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Mirror of https://github.com/RPCS3/llvm-mirror
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Fangrui Song 6ef5900ddb [InstrProfiling] Place __llvm_prf_vnodes and __llvm_prf_names in llvm.used on ELF 
`__llvm_prf_vnodes` and `__llvm_prf_names` are used by runtime but not
referenced via relocation in the translation unit.

With `-z start-stop-gc` (LLD 13 (D96914); GNU ld 2.37 https://sourceware.org/bugzilla/show_bug.cgi?id=27451),
the linker does not let `__start_/__stop_` references retain their sections.

Place `__llvm_prf_vnodes` and `__llvm_prf_names` in `llvm.used` to make
them retained by the linker.

This patch changes most existing `UsedVars` cases to `CompilerUsedVars`
to reflect the ideal state - if the binary format properly supports
section based GC (dead stripping), `llvm.compiler.used` should be sufficient.

`__llvm_prf_vnodes` and `__llvm_prf_names` are switched to `UsedVars`
since we want them to be unconditionally retained by both compiler and linker.

Behaviors on COFF/Mach-O are not affected.

Reviewed By: davidxl

Differential Revision: https://reviews.llvm.org/D97649
2021-03-03 11:32:24 -08:00
benchmarks
bindings [Go] Fix bindings/go/llvm/IRBindings.cpp 2020-12-16 10:09:58 -08:00
cmake [PR48898][CMake] Support MinGW Toolchain tool sin llvm_ExternalProject_Add 2021-03-02 22:45:05 +01:00
docs Revert "[ObjC][ARC] Use operand bundle 'clang.arc.attachedcall' instead of explicitly emitting retainRV or claimRV calls in the IR" 2021-03-03 15:51:40 +01:00
examples [Draft] [examples] Move llvm/examples/OCaml-Kaleidoscope/ to llvm-archive 2021-02-11 06:52:24 +05:30
include [InstrProfiling] Place __llvm_prf_vnodes and __llvm_prf_names in llvm.used on ELF 2021-03-03 11:32:24 -08:00
lib [InstrProfiling] Place __llvm_prf_vnodes and __llvm_prf_names in llvm.used on ELF 2021-03-03 11:32:24 -08:00
projects llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
resources
runtimes [PR48898][CMake] Support MinGW Toolchain tool sin llvm_ExternalProject_Add 2021-03-02 22:45:05 +01:00
test [InstrProfiling] Place __llvm_prf_vnodes and __llvm_prf_names in llvm.used on ELF 2021-03-03 11:32:24 -08:00
tools [CSSPGO][llvm-profgen] Continue disassembling after illegal instruction is seen. 2021-03-03 10:14:10 -08:00
unittests [AMDGPU] Rename amdgcn_wwm to amdgcn_strict_wwm 2021-03-03 09:33:57 +01:00
utils [FileCheck] Do not skip end of line in diagnostics 2021-03-03 08:20:39 +00:00
.clang-format
.clang-tidy
.gitattributes
.gitignore
CMakeLists.txt [cmake] Move check for libproc to config-ix.cmake 2021-02-18 10:54:27 +01:00
CODE_OWNERS.TXT Change XCore code owner. 2021-01-14 12:13:48 +00:00
configure
CREDITS.TXT [NFC] Add contributors names to CREDITS.TXT 2020-10-07 13:22:55 -04:00
LICENSE.TXT
llvm.spec.in
README.txt
RELEASE_TESTERS.TXT

README.txt 

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.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
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If you are writing a package for LLVM, see docs/Packaging.rst for our
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