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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-10-19 16:37:30 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-10-19 16:37:30 +0000 |
| commit | 239fd44f7a68aae4b2e8b6f1738ef9e8fd4ddc01 (patch) | |
| tree | f8f67d4ffc122a3bf495e0b6bda03fdb6d55a5da /test/Transforms/IndVarSimplify/2012-10-19-congruent-constant.ll | |
| parent | 34674fea970b20dde4336a06a12732211d1cfa04 (diff) | |
| download | external_llvm-239fd44f7a68aae4b2e8b6f1738ef9e8fd4ddc01.zip external_llvm-239fd44f7a68aae4b2e8b6f1738ef9e8fd4ddc01.tar.gz external_llvm-239fd44f7a68aae4b2e8b6f1738ef9e8fd4ddc01.tar.bz2 | |
SCEVExpander: Don't crash when trying to merge two constant phis.
Just constant fold them so they can't cause any trouble. Fixes PR12627.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166286 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/IndVarSimplify/2012-10-19-congruent-constant.ll')
| -rw-r--r-- | test/Transforms/IndVarSimplify/2012-10-19-congruent-constant.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/Transforms/IndVarSimplify/2012-10-19-congruent-constant.ll b/test/Transforms/IndVarSimplify/2012-10-19-congruent-constant.ll new file mode 100644 index 0000000..5c47866 --- /dev/null +++ b/test/Transforms/IndVarSimplify/2012-10-19-congruent-constant.ll @@ -0,0 +1,27 @@ +; RUN: opt -S -indvars < %s | FileCheck %s + +; PR12627 +define void @test1(i32 %x) nounwind uwtable ssp { +entry: + br label %for.body + +for.body: ; preds = %for.body, %entry + %phi1 = phi i1 [ false, %entry ], [ %cmpa, %for.body ] + %phi2 = phi i1 [ false, %entry ], [ %cmpb, %for.body ] + %i.07 = phi i32 [ 0, %entry ], [ %inc, %for.body ] + tail call void @aux(i1 %phi1, i1 %phi2) nounwind + %cmpa = icmp sgt i32 %i.07, 200 + %cmpb = icmp sgt i32 %i.07, 100 + %inc = add nsw i32 %i.07, 1 + %exitcond = icmp eq i32 %inc, 100 + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.body + ret void + +; CHECK: @test1 +; CHECK-NOT: phi i1 +; CHECK: call void @aux(i1 false, i1 false) +} + +declare void @aux(i1, i1) |