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Fangrui Song f01fa40a00 [ELF][RISCV] Support PLT, GOT, copy and relative relocations 
* Handle initial relocation types: R_RISCV_CALL_PLT and R_RISCV_GOT_HI20.
* Produce dynamic relocation types: R_RISCV_COPY, R_RISCV_RELATIVE, R_RISCV_JUMP_SLOT.
* Define SymbolRel as R_RISCV_{32,64}
* Generate PLT header: it is used by lazy binding PLT in glibc.
* R_RISCV_CALL is changed from R_PC to R_PC_PLT. If the target symbol is preemptable, this will suppress an unnecessary "canonical PLT".
  This behavior is different from ld.bfd but it is agreed the current lld behavior is favored.
  I have received positive responses from the binutils maintainer that the ABI/binutils implementation can be improved, see:
  https://github.com/riscv/riscv-elf-psabi-doc/issues/98
  https://sourceware.org/bugzilla/show_bug.cgi?id=24685

Many -no-pie/-pie/-shared programs linked against musl or glibc should work with this patch.

Reviewed By: jrtc27

Differential Revision: https://reviews.llvm.org/D63076

llvm-svn: 364812
 		2019-07-01 17:12:18 +00:00
clang [ASTImporter] Mark erroneous nodes in shared st 2019-07-01 15:37:07 +00:00
clang-tools-extra Summary: [Clangd] Added hidden command line option -tweaks to specify which tweaks to enable 2019-07-01 16:55:29 +00:00
compiler-rt [TSan] Attempt to fix linker error for Linux on AArch64 2019-06-29 00:40:45 +00:00
debuginfo-tests Make nrvo-string test more robust. 2019-06-27 20:38:37 +00:00
libclc travis: Add LLVM-8 build 2019-03-27 21:28:31 +00:00
libcxx Implement LWG2221: 'Formatted output for nullptr_t' Reviewed as: https://reviews.llvm.org/D63053 2019-07-01 16:20:25 +00:00
libcxxabi [demangle] Support for C++2a char8_t 2019-06-28 19:54:19 +00:00
libunwind [libunwind][AArch64] Fix libunwind::Registers_arm64::jumpto 2019-06-17 11:00:21 +00:00
lld [ELF][RISCV] Support PLT, GOT, copy and relative relocations 2019-07-01 17:12:18 +00:00
lldb [lldb] [Process/NetBSD] Use global enable bits for watchpoints 2019-07-01 15:11:42 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm AMDGPU/GlobalISel: RegBankSelect for DS ordered add/swap 2019-07-01 17:04:57 +00:00
openmp [OPENMP][NVPTX]Relax flush directive. 2019-06-27 18:33:09 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly [test] Add wrap flags after D61934. 2019-06-17 19:17:07 +00:00
pstl [pstl] Default to the serial backend when unspecified 2019-06-20 17:56:51 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitignore Add a reduced copy of the llvm .gitignore 2019-04-09 00:52:49 +00:00
README.md
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README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.