0d8cd4e2d5
Add a comment when there is a shifted value,
add x9, x0, #291, lsl #12 ; =1191936
but not when the immediate value is unshifted,
subs x9, x0, #256 ; =256
when the comment adds nothing additional to the reader.
Differential Revision: https://reviews.llvm.org/D107196
17 lines
468 B
LLVM
17 lines
468 B
LLVM
; 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
|
|
; 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
|
|
}
|
|
|