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Add dontthrow attribute to most libc functions

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This will help C++ code that uses exceptions to be tinier. For example,
this change shaves away 1000 lines of assembly code from LLVM's libcxx,
which is 0.7% of all assembly instructions in the entire library.
This commit is contained in:
Justine Tunney 2024-01-09 01:26:03 -08:00
parent cb19e172da
commit eeb20775d2
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GPG key ID: BE714B4575D6E328
103 changed files with 1455 additions and 1456 deletions
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6
libc/intrin/bsr.h
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@ -2,9 +2,9 @@
#define COSMOPOLITAN_LIBC_NEXGEN32E_BSR_H_
COSMOPOLITAN_C_START_
int _bsr(int) pureconst;
int _bsrl(long) pureconst;
int _bsrll(long long) pureconst;
libcesque int _bsr(int) pureconst;
libcesque int _bsrl(long) pureconst;
libcesque int _bsrll(long long) pureconst;
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
#define _bsr(x) (__builtin_clz(x) ^ (sizeof(int) * 8 - 1))