47 lines
1.9 KiB
Plaintext
47 lines
1.9 KiB
Plaintext
chibicc is the simplest/tiniest/hackable/readable c11 compiler in the
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world that can build projects like python but goes 2x slower than gcc
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with 2x the code size, because it doesn't optimize or color registers
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although it can compile code at 5x the speed and could be even faster
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which is great, considering it's a 220kb αcτµαlly pδrταblε εxεcµταblε
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local enhancements
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- support dce
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- support gnu asm
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- support __int128
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- support _Static_assert
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- support __vector_size__
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- support __builtin_add_overflow, etc.
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- support __builtin_memcpy, strlen, strpbrk, etc.
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- support __builtin_constant_p, __builtin_likely, etc.
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- support __builtin_isunordered, __builtin_islessgreater, etc.
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- support __builtin_ctz, __builtin_bswap, __builtin_popcount, etc.
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- support __force_align_arg_pointer__, __no_caller_saved_registers__, etc.
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- support __constructor__, __section__, __cold__, -ffunction-sections, etc.
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- support building -x assembler-with-cpp a.k.a. .S files
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- support profiling w/ -mcount / -mfentry / -mnop-mcount
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- improve error messages to trace macro expansions
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- reduce #lines of generated assembly by a third
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- reduce #bytes of generated binary by a third
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- report divide errors in constexprs
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local bug fixes
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- allow casted values to be lvalues
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- permit remainder operator in constexprs
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- permit parentheses around string-initializer
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- fix 64-bit bug in generated code for struct bitfields
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- fix struct_designator() so it won't crash on anonymous union members
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- fix bug where last statement in statement expression couldn't have label
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- print_tokens (chibicc -E) now works in the case of adjacent string literals
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- make enums unsigned (like gcc) so we don't suffer the msvc enum bitfield bug
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local changes
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- use tabs in generated output
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- parse javadoc-style markdown comments
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- don't fold backslash newline in comments
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- generated code no longer assumes red zone
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- emit .size directives for function definitions
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- use fisttp long double conversions if built w/ -msse3
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