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Argument evaluation order is not guaranteed. Split these out to force an order. 

llvm-svn: 110354
This commit is contained in:
John McCall 2010-08-05 18:11:10 +00:00
parent 16ba7c652e
commit 95bde46bbb
1 changed files with 7 additions and 6 deletions
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13
clang/lib/CodeGen/CGExprScalar.cpp
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@ -1576,12 +1576,13 @@ Value *ScalarExprEmitter::EmitOverflowCheckedBinOp(const BinOpInfo &Ops) {
llvm::PointerType::getUnqual(handlerTy));
handlerFunction = Builder.CreateLoad(handlerFunction);
llvm::Value *handlerResult = Builder.CreateCall4(handlerFunction,
Builder.CreateSExt(Ops.LHS, CGF.Int64Ty),
Builder.CreateSExt(Ops.RHS, CGF.Int64Ty),
llvm::ConstantInt::get(llvm::Type::getInt8Ty(VMContext), OpID),
llvm::ConstantInt::get(llvm::Type::getInt8Ty(VMContext),
cast<llvm::IntegerType>(opTy)->getBitWidth()));
llvm::Value *lhs = Builder.CreateSExt(Ops.LHS, CGF.Int64Ty);
llvm::Value *rhs = Builder.CreateSExt(Ops.RHS, CGF.Int64Ty);
llvm::Value *handlerResult =
Builder.CreateCall4(handlerFunction, lhs, rhs,
Builder.getInt8(OpID),
Builder.getInt8(cast<llvm::IntegerType>(opTy)->getBitWidth()));
handlerResult = Builder.CreateTrunc(handlerResult, opTy);