File: index-size.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (19 lines) | stat: -rw-r--r-- 703 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; RUN: opt -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output %s 2>&1 | FileCheck %s

target datalayout = "p:64:64:64:32"

; gep.1 and gep.2 must alias, because they are truncated to the index size
; (32-bit), not the pointer size (64-bit).
define void @mustalias_due_to_index_size(i8* %ptr) {
; CHECK-LABEL: Function: mustalias_due_to_index_size
; CHECK-NEXT: MustAlias: i8* %gep.1, i8* %ptr
; CHECK-NEXT: MustAlias: i8* %gep.2, i8* %ptr
; CHECK-NEXT: MustAlias: i8* %gep.1, i8* %gep.2
;
  load i8, i8* %ptr
  %gep.1 = getelementptr i8, i8* %ptr, i64 4294967296
  store i8 0, i8* %gep.1
  %gep.2 = getelementptr i8, i8* %ptr, i64 0
  store i8 1, i8* %gep.2
  ret void
}