; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | FileCheck %s --match-full-lines ; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %} 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" define spir_func noundef i32 @_Z3foov() #0 { entry: %0 = call token @llvm.experimental.convergence.entry() ret i32 1 } define internal spir_func void @main() #2 { ; CHECK: %[[#entry:]] = OpLabel ; CHECK: OpBranch %[[#do_header:]] entry: %0 = call token @llvm.experimental.convergence.entry() %var = alloca i32, align 4 br label %do_header ; Here a the loop header had to be split in two: ; - 1 header for the loop ; - 1 header for the condition. ; CHECK: %[[#do_header:]] = OpLabel ; CHECK: OpLoopMerge %[[#do_merge:]] %[[#do_latch:]] None ; CHECK: OpBranch %[[#new_header:]] ; CHECK: %[[#new_header]] = OpLabel ; CHECK: OpSelectionMerge %[[#if_merge:]] None ; CHECK: OpBranchConditional %[[#]] %[[#if_then:]] %[[#if_end:]] do_header: %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ] store i32 0, ptr %var br i1 true, label %if.then, label %if.end ; CHECK: %[[#if_end]] = OpLabel ; CHECK: OpBranch %[[#if_merge]] if.end: store i32 0, ptr %var br label %do_latch ; CHECK: %[[#if_then]] = OpLabel ; CHECK: OpBranch %[[#if_merge]] if.then: store i32 0, ptr %var br label %do_latch ; CHECK: %[[#if_merge]] = OpLabel ; CHECK: OpBranchConditional %[[#]] %[[#do_latch]] %[[#do_merge]] ; CHECK: %[[#do_merge]] = OpLabel ; CHECK: OpBranch %[[#do2_header:]] do.end: store i32 0, ptr %var br label %do2_header ; CHECK: %[[#do2_header]] = OpLabel ; CHECK: OpLoopMerge %[[#do2_merge:]] %[[#do2_continue:]] None ; CHECK: OpBranch %[[#do3_header:]] do2_header: %6 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ] store i32 0, ptr %var br label %do3_header ; CHECK: %[[#do3_header]] = OpLabel ; CHECK: OpLoopMerge %[[#do3_merge:]] %[[#do3_continue:]] None ; CHECK: OpBranch %[[#do3_body:]] do3_header: %8 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %6) ] store i32 0, ptr %var br label %do3_continue ; CHECK: %[[#do3_body]] = OpLabel ; CHECK: OpBranchConditional %[[#]] %[[#do3_continue]] %[[#do3_merge]] ; CHECK: %[[#do3_merge]] = OpLabel ; CHECK: OpBranch %[[#do2_new_latch:]] do3_merge: store i32 0, ptr %var br label %do2_continue ; CHECK: %[[#do2_new_latch]] = OpLabel ; CHECK: OpBranchConditional %[[#]] %[[#do2_continue]] %[[#do2_merge]] ; CHECK: %[[#do2_merge]] = OpLabel ; CHECK: OpReturn do2_merge: ret void ; CHECK: %[[#do2_continue]] = OpLabel ; CHECK: OpBranch %[[#do2_header]] do2_continue: store i32 0, ptr %var br i1 true, label %do2_header, label %do2_merge ; CHECK: %[[#do3_continue]] = OpLabel ; CHECK: OpBranch %[[#do3_header]] do3_continue: store i32 0, ptr %var br i1 true, label %do3_header, label %do3_merge ; CHECK: %[[#do_latch]] = OpLabel ; CHECK: OpBranch %[[#do_header]] do_latch: store i32 0, ptr %var br i1 true, label %do_header, label %do.end } declare token @llvm.experimental.convergence.entry() #1 declare token @llvm.experimental.convergence.loop() #1 attributes #0 = { convergent noinline nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) } attributes #2 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } attributes #3 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } !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}