forked from OSchip/llvm-project
9c52309b37
Lower i1, i8 and i16 call parameters by extending them before storing them on the stack. Also make sure we encode the correct, extended size in the corresponding memory operand, and that we compute the correct stack size in the end. The latter is a bit more complicated because we used to compute the stack size in the getStackAddress method, based on the Size and Offset of the parameters. However, if the last parameter is sign extended, we'd be using the wrong, non-extended size, and we'd end up with a smaller stack than we need to hold the extended value. Instead of hacking this up based on the value of Size in getStackAddress, we move our stack size handling logic to assignArg, where we have access to the CCState which knows everything we could possibly want to know about the stack. This way we don't need to duplicate any knowledge or resort to any ugly hacks. On this same occasion, update the IRTranslator test to check the sizes of the stores everywhere, not just for sign extended paramteres. llvm-svn: 296631 |
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README.txt
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 are writing a package for LLVM, see docs/Packaging.rst for our suggestions.