPIR-V should be emitted for this statement. 22; while(true); // No SPIR-V should be emitted for this statement. 23; --i; // No SPIR-V should be emitted for this statement. 24; } 25; } 26; 27; //////////////////////////////////////////////////////////////////////////////// 28; // Nested while loops with break statements // 29; // Each break statement should branch to the corresponding loop's break block // 30; //////////////////////////////////////////////////////////////////////////////// 31; 32; while (true) { 33; i++; 34; while(i<20) { 35; val = i; 36; {{break;}} 37; } 38; --i; 39; break; 40; } 41; } 42 43; CHECK: %[[#func_16:]] = OpFunction %[[#uint:]] DontInline %[[#]] 44; CHECK: %[[#bb44:]] = OpLabel 45; CHECK: OpReturnValue %[[#]] 46; CHECK: OpFunctionEnd 47; CHECK: %[[#func_19:]] = OpFunction %[[#void:]] DontInline %[[#]] 48; CHECK: %[[#bb45:]] = OpLabel 49; CHECK: OpBranch %[[#bb46:]] 50; CHECK: %[[#bb46:]] = OpLabel 51; CHECK: OpLoopMerge %[[#bb47:]] %[[#bb48:]] None 52; CHECK: OpBranchConditional %[[#]] %[[#bb49:]] %[[#bb47:]] 53; CHECK: %[[#bb49:]] = OpLabel 54; CHECK: OpBranchConditional %[[#]] %[[#bb47:]] %[[#bb50:]] 55; CHECK: %[[#bb50:]] = OpLabel 56; CHECK: OpBranchConditional %[[#]] %[[#bb47:]] %[[#bb48:]] 57; CHECK: %[[#bb48:]] = OpLabel 58; CHECK: OpBranch %[[#bb46:]] 59; CHECK: %[[#bb47:]] = OpLabel 60; CHECK: OpSelectionMerge %[[#bb51:]] None 61; CHECK: OpSwitch %[[#]] %[[#bb51:]] 1 %[[#bb51:]] 2 %[[#bb51:]] 62; CHECK: %[[#bb51:]] = OpLabel 63; CHECK: OpBranch %[[#bb52:]] 64; CHECK: %[[#bb52:]] = OpLabel 65; CHECK: OpBranch %[[#bb53:]] 66; CHECK: %[[#bb53:]] = OpLabel 67; CHECK: OpBranch %[[#bb54:]] 68; CHECK: %[[#bb54:]] = OpLabel 69; CHECK: OpSelectionMerge %[[#bb55:]] None 70; CHECK: OpBranchConditional %[[#]] %[[#bb56:]] %[[#bb55:]] 71; CHECK: %[[#bb56:]] = OpLabel 72; CHECK: OpBranch %[[#bb55:]] 73; CHECK: %[[#bb55:]] = OpLabel 74; CHECK: OpBranch %[[#bb57:]] 75; CHECK: %[[#bb57:]] = OpLabel 76; CHECK: OpReturn 77; CHECK: OpFunctionEnd 78; CHECK: %[[#func_40:]] = OpFunction %[[#void:]] None %[[#]] 79; CHECK: %[[#bb58:]] = OpLabel 80; CHECK: OpReturn 81; CHECK: OpFunctionEnd 82 83target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1" 84target triple = "spirv-unknown-vulkan1.3-compute" 85 86; Function Attrs: convergent noinline norecurse nounwind optnone 87define spir_func noundef i32 @_Z3foov() #0 { 88entry: 89 %0 = call token @llvm.experimental.convergence.entry() 90 ret i32 1 91} 92 93; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none) 94declare token @llvm.experimental.convergence.entry() #1 95 96; Function Attrs: convergent noinline norecurse nounwind optnone 97define internal spir_func void @main() #0 { 98entry: 99 %0 = call token @llvm.experimental.convergence.entry() 100 %val = alloca i32, align 4 101 %i = alloca i32, align 4 102 store i32 0, ptr %val, align 4 103 store i32 0, ptr %i, align 4 104 br label %while.cond 105 106while.cond: ; preds = %if.end4, %entry 107 %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ] 108 %2 = load i32, ptr %i, align 4 109 %cmp = icmp slt i32 %2, 10 110 br i1 %cmp, label %while.body, label %while.end 111 112while.body: ; preds = %while.cond 113 %3 = load i32, ptr %i, align 4 114 store i32 %3, ptr %val, align 4 115 %4 = load i32, ptr %val, align 4 116 %cmp1 = icmp sgt i32 %4, 5 117 br i1 %cmp1, label %if.then, label %if.end 118 119if.then: ; preds = %while.body 120 br label %while.end 121 122if.end: ; preds = %while.body 123 %5 = load i32, ptr %val, align 4 124 %cmp2 = icmp sgt i32 %5, 6 125 br i1 %cmp2, label %if.then3, label %if.end4 126 127if.then3: ; preds = %if.end 128 br label %while.end 129 130if.end4: ; preds = %if.end 131 br label %while.cond 132 133while.end: ; preds = %if.then3, %if.then, %while.cond 134 br label %while.cond5 135 136while.cond5: ; preds = %while.end 137 %6 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ] 138 br label %while.body6 139 140while.body6: ; preds = %while.cond5 141 %7 = load i32, ptr %i, align 4 142 %inc = add nsw i32 %7, 1 143 store i32 %inc, ptr %i, align 4 144 br label %while.cond7 145 146while.cond7: ; preds = %while.body6 147 %8 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %6) ] 148 %9 = load i32, ptr %i, align 4 149 %cmp8 = icmp slt i32 %9, 20 150 br i1 %cmp8, label %while.body9, label %while.end10 151 152while.body9: ; preds = %while.cond7 153 %10 = load i32, ptr %i, align 4 154 store i32 %10, ptr %val, align 4 155 br label %while.end10 156 157while.end10: ; preds = %while.body9, %while.cond7 158 %11 = load i32, ptr %i, align 4 159 %dec = add nsw i32 %11, -1 160 store i32 %dec, ptr %i, align 4 161 br label %while.end11 162 163while.end11: ; preds = %while.end10 164 ret void 165} 166 167; Function Attrs: convergent norecurse 168define void @main.1() #2 { 169entry: 170 call void @main() 171 ret void 172} 173 174; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none) 175declare token @llvm.experimental.convergence.loop() #1 176 177attributes #0 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 178attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) } 179attributes #2 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 180 181!llvm.module.flags = !{!0, !1, !2} 182 183 184!0 = !{i32 1, !"wchar_size", i32 4} 185!1 = !{i32 4, !"dx.disable_optimizations", i32 1} 186!2 = !{i32 7, !"frame-pointer", i32 2} 187 188 189