File: int_sideeffect.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (15 lines) | stat: -rw-r--r-- 317 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
; RUN: opt -S < %s -passes=dse | FileCheck %s

declare void @llvm.sideeffect()

; Dead store elimination across a @llvm.sideeffect.

; CHECK-LABEL: dse
; CHECK: store
; CHECK-NOT: store
define void @dse(ptr %p) {
    store float 0.0, ptr %p
    call void @llvm.sideeffect()
    store float 0.0, ptr %p
    ret void
}