mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-21 21:29:41 +00:00
ec4db6ab5f
invalid instruction sequence. Rather than emitting an int-to-FP move instruction and an int-to-FP conversion instruction during instruction selection, we emit a pseudo instruction which gets expanded post-RA. Without this change, register allocation can possibly insert a floating point register move instruction between the two instructions, which is not valid according to the ISA manual. mtc1 $f4, $4 # int-to-fp move instruction. mov.s $f2, $f4 # move contents of $f4 to $f2. cvt.s.w $f0, $f2 # int-to-fp conversion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182042 91177308-0d34-0410-b5e6-96231b3b80d8
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 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.