File: align-external.ll

package info (click to toggle)
llvm-toolchain-6.0 1:6.0-1~bpo9+1
  • links: PTS, VCS
  • area: main
  • in suites: stretch-backports
  • size: 594,652 kB
  • sloc: cpp: 3,044,500; ansic: 595,051; asm: 271,890; python: 128,923; objc: 106,554; sh: 21,854; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,214; cs: 2,027; xml: 686; php: 212; csh: 117
file content (41 lines) | stat: -rw-r--r-- 1,069 bytes parent folder | download | duplicates (25)
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
28
29
30
31
32
33
34
35
36
37
38
39
40
41
; RUN: opt < %s -instcombine -S | FileCheck %s

; Don't assume that external global variables or those with weak linkage have
; their preferred alignment. They may only have the ABI minimum alignment.

target datalayout = "i32:8:32"

@A = external global i32
@B = weak_odr global i32 0

@C = available_externally global <4 x i32> zeroinitializer, align 4
; CHECK: @C = available_externally global <4 x i32> zeroinitializer, align 4

define i64 @foo(i64 %a) {
  %t = ptrtoint i32* @A to i64
  %s = shl i64 %a, 3
  %r = or i64 %t, %s
  %q = add i64 %r, 1
  ret i64 %q
}

; CHECK-LABEL: define i64 @foo(i64 %a)
; CHECK: %s = shl i64 %a, 3
; CHECK: %r = or i64 %s, ptrtoint (i32* @A to i64)
; CHECK: %q = add i64 %r, 1
; CHECK: ret i64 %q

define i32 @bar() {
  %r = load i32, i32* @B, align 1
  ret i32 %r
}

; CHECK-LABEL: @bar()
; CHECK: align 1

define void @vec_store() {
  store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* @C, align 4
  ret void
}
; CHECK: define void @vec_store()
; CHECK: store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* @C, align 4