[LLVMdev] Emit a jump instruction to a place inside basicblock (original) (raw)
serge Guelton serge.guelton at enst-bretagne.fr
Thu Oct 30 00:46:58 PDT 2014
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On Wed, Oct 29, 2014 at 05:24:37PM -0400, Xiaoguang Wang wrote:
Hi all,
I'm a beginner in LLVM. Currently, I want to implement a pass that generates a jump table. The entry in that table is a jump to some place (may be an instruction) in a basic block. I'm reading the JumpTable code in llvm 3.5, there is a table which contains jump entries to functions. In AsmPrinter::doFinalization function from file lib/CodeGen/AsmPrinter/AsmPrinter.cpp, it gets a MCSymbolRefExpr from the function symbol. While my question is, is there a way to insert jump to place inside a basic block? Thanks!
ISTM you can split a basic bloc in two using ``llvm::SplitBlock'' then jump to the begining of the second part?
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