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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-10-31 09:20:38 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-10-31 09:20:38 +0000 |
| commit | 061938b90b1addc3c3269bdbfeae1029f0c05a43 (patch) | |
| tree | b91e5255365c70dd69bdee448b3f4c916d0a19c4 /test | |
| parent | 296815dccee4f5392855c829b8a9e4a661b83a42 (diff) | |
| download | llvm-061938b90b1addc3c3269bdbfeae1029f0c05a43.tar.gz llvm-061938b90b1addc3c3269bdbfeae1029f0c05a43.tar.bz2 llvm-061938b90b1addc3c3269bdbfeae1029f0c05a43.tar.xz | |
DependenceAnalysis: Don't crash if there is no constant operand.
This makes the code match the comments. Resolves a crash in loop idiom (PR14219).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167110 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/LoopIdiom/crash.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/Transforms/LoopIdiom/crash.ll b/test/Transforms/LoopIdiom/crash.ll new file mode 100644 index 0000000000..969adbcd76 --- /dev/null +++ b/test/Transforms/LoopIdiom/crash.ll @@ -0,0 +1,25 @@ +; RUN: opt -basicaa -loop-idiom -S < %s +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-S128" +target triple = "x86_64-apple-macosx10.8.0" + +; Don't crash inside DependenceAnalysis +; PR14219 +define void @test1(i64* %iwork, i64 %x) { +bb0: + %mul116 = mul nsw i64 %x, %x + %incdec.ptr6.sum175 = add i64 42, %x + %arrayidx135 = getelementptr inbounds i64* %iwork, i64 %incdec.ptr6.sum175 + br label %bb1 +bb1: + %storemerge4226 = phi i64 [ 0, %bb0 ], [ %inc139, %bb1 ] + store i64 1, i64* %arrayidx135, align 8 + %incdec.ptr6.sum176 = add i64 %mul116, %storemerge4226 + %arrayidx137 = getelementptr inbounds i64* %iwork, i64 %incdec.ptr6.sum176 + store i64 1, i64* %arrayidx137, align 8 + %inc139 = add nsw i64 %storemerge4226, 1 + %cmp131 = icmp sgt i64 %storemerge4226, 42 + br i1 %cmp131, label %bb2, label %bb1 +bb2: + ret void +} + |