mirror of
https://github.com/darlinghq/darling-libobjc2.git
synced 2025-02-11 19:57:23 +00:00
Added LLVM optimisation passes for libobjc2.
This commit is contained in:
theraven
parent
fb26e9a9ef
commit
93251416eb
20
opts/COPYING
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20
opts/COPYING
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Copyright (c) 2009 David Chisnall
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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1
opts/Debug/.dir
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1
opts/Debug/.dir
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Sun 13 Sep 2009 13:29:32 UTC
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192
opts/Debug/IvarPass.d
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opts/Debug/IvarPass.d
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/usr/home/theraven/llvm/lib/Transforms/GNUObjC/Debug/IvarPass.o \
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/usr/home/theraven/llvm/lib/Transforms/GNUObjC/Debug/IvarPass.d \
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/usr/home/theraven/llvm/lib/Transforms/GNUObjC/Debug/IvarPass.o: \
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IvarPass.cpp /usr/home/theraven/llvm/include/llvm/Pass.h \
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h \
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/usr/home/theraven/llvm/include/llvm/PassSupport.h \
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/usr/home/theraven/llvm/include/llvm/PassAnalysisSupport.h \
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/usr/home/theraven/llvm/include/llvm/ADT/SmallVector.h \
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/usr/home/theraven/llvm/include/llvm/Support/type_traits.h \
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/usr/home/theraven/llvm/include/llvm/Function.h \
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/usr/home/theraven/llvm/include/llvm/GlobalValue.h \
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/usr/home/theraven/llvm/include/llvm/Constant.h \
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/usr/home/theraven/llvm/include/llvm/User.h \
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/usr/home/theraven/llvm/include/llvm/Value.h \
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/usr/home/theraven/llvm/include/llvm/AbstractTypeUser.h \
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/usr/home/theraven/llvm/include/llvm/Use.h \
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/usr/home/theraven/llvm/include/llvm/Support/Casting.h \
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/usr/home/theraven/llvm/include/llvm/ADT/PointerIntPair.h \
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/usr/home/theraven/llvm/include/llvm/Support/PointerLikeTypeTraits.h \
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h \
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/usr/home/theraven/llvm/include/llvm/ADT/StringRef.h \
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/usr/home/theraven/llvm/include/llvm/ADT/Twine.h \
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/usr/home/theraven/llvm/include/llvm/ADT/StringRef.h \
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h \
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/usr/home/theraven/llvm/include/llvm/CallingConv.h \
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/usr/home/theraven/llvm/include/llvm/BasicBlock.h \
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/usr/home/theraven/llvm/include/llvm/ADT/ilist_node.h \
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/usr/home/theraven/llvm/include/llvm/Instruction.def \
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/usr/home/theraven/llvm/include/llvm/SymbolTableListTraits.h \
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/usr/home/theraven/llvm/include/llvm/ADT/ilist.h \
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/usr/home/theraven/llvm/include/llvm/Support/MathExtras.h \
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/usr/home/theraven/llvm/include/llvm/LLVMContext.h \
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h \
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/usr/home/theraven/llvm/include/llvm/ADT/GraphTraits.h \
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/usr/home/theraven/llvm/include/llvm/ADT/FoldingSet.h \
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/usr/home/theraven/llvm/include/llvm/ADT/SmallVector.h \
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/usr/home/theraven/llvm/include/llvm/ADT/DenseMapInfo.h \
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/usr/home/theraven/llvm/include/llvm/ADT/PointerIntPair.h \
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/usr/home/theraven/llvm/include/llvm/InstrTypes.h \
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/usr/home/theraven/llvm/include/llvm/Constants.h \
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/usr/home/theraven/llvm/include/llvm/ADT/APInt.h \
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/usr/home/theraven/llvm/include/llvm/Support/MathExtras.h \
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/usr/home/theraven/llvm/include/llvm/ADT/APFloat.h \
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/usr/home/theraven/llvm/include/llvm/ADT/APInt.h \
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/usr/home/theraven/llvm/include/llvm/DerivedTypes.h \
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/usr/home/theraven/llvm/include/llvm/GlobalVariable.h \
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/usr/home/theraven/llvm/include/llvm/Constants.h
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/usr/home/theraven/llvm/include/llvm/Pass.h:
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h:
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/usr/home/theraven/llvm/include/llvm/PassSupport.h:
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/usr/home/theraven/llvm/include/llvm/PassAnalysisSupport.h:
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/usr/home/theraven/llvm/include/llvm/ADT/SmallVector.h:
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/usr/home/theraven/llvm/include/llvm/Support/type_traits.h:
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/usr/home/theraven/llvm/include/llvm/Function.h:
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/usr/home/theraven/llvm/include/llvm/GlobalValue.h:
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/usr/home/theraven/llvm/include/llvm/Value.h:
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/usr/home/theraven/llvm/include/llvm/AbstractTypeUser.h:
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/usr/home/theraven/llvm/include/llvm/Use.h:
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/usr/home/theraven/llvm/include/llvm/Support/Casting.h:
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/usr/home/theraven/llvm/include/llvm/ADT/PointerIntPair.h:
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/usr/home/theraven/llvm/include/llvm/Support/PointerLikeTypeTraits.h:
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h:
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/usr/home/theraven/llvm/include/llvm/ADT/StringRef.h:
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/usr/home/theraven/llvm/include/llvm/ADT/Twine.h:
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/usr/home/theraven/llvm/include/llvm/ADT/StringRef.h:
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h:
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/usr/home/theraven/llvm/include/llvm/CallingConv.h:
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/usr/home/theraven/llvm/include/llvm/BasicBlock.h:
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/usr/home/theraven/llvm/include/llvm/Instruction.h:
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/usr/home/theraven/llvm/include/llvm/ADT/ilist_node.h:
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/usr/home/theraven/llvm/include/llvm/Instruction.def:
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/usr/home/theraven/llvm/include/llvm/SymbolTableListTraits.h:
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/usr/home/theraven/llvm/include/llvm/ADT/ilist.h:
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/usr/home/theraven/llvm/include/llvm/Argument.h:
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/usr/home/theraven/llvm/include/llvm/Attributes.h:
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/usr/home/theraven/llvm/include/llvm/Support/MathExtras.h:
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/usr/home/theraven/llvm/include/llvm/Module.h:
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/usr/home/theraven/llvm/include/llvm/Function.h:
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/usr/home/theraven/llvm/include/llvm/GlobalVariable.h:
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/usr/home/theraven/llvm/include/llvm/OperandTraits.h:
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/usr/home/theraven/llvm/include/llvm/GlobalAlias.h:
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/usr/home/theraven/llvm/include/llvm/Metadata.h:
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/usr/home/theraven/llvm/include/llvm/Type.h:
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/usr/home/theraven/llvm/include/llvm/LLVMContext.h:
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/usr/home/theraven/llvm/include/llvm/System/Atomic.h:
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h:
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/usr/home/theraven/llvm/include/llvm/ADT/GraphTraits.h:
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/usr/home/theraven/llvm/include/llvm/ADT/FoldingSet.h:
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/usr/home/theraven/llvm/include/llvm/ADT/SmallVector.h:
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/usr/home/theraven/llvm/include/llvm/ADT/SmallPtrSet.h:
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/usr/home/theraven/llvm/include/llvm/Support/ErrorHandling.h:
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/usr/home/theraven/llvm/include/llvm/Support/Compiler.h:
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/usr/home/theraven/llvm/include/llvm/Support/ValueHandle.h:
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/usr/home/theraven/llvm/include/llvm/ADT/DenseMapInfo.h:
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/usr/home/theraven/llvm/include/llvm/ADT/PointerIntPair.h:
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/usr/home/theraven/llvm/include/llvm/Value.h:
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/usr/home/theraven/llvm/include/llvm/Instructions.h:
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/usr/home/theraven/llvm/include/llvm/InstrTypes.h:
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/usr/home/theraven/llvm/include/llvm/Operator.h:
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/usr/home/theraven/llvm/include/llvm/Constants.h:
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/usr/home/theraven/llvm/include/llvm/ADT/APInt.h:
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/usr/home/theraven/llvm/include/llvm/Support/MathExtras.h:
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/usr/home/theraven/llvm/include/llvm/ADT/APFloat.h:
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/usr/home/theraven/llvm/include/llvm/ADT/APInt.h:
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/usr/home/theraven/llvm/include/llvm/DerivedTypes.h:
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/usr/home/theraven/llvm/include/llvm/GlobalAlias.h:
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/usr/home/theraven/llvm/include/llvm/GlobalVariable.h:
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/usr/home/theraven/llvm/include/llvm/Constants.h:
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/usr/home/theraven/llvm/lib/Transforms/GNUObjC/Debug/TypeFeedback.o \
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/usr/home/theraven/llvm/lib/Transforms/GNUObjC/Debug/TypeFeedback.d \
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/usr/home/theraven/llvm/lib/Transforms/GNUObjC/Debug/TypeFeedback.o: \
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TypeFeedback.cpp /usr/home/theraven/llvm/include/llvm/Constants.h \
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/usr/home/theraven/llvm/include/llvm/Constant.h \
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/usr/home/theraven/llvm/include/llvm/User.h \
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/usr/home/theraven/llvm/include/llvm/Value.h \
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/usr/home/theraven/llvm/include/llvm/AbstractTypeUser.h \
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/usr/home/theraven/llvm/include/llvm/Use.h \
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/usr/home/theraven/llvm/include/llvm/Support/Casting.h \
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/usr/home/theraven/llvm/include/llvm/ADT/PointerIntPair.h \
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/usr/home/theraven/llvm/include/llvm/Support/PointerLikeTypeTraits.h \
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h \
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/usr/home/theraven/llvm/include/llvm/ADT/StringRef.h \
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/usr/home/theraven/llvm/include/llvm/ADT/Twine.h \
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/usr/home/theraven/llvm/include/llvm/ADT/StringRef.h \
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h \
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/usr/home/theraven/llvm/include/llvm/Type.h \
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/usr/home/theraven/llvm/include/llvm/LLVMContext.h \
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h \
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/usr/home/theraven/llvm/include/llvm/System/Atomic.h \
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h \
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/usr/home/theraven/llvm/include/llvm/ADT/GraphTraits.h \
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/usr/home/theraven/llvm/include/llvm/OperandTraits.h \
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/usr/home/theraven/llvm/include/llvm/ADT/APInt.h \
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/usr/home/theraven/llvm/include/llvm/Support/MathExtras.h \
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/usr/home/theraven/llvm/include/llvm/ADT/APFloat.h \
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/usr/home/theraven/llvm/include/llvm/ADT/APInt.h \
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/usr/home/theraven/llvm/include/llvm/ADT/SmallVector.h \
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/usr/home/theraven/llvm/include/llvm/Support/type_traits.h \
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/usr/home/theraven/llvm/include/llvm/Pass.h \
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/usr/home/theraven/llvm/include/llvm/PassSupport.h \
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/usr/home/theraven/llvm/include/llvm/PassAnalysisSupport.h \
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/usr/home/theraven/llvm/include/llvm/Module.h \
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/usr/home/theraven/llvm/include/llvm/Function.h \
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/usr/home/theraven/llvm/include/llvm/GlobalValue.h \
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/usr/home/theraven/llvm/include/llvm/CallingConv.h \
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/usr/home/theraven/llvm/include/llvm/BasicBlock.h \
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/usr/home/theraven/llvm/include/llvm/Instruction.h \
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/usr/home/theraven/llvm/include/llvm/ADT/ilist_node.h \
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/usr/home/theraven/llvm/include/llvm/Instruction.def \
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/usr/home/theraven/llvm/include/llvm/SymbolTableListTraits.h \
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/usr/home/theraven/llvm/include/llvm/ADT/ilist.h \
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/usr/home/theraven/llvm/include/llvm/Argument.h \
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/usr/home/theraven/llvm/include/llvm/Metadata.h \
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/usr/home/theraven/llvm/include/llvm/ADT/FoldingSet.h \
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/usr/home/theraven/llvm/include/llvm/ADT/SmallVector.h \
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/usr/home/theraven/llvm/include/llvm/ADT/SmallPtrSet.h \
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/usr/home/theraven/llvm/include/llvm/Support/ErrorHandling.h \
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/usr/home/theraven/llvm/include/llvm/Support/Compiler.h \
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/usr/home/theraven/llvm/include/llvm/Support/ValueHandle.h \
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/usr/home/theraven/llvm/include/llvm/ADT/DenseMapInfo.h \
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/usr/home/theraven/llvm/include/llvm/ADT/PointerIntPair.h \
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/usr/home/theraven/llvm/include/llvm/Value.h \
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/usr/home/theraven/llvm/include/llvm/Function.h \
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/usr/home/theraven/llvm/include/llvm/Instructions.h \
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/usr/home/theraven/llvm/include/llvm/InstrTypes.h \
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/usr/home/theraven/llvm/include/llvm/Operator.h \
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/usr/home/theraven/llvm/include/llvm/Constants.h \
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/usr/home/theraven/llvm/include/llvm/DerivedTypes.h
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/usr/home/theraven/llvm/include/llvm/Value.h:
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/usr/home/theraven/llvm/include/llvm/AbstractTypeUser.h:
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/usr/home/theraven/llvm/include/llvm/Use.h:
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/usr/home/theraven/llvm/include/llvm/Support/Casting.h:
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/usr/home/theraven/llvm/include/llvm/ADT/PointerIntPair.h:
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/usr/home/theraven/llvm/include/llvm/ADT/StringRef.h:
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/usr/home/theraven/llvm/include/llvm/ADT/Twine.h:
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h:
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/usr/home/theraven/llvm/include/llvm/Type.h:
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/usr/home/theraven/llvm/include/llvm/LLVMContext.h:
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h:
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/usr/home/theraven/llvm/include/llvm/System/Atomic.h:
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/usr/home/theraven/llvm/include/llvm/Support/DataTypes.h:
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/usr/home/theraven/llvm/include/llvm/ADT/GraphTraits.h:
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/usr/home/theraven/llvm/include/llvm/OperandTraits.h:
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/usr/home/theraven/llvm/include/llvm/ADT/APInt.h:
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/usr/home/theraven/llvm/include/llvm/Support/MathExtras.h:
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/usr/home/theraven/llvm/include/llvm/ADT/APFloat.h:
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/usr/home/theraven/llvm/include/llvm/ADT/APInt.h:
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/usr/home/theraven/llvm/include/llvm/ADT/SmallVector.h:
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/usr/home/theraven/llvm/include/llvm/Support/type_traits.h:
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/usr/home/theraven/llvm/include/llvm/Pass.h:
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/usr/home/theraven/llvm/include/llvm/PassSupport.h:
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/usr/home/theraven/llvm/include/llvm/PassAnalysisSupport.h:
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|
||||
/usr/home/theraven/llvm/include/llvm/Module.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Function.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/GlobalValue.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/CallingConv.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/BasicBlock.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Instruction.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/ADT/ilist_node.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Instruction.def:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/SymbolTableListTraits.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/ADT/ilist.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Argument.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Attributes.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Support/MathExtras.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/GlobalVariable.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/GlobalAlias.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Metadata.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/ADT/FoldingSet.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/ADT/SmallVector.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/ADT/SmallPtrSet.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Support/ErrorHandling.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Support/Compiler.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Support/ValueHandle.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/ADT/DenseMapInfo.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/ADT/PointerIntPair.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Value.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Function.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Instructions.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/InstrTypes.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Operator.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/Constants.h:
|
||||
|
||||
/usr/home/theraven/llvm/include/llvm/DerivedTypes.h:
|
||||
127
opts/IvarPass.cpp
Normal file
127
opts/IvarPass.cpp
Normal file
@ -0,0 +1,127 @@
|
||||
#include "llvm/Pass.h"
|
||||
#include "llvm/Function.h"
|
||||
#include "llvm/Module.h"
|
||||
#include "llvm/Instructions.h"
|
||||
#include "llvm/GlobalAlias.h"
|
||||
#include "llvm/GlobalVariable.h"
|
||||
#include "llvm/Constants.h"
|
||||
#include <string>
|
||||
|
||||
using namespace llvm;
|
||||
using std::string;
|
||||
|
||||
namespace
|
||||
{
|
||||
class GNUNonfragileIvarPass : public FunctionPass
|
||||
{
|
||||
|
||||
public:
|
||||
static char ID;
|
||||
GNUNonfragileIvarPass() : FunctionPass((intptr_t)&ID) {}
|
||||
|
||||
Module *M;
|
||||
size_t PointerSize;
|
||||
virtual bool doInitialization(Module &Mod) {
|
||||
M = &Mod;
|
||||
PointerSize = 8;
|
||||
if (M->getPointerSize() == Module::Pointer32)
|
||||
PointerSize = 4;
|
||||
return false;
|
||||
}
|
||||
|
||||
std::string getSuperName(Constant *ClsStruct) {
|
||||
GlobalVariable *name =
|
||||
cast<GlobalVariable>(ClsStruct->getOperand(1)->getOperand(0));
|
||||
return cast<ConstantArray>(name->getInitializer())->getAsString();
|
||||
}
|
||||
|
||||
size_t sizeOfClass(const std::string &className) {
|
||||
if (className.compare(0, 8, "NSObject") == 0 ||
|
||||
className.compare(0, 6, "Object") == 0) {
|
||||
return PointerSize;
|
||||
}
|
||||
GlobalVariable *Cls = M->getGlobalVariable("_OBJC_CLASS_" + className);
|
||||
if (!Cls) return 0;
|
||||
Constant *ClsStruct = Cls->getInitializer();
|
||||
// Size is initialized to be negative.
|
||||
ConstantInt *Size = cast<ConstantInt>(ClsStruct->getOperand(5));
|
||||
return sizeOfClass(getSuperName(ClsStruct)) - Size->getSExtValue();
|
||||
}
|
||||
|
||||
size_t hardCodedOffset(const StringRef &className,
|
||||
const StringRef &ivarName) {
|
||||
GlobalVariable *Cls = M->getGlobalVariable(("_OBJC_CLASS_" + className).str(), true);
|
||||
if (!Cls) return 0;
|
||||
Constant *ClsStruct = Cls->getInitializer();
|
||||
size_t superSize = sizeOfClass(getSuperName(ClsStruct));
|
||||
if (!superSize) return 0;
|
||||
ConstantStruct *IvarStruct = cast<ConstantStruct>(
|
||||
cast<GlobalVariable>(ClsStruct->getOperand(6))->getInitializer());
|
||||
int ivarCount = cast<ConstantInt>(IvarStruct->getOperand(0))->getSExtValue();
|
||||
Constant *ivars = IvarStruct->getOperand(1);
|
||||
for (int i=0 ; i<ivarCount ; i++) {
|
||||
Constant *ivar = ivars->getOperand(i);
|
||||
GlobalVariable *name =
|
||||
cast<GlobalVariable>(ivar->getOperand(0)->getOperand(0));
|
||||
std::string ivarNameStr =
|
||||
cast<ConstantArray>(name->getInitializer())->getAsString();
|
||||
if (ivarNameStr.compare(0, ivarName.size(), ivarName.str()) == 0)
|
||||
return superSize +
|
||||
cast<ConstantInt>(ivar->getOperand(2))->getSExtValue();
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
virtual bool runOnFunction(Function &F) {
|
||||
bool modified = false;
|
||||
//llvm::cerr << "IvarPass: " << F.getName() << "\n";
|
||||
for (Function::iterator i=F.begin(), end=F.end() ;
|
||||
i != end ; ++i) {
|
||||
for (BasicBlock::iterator b=i->begin(), last=i->end() ;
|
||||
b != last ; ++b) {
|
||||
if (LoadInst *indirectload = dyn_cast<LoadInst>(b)) {
|
||||
if (LoadInst *load = dyn_cast<LoadInst>(indirectload->getOperand(0))) {
|
||||
if (GlobalVariable *ivar =
|
||||
dyn_cast<GlobalVariable>(load->getOperand(0))) {
|
||||
StringRef variableName = ivar->getName();
|
||||
if (!variableName.startswith("__objc_ivar_offset_"))
|
||||
break;
|
||||
size_t prefixLength = strlen("__objc_ivar_offset_");
|
||||
|
||||
StringRef suffix = variableName.substr(prefixLength,
|
||||
variableName.size()-prefixLength);
|
||||
|
||||
std::pair<StringRef,StringRef> parts = suffix.split('.');
|
||||
StringRef className = parts.first;
|
||||
StringRef ivarName = parts.second;
|
||||
|
||||
// If the class, and all superclasses, are visible in this module
|
||||
// then we can hard-code the ivar offset
|
||||
if (size_t offset = hardCodedOffset(className, ivarName)) {
|
||||
indirectload->replaceAllUsesWith(ConstantInt::get(indirectload->getType(), offset));
|
||||
modified = true;
|
||||
} else {
|
||||
// If the class was compiled with the new
|
||||
if (Value *offset =
|
||||
M->getGlobalVariable(("__objc_ivar_offset_value_" + suffix).str())) {
|
||||
load->replaceAllUsesWith(offset);
|
||||
modified = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return modified;
|
||||
}
|
||||
};
|
||||
|
||||
char GNUNonfragileIvarPass::ID = 0;
|
||||
RegisterPass<GNUNonfragileIvarPass> X("gnu-nonfragile-ivar", "Ivar fragility pass");
|
||||
}
|
||||
|
||||
FunctionPass *createGNUNonfragileIvarPass(void)
|
||||
{
|
||||
return new GNUNonfragileIvarPass();
|
||||
}
|
||||
7
opts/Makefile
Normal file
7
opts/Makefile
Normal file
@ -0,0 +1,7 @@
|
||||
LEVEL = ../../../
|
||||
LIBRARYNAME = GNUObjCRuntime
|
||||
LOADABLE_MODULE = 1
|
||||
USEDLIBS =
|
||||
|
||||
include $(LEVEL)/Makefile.common
|
||||
|
||||
30
opts/README
Normal file
30
opts/README
Normal file
@ -0,0 +1,30 @@
|
||||
GNUstep Runtime Optimisations
|
||||
=============================
|
||||
|
||||
This directory contains LLVM optimisations specific to libobjc2. To build
|
||||
them, you must copy this directory to llvm/lib/Transforms/GNURuntime (where
|
||||
llvm is the root of your llvm checkout).
|
||||
|
||||
Running GNU make will then create GNUObjCRuntime.so. This library can be
|
||||
passed to opt to run optimisations on bitcode generated with clang or
|
||||
LanguageKit.
|
||||
|
||||
Non-Fragile Ivar Pass
|
||||
---------------------
|
||||
|
||||
Running `opt -gnu-nonfragile-ivar` will invoke the non-fragile instance
|
||||
variable lowering pass. This will turn non-fragile instance variable accesses,
|
||||
which go via one or two indirection layers, into more fragile ones. If a class
|
||||
and all of its superclasses are present in the module then this pass will turn
|
||||
indirect instance variable accesses into hard-coded ones.
|
||||
|
||||
For this pass to be most useful, it should be run as a link-time optimisation.
|
||||
|
||||
Type Feedback
|
||||
-------------
|
||||
|
||||
Running `opt -gnu-objc-type-feedback` enables type feedback. Objective-C
|
||||
message lookups will be replaced by calls to the profiling version in the
|
||||
runtime library. The generated data can then be used for future optimisations
|
||||
(speculative inlining, polymorphic inline caching, and so on), which have not
|
||||
yet been written.
|
||||
87
opts/TypeFeedback.cpp
Normal file
87
opts/TypeFeedback.cpp
Normal file
@ -0,0 +1,87 @@
|
||||
#include "llvm/Constants.h"
|
||||
#include "llvm/Pass.h"
|
||||
#include "llvm/Module.h"
|
||||
#include "llvm/Function.h"
|
||||
#include "llvm/Instructions.h"
|
||||
#include <vector>
|
||||
|
||||
using namespace llvm;
|
||||
|
||||
namespace {
|
||||
struct GNUObjCTypeFeedback : public ModulePass {
|
||||
|
||||
typedef std::pair<CallInst*,CallInst*> callPair;
|
||||
typedef std::vector<callPair > replacementVector;
|
||||
static char ID;
|
||||
uint32_t callsiteCount;
|
||||
const IntegerType *Int32Ty;
|
||||
GNUObjCTypeFeedback() : ModulePass(&ID), callsiteCount(0) {}
|
||||
|
||||
void profileFunction(Function &F, Constant *ModuleID)
|
||||
{
|
||||
for (Function::iterator i=F.begin(), e=F.end() ;
|
||||
i != e ; ++i)
|
||||
{
|
||||
replacementVector replacements;
|
||||
for (BasicBlock::iterator b=i->begin(), last=i->end() ;
|
||||
b != last ; ++b)
|
||||
{
|
||||
Module *M = F.getParent();
|
||||
if (CallInst *call = dyn_cast<CallInst>(b))
|
||||
{
|
||||
if (Function *callee = call->getCalledFunction())
|
||||
{
|
||||
if (callee->getName() == "objc_msg_lookup_sender")
|
||||
{
|
||||
llvm::Value *args[] = { call->getOperand(1),
|
||||
call->getOperand(2), call->getOperand(3),
|
||||
ModuleID, ConstantInt::get(Int32Ty,
|
||||
callsiteCount++) };
|
||||
Function *profile = cast<Function>(
|
||||
M->getOrInsertFunction("objc_msg_lookup_profile",
|
||||
callee->getFunctionType()->getReturnType(),
|
||||
args[0]->getType(), args[1]->getType(),
|
||||
args[2]->getType(),
|
||||
ModuleID->getType(), Int32Ty, NULL));
|
||||
llvm::CallInst *profileCall =
|
||||
CallInst::Create(profile, args, args+5, "", call);
|
||||
replacements.push_back(callPair(call, profileCall));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
for (replacementVector::iterator r=replacements.begin(),
|
||||
e=replacements.end() ; e!=r ; r++)
|
||||
{
|
||||
r->first->replaceAllUsesWith(r->second);
|
||||
r->second->getParent()->getInstList().erase(r->first);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public:
|
||||
virtual bool runOnModule(Module &M)
|
||||
{
|
||||
LLVMContext &VMContext = M.getContext();
|
||||
Int32Ty = IntegerType::get(VMContext, 32);
|
||||
Constant *moduleName =
|
||||
ConstantArray::get(VMContext, M.getModuleIdentifier(), true);
|
||||
moduleName = new GlobalVariable(M, moduleName->getType(), true,
|
||||
GlobalValue::InternalLinkage, moduleName,
|
||||
".objc_profile_module_name");
|
||||
|
||||
for (Module::iterator F=M.begin(), e=M.end() ;
|
||||
F != e ; ++F)
|
||||
{
|
||||
profileFunction(*F, moduleName);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
char GNUObjCTypeFeedback::ID = 0;
|
||||
RegisterPass<GNUObjCTypeFeedback> X("gnu-objc-type-feedback",
|
||||
"Objective-C type feedback for the GNU runtime.", false, true);
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user