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implement .ll and .bc support for nsw/nuw on shl and exact on lshr/ashr.

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Factor some code better.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125006 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2011-02-07 16:40:21 +00:00
parent 163a84bbce
commit f067d584a8
8 changed files with 239 additions and 211 deletions
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14
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -1085,13 +1085,16 @@ bool BitcodeReader::ParseConstants() {
if (Record.size() >= 4) {
if (Opc == Instruction::Add ||
Opc == Instruction::Sub ||
Opc == Instruction::Mul) {
Opc == Instruction::Mul ||
Opc == Instruction::Shl) {
if (Record[3] & (1 << bitc::OBO_NO_SIGNED_WRAP))
Flags |= OverflowingBinaryOperator::NoSignedWrap;
if (Record[3] & (1 << bitc::OBO_NO_UNSIGNED_WRAP))
Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
} else if (Opc == Instruction::SDiv ||
Opc == Instruction::UDiv) {
Opc == Instruction::UDiv ||
Opc == Instruction::LShr ||
Opc == Instruction::AShr) {
if (Record[3] & (1 << bitc::PEO_EXACT))
Flags |= SDivOperator::IsExact;
}
@ -1901,13 +1904,16 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
if (OpNum < Record.size()) {
if (Opc == Instruction::Add ||
Opc == Instruction::Sub ||
Opc == Instruction::Mul) {
Opc == Instruction::Mul ||
Opc == Instruction::Shl) {
if (Record[OpNum] & (1 << bitc::OBO_NO_SIGNED_WRAP))
cast<BinaryOperator>(I)->setHasNoSignedWrap(true);
if (Record[OpNum] & (1 << bitc::OBO_NO_UNSIGNED_WRAP))
cast<BinaryOperator>(I)->setHasNoUnsignedWrap(true);
} else if (Opc == Instruction::SDiv ||
Opc == Instruction::UDiv) {
Opc == Instruction::UDiv ||
Opc == Instruction::LShr ||
Opc == Instruction::AShr) {
if (Record[OpNum] & (1 << bitc::PEO_EXACT))
cast<BinaryOperator>(I)->setIsExact(true);
}