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[objc-arc] Committed test for r185770 as per dblaikie's suggestion.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185782 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Gottesman 2013-07-08 02:13:47 +00:00
parent d56e7e198d
commit 2abe4eeaf9
1 changed files with 19 additions and 0 deletions
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19
test/Transforms/ObjCARC/gvn.ll
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@ -3,6 +3,8 @@
@x = common global i8* null, align 8 @x = common global i8* null, align 8
declare i8* @objc_retain(i8*) declare i8* @objc_retain(i8*)
declare i32 @objc_sync_enter(i8*)
declare i32 @objc_sync_exit(i8*)
; GVN should be able to eliminate this redundant load, with ARC-specific ; GVN should be able to eliminate this redundant load, with ARC-specific
; alias analysis. ; alias analysis.
@ -20,3 +22,20 @@ entry:
%t = load i8** @x %t = load i8** @x
ret i8* %t ret i8* %t
} }
; GVN should not be able to eliminate this redundant load, with ARC-specific
; alias analysis.
; CHECK: define i8* @test1
; CHECK: load
; CHECK: load
; CHECK: ret i8* %t
; CHECK: }
define i8* @test1(i32 %n) nounwind {
entry:
%s = load i8** @x
%0 = call i32 @objc_sync_enter(i8* %s)
%t = load i8** @x
%1 = call i32 @objc_sync_exit(i8* %s)
ret i8* %t
}