File: simple-preservation.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (17 lines) | stat: -rw-r--r-- 822 bytes parent folder | download | duplicates (7) 
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(i32* %Q, i32* %P) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    call void @llvm.assume(i1 true) [ "dereferenceable"(i32* [[Q:%.*]], i64 4), "nonnull"(i32* [[Q]]), "align"(i32* [[Q]], i64 4) ]
; CHECK-NEXT:    call void @llvm.assume(i1 true) [ "dereferenceable"(i32* [[P:%.*]], i64 4), "nonnull"(i32* [[P]]), "align"(i32* [[P]], i64 4) ]
; CHECK-NEXT:    store i32 0, i32* [[P]], align 4
; CHECK-NEXT:    ret void
;
  %DEAD = load i32, i32* %Q
  store i32 %DEAD, i32* %P
  store i32 0, i32* %P
  ret void
}