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LLVM backend for 6502
2e363ece75
matching. This design just fundamentally didn't work because ADDSUB is available prior to any legal lowerings of BLENDI nodes. Instead, we have a dedicated ADDSUB synthetic ISD node which is pattern matched trivially into the instructions. These nodes are then recognized by both the existing and a trivial new lowering combine in the backend. Removing these patterns required adding 2 missing shuffle masks to the DAG combine, without which tests would have failed. Added the masks and a helpful assert as well to catch if anything ever goes wrong here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217851 91177308-0d34-0410-b5e6-96231b3b80d8 |
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| lib | ||
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| test | ||
| tools | ||
| unittests | ||
| utils | ||
| .arcconfig | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| configure | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| llvm.spec.in | ||
| LLVMBuild.txt | ||
| Makefile | ||
| Makefile.common | ||
| Makefile.config.in | ||
| Makefile.rules | ||
| README.txt | ||
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