1
; RUN: opt < %s -aa-eval -print-all-alias-modref-info -disable-output \
2
; RUN: |& grep {NoAlias: double\\* \[%\]a, double\\* \[%\]b\$} | count 4
4
; BasicAA should detect NoAliases in PHIs and Selects.
6
; Two PHIs in the same block.
7
define void @foo(i1 %m, double* noalias %x, double* noalias %y) {
9
br i1 %m, label %true, label %false
18
%a = phi double* [ %x, %true ], [ %y, %false ]
19
%b = phi double* [ %x, %false ], [ %y, %true ]
20
volatile store double 0.0, double* %a
21
volatile store double 1.0, double* %b
25
; Two selects with the same condition.
26
define void @bar(i1 %m, double* noalias %x, double* noalias %y) {
28
%a = select i1 %m, double* %x, double* %y
29
%b = select i1 %m, double* %y, double* %x
30
volatile store double 0.000000e+00, double* %a
31
volatile store double 1.000000e+00, double* %b
35
; Two PHIs with disjoint sets of inputs.
36
define void @qux(i1 %m, double* noalias %x, double* noalias %y,
37
i1 %n, double* noalias %v, double* noalias %w) {
39
br i1 %m, label %true, label %false
48
%a = phi double* [ %x, %true ], [ %y, %false ]
49
br i1 %n, label %ntrue, label %nfalse
58
%b = phi double* [ %v, %ntrue ], [ %w, %nfalse ]
59
volatile store double 0.0, double* %a
60
volatile store double 1.0, double* %b
64
; Two selects with disjoint sets of arms.
65
define void @fin(i1 %m, double* noalias %x, double* noalias %y,
66
i1 %n, double* noalias %v, double* noalias %w) {
68
%a = select i1 %m, double* %x, double* %y
69
%b = select i1 %n, double* %v, double* %w
70
volatile store double 0.000000e+00, double* %a
71
volatile store double 1.000000e+00, double* %b