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5311f9a49e
llvm-mirror/lib/Target/AVR
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Tom Stellard 5311f9a49e CMake: Make most target symbols hidden by default 
Summary:
For builds with LLVM_BUILD_LLVM_DYLIB=ON and BUILD_SHARED_LIBS=OFF
this change makes all symbols in the target specific libraries hidden
by default.

A new macro called LLVM_EXTERNAL_VISIBILITY has been added to mark symbols in these
libraries public, which is mainly needed for the definitions of the
LLVMInitialize* functions.

This patch reduces the number of public symbols in libLLVM.so by about
25%.  This should improve load times for the dynamic library and also
make abi checker tools, like abidiff require less memory when analyzing
libLLVM.so

One side-effect of this change is that for builds with
LLVM_BUILD_LLVM_DYLIB=ON and LLVM_LINK_LLVM_DYLIB=ON some unittests that
access symbols that are no longer public will need to be statically linked.

Before and after public symbol counts (using gcc 8.2.1, ld.bfd 2.31.1):
nm before/libLLVM-9svn.so | grep ' [A-Zuvw] ' | wc -l
36221
nm after/libLLVM-9svn.so | grep ' [A-Zuvw] ' | wc -l
26278

Reviewers: chandlerc, beanz, mgorny, rnk, hans

Reviewed By: rnk, hans

Subscribers: Jim, hiraditya, michaelplatings, chapuni, jholewinski, arsenm, dschuff, jyknight, dylanmckay, sdardis, nemanjai, jvesely, nhaehnle, javed.absar, sbc100, jgravelle-google, aheejin, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, jrtc27, zzheng, edward-jones, mgrang, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, kristina, jsji, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D54439

llvm-svn: 362990
2019-06-10 22:12:56 +00:00
..
AsmParser CMake: Make most target symbols hidden by default 2019-06-10 22:12:56 +00:00
Disassembler CMake: Make most target symbols hidden by default 2019-06-10 22:12:56 +00:00
MCTargetDesc CMake: Make most target symbols hidden by default 2019-06-10 22:12:56 +00:00
TargetInfo CMake: Make most target symbols hidden by default 2019-06-10 22:12:56 +00:00
AVR.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVR.td Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRAsmPrinter.cpp CMake: Make most target symbols hidden by default 2019-06-10 22:12:56 +00:00
AVRCallingConv.td Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRDevices.td
AVRExpandPseudoInsts.cpp [AVR] Fix codegen bug in 16-bit loads 2019-01-20 03:41:08 +00:00
AVRFrameLowering.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRFrameLowering.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRInstrFormats.td Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRInstrInfo.cpp Implementation of asm-goto support in LLVM 2019-02-08 20:48:56 +00:00
AVRInstrInfo.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRInstrInfo.td [AVR] Fix incorrect source regclass of LDWRdPtr 2019-06-03 02:31:07 +00:00
AVRISelDAGToDAG.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRISelLowering.cpp [AVR] Expand 16-bit rotations during the legalization stage 2019-06-07 06:55:00 +00:00
AVRISelLowering.h Add TargetLoweringInfo hook for explicitly setting the ABI calling convention endianess 2019-05-21 06:38:02 +00:00
AVRMachineFunctionInfo.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRMCInstLower.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRMCInstLower.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRRegisterInfo.cpp [AVR] Disable register coalescing to the PTRDISPREGS class 2019-06-01 12:38:56 +00:00
AVRRegisterInfo.h [AVR] Disable register coalescing to the PTRDISPREGS class 2019-06-01 12:38:56 +00:00
AVRRegisterInfo.td [AVR] Fix incorrect source regclass of LDWRdPtr 2019-06-03 02:31:07 +00:00
AVRRelaxMemOperations.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRSelectionDAGInfo.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRSubtarget.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRSubtarget.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRTargetMachine.cpp CMake: Make most target symbols hidden by default 2019-06-10 22:12:56 +00:00
AVRTargetMachine.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRTargetObjectFile.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AVRTargetObjectFile.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
CMakeLists.txt [AVR] Move InstPrinter files to MCTargetDesc. NFC 2019-05-11 01:03:03 +00:00
LLVMBuild.txt [AVR] Move InstPrinter files to MCTargetDesc. NFC 2019-05-11 01:03:03 +00:00
README.md
TODO.md

README.md

AVR backend

This experimental backend is for the 8-bit Atmel AVR microcontroller.

Useful links