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Diffstat (limited to 'test/Analysis/CFLAliasAnalysis/constant-over-index.ll')
| -rw-r--r-- | test/Analysis/CFLAliasAnalysis/constant-over-index.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/Analysis/CFLAliasAnalysis/constant-over-index.ll b/test/Analysis/CFLAliasAnalysis/constant-over-index.ll new file mode 100644 index 0000000..fb44b95 --- /dev/null +++ b/test/Analysis/CFLAliasAnalysis/constant-over-index.ll @@ -0,0 +1,30 @@ +; RUN: opt < %s -cfl-aa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s + +; CFL AA currently returns PartialAlias, BasicAA returns MayAlias, both seem +; acceptable (although we might decide that we don't want PartialAlias, and if +; so, we should update this test case accordingly). +; CHECK: {{PartialAlias|MayAlias}}: double* %p.0.i.0, double* %p3 + +; %p3 is equal to %p.0.i.0 on the second iteration of the loop, +; so MayAlias is needed. + +define void @foo([3 x [3 x double]]* noalias %p) { +entry: + %p3 = getelementptr [3 x [3 x double]]* %p, i64 0, i64 0, i64 3 + br label %loop + +loop: + %i = phi i64 [ 0, %entry ], [ %i.next, %loop ] + + %p.0.i.0 = getelementptr [3 x [3 x double]]* %p, i64 0, i64 %i, i64 0 + + store volatile double 0.0, double* %p3 + store volatile double 0.1, double* %p.0.i.0 + + %i.next = add i64 %i, 1 + %cmp = icmp slt i64 %i.next, 3 + br i1 %cmp, label %loop, label %exit + +exit: + ret void +} |