forked from OSchip/llvm-project
8df9cfc279
1) Make non-legal 256-bit loads to be promoted to v4i64. This lets us canonize the loads and handle things the same way we use to handle for 128-bit registers. Despite of what one of the removed comments explained, the load promotion would not mess with VPERM, it's only a matter of doing the appropriate bitcasts when this instructions comes to be introduced. Also make LOAD v8i32 legal. 2) Doing 1) exposed two bugs: - v4i64 was being promoted to itself for several opcodes (introduced in r124447 by David Greene) causing endless recursion and the stack to explode. - there was no support for allOnes BUILD_VECTORs and ANDNP would fail to match because it was generating early target constant pools during lowering. 3) The testcases are already checked-in, doing 1) exposed the bugs in the current testcases. 4) Tidy up code to be more clear and explicit about AVX. llvm-svn: 135313 |
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README.txt
Low Level Virtual Machine (LLVM) ================================ This directory and its subdirectories contain source code for the Low Level Virtual Machine, 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 HTML documentation provided in docs/index.html for further assistance with LLVM. If you're writing a package for LLVM, see docs/Packaging.html for our suggestions.