forked from OSchip/llvm-project
77f62652c1
This patch teaches FastIsel the following two things: 1) On SSE2, no instructions are needed for bitcasts between 128-bit vector types; 2) On AVX, no instructions are needed for bitcasts between 256-bit vector types. Example: %1 = bitcast <4 x i31> %V to <2 x i64> Before (-fast-isel -fast-isel-abort=1): FastIsel miss: %1 = bitcast <4 x i31> %V to <2 x i64> Now we don't fall back to SelectionDAG and we correctly fold that computation propagating the register associated to %V. Originally reviewed here: http://reviews.llvm.org/D13347 llvm-svn: 249147 |
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| .arcconfig | ||
| .clang-format | ||
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| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
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| LICENSE.TXT | ||
| LLVMBuild.txt | ||
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| Makefile.common | ||
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| README.txt | ||
| configure | ||
| llvm.spec.in | ||
README.txt
Low Level Virtual Machine (LLVM) ================================ 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're writing a package for LLVM, see docs/Packaging.rst for our suggestions.