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1; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | FileCheck %s --match-full-lines2; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %}3 4target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1"5target triple = "spirv-unknown-vulkan1.3-compute"6 7define spir_func noundef i32 @_Z3foov() #0 {8entry:9 %0 = call token @llvm.experimental.convergence.entry()10 ret i32 111}12 13define internal spir_func void @main() #2 {14; CHECK: %[[#entry:]] = OpLabel15; CHECK: OpBranch %[[#do_header:]]16entry:17 %0 = call token @llvm.experimental.convergence.entry()18 %var = alloca i32, align 419 br label %do_header20 21; Here a the loop header had to be split in two:22; - 1 header for the loop23; - 1 header for the condition.24 25; CHECK: %[[#do_header:]] = OpLabel26; CHECK: OpLoopMerge %[[#do_merge:]] %[[#do_latch:]] None27; CHECK: OpBranch %[[#new_header:]]28 29; CHECK: %[[#new_header]] = OpLabel30; CHECK: OpSelectionMerge %[[#if_merge:]] None31; CHECK: OpBranchConditional %[[#]] %[[#if_then:]] %[[#if_end:]]32do_header:33 %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]34 store i32 0, ptr %var35 br i1 true, label %if.then, label %if.end36 37; CHECK: %[[#if_end]] = OpLabel38; CHECK: OpBranch %[[#if_merge]]39if.end:40 store i32 0, ptr %var41 br label %do_latch42 43; CHECK: %[[#if_then]] = OpLabel44; CHECK: OpBranch %[[#if_merge]]45if.then:46 store i32 0, ptr %var47 br label %do_latch48 49; CHECK: %[[#if_merge]] = OpLabel50; CHECK: OpBranchConditional %[[#]] %[[#do_latch]] %[[#do_merge]]51 52; CHECK: %[[#do_merge]] = OpLabel53; CHECK: OpBranch %[[#do2_header:]]54do.end:55 store i32 0, ptr %var56 br label %do2_header57 58; CHECK: %[[#do2_header]] = OpLabel59; CHECK: OpLoopMerge %[[#do2_merge:]] %[[#do2_continue:]] None60; CHECK: OpBranch %[[#do3_header:]]61do2_header:62 %6 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]63 store i32 0, ptr %var64 br label %do3_header65 66; CHECK: %[[#do3_header]] = OpLabel67; CHECK: OpLoopMerge %[[#do3_merge:]] %[[#do3_continue:]] None68; CHECK: OpBranch %[[#do3_body:]]69do3_header:70 %8 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %6) ]71 store i32 0, ptr %var72 br label %do3_continue73 74; CHECK: %[[#do3_body]] = OpLabel75; CHECK: OpBranchConditional %[[#]] %[[#do3_continue]] %[[#do3_merge]]76 77; CHECK: %[[#do3_merge]] = OpLabel78; CHECK: OpBranch %[[#do2_new_latch:]]79do3_merge:80 store i32 0, ptr %var81 br label %do2_continue82 83; CHECK: %[[#do2_new_latch]] = OpLabel84; CHECK: OpBranchConditional %[[#]] %[[#do2_continue]] %[[#do2_merge]]85 86; CHECK: %[[#do2_merge]] = OpLabel87; CHECK: OpReturn88do2_merge:89 ret void90 91; CHECK: %[[#do2_continue]] = OpLabel92; CHECK: OpBranch %[[#do2_header]]93do2_continue:94 store i32 0, ptr %var95 br i1 true, label %do2_header, label %do2_merge96 97; CHECK: %[[#do3_continue]] = OpLabel98; CHECK: OpBranch %[[#do3_header]]99do3_continue:100 store i32 0, ptr %var101 br i1 true, label %do3_header, label %do3_merge102 103; CHECK: %[[#do_latch]] = OpLabel104; CHECK: OpBranch %[[#do_header]]105do_latch:106 store i32 0, ptr %var107 br i1 true, label %do_header, label %do.end108}109 110declare token @llvm.experimental.convergence.entry() #1111declare token @llvm.experimental.convergence.loop() #1112 113attributes #0 = { convergent noinline nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }114attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }115attributes #2 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }116attributes #3 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }117 118!llvm.module.flags = !{!0, !1, !2}119 120!0 = !{i32 1, !"wchar_size", i32 4}121!1 = !{i32 4, !"dx.disable_optimizations", i32 1}122!2 = !{i32 7, !"frame-pointer", i32 2}123