X-Git-Url: https://git.saurik.com/apple/ld64.git/blobdiff_plain/afe874b1634377ecb27057ee76deb04915bb34d7..b2fa67a80bc53211e4d1ea81f23e9f953ee1dd6c:/src/ld/Resolver.cpp

diff --git a/src/ld/Resolver.cpp b/src/ld/Resolver.cpp
index a56cefe..2502820 100644
--- a/src/ld/Resolver.cpp
+++ b/src/ld/Resolver.cpp
@@ -297,26 +297,6 @@ void Resolver::buildAtomList()
 	//_symbolTable.printStatistics();
 }
 
-unsigned int Resolver::ppcSubTypeIndex(uint32_t subtype)
-{
-	switch ( subtype ) {
-		case CPU_SUBTYPE_POWERPC_ALL:
-			return 0;
-		case CPU_SUBTYPE_POWERPC_750:
-			// G3
-			return 1;
-		case CPU_SUBTYPE_POWERPC_7400:
-		case CPU_SUBTYPE_POWERPC_7450:
-			// G4
-			return 2;
-		case CPU_SUBTYPE_POWERPC_970:
-			// G5 can run everything
-			return 3;
-		default:
-			throw "Unhandled PPC cpu subtype!";
-			break;
-	}
-}
 
 void Resolver::doFile(const ld::File& file)
 {
@@ -363,29 +343,6 @@ void Resolver::doFile(const ld::File& file)
 		// update cpu-sub-type
 		cpu_subtype_t nextObjectSubType = file.cpuSubType();
 		switch ( _options.architecture() ) {
-			case CPU_TYPE_POWERPC:
-				// no checking when -force_cpusubtype_ALL is used
-				if ( _options.forceCpuSubtypeAll() )
-					return;
-				if ( _options.preferSubArchitecture() ) {
-					// warn if some .o file is not compatible with desired output sub-type
-					if ( _options.subArchitecture() != nextObjectSubType ) {
-						if ( ppcSubTypeIndex(nextObjectSubType) > ppcSubTypeIndex(_options.subArchitecture()) ) {
-							if ( !_inputFiles.inferredArch() )
-								warning("cpu-sub-type of %s is not compatible with command line cpu-sub-type", file.path());
-							_internal.cpuSubType = nextObjectSubType;
-						}
-					}
-				}
-				else {
-					// command line to linker just had -arch ppc
-					// figure out final sub-type based on sub-type of all .o files
-					if ( ppcSubTypeIndex(nextObjectSubType) > ppcSubTypeIndex(_internal.cpuSubType) ) {
-						_internal.cpuSubType = nextObjectSubType;
-					}
-				}
-				break;
-			
 			case CPU_TYPE_ARM:
 				if ( _options.subArchitecture() != nextObjectSubType ) {
 					if ( (_options.subArchitecture() == CPU_SUBTYPE_ARM_ALL) && _options.forceCpuSubtypeAll() ) {
@@ -405,9 +362,6 @@ void Resolver::doFile(const ld::File& file)
 				}
 				break;
 			
-			case CPU_TYPE_POWERPC64:
-				break;
-				
 			case CPU_TYPE_I386:
 				_internal.cpuSubType = CPU_SUBTYPE_I386_ALL;
 				break;
@@ -567,8 +521,6 @@ bool Resolver::isDtraceProbe(ld::Fixup::Kind kind)
 		case ld::Fixup::kindStoreARMDtraceIsEnableSiteClear:
 		case ld::Fixup::kindStoreThumbDtraceCallSiteNop:
 		case ld::Fixup::kindStoreThumbDtraceIsEnableSiteClear:
-		case ld::Fixup::kindStorePPCDtraceCallSiteNop:
-		case ld::Fixup::kindStorePPCDtraceIsEnableSiteClear:
 		case ld::Fixup::kindDtraceExtra:
 			return true;
 		default: 
@@ -770,7 +722,6 @@ void Resolver::markLive(const ld::Atom& atom, WhyLiveBackChain* previous)
 			case ld::Fixup::kindStoreTargetAddressX86Abs32TLVLoadNowLEA:
 			case ld::Fixup::kindStoreTargetAddressARMBranch24:
 			case ld::Fixup::kindStoreTargetAddressThumbBranch22:
-			case ld::Fixup::kindStoreTargetAddressPPCBranch24:
 				if ( fit->binding == ld::Fixup::bindingByContentBound ) {
 					// normally this was done in convertReferencesToIndirect()
 					// but a archive loaded .o file may have a forward reference
@@ -1078,7 +1029,8 @@ void Resolver::checkUndefines(bool force)
 			break;
 	}
 	std::vector<const char*> unresolvableUndefines;
-	if ( _options.deadCodeStrip() ) 
+	// <rdar://problem/10052396> LTO many have eliminated need for some undefines
+	if ( _options.deadCodeStrip() || _haveLLVMObjs ) 
 		this->liveUndefines(unresolvableUndefines);
 	else	
 		_symbolTable.undefines(unresolvableUndefines);