mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-24 22:32:28 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Improve performance of bitscanning intrinsics

Browse source 
This change helps spectre more intelligently plan execution, by working
around false output dependencies, impacting ops like popcnt bsr and bsf
This commit is contained in:
Justine Tunney 2021-06-15 06:24:46 -07:00
parent 29cb53881e
commit 87d7010495
13 changed files with 100 additions and 224 deletions
Download patch file Download diff file Expand all files Collapse all files

12
libc/testlib/blocktronics.h Normal file
View file

@ -0,0 +1,12 @@
#ifndef COSMOPOLITAN_LIBC_TESTLIB_BLOCKTRONICS_H_
#define COSMOPOLITAN_LIBC_TESTLIB_BLOCKTRONICS_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
extern size_t kBlocktronicsSize;
extern char kBlocktronics[];
extern uint8_t kBlocktronicsZip[];
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_TESTLIB_BLOCKTRONICS_H_ */