File: 2008-07-17-addrspace.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (28 lines) | stat: -rw-r--r-- 1,066 bytes parent folder | download | duplicates (5) 
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
 
; This test lets globalopt split the global struct and array into different
; values. This used to crash, because globalopt forgot to put the new var in the
; same address space as the old one.

; RUN: opt < %s -passes=globalopt -S | FileCheck %s

; Check that the new global values still have their address space
; CHECK: addrspace(1) global
; CHECK: addrspace(1) global

@struct = internal addrspace(1) global { i32, i32 } zeroinitializer
@array = internal addrspace(1) global [ 2 x i32 ] zeroinitializer 

define i32 @foo() {
  %A = load i32, ptr addrspace(1) getelementptr ({ i32, i32 }, ptr addrspace(1) @struct, i32 0, i32 0)
  %B = load i32, ptr addrspace(1) @array
  ; Use the loaded values, so they won't get removed completely
  %R = add i32 %A, %B
  ret i32 %R
}

; We put stores in a different function, so that the global variables won't get
; optimized away completely.
define void @bar(i32 %R) {
  store i32 %R, ptr addrspace(1) @array
  store i32 %R, ptr addrspace(1) getelementptr ({ i32, i32 }, ptr addrspace(1) @struct, i32 0, i32 0)
  ret void
}