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Reid Kleckner 443423e38a Move the section name from GlobalObject to the LLVMContext 
Summary:
Convention wisdom says that bytes in Function are precious, and the
vast, vast majority of globals do not live in special sections. Even
when they do, they tend to live in the same section. Store the section
name on the LLVMContext in a StringSet, and maintain a map from
GlobalObject* to section name like we do for metadata, prefix data, etc.

The fact that we've survived this long wasting at least three pointers
of space in Function suggests that Function bytes are perhaps not as
precious as we once thought. Given that most functions have metadata
attachments when debug info is enabled, we might consider adding a
pointer here to make that access more efficient.

Reviewers: jlebar, dexonsmith, mehdi_amini

Subscribers: mehdi_amini, aprantl, llvm-commits

Differential Revision: https://reviews.llvm.org/D28150

llvm-svn: 291613
 		2017-01-10 23:23:58 +00:00
..
AsmWriter.cpp [DebugInfo] Added support for Checksum debug info feature. 2016-12-25 10:12:09 +00:00
AttributeImpl.h [ADT, IR] Fix some Clang-tidy modernize-use-equals-delete and Include What You Use warnings; other minor fixes (NFC). 2016-12-07 22:06:02 +00:00
AttributeSetNode.h [ADT, IR] Fix some Clang-tidy modernize-use-equals-delete and Include What You Use warnings; other minor fixes (NFC). 2016-12-07 22:06:02 +00:00
Attributes.cpp Kill deprecated attribute API 2016-11-06 07:48:46 +00:00
AttributesCompatFunc.td Provide a way to specify inliner's attribute compatibility and merging. 2015-12-22 23:57:37 +00:00
AutoUpgrade.cpp [ARM] Remove rbit intrinsics and autoupgrade to generic bitreverse. 2017-01-10 19:23:51 +00:00
BasicBlock.cpp Don't create a SymbolTable in Function when the LLVMContext discards value names (NFC) 2016-09-17 06:00:02 +00:00
CMakeLists.txt [CMake] NFC. Updating CMake dependency specifications 2016-11-17 04:36:50 +00:00
Comdat.cpp [NFC] Remove some dead code: 2016-05-11 16:38:40 +00:00
ConstantFold.cpp Replace APFloatBase static fltSemantics data members with getter functions 2016-12-14 11:57:17 +00:00
ConstantFold.h IR: Introduce inrange attribute on getelementptr indices. 2016-11-10 22:34:55 +00:00
ConstantRange.cpp Factor out common parts of LVI and Float2Int into ConstantRange [NFCI] 2016-12-01 20:08:47 +00:00
Constants.cpp Replace APFloatBase static fltSemantics data members with getter functions 2016-12-14 11:57:17 +00:00
ConstantsContext.h [ADT, IR] Fix some Clang-tidy modernize-use-equals-delete and Include What You Use warnings; other minor fixes (NFC). 2016-12-07 22:06:02 +00:00
Core.cpp Replace APFloatBase static fltSemantics data members with getter functions 2016-12-14 11:57:17 +00:00
DIBuilder.cpp [DebugInfo] Added support for Checksum debug info feature. 2016-12-25 10:12:09 +00:00
DataLayout.cpp IR: Change the gep_type_iterator API to avoid always exposing the "current" type. 2016-12-02 02:24:42 +00:00
DebugInfo.cpp [IR] Remove the DIExpression field from DIGlobalVariable. 2016-12-20 02:09:43 +00:00
DebugInfoMetadata.cpp [DebugInfo] Added support for Checksum debug info feature. 2016-12-25 10:12:09 +00:00
DebugLoc.cpp [NFC] Header cleanup 2016-04-18 09:17:29 +00:00
DiagnosticInfo.cpp [GVN, OptDiag] Include the value that is forwarded in load elimination 2016-12-01 17:34:44 +00:00
DiagnosticPrinter.cpp
…
Dominators.cpp [PM] Change the static object whose address is used to uniquely identify 2016-11-23 17:53:26 +00:00
Function.cpp Speed up Function::isIntrinsic() by adding a bit to GlobalValue. NFC 2016-12-28 22:59:45 +00:00
GCOV.cpp Support: Remove MemoryObject and DataStreamer interfaces. 2016-11-02 00:08:37 +00:00
GVMaterializer.cpp
…
Globals.cpp Move the section name from GlobalObject to the LLVMContext 2017-01-10 23:23:58 +00:00
IRBuilder.cpp Add invariant start call creation in IRBuilder.NFC 2016-07-22 20:57:23 +00:00
IRPrintingPasses.cpp Consistently use ModuleAnalysisManager 2016-08-09 00:28:38 +00:00
InlineAsm.cpp Replace "fallthrough" comments with LLVM_FALLTHROUGH 2016-08-17 05:10:15 +00:00
Instruction.cpp fix documentation comments; NFC 2016-10-05 18:51:12 +00:00
Instructions.cpp fix comment formatting; NFC 2016-11-16 18:09:44 +00:00
IntrinsicInst.cpp [Profile] code refactoring: make getStep a method in base class 2016-09-20 19:07:22 +00:00
LLVMBuild.txt
…
LLVMContext.cpp IR, X86: Understand !absolute_symbol metadata on global variables. 2016-12-08 19:01:00 +00:00
LLVMContextImpl.cpp Use unique_ptr in LLVMContextImpl's constant maps. 2016-10-10 16:26:13 +00:00
LLVMContextImpl.h Move the section name from GlobalObject to the LLVMContext 2017-01-10 23:23:58 +00:00
LegacyPassManager.cpp Timer: Track name and description. 2016-11-18 19:43:18 +00:00
MDBuilder.cpp Use profile info to set function section prefix to group hot/cold functions. 2016-10-18 20:42:47 +00:00
Mangler.cpp Remove the default constructor and count variable from the Mangler since 2016-09-29 02:03:50 +00:00
Metadata.cpp [IR] Remove the DIExpression field from DIGlobalVariable. 2016-12-20 02:09:43 +00:00
MetadataImpl.h
…
Module.cpp Bitcode: Change the materializer interface to return llvm::Error. 2016-11-09 17:49:19 +00:00
ModuleSummaryIndex.cpp ThinLTO: handles modules with empty summaries 2016-10-08 04:44:18 +00:00
Operator.cpp IR: Change the gep_type_iterator API to avoid always exposing the "current" type. 2016-12-02 02:24:42 +00:00
OptBisect.cpp Removing unused function. 2016-04-22 22:24:20 +00:00
Pass.cpp Use StringRef in Pass Info/Support API (NFC) 2016-10-01 04:03:30 +00:00
PassManager.cpp [PM] Introduce the facilities for registering cross-IR-unit dependencies 2016-12-27 08:40:39 +00:00
PassRegistry.cpp Use the range variant of find instead of unpacking begin/end 2016-08-11 22:21:41 +00:00
ProfileSummary.cpp Reapply r271728 after adding move cobstructor for ProfileSummaryInfo 2016-06-03 22:54:26 +00:00
Statepoint.cpp Introduce an GCRelocateInst class [NFC] 2016-04-12 18:05:10 +00:00
SymbolTableListTraitsImpl.h ADT: Remove external uses of ilist_iterator, NFC 2016-09-03 01:22:56 +00:00
Type.cpp IR: Move NumElements field from {Array,Vector}Type to SequentialType. 2016-12-02 03:20:58 +00:00
TypeFinder.cpp Apply clang-tidy's modernize-loop-convert to most of lib/IR. 2016-06-26 14:10:56 +00:00
Use.cpp
…
User.cpp Retire llvm::alignOf in favor of C++11 alignof. 2016-10-20 15:02:18 +00:00
Value.cpp [BDCE] Skip metadata while replacing uses. 2016-12-07 21:47:32 +00:00
ValueSymbolTable.cpp Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes. 2016-08-23 17:14:32 +00:00
ValueTypes.cpp getVectorElementType().getSizeInBits() -> getScalarSizeInBits() ; NFCI 2016-09-14 16:37:15 +00:00
Verifier.cpp [TBAAVerifier] Be stricter around verifying scalar nodes 2016-12-29 15:47:05 +00:00