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2015 Jul 13
2
[LLVMdev] ARM Jump table pcrelative relaxation in clang / llc
Hi,
I have kept working on this and found the following (as llvm 3.5):
1) In the function MCObjectStreamer::EmitInstruction there is a check for
the instruction being relaxable or not:
if (!Assembler.getBackend().mayNeedRelaxation(Inst)) {
EmitInstToData(Inst, STI);
return;
}
At this stage, the instruction as been already selected to be ARM::ADR.
The call to mayNeed
2015-07-07 18:06