source: icGREP/icgrep-devel/llvm-3.8.0.src/test/Analysis/BasicAA/constant-over-index.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 885 bytes
Line 
1; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s
2; PR4267
3
4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
5
6; CHECK: PartialAlias: double* %p.0.i.0, double* %p3
7
8; %p3 is equal to %p.0.i.0 on the second iteration of the loop,
9; so MayAlias is needed.  In practice, basicaa returns PartialAlias
10; for GEPs to ignore TBAA.
11
12define void @foo([3 x [3 x double]]* noalias %p) {
13entry:
14  %p3 = getelementptr [3 x [3 x double]], [3 x [3 x double]]* %p, i64 0, i64 0, i64 3
15  br label %loop
16
17loop:
18  %i = phi i64 [ 0, %entry ], [ %i.next, %loop ]
19
20  %p.0.i.0 = getelementptr [3 x [3 x double]], [3 x [3 x double]]* %p, i64 0, i64 %i, i64 0
21
22  store volatile double 0.0, double* %p3
23  store volatile double 0.1, double* %p.0.i.0
24
25  %i.next = add i64 %i, 1
26  %cmp = icmp slt i64 %i.next, 3
27  br i1 %cmp, label %loop, label %exit
28
29exit:
30  ret void
31}
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