1; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info |& FileCheck %s
2
3; When merging MustAlias and PartialAlias, merge to PartialAlias
4; instead of MayAlias.
5
6
7target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
8
9; CHECK: PartialAlias:  i16* %bigbase0, i8* %phi
10define i8 @test0(i8* %base, i1 %x) {
11entry:
12  %baseplusone = getelementptr i8* %base, i64 1
13  br i1 %x, label %red, label %green
14red:
15  br label %green
16green:
17  %phi = phi i8* [ %baseplusone, %red ], [ %base, %entry ]
18  store i8 0, i8* %phi
19
20  %bigbase0 = bitcast i8* %base to i16*
21  store i16 -1, i16* %bigbase0
22
23  %loaded = load i8* %phi
24  ret i8 %loaded
25}
26
27; CHECK: PartialAlias:  i16* %bigbase1, i8* %sel
28define i8 @test1(i8* %base, i1 %x) {
29entry:
30  %baseplusone = getelementptr i8* %base, i64 1
31  %sel = select i1 %x, i8* %baseplusone, i8* %base
32  store i8 0, i8* %sel
33
34  %bigbase1 = bitcast i8* %base to i16*
35  store i16 -1, i16* %bigbase1
36
37  %loaded = load i8* %sel
38  ret i8 %loaded
39}
40