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[BOLT][NFC] Move out handlePCRelOperand

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Move the large lambda out of BinaryFunction::disassemble, reducing its size from
377 to 338 LoC.

Reviewed By: rafauler

Differential Revision: https://reviews.llvm.org/D132099
This commit is contained in:
Amir Ayupov 2022-08-23 16:07:46 -07:00
parent eca29d4a37
commit 6cd475f8ca
2 changed files with 42 additions and 39 deletions
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2
bolt/include/bolt/Core/BinaryFunction.h
View File

@ -2044,6 +2044,8 @@ public:
/// Returns false if disassembly failed.
bool disassemble();
void handlePCRelOperand(MCInst &Instruction, uint64_t Address, uint64_t Size);
/// Scan function for references to other functions. In relocation mode,
/// add relocations for external references.
///

79
bolt/lib/Core/BinaryFunction.cpp
View File

@ -1007,6 +1007,46 @@ bool BinaryFunction::isZeroPaddingAt(uint64_t Offset) const {
return true;
}
void BinaryFunction::handlePCRelOperand(MCInst &Instruction, uint64_t Address,
uint64_t Size) {
auto &MIB = BC.MIB;
uint64_t TargetAddress = 0;
if (!MIB->evaluateMemOperandTarget(Instruction, TargetAddress, Address,
Size)) {
errs() << "BOLT-ERROR: PC-relative operand can't be evaluated:\n";
BC.InstPrinter->printInst(&Instruction, 0, "", *BC.STI, errs());
errs() << '\n';
Instruction.dump_pretty(errs(), BC.InstPrinter.get());
errs() << '\n';
errs() << "BOLT-ERROR: cannot handle PC-relative operand at 0x"
<< Twine::utohexstr(Address) << ". Skipping function " << *this
<< ".\n";
if (BC.HasRelocations)
exit(1);
IsSimple = false;
return;
}
if (TargetAddress == 0 && opts::Verbosity >= 1) {
outs() << "BOLT-INFO: PC-relative operand is zero in function " << *this
<< '\n';
}
const MCSymbol *TargetSymbol;
uint64_t TargetOffset;
std::tie(TargetSymbol, TargetOffset) =
BC.handleAddressRef(TargetAddress, *this, /*IsPCRel*/ true);
const MCExpr *Expr =
MCSymbolRefExpr::create(TargetSymbol, MCSymbolRefExpr::VK_None, *BC.Ctx);
if (TargetOffset) {
const MCConstantExpr *Offset =
MCConstantExpr::create(TargetOffset, *BC.Ctx);
Expr = MCBinaryExpr::createAdd(Expr, Offset, *BC.Ctx);
}
MIB->replaceMemOperandDisp(Instruction,
MCOperand::createExpr(BC.MIB->getTargetExprFor(
Instruction, Expr, *BC.Ctx, 0)));
}
bool BinaryFunction::disassemble() {
NamedRegionTimer T("disassemble", "Disassemble function", "buildfuncs",
"Build Binary Functions", opts::TimeBuild);
@ -1025,45 +1065,6 @@ bool BinaryFunction::disassemble() {
// basic block.
Labels[0] = Ctx->createNamedTempSymbol("BB0");
auto handlePCRelOperand = [&](MCInst &Instruction, uint64_t Address,
uint64_t Size) {
uint64_t TargetAddress = 0;
if (!MIB->evaluateMemOperandTarget(Instruction, TargetAddress, Address,
Size)) {
errs() << "BOLT-ERROR: PC-relative operand can't be evaluated:\n";
BC.InstPrinter->printInst(&Instruction, 0, "", *BC.STI, errs());
errs() << '\n';
Instruction.dump_pretty(errs(), BC.InstPrinter.get());
errs() << '\n';
errs() << "BOLT-ERROR: cannot handle PC-relative operand at 0x"
<< Twine::utohexstr(Address) << ". Skipping function " << *this
<< ".\n";
if (BC.HasRelocations)
exit(1);
IsSimple = false;
return;
}
if (TargetAddress == 0 && opts::Verbosity >= 1) {
outs() << "BOLT-INFO: PC-relative operand is zero in function " << *this
<< '\n';
}
const MCSymbol *TargetSymbol;
uint64_t TargetOffset;
std::tie(TargetSymbol, TargetOffset) =
BC.handleAddressRef(TargetAddress, *this, /*IsPCRel*/ true);
const MCExpr *Expr = MCSymbolRefExpr::create(
TargetSymbol, MCSymbolRefExpr::VK_None, *BC.Ctx);
if (TargetOffset) {
const MCConstantExpr *Offset =
MCConstantExpr::create(TargetOffset, *BC.Ctx);
Expr = MCBinaryExpr::createAdd(Expr, Offset, *BC.Ctx);
}
MIB->replaceMemOperandDisp(Instruction,
MCOperand::createExpr(BC.MIB->getTargetExprFor(
Instruction, Expr, *BC.Ctx, 0)));
};
auto handleExternalReference = [&](MCInst &Instruction, uint64_t Size,
uint64_t Offset, uint64_t TargetAddress,
bool &IsCall) -> MCSymbol * {