Teach EmitBlock to put the target block immediately after the current block
(if there's a current block). The chief advantage of doing this is that it lets us pick blocks (e.g. EH blocks) to push to the end of the function so that fallthrough happens consistently --- i.e. it gives us the flexibility of ordering blocks as we please without having to change the order in which we generate code. There are standard (?) optimization passes which can do some of that for us, but better to generate reasonable code to begin with. llvm-svn: 101997
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@ -225,7 +225,12 @@ void CodeGenFunction::EmitBlock(llvm::BasicBlock *BB, bool IsFinished) {
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}
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}
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CurFn->getBasicBlockList().push_back(BB);
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// Place the block after the current block, if possible, or else at
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// the end of the function.
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if (Builder.GetInsertBlock())
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CurFn->getBasicBlockList().insertAfter(Builder.GetInsertBlock(), BB);
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else
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CurFn->getBasicBlockList().push_back(BB);
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Builder.SetInsertPoint(BB);
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}
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