File: simple-preservation.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (17 lines) | stat: -rw-r--r-- 810 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -aa-pipeline=basic-aa -passes=dse -enable-knowledge-retention -S | FileCheck %s

target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"

define void @test1(ptr %Q, ptr %P) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[Q:%.*]], i64 4), "nonnull"(ptr [[Q]]), "align"(ptr [[Q]], i64 4) ]
; CHECK-NEXT:    call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[P:%.*]], i64 4), "nonnull"(ptr [[P]]), "align"(ptr [[P]], i64 4) ]
; CHECK-NEXT:    store i32 0, ptr [[P]], align 4
; CHECK-NEXT:    ret void
;
  %DEAD = load i32, ptr %Q
  store i32 %DEAD, ptr %P
  store i32 0, ptr %P
  ret void
}