mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-26 12:43:36 +01:00
Mirror of https://github.com/RPCS3/llvm-mirror
f2b04fe6b7
This patch optimizes the emission of a sequence of SELECTs with the same condition, avoiding the insertion of unnecessary control flow. Such a sequence often occurs when a SELECT of values wider than XLEN is legalized into two SELECTs with legal types. We have identified several use cases where the SELECTs could be interleaved with other instructions. Therefore, we extend the sequence to include non-SELECT instructions if we are able to detect that the non-SELECT instructions do not impact the optimization. This patch supersedes https://reviews.llvm.org/D59096, which attempted to address this issue by introducing a new SelectionDAG node. Hat tip to Eli Friedman for his feedback on how to best handle this issue. Differential Revision: https://reviews.llvm.org/D59355 Patch by Luís Marques. llvm-svn: 356741 |
||
---|---|---|
benchmarks | ||
bindings | ||
cmake | ||
docs | ||
examples | ||
include | ||
lib | ||
projects | ||
resources | ||
runtimes | ||
test | ||
tools | ||
unittests | ||
utils | ||
.arcconfig | ||
.clang-format | ||
.clang-tidy | ||
.gitattributes | ||
.gitignore | ||
CMakeLists.txt | ||
CODE_OWNERS.TXT | ||
configure | ||
CREDITS.TXT | ||
LICENSE.TXT | ||
llvm.spec.in | ||
LLVMBuild.txt | ||
README.txt | ||
RELEASE_TESTERS.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 assistance with LLVM, and in particular docs/GettingStarted.rst for getting started with LLVM and docs/README.txt for an overview of LLVM's documentation setup. If you are writing a package for LLVM, see docs/Packaging.rst for our suggestions.