File: select-1-or-neg1.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
; RUN: llc < %s -mtriple=x86_64-unknown-unknown                      | FileCheck %s --check-prefix=BASE
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=slow-3ops-lea | FileCheck %s --check-prefix=SLOWLEA3

; TODO: Should the 'cmpl' be 'dec' instead?
; TODO: What if 'cmov' is 1 uop and full throughput (Ryzen)?

define i32 @PR28968(i32 %x) {
; BASE-LABEL: PR28968:
; BASE:       # %bb.0:
; BASE-NEXT:    xorl %eax, %eax
; BASE-NEXT:    cmpl $1, %edi
; BASE-NEXT:    sete %al
; BASE-NEXT:    leal -1(%rax,%rax), %eax
; BASE-NEXT:    retq
;
; SLOWLEA3-LABEL: PR28968:
; SLOWLEA3:       # %bb.0:
; SLOWLEA3-NEXT:    xorl %eax, %eax
; SLOWLEA3-NEXT:    cmpl $1, %edi
; SLOWLEA3-NEXT:    sete %al
; SLOWLEA3-NEXT:    leal -1(,%rax,2), %eax
; SLOWLEA3-NEXT:    retq
  %cmp = icmp eq i32 %x, 1
  %sel = select i1 %cmp, i32 1, i32 -1
  ret i32 %sel
}