File: sub1.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (16 lines) | stat: -rw-r--r-- 474 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=aarch64-unknown-unknown | FileCheck %s

define i64 @sub1_disguised_constant(i64 %x) {
; CHECK-LABEL: sub1_disguised_constant:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub w8, w0, #1 // =1
; CHECK-NEXT:    and w8, w0, w8
; CHECK-NEXT:    and x0, x8, #0xffff
; CHECK-NEXT:    ret
  %a1 = and i64 %x, 65535
  %a2 = add i64 %x, 65535
  %r = and i64 %a1, %a2
  ret i64 %r
}