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Simon Pilgrim 2ec8373633 [X86][SSE] truncateVectorWithPACK - Use src type instead of dst to select between PACK*SDW/PACK*SWB 
Try to keep PACK*SDW/PACK*SWB as wide as possible, this helps ComputeNumSignBits as it can only peek through bitcasts to wider types, pre-AVX2 codegen was already doing this as it could peek through bitcasts/subvectors more easily than AVX2 could through shuffles.

This shouldn't affect existing results as calls to truncateVectorWithPACK ensure we have enough sign bits to pack to the same value, but it should make it possible to use truncateVectorWithPACK chains to perform saturation in combineTruncateWithSat with a future patch.

llvm-svn: 325149
 		2018-02-14 18:23:58 +00:00
clang [OpenMP] Fix trailing space when printing pragmas, by Joel. E. Denny 2018-02-14 17:38:47 +00:00
clang-tools-extra [clangd] Fix data race in ClangdThreadingTest.StressTest 2018-02-14 15:19:20 +00:00
compiler-rt [libFuzzer] Set -experimental_len_control=1000 as default. 2018-02-13 20:52:15 +00:00
debuginfo-tests [debuginfo-tests] Support moving debuginfo-tests to llvm/projects 2017-12-12 16:54:20 +00:00
libclc amdgpu/half_recip: Switch implementation to native_recip 2018-02-13 22:09:46 +00:00
libcxx Add a catch for std::length_error for the case where the string can't handle 2GB. (like say 32-bit big-endian) 2018-02-14 18:05:25 +00:00
libcxxabi [demangler] Support for exception specifications on function types. 2018-02-14 01:08:20 +00:00
libunwind [cmake] [libunwind] LLVM_FOUND isn't always set, so just test if 2018-01-27 19:31:44 +00:00
lld [ELF] Add warnings for various symbols that cannot be ordered 2018-02-14 13:36:22 +00:00
lldb Remove vestigial remnants of the test crash info hook 2018-02-14 16:08:26 +00:00
llgo irgen: Create functions instead of global variables for builtin hash and equal algorithms. 2017-06-04 22:11:28 +00:00
llvm [X86][SSE] truncateVectorWithPACK - Use src type instead of dst to select between PACK*SDW/PACK*SWB 2018-02-14 18:23:58 +00:00
openmp [OMPT][test] Correct warning about added wrapper functions 2018-02-14 15:15:24 +00:00
parallel-libs [Axccel] Remove -Wno-missing-braces in build 2016-12-19 21:34:07 +00:00
polly [ScopBuilder] scalar-indep: Fix mutually referencing PHIs. 2018-02-12 21:09:40 +00:00
README.md Add an svn project to contain the files that appear at the root of the 2017-10-19 21:09:49 +00:00

README.md

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.