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TheRock/compiler/amd-llvm/llvm/test/Transforms/CanonicalizeFreezeInLoops/nonsteps-preserve-flags.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

35 lines
1.1 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=canon-freeze -S | FileCheck %s
declare void @call(i32)
define void @add(i32 %init, i32 %n) {
; CHECK-LABEL: @add(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[INIT_FROZEN:%.*]] = freeze i32 [[INIT:%.*]]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[INIT_FROZEN]], [[ENTRY:%.*]] ], [ [[I_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[I_NEXT]] = add i32 [[I]], 1
; CHECK-NEXT: [[NONSTEP:%.*]] = mul nsw i32 [[I]], 2
; CHECK-NEXT: call void @call(i32 [[NONSTEP]])
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[I_NEXT]], [[N:%.*]]
; CHECK-NEXT: br i1 [[COND]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%i = phi i32 [ %init, %entry], [%i.next, %loop ]
%i.next = add nsw i32 %i, 1
%i.next.fr = freeze i32 %i.next
%nonstep = mul nsw i32 %i, 2
call void @call(i32 %nonstep)
%cond = icmp eq i32 %i.next.fr, %n
br i1 %cond, label %loop, label %exit
exit:
ret void
}