llvm-for-llvmta/test/CodeGen/AArch64/neg-abs.ll

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2022-04-25 10:02:23 +02:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs \
; RUN: -mtriple=aarch64-unknown-unknown < %s | FileCheck %s
declare i64 @llvm.abs.i64(i64, i1 immarg)
define i64@neg_abs(i64 %x) {
; CHECK-LABEL: neg_abs:
; CHECK: // %bb.0:
; CHECK-NEXT: cmp x0, #0 // =0
; CHECK-NEXT: cneg x8, x0, mi
; CHECK-NEXT: neg x0, x8
; CHECK-NEXT: ret
%abs = tail call i64 @llvm.abs.i64(i64 %x, i1 true)
%neg = sub nsw i64 0, %abs
ret i64 %neg
}