File: peephole-csel.ll

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llvm-toolchain-20 1%3A20.1.8-1
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=aarch64 < %s | FileCheck %s

define void @peephole_csel(ptr %dst, i1 %0, i1 %cmp) {
; CHECK-LABEL: peephole_csel:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    tst w2, #0x1
; CHECK-NEXT:    mov w8, #1 // =0x1
; CHECK-NEXT:    mov x9, xzr
; CHECK-NEXT:    tst w1, #0x1
; CHECK-NEXT:    csel x8, x8, x9, eq
; CHECK-NEXT:    str x8, [x0]
; CHECK-NEXT:    ret
entry:
  br i1 %0, label %then, label %exit

then:                                             ; preds = %entry
  ; The donothing() is needed to make make this block less interesting to
  ; SimplifyCFG. Otherwise we may not get the csel that we want to test.
  call void @llvm.donothing()
  br i1 %cmp, label %true, label %exit

true:                                             ; preds = %then
  ; Same as above
  call void @llvm.donothing()
  br label %exit

exit: ; preds = %true, %then, %entry
  %x = phi i64 [ 0, %true ], [ 0, %then ], [ 1, %entry ]
  store i64 %x, ptr %dst, align 8
  ret void
}