Eli Friedman wrote:
> Author: efriedma
> Date: Wed Feb 13 00:55:57 2008
> New Revision: 47050
>
> URL: http://llvm.org/viewvc/llvm-project?rev=47050&view=rev
> Log:
> Add test for PR1996. (This is my first time adding a test for a
> transform, so please review.)
>
>
> Added:
> llvm/trunk/test/Transforms/GVN/2008-02-12UndefLoad.ll
>
> Added: llvm/trunk/test/Transforms/GVN/2008-02-12UndefLoad.ll
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/GVN/2008-02-12UndefLoad.ll?rev=47050&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/Transforms/GVN/2008-02-12UndefLoad.ll (added)
> +++ llvm/trunk/test/Transforms/GVN/2008-02-12UndefLoad.ll Wed Feb 13 00:55:57
> 2008
> @@ -0,0 +1,19 @@
> +; RUN: llvm-as < %s | opt -gvn | llvm-dis | not grep load
You should add:
; PR1996
here to provide a reference next time it fails.
Nick
> +
> +%struct.anon = type { i32, i8, i8, i8, i8 }
> +
> +define i32 @a() {
> +entry:
> + %c = alloca %struct.anon ; <%struct.anon*> [#uses=2]
> + %tmp = getelementptr %struct.anon* %c, i32 0, i32 0 ;
> <i32*> [#uses=1]
> + %tmp1 = getelementptr i32* %tmp, i32 1 ; <i32*> [#uses=2]
> + %tmp2 = load i32* %tmp1, align 4 ; <i32> [#uses=1]
> + %tmp3 = or i32 %tmp2, 11 ; <i32> [#uses=1]
> + %tmp4 = and i32 %tmp3, -21 ; <i32> [#uses=1]
> + store i32 %tmp4, i32* %tmp1, align 4
> + %call = call i32 (...)* @x( %struct.anon* %c ) ; <i32>
> [#uses=0]
> + ret i32 undef
> +}
> +
> +
> +declare i32 @x(...)
>
>
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