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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-08-13 12:10:09 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-08-13 12:10:09 +0000 |
| commit | ee82a79041a43dfa3e8249cc66c1dd0c9918c202 (patch) | |
| tree | 4581dcf310924154b5972538a915e28b4c63bee4 /llvm/lib/CodeGen/CodeGenPrepare.cpp | |
| parent | b44789759b7093728849d0f4c9ae8857deea35b1 (diff) | |
| download | llvm-ee82a79041a43dfa3e8249cc66c1dd0c9918c202.zip llvm-ee82a79041a43dfa3e8249cc66c1dd0c9918c202.tar.gz llvm-ee82a79041a43dfa3e8249cc66c1dd0c9918c202.tar.bz2 | |
[CGP] Fix GEP issue with out of range APInt constant values not fitting in int64_t
Test case reduced from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7173
llvm-svn: 339556
Diffstat (limited to 'llvm/lib/CodeGen/CodeGenPrepare.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/CodeGenPrepare.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp index 725b69d..2dbf263 100644 --- a/llvm/lib/CodeGen/CodeGenPrepare.cpp +++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp @@ -3801,8 +3801,13 @@ bool AddressingModeMatcher::matchOperationAddr(User *AddrInst, unsigned Opcode, } else { uint64_t TypeSize = DL.getTypeAllocSize(GTI.getIndexedType()); if (ConstantInt *CI = dyn_cast<ConstantInt>(AddrInst->getOperand(i))) { - ConstantOffset += CI->getSExtValue() * TypeSize; - } else if (TypeSize) { // Scales of zero don't do anything. + const APInt &CVal = CI->getValue(); + if (CVal.getMinSignedBits() <= 64) { + ConstantOffset += CVal.getSExtValue() * TypeSize; + continue; + } + } + if (TypeSize) { // Scales of zero don't do anything. // We only allow one variable index at the moment. if (VariableOperand != -1) return false; |