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| author | Andrew Trick <atrick@apple.com> | 2012-03-26 21:45:37 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2012-03-26 21:45:37 +0000 |
| commit | 11641d308a560f5bdcd17e13c808e1abf66f5404 (patch) | |
| tree | 848dc84c563152c2120bf8fc6148365db847c970 /test | |
| parent | 082120053fdccb7eb21681c09365175f130df210 (diff) | |
| download | llvm-11641d308a560f5bdcd17e13c808e1abf66f5404.tar.gz llvm-11641d308a560f5bdcd17e13c808e1abf66f5404.tar.bz2 llvm-11641d308a560f5bdcd17e13c808e1abf66f5404.tar.xz | |
Unit test for PR11950: LSR crash.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153472 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/2012-03-26-constexpr.ll | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/2012-03-26-constexpr.ll b/test/Transforms/LoopStrengthReduce/2012-03-26-constexpr.ll new file mode 100644 index 0000000000..c9b11a9fee --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/2012-03-26-constexpr.ll @@ -0,0 +1,49 @@ +; RUN: opt < %s -loop-reduce -S +; PR11950: isHighCostExpansion crashes on ConstExpr +; +; The crash happened during IVChain analysis (CollectChains). We don't +; really care how LSR decides to transform this loop, so we don't +; check it. As long as the analysis doesn't crash we're ok. +target datalayout = "e-p:64:64:64-n32:64" + +%struct.this_structure_s.0.5 = type { [6144 x [8 x i32]], [6144 x [8 x i32]], [6147 x [4 x i32]], [8 x i32], [2 x i8*], [2 x i8*], [6144 x i8], [6144 x i32], [6144 x i32], [4 x [4 x i8]] } + +define internal fastcc void @someFunction(%struct.this_structure_s.0.5* nocapture %scratch, i32 %stage, i32 %cbSize) nounwind { +entry: + %0 = getelementptr inbounds %struct.this_structure_s.0.5* %scratch, i32 0, i32 4, i32 %stage + %1 = load i8** %0, align 4 + %2 = getelementptr inbounds %struct.this_structure_s.0.5* %scratch, i32 0, i32 5, i32 %stage + %3 = load i8** %2, align 4 + %4 = getelementptr inbounds %struct.this_structure_s.0.5* %scratch, i32 0, i32 2, i32 0, i32 0 + %tmp11 = shl i32 %stage, 1 + %tmp1325 = or i32 %tmp11, 1 + br label %__label_D_1608 + +__label_D_1608: ; preds = %__label_D_1608, %entry + %i.12 = phi i32 [ 0, %entry ], [ %10, %__label_D_1608 ] + %tmp = shl i32 %i.12, 2 + %lvar_g.13 = getelementptr i32* %4, i32 %tmp + %tmp626 = or i32 %tmp, 1 + %scevgep = getelementptr i32* %4, i32 %tmp626 + %tmp727 = or i32 %tmp, 2 + %scevgep8 = getelementptr i32* %4, i32 %tmp727 + %tmp928 = or i32 %tmp, 3 + %scevgep10 = getelementptr i32* %4, i32 %tmp928 + %scevgep12 = getelementptr %struct.this_structure_s.0.5* %scratch, i32 0, i32 9, i32 %tmp11, i32 %i.12 + %scevgep14 = getelementptr %struct.this_structure_s.0.5* %scratch, i32 0, i32 9, i32 %tmp1325, i32 %i.12 + %5 = load i8* %scevgep12, align 1 + %6 = sext i8 %5 to i32 + %7 = load i8* %scevgep14, align 1 + %8 = sext i8 %7 to i32 + store i32 0, i32* %lvar_g.13, align 4 + store i32 %8, i32* %scevgep, align 4 + store i32 %6, i32* %scevgep8, align 4 + %9 = add nsw i32 %8, %6 + store i32 %9, i32* %scevgep10, align 4 + %10 = add nsw i32 %i.12, 1 + %exitcond = icmp eq i32 %10, 3 + br i1 %exitcond, label %return, label %__label_D_1608 + +return: ; preds = %__label_D_1608 + ret void +} |