File: pr26510.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (27 lines) | stat: -rw-r--r-- 868 bytes parent folder | download | duplicates (14) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
; RUN: opt -S -passes='require<globals-aa>,function-attrs' < %s | FileCheck %s
; RUN: opt -S -O3 < %s | FileCheck %s

; Apart from checking for the direct cause of the bug, we also check
; if any problematic aliasing rules have accidentally snuck into -O3.
;
; Since the "abc" operand bundle is not a special operand bundle that
; LLVM knows about, all of the stores and loads in @test below have to
; stay.

declare void @foo() readnone

; CHECK-LABEL: define ptr @test(ptr %p)
; CHECK:   %a = alloca ptr, align 8
; CHECK:   store ptr %p, ptr %a, align 8
; CHECK:   call void @foo() [ "abc"(ptr %a) ]
; CHECK:   %reload = load ptr, ptr %a, align 8
; CHECK:   ret ptr %reload
; CHECK: }

define ptr @test(ptr %p) {
  %a = alloca ptr, align 8
  store ptr %p, ptr %a, align 8
  call void @foo() ["abc" (ptr %a)]
  %reload = load ptr, ptr %a, align 8
  ret ptr %reload
}