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fix crash with case insensitive compare functions (str(n)casecmp())

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This commit is contained in:
hexcoder-
2019-07-14 23:32:35 +02:00
committed by Heiko Eißfeldt
parent 0d217e15d5
commit 2628f9f61b
1 changed files with 2 additions and 6 deletions
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8
llvm_mode/compare-transform-pass.so.cc
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@ -257,6 +257,7 @@ bool CompareTransform::transformCmps(Module &M, const bool processStrcmp, const
std::vector<Value *> args; std::vector<Value *> args;
args.push_back(load); args.push_back(load);
load = IRB.CreateCall(tolowerFn, args, "tmp"); load = IRB.CreateCall(tolowerFn, args, "tmp");
load = IRB.CreateTrunc(load, Int8Ty);
} }
Value *isub; Value *isub;
if (HasStr1) if (HasStr1)
@ -272,14 +273,9 @@ bool CompareTransform::transformCmps(Module &M, const bool processStrcmp, const
next_bb = BasicBlock::Create(C, "cmp_added", end_bb->getParent(), end_bb); next_bb = BasicBlock::Create(C, "cmp_added", end_bb->getParent(), end_bb);
BranchInst::Create(end_bb, next_bb); BranchInst::Create(end_bb, next_bb);
#if LLVM_VERSION_MAJOR < 8
TerminatorInst *term = cur_bb->getTerminator();
#else
Instruction *term = cur_bb->getTerminator();
#endif
Value *icmp = IRB.CreateICmpEQ(isub, ConstantInt::get(Int8Ty, 0)); Value *icmp = IRB.CreateICmpEQ(isub, ConstantInt::get(Int8Ty, 0));
IRB.CreateCondBr(icmp, next_bb, end_bb); IRB.CreateCondBr(icmp, next_bb, end_bb);
term->eraseFromParent(); cur_bb->getTerminator()->eraseFromParent();
} else { } else {
//IRB.CreateBr(end_bb); //IRB.CreateBr(end_bb);
} }