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Clang was taking around 30 seconds to compile assembler.cpp on my
machine, with most of its time spent in code generation for the global
initializer for `lookup`.
Changing the map key from `std::string` to `std::string_view` drops
compile time to under a second. This is because the compiler no longer
has to code gen the allocation, initialization, and moves of 2,100
`std::string`s. `std::string_view` is effectively free to initialize in
comparison.
While I was here I made the map `static const`. It's not required for
the build time improvement, but it is more correct and helped me check
that no-one is mutating the map.
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* Remove dependency on capstone for PowerPC disassembly #6292
* Add support for PowerPC VLE instruction set #6740
* Add support for paired-single instructions #6821
* Various post-merge fixes and tweaks to disassembly and lifting
* Removal of dependence on capstone for assembler's scoring mechanism (capstone currently disabled, but not removed from codebase yet)
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of subis
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recognized (due to changes in capstone register numbering)": handles new capstone flag numbers, allows assembling `isel` instructions with capstone syntax, disassembles flag registers with capstone syntax
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