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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2012-08-24 23:29:28 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2012-08-24 23:29:28 +0000 |
| commit | 1144af3c9b4da48cd581156e05b24261c8de366a (patch) | |
| tree | 49da576a97bfdab702528643450798baa54c790f /lib/Target/Mips | |
| parent | cac59d8ae815596f4f6b77d1a5414c0591168ea5 (diff) | |
| download | external_llvm-1144af3c9b4da48cd581156e05b24261c8de366a.zip external_llvm-1144af3c9b4da48cd581156e05b24261c8de366a.tar.gz external_llvm-1144af3c9b4da48cd581156e05b24261c8de366a.tar.bz2 | |
Fix integer undefined behavior due to signed left shift overflow in LLVM.
Reviewed offline by chandlerc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162623 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Mips')
| -rw-r--r-- | lib/Target/Mips/MipsAnalyzeImmediate.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/Mips/MipsAnalyzeImmediate.cpp b/lib/Target/Mips/MipsAnalyzeImmediate.cpp index dc8fbd0..99b163e 100644 --- a/lib/Target/Mips/MipsAnalyzeImmediate.cpp +++ b/lib/Target/Mips/MipsAnalyzeImmediate.cpp @@ -91,7 +91,7 @@ void MipsAnalyzeImmediate::ReplaceADDiuSLLWithLUi(InstSeq &Seq) { // Sign-extend and shift operand of ADDiu and see if it still fits in 16-bit. int64_t Imm = SignExtend64<16>(Seq[0].ImmOpnd); - int64_t ShiftedImm = Imm << (Seq[1].ImmOpnd - 16); + int64_t ShiftedImm = (uint64_t)Imm << (Seq[1].ImmOpnd - 16); if (!isInt<16>(ShiftedImm)) return; |