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[BOLT][Instrumentation] Add support for MacOS counters

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This commit adds support for generation of getter counters for AArch64 MacOS.
Continuation of work D151899

Reviewed By: rafauleir, yota9

Differential Revision: https://reviews.llvm.org/D151901
This commit is contained in:
Elvina Yakubova 2023-08-08 16:49:28 +03:00
parent 6e4c230525
commit 70405a0bf7
1 changed files with 28 additions and 0 deletions
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28
bolt/lib/Target/AArch64/AArch64MCPlusBuilder.cpp
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@ -1352,6 +1352,34 @@ public:
return createInstrumentedIndCallHandlerExitBB();
}
InstructionListType createGetter(MCContext *Ctx, const char *name) const {
InstructionListType Insts(4);
MCSymbol *Locs = Ctx->getOrCreateSymbol(name);
InstructionListType Addr = materializeAddress(Locs, Ctx, AArch64::X0);
std::copy(Addr.begin(), Addr.end(), Insts.begin());
assert(Addr.size() == 2 && "Invalid Addr size");
loadReg(Insts[2], AArch64::X0, AArch64::X0);
createReturn(Insts[3]);
return Insts;
}
InstructionListType createNumCountersGetter(MCContext *Ctx) const override {
return createGetter(Ctx, "__bolt_num_counters");
}
InstructionListType
createInstrLocationsGetter(MCContext *Ctx) const override {
return createGetter(Ctx, "__bolt_instr_locations");
}
InstructionListType createInstrTablesGetter(MCContext *Ctx) const override {
return createGetter(Ctx, "__bolt_instr_tables");
}
InstructionListType createInstrNumFuncsGetter(MCContext *Ctx) const override {
return createGetter(Ctx, "__bolt_instr_num_funcs");
}
void convertIndirectCallToLoad(MCInst &Inst, MCPhysReg Reg) override {
bool IsTailCall = isTailCall(Inst);
if (IsTailCall)