File: disable-shrink-store.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (18 lines) | stat: -rw-r--r-- 574 bytes parent folder | download | duplicates (13) 
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(ptr %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, ptr %ptr
  %masked_val = and i16 %val, 255
  %replaced_val = or i16 %masked_val, 25600
  store i16 %replaced_val, ptr %ptr
  ret void
}