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14fc08301c
This fixes a regression introduced at revision 231243. The target-independent selection algorithm in FastISel knows how to select a SINT_TO_FP if the target is SSE but not AVX. That is because on X86, the tablegen'd 'fastEmit' functions know how to select CVTSI2SSrr and CVTSI2SDrr. Method X86FastISel::X86SelectSIToFP was therefore working under the wrong assumption that the target was AVX. That assumption was incorrect since we can have a target that is neither AVX nor SSE. So, rather than asserting for the presence of AVX, we should have had an early exit from 'X86SelectSIToFP' if the target was not AVX. This patch fixes the issue replacing the invalid assertion with an early exit. Thanks to Dimitry Andric for reporting this problem and for providing a small reproducible testcase. Added test pr23273.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235295 91177308-0d34-0410-b5e6-96231b3b80d8 |
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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.