File: disable-shrink-store.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (18 lines) | stat: -rw-r--r-- 577 bytes parent folder | download | duplicates (8) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-- -combiner-shrink-load-replace-store-with-store=false | FileCheck %s

define void @shrink(i16* %ptr) {
; CHECK-LABEL: shrink:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    movzbl (%rdi), %eax
; CHECK-NEXT:    orl $25600, %eax # imm = 0x6400
; CHECK-NEXT:    movw %ax, (%rdi)
; CHECK-NEXT:    retq
entry:
  %val = load i16, i16* %ptr
  %masked_val = and i16 %val, 255
  %replaced_val = or i16 %masked_val, 25600
  store i16 %replaced_val, i16* %ptr
  ret void
}