llvm/test/CodeGen/SPIRV/structurizer/do-break.ll

; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %}
; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | FileCheck %s --match-full-lines

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 internal spir_func void @main() #1 {
; CHECK: %[[#entry:]] = OpLabel
; CHECK:                OpBranch %[[#do_body:]]
entry:
  %0 = call token @llvm.experimental.convergence.entry()
  %val = alloca i32, align 4
  %i = alloca i32, align 4
  store i32 0, ptr %val, align 4
  store i32 0, ptr %i, align 4
  br label %do.body

; CHECK:    %[[#do_body]] = OpLabel
; CHECK:                    OpSelectionMerge %[[#do_end:]] None
; CHECK:                    OpBranchConditional %[[#cond:]] %[[#do_end]] %[[#if_end:]]
do.body:
  %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
  %2 = load i32, ptr %i, align 4
  %inc = add nsw i32 %2, 1
  store i32 %inc, ptr %i, align 4
  %3 = load i32, ptr %i, align 4
  %cmp = icmp sgt i32 %3, 5
  br i1 %cmp, label %if.then, label %if.end

; CHECK:  %[[#if_end]] = OpLabel
; CHECK:                 OpBranch %[[#do_end]]
if.end:
  %4 = load i32, ptr %i, align 4
  store i32 %4, ptr %val, align 4
  br label %do.end

; Block is removed.
if.then:
  br label %do.end

; CHECK:  %[[#do_end]] = OpLabel
; CHECK:                 OpBranch %[[#do_body2:]]
do.end:
  br label %do.body2

; CHECK:  %[[#do_body2]] = OpLabel
; CHECK:                   OpBranch %[[#do_body4:]]
do.body2:
  %6 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
  %7 = load i32, ptr %i, align 4
  %inc3 = add nsw i32 %7, 1
  store i32 %inc3, ptr %i, align 4
  br label %do.body4

; CHECK:  %[[#do_body4]] = OpLabel
; CHECK:                   OpBranch %[[#do_end8:]]
do.body4:
  %8 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %6) ]
  %9 = load i32, ptr %val, align 4
  %inc5 = add nsw i32 %9, 1
  store i32 %inc5, ptr %val, align 4
  br label %do.end8

; CHECK:  %[[#do_end8]] = OpLabel
; CHECK:                  OpBranch %[[#do_end11:]]
do.end8:
  %11 = load i32, ptr %i, align 4
  %dec = add nsw i32 %11, -1
  store i32 %dec, ptr %i, align 4
  br label %do.end11

; CHECK:  %[[#do_end11]] = OpLabel
; CHECK:                   OpReturn
do.end11:
  ret void

}


declare token @llvm.experimental.convergence.entry() #0
declare token @llvm.experimental.convergence.loop() #0

attributes #0 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }
attributes #1 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }

!llvm.module.flags = !{!0, !1}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 4, !"dx.disable_optimizations", i32 1}