mirror of
https://github.com/RPCSX/llvm.git
synced 2025-04-01 07:41:40 +00:00
6c347524e2
This fixes a regression introduced at revision 218263. On AVX, if we optimize for size, a splat build_vector of a load is lowered into a VBROADCAST node. This is done even if the value type of the splat build_vector node is v2i64. Since AVX doesn't support v2f64/v2i64 broadcasts, revision 218263 added two extra tablegen patterns to allow selecting a VMOVDDUPrm from an X86VBroadcast where the scalar element comes from a loadi64/loadf64. However, revision 218263 forgot to add an extra fallback pattern for the case where we have a X86VBroadcast of a loadi64 with multiple uses. This patch adds the missing tablegen pattern in X86InstrSSE.td. This patch also adds an extra test to 'splat-for-size.ll' to verify that ISel doesn't crash with a 'fatal error in the backend' due to a missing AVX pattern to select v2i64 X86ISD::BROADCAST nodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235509 91177308-0d34-0410-b5e6-96231b3b80d8
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.