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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-08-13 16:50:20 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-08-13 16:50:20 +0000 |
| commit | 82edf8d3297ea234698466ed7b7febb447e74ed1 (patch) | |
| tree | 3477bb964cbc3b89e471cde25920ad65019f6753 /llvm/test/Transforms | |
| parent | 5e6bd2f8a9bf3ddef78212488bfda466fa1bfd4f (diff) | |
| download | bcm5719-llvm-82edf8d3297ea234698466ed7b7febb447e74ed1.tar.gz bcm5719-llvm-82edf8d3297ea234698466ed7b7febb447e74ed1.zip | |
[InstCombine] Limit simplifyAllocaArraySize constant folding to values that fit into a uint64_t
Fixes OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5223
llvm-svn: 339584
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/alloca-big.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/alloca-big.ll b/llvm/test/Transforms/InstCombine/alloca-big.ll new file mode 100644 index 00000000000..bff5fcfe4e7 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/alloca-big.ll @@ -0,0 +1,16 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -instcombine -S | FileCheck %s + +; OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5223 +define void @test_bigalloc() { +; CHECK-LABEL: @test_bigalloc( +; CHECK-NEXT: [[TMP1:%.*]] = alloca [18446744069414584320 x i8], align 1 +; CHECK-NEXT: [[DOTSUB:%.*]] = getelementptr inbounds [18446744069414584320 x i8], [18446744069414584320 x i8]* [[TMP1]], i64 0, i64 0 +; CHECK-NEXT: store i8* [[DOTSUB]], i8** undef, align 8 +; CHECK-NEXT: ret void +; + %1 = alloca i8, i864 -4294967296 + %2 = getelementptr i8, i8* %1, i1 undef + store i8* %2, i8** undef + ret void +} |
