Bruce Evans d2012f3333 Add an alternative view of the bits in an 80-bit long double (64+16 ... instead of 32+32+15+1) on all arches that have such long doubles (amd64, ia64 and i386). Large objects should be be accessed in large units, and the 32+32+15+1[+padding] decomposition asks for almost the opposite of that, sometimes resulting in very slow accesses depending on how well the compiler ignores what we ask for and converts to the best units for the given machine. E.g., on Athlons, there is a 10-20 cycle penalty for accessing the middle 32-bit word immediately after an 80-bit store. Whether actually using the alternative view is better is very machine- dependent. A 32+32+16 view is probably best with old 32-bit systems and gcc through 4.2.1. The compiler should mostly avoid the view and generate best accesses, but gcc-4.2.1 is far from doing that. I think 64+16 is best for now. Similarly for doubles -- they should be using 64+0 especially on 64-bit machines, but fdlibm uses 32+32 extensively for them. Fortunately, in 64-bit mode for doubles, gcc already ignores the 32+32-bit view and generates best accesses in many cases.		2008-01-17 16:39:07 +00:00
..
gen	Remove silly n that crept in	2007-01-09 00:38:24 +00:00
stdlib	Import amd64 assembly implementations of div(3) family from NetBSD.	2007-04-04 01:19:54 +00:00
string
sys	Classify mmap, lseek, pread, pwrite, truncate, ftruncate as pseudo	2007-07-04 23:23:01 +00:00
_fpmath.h	Add an alternative view of the bits in an 80-bit long double (64+16	2008-01-17 16:39:07 +00:00
arith.h
gd_qnan.h	Arrange so that the NaN returned by strtod("nan", NULL) is the same as	2007-12-16 21:15:09 +00:00
Makefile.inc	In scanf, round according to the current rounding mode.	2007-12-03 07:17:33 +00:00
Symbol.map	Since nan() is supposed to work the same as strtod("nan(...)", NULL),	2007-12-18 23:46:32 +00:00
SYS.h	Adjust the syscall stub macros to be consistent in their meaning. In	2007-07-04 23:18:38 +00:00