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Alex Bradbury 9c03e4cacd [RISCV] Support .option relax and .option norelax 
This extends the .option support from D45864 to enable/disable the relax 
feature flag from D44886

During parsing of the relax/norelax directives, the RISCV::FeatureRelax 
feature bits of the SubtargetInfo stored in the AsmParser are updated 
appropriately to reflect whether relaxation is currently enabled in the 
parser. When an instruction is parsed, the parser checks if relaxation is 
currently enabled and if so, gets a handle to the AsmBackend and sets the 
ForceRelocs flag. The AsmBackend uses a combination of the original 
RISCV::FeatureRelax feature bits set by e.g -mattr=+/-relax and the 
ForceRelocs flag to determine whether to emit relocations for symbol and 
branch diffs. Diff relocations should therefore only not be emitted if the 
relax flag was not set on the command line and no instruction was ever parsed 
in a section with relaxation enabled to ensure correct diffs are emitted.

Differential Revision: https://reviews.llvm.org/D46423
Patch by Lewis Revill.

llvm-svn: 346655
 		2018-11-12 14:25:07 +00:00
clang Make clang-based tools find libc++ on MacOS 2018-11-12 13:55:55 +00:00
clang-tools-extra Add a test checking clang-tidy can find libc++ on Mac 2018-11-12 13:56:09 +00:00
compiler-rt Correct atexit(3) support in MSan/NetBSD 2018-11-10 02:17:32 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc r600: Add datalayout to image builtin implementation 2018-11-10 21:43:40 +00:00
libcxx Update to-do list with new work from WG21 meeting in San Diego 2018-11-12 04:58:00 +00:00
libcxxabi Port LLVM r346606 to libcxxabi. 2018-11-11 10:09:06 +00:00
libunwind [CMake] Link to compiler-rt if LIBUNWIND_USE_COMPILER_RT is ON. 2018-10-08 18:35:00 +00:00
lld [ELF] Change GnuPub{Names,Types}Section from StringRef to LLDDWARFSection 2018-11-11 18:57:35 +00:00
lldb Fix an unused variable warning. NFC 2018-11-12 13:41:42 +00:00
llgo
…
llvm [RISCV] Support .option relax and .option norelax 2018-11-12 14:25:07 +00:00
openmp [OPENMP]Make lambda mapping follow reqs for PTR_AND_OBJ mapping. 2018-11-08 15:47:30 +00:00
parallel-libs
…
polly [CMake] Fix generation of exported targets in build directory 2018-11-06 15:18:17 +00:00
README.md Update the project name in README.md 2018-10-19 00:03:01 +00:00

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.