1 ; We know that strcpy cannot be used to copy pointer values, because
2 ; pointers might contain null bytes and would stop the copy. The code
3 ; has no defined way to check for this, so DSA can know that strcpy doesn't
4 ; require merging the input arguments.
6 ; RUN: analyze %s -datastructure-gc --dsgc-abort-if-merged=A,B --dsgc-check-flags=A:ASM,B:ASR --dsgc-dspass=bu
10 internal void %strcpy(sbyte* %s1, sbyte* %s2) {
14 loopentry: ; preds = %entry, %loopentry
15 %cann-indvar = phi uint [ 0, %entry ], [ %next-indvar, %loopentry ] ; <uint> [#uses=2]
16 %cann-indvar1 = cast uint %cann-indvar to long ; <long> [#uses=2]
17 %s1_addr.0 = getelementptr sbyte* %s1, long %cann-indvar1 ; <sbyte*> [#uses=1]
18 %s2_addr.0 = getelementptr sbyte* %s2, long %cann-indvar1 ; <sbyte*> [#uses=1]
19 %next-indvar = add uint %cann-indvar, 1 ; <uint> [#uses=1]
20 %tmp.3 = load sbyte* %s2_addr.0 ; <sbyte> [#uses=2]
21 store sbyte %tmp.3, sbyte* %s1_addr.0
22 %tmp.4 = setne sbyte %tmp.3, 0 ; <bool> [#uses=1]
23 br bool %tmp.4, label %loopentry, label %loopexit
25 loopexit: ; preds = %loopentry
32 call void %strcpy(sbyte* %A, sbyte* %B)