1 ; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info |& FileCheck %s
3 target 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"
5 ; BasicAA's guard against use-def cycles shouldn't prevent it from
6 ; analyzing use-def dags.
8 ; CHECK: MustAlias: i8* %base, i8* %phi
9 ; CHECK: MustAlias: i8* %phi, i8* %wwa
10 ; CHECK: MustAlias: i8* %phi, i8* %wwb
11 ; CHECK: MustAlias: i16* %bigbase, i8* %phi
12 define i8 @foo(i8* %base, i1 %x, i1 %w) {
14 br i1 %w, label %wa, label %wb
16 %wwa = bitcast i8* %base to i8*
19 %wwb = bitcast i8* %base to i8*
22 %first = phi i8* [ %wwa, %wa ], [ %wwb, %wb ]
23 %fc = bitcast i8* %first to i8*
24 br i1 %x, label %xa, label %xb
26 %xxa = bitcast i8* %fc to i8*
29 %xxb = bitcast i8* %fc to i8*
32 %phi = phi i8* [ %xxa, %xa ], [ %xxb, %xb ]
36 %bigbase = bitcast i8* %base to i16*
37 store i16 -1, i16* %bigbase
39 %loaded = load i8* %phi