File: dagcombine-drop-flags-freeze.ll

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llvm-toolchain-20 1%3A20.1.6-1~exp1
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc -mtriple=arm-eabi -o - %s | FileCheck %s

; Ensure poison-generating flags are stripped by the time a freeze operand is visited.

define i1 @drop_flags(i32 noundef %numentries, i64 %cond, i64 %arg) {
; CHECK-LABEL: drop_flags:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    ldm sp, {r1, r12}
; CHECK-NEXT:    subs r1, r2, r1
; CHECK-NEXT:    sbcs r1, r3, r12
; CHECK-NEXT:    movlo r0, r2
; CHECK-NEXT:    rsbs r1, r0, #0
; CHECK-NEXT:    adc r0, r0, r1
; CHECK-NEXT:    mov pc, lr
entry:
  %cmp4 = icmp samesign ult i64 %cond, %arg
  %conv6 = trunc nuw i64 %cond to i32
  %spec.select = select i1 %cmp4, i32 %conv6, i32 %numentries
  %spec.select.fr = freeze i32 %spec.select
  %cmpz = icmp eq i32 %spec.select.fr, 0
  ret i1 %cmpz
}