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Revert "[ExecutionEngine] Avoid repeated hash lookups (NFC)" #133101

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Merged
merged 1 commit into from
Mar 26, 2025
Merged

Revert "[ExecutionEngine] Avoid repeated hash lookups (NFC)" #133101

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24 changes: 12 additions & 12 deletions llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1515,15 +1515,15 @@ void RuntimeDyldELF::resolveAArch64Branch(unsigned SectionID,
uint64_t Offset = RelI->getOffset();
unsigned RelType = RelI->getType();
// Look for an existing stub.
auto [It, Inserted] = Stubs.try_emplace(Value);
if (!Inserted) {
StubMap::const_iterator i = Stubs.find(Value);
if (i != Stubs.end()) {
resolveRelocation(Section, Offset,
Section.getLoadAddressWithOffset(It->second), RelType, 0);
Section.getLoadAddressWithOffset(i->second), RelType, 0);
LLVM_DEBUG(dbgs() << " Stub function found\n");
} else if (!resolveAArch64ShortBranch(SectionID, RelI, Value)) {
// Create a new stub function.
LLVM_DEBUG(dbgs() << " Create a new stub function\n");
It->second = Section.getStubOffset();
Stubs[Value] = Section.getStubOffset();
uint8_t *StubTargetAddr = createStubFunction(
Section.getAddressWithOffset(Section.getStubOffset()));

Expand Down Expand Up @@ -1837,15 +1837,15 @@ RuntimeDyldELF::processRelocationRef(
SectionEntry &Section = Sections[SectionID];

// Look up for existing stub.
auto [It, Inserted] = Stubs.try_emplace(Value);
if (!Inserted) {
RelocationEntry RE(SectionID, Offset, RelType, It->second);
StubMap::const_iterator i = Stubs.find(Value);
if (i != Stubs.end()) {
RelocationEntry RE(SectionID, Offset, RelType, i->second);
addRelocationForSection(RE, SectionID);
LLVM_DEBUG(dbgs() << " Stub function found\n");
} else {
// Create a new stub function.
LLVM_DEBUG(dbgs() << " Create a new stub function\n");
It->second = Section.getStubOffset();
Stubs[Value] = Section.getStubOffset();

unsigned AbiVariant = Obj.getPlatformFlags();

Expand Down Expand Up @@ -2075,10 +2075,10 @@ RuntimeDyldELF::processRelocationRef(
SectionEntry &Section = Sections[SectionID];

// Look for an existing stub.
auto [It, Inserted] = Stubs.try_emplace(Value);
StubMap::const_iterator i = Stubs.find(Value);
uintptr_t StubAddress;
if (!Inserted) {
StubAddress = uintptr_t(Section.getAddressWithOffset(It->second));
if (i != Stubs.end()) {
StubAddress = uintptr_t(Section.getAddressWithOffset(i->second));
LLVM_DEBUG(dbgs() << " Stub function found\n");
} else {
// Create a new stub function.
Expand All @@ -2089,7 +2089,7 @@ RuntimeDyldELF::processRelocationRef(
alignTo(BaseAddress + Section.getStubOffset(), getStubAlignment());
unsigned StubOffset = StubAddress - BaseAddress;

It->second = StubOffset;
Stubs[Value] = StubOffset;
createStubFunction((uint8_t *)StubAddress);
RelocationEntry RE(SectionID, StubOffset + 8, ELF::R_390_64,
Value.Offset);
Expand Down
8 changes: 4 additions & 4 deletions llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOARM.h
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Original file line number Diff line number Diff line change
Expand Up @@ -307,14 +307,14 @@ class RuntimeDyldMachOARM
// This is an ARM branch relocation, need to use a stub function.
// Look up for existing stub.
SectionEntry &Section = Sections[RE.SectionID];
auto [It, Inserted] = Stubs.try_emplace(Value);
RuntimeDyldMachO::StubMap::const_iterator i = Stubs.find(Value);
uint8_t *Addr;
if (!Inserted) {
Addr = Section.getAddressWithOffset(It->second);
if (i != Stubs.end()) {
Addr = Section.getAddressWithOffset(i->second);
} else {
// Create a new stub function.
assert(Section.getStubOffset() % 4 == 0 && "Misaligned stub");
It->second = Section.getStubOffset();
Stubs[Value] = Section.getStubOffset();
uint32_t StubOpcode = 0;
if (RE.RelType == MachO::ARM_RELOC_BR24)
StubOpcode = 0xe51ff004; // ldr pc, [pc, #-4]
Expand Down
8 changes: 4 additions & 4 deletions llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOX86_64.h
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Original file line number Diff line number Diff line change
Expand Up @@ -131,12 +131,12 @@ class RuntimeDyldMachOX86_64
assert(RE.IsPCRel);
assert(RE.Size == 2);
Value.Offset -= RE.Addend;
auto [It, Inserted] = Stubs.try_emplace(Value);
RuntimeDyldMachO::StubMap::const_iterator i = Stubs.find(Value);
uint8_t *Addr;
if (!Inserted) {
Addr = Section.getAddressWithOffset(It->second);
if (i != Stubs.end()) {
Addr = Section.getAddressWithOffset(i->second);
} else {
It->second = Section.getStubOffset();
Stubs[Value] = Section.getStubOffset();
uint8_t *GOTEntry = Section.getAddressWithOffset(Section.getStubOffset());
RelocationEntry GOTRE(RE.SectionID, Section.getStubOffset(),
MachO::X86_64_RELOC_UNSIGNED, Value.Offset, false,
Expand Down
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