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Constant pointers to objects don't need reference counting.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138242 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2011-08-22 17:29:11 +00:00
parent 986b865c03
commit 1b31ea8f93
2 changed files with 46 additions and 0 deletions
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33
test/Transforms/ObjCARC/basic.ll
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@ -1638,6 +1638,39 @@ entry:
ret void
}
; Constant pointers to objects don't need reference counting.
@constptr = external constant i8*
@something = external global i8*
; CHECK: define void @test60(
; CHECK-NOT: @objc_
; CHECK: }
define void @test60() {
%t = load i8** @constptr
%s = load i8** @something
call i8* @objc_retain(i8* %s)
call void @callee()
call void @use_pointer(i8* %t)
call void @objc_release(i8* %s)
ret void
}
; Constant pointers to objects don't need to be considered related to other
; pointers.
; CHECK: define void @test61(
; CHECK-NOT: @objc_
; CHECK: }
define void @test61() {
%t = load i8** @constptr
call i8* @objc_retain(i8* %t)
call void @callee()
call void @use_pointer(i8* %t)
call void @objc_release(i8* %t)
ret void
}
declare void @bar(i32 ()*)
; A few real-world testcases.