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TheRock/compiler/amd-llvm/llvm/test/Transforms/StructurizeCFG/loop-continue-phi.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

42 lines
1.2 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -o - -structurizecfg < %s | FileCheck %s
define void @test1(i1 %arg) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ARG_INV:%.*]] = xor i1 [[ARG:%.*]], true
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: Flow:
; CHECK-NEXT: br label [[FLOW1:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[CTR:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[CTR_NEXT:%.*]], [[FLOW1]] ]
; CHECK-NEXT: [[CTR_NEXT]] = add i32 [[CTR]], 1
; CHECK-NEXT: br i1 [[ARG_INV]], label [[LOOP_A:%.*]], label [[FLOW1]]
; CHECK: loop.a:
; CHECK-NEXT: br i1 [[ARG_INV]], label [[LOOP_B:%.*]], label [[FLOW:%.*]]
; CHECK: loop.b:
; CHECK-NEXT: br label [[FLOW]]
; CHECK: Flow1:
; CHECK-NEXT: [[TMP0:%.*]] = phi i1 [ false, [[FLOW]] ], [ true, [[LOOP]] ]
; CHECK-NEXT: br i1 [[TMP0]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%ctr = phi i32 [ 0, %entry ], [ %ctr.next, %loop.a ], [ %ctr.next, %loop.b ]
%ctr.next = add i32 %ctr, 1
br i1 %arg, label %exit, label %loop.a
loop.a:
br i1 %arg, label %loop, label %loop.b
loop.b:
br label %loop
exit:
ret void
}