24 Commits

Author	SHA1	Message	Date
Russ Cox	f2bd3a977d	cmd/6l, cmd/8l, cmd/5l: add AUNDEF instruction ... On 6l and 8l, this is a real instruction, guaranteed to cause an 'undefined instruction' exception. On 5l, we simulate it as BL to address 0. The plan is to use it as a signal to the linker that this point in the instruction stream cannot be reached (hence the changes to nofollow). This will help the compiler explain that panicindex and friends do not return without having to put a list of these functions in the linker. R=ken2 CC=golang-dev https://golang.org/cl/6255064	2012-05-30 16:47:56 -04:00
Russ Cox	6a22e2fb3f	cmd/6a: delete dead code ... R=ken2 CC=golang-dev https://golang.org/cl/6223060	2012-05-22 11:42:44 -04:00
Russ Cox	ed480128a6	cmd/6a, cmd/6l: add BSWAPL, BSWAPQ ... R=ken2 CC=golang-dev https://golang.org/cl/6209087	2012-05-22 00:12:58 -04:00
Russ Cox	35d260fa4c	6a, 6l: add PREFETCH instructions ... R=ken2 CC=golang-dev https://golang.org/cl/5989073	2012-04-10 10:09:09 -04:00
Shenghou Ma	6af069f3e1	5a, 6a, 8a: take GOROOT_FINAL into consideration ... R=golang-dev, rsc CC=golang-dev https://golang.org/cl/5940052	2012-04-04 00:03:42 +08:00
Adam Langley	36d3707009	6a/6l: add IMUL3Q and SHLDL ... Although Intel considers the three-argument form of IMUL to be a variant of IMUL, I couldn't make 6l able to differentiate it without huge changes, so I called it IMUL3. R=rsc CC=golang-dev https://golang.org/cl/5686055	2012-02-23 10:51:04 -05:00
Hector Chu	aed2c06dcb	5a, 5c, 6a, 6c, 8a, 8c: fix Windows file paths ... Verified with objdump -W. R=alex.brainman, rsc CC=golang-dev https://golang.org/cl/4974061	2011-09-07 15:49:56 -04:00
Jaroslavas Počepko	a88994f804	6l, 8l: remove JCXZ; add JCXZW, JCXZL, and JCXZQ ... R=golang-dev CC=golang-dev, rsc https://golang.org/cl/4950050	2011-08-26 17:45:19 -04:00
Dmitriy Vyukov	4e5086b993	runtime: improve Linux mutex ... The implementation is hybrid active/passive spin/blocking mutex. The design minimizes amount of context switches and futex calls. The idea is that all critical sections in runtime are intentially small, so pure blocking mutex behaves badly causing a lot of context switches, thread parking/unparking and kernel calls. Note that some synthetic benchmarks become somewhat slower, that's due to increased contention on other data structures, it should not affect programs that do any real work. On 2 x Intel E5620, 8 HT cores, 2.4GHz benchmark old ns/op new ns/op delta BenchmarkSelectContended 521.00 503.00 -3.45% BenchmarkSelectContended-2 661.00 320.00 -51.59% BenchmarkSelectContended-4 1139.00 629.00 -44.78% BenchmarkSelectContended-8 2870.00 878.00 -69.41% BenchmarkSelectContended-16 5276.00 818.00 -84.50% BenchmarkChanContended 112.00 103.00 -8.04% BenchmarkChanContended-2 631.00 174.00 -72.42% BenchmarkChanContended-4 682.00 272.00 -60.12% BenchmarkChanContended-8 1601.00 520.00 -67.52% BenchmarkChanContended-16 3100.00 372.00 -88.00% BenchmarkChanSync 253.00 239.00 -5.53% BenchmarkChanSync-2 5030.00 4648.00 -7.59% BenchmarkChanSync-4 4826.00 4694.00 -2.74% BenchmarkChanSync-8 4778.00 4713.00 -1.36% BenchmarkChanSync-16 5289.00 4710.00 -10.95% BenchmarkChanProdCons0 273.00 254.00 -6.96% BenchmarkChanProdCons0-2 599.00 400.00 -33.22% BenchmarkChanProdCons0-4 1168.00 659.00 -43.58% BenchmarkChanProdCons0-8 2831.00 1057.00 -62.66% BenchmarkChanProdCons0-16 4197.00 1037.00 -75.29% BenchmarkChanProdCons10 150.00 140.00 -6.67% BenchmarkChanProdCons10-2 607.00 268.00 -55.85% BenchmarkChanProdCons10-4 1137.00 404.00 -64.47% BenchmarkChanProdCons10-8 2115.00 828.00 -60.85% BenchmarkChanProdCons10-16 4283.00 855.00 -80.04% BenchmarkChanProdCons100 117.00 110.00 -5.98% BenchmarkChanProdCons100-2 558.00 218.00 -60.93% BenchmarkChanProdCons100-4 722.00 287.00 -60.25% BenchmarkChanProdCons100-8 1840.00 431.00 -76.58% BenchmarkChanProdCons100-16 3394.00 448.00 -86.80% BenchmarkChanProdConsWork0 2014.00 1996.00 -0.89% BenchmarkChanProdConsWork0-2 1207.00 1127.00 -6.63% BenchmarkChanProdConsWork0-4 1913.00 611.00 -68.06% BenchmarkChanProdConsWork0-8 3016.00 949.00 -68.53% BenchmarkChanProdConsWork0-16 4320.00 1154.00 -73.29% BenchmarkChanProdConsWork10 1906.00 1897.00 -0.47% BenchmarkChanProdConsWork10-2 1123.00 1033.00 -8.01% BenchmarkChanProdConsWork10-4 1076.00 571.00 -46.93% BenchmarkChanProdConsWork10-8 2748.00 1096.00 -60.12% BenchmarkChanProdConsWork10-16 4600.00 1105.00 -75.98% BenchmarkChanProdConsWork100 1884.00 1852.00 -1.70% BenchmarkChanProdConsWork100-2 1235.00 1146.00 -7.21% BenchmarkChanProdConsWork100-4 1217.00 619.00 -49.14% BenchmarkChanProdConsWork100-8 1534.00 509.00 -66.82% BenchmarkChanProdConsWork100-16 4126.00 918.00 -77.75% BenchmarkSyscall 34.40 33.30 -3.20% BenchmarkSyscall-2 160.00 121.00 -24.38% BenchmarkSyscall-4 131.00 136.00 +3.82% BenchmarkSyscall-8 139.00 131.00 -5.76% BenchmarkSyscall-16 161.00 168.00 +4.35% BenchmarkSyscallWork 950.00 950.00 +0.00% BenchmarkSyscallWork-2 481.00 480.00 -0.21% BenchmarkSyscallWork-4 268.00 270.00 +0.75% BenchmarkSyscallWork-8 156.00 169.00 +8.33% BenchmarkSyscallWork-16 188.00 184.00 -2.13% BenchmarkSemaSyntNonblock 36.40 35.60 -2.20% BenchmarkSemaSyntNonblock-2 81.40 45.10 -44.59% BenchmarkSemaSyntNonblock-4 126.00 108.00 -14.29% BenchmarkSemaSyntNonblock-8 112.00 112.00 +0.00% BenchmarkSemaSyntNonblock-16 110.00 112.00 +1.82% BenchmarkSemaSyntBlock 35.30 35.30 +0.00% BenchmarkSemaSyntBlock-2 118.00 124.00 +5.08% BenchmarkSemaSyntBlock-4 105.00 108.00 +2.86% BenchmarkSemaSyntBlock-8 101.00 111.00 +9.90% BenchmarkSemaSyntBlock-16 112.00 118.00 +5.36% BenchmarkSemaWorkNonblock 810.00 811.00 +0.12% BenchmarkSemaWorkNonblock-2 476.00 414.00 -13.03% BenchmarkSemaWorkNonblock-4 238.00 228.00 -4.20% BenchmarkSemaWorkNonblock-8 140.00 126.00 -10.00% BenchmarkSemaWorkNonblock-16 117.00 116.00 -0.85% BenchmarkSemaWorkBlock 810.00 811.00 +0.12% BenchmarkSemaWorkBlock-2 454.00 466.00 +2.64% BenchmarkSemaWorkBlock-4 243.00 241.00 -0.82% BenchmarkSemaWorkBlock-8 145.00 137.00 -5.52% BenchmarkSemaWorkBlock-16 132.00 123.00 -6.82% BenchmarkContendedSemaphore 123.00 102.00 -17.07% BenchmarkContendedSemaphore-2 34.80 34.90 +0.29% BenchmarkContendedSemaphore-4 34.70 34.80 +0.29% BenchmarkContendedSemaphore-8 34.70 34.70 +0.00% BenchmarkContendedSemaphore-16 34.80 34.70 -0.29% BenchmarkMutex 26.80 26.00 -2.99% BenchmarkMutex-2 108.00 45.20 -58.15% BenchmarkMutex-4 103.00 127.00 +23.30% BenchmarkMutex-8 109.00 147.00 +34.86% BenchmarkMutex-16 102.00 152.00 +49.02% BenchmarkMutexSlack 27.00 26.90 -0.37% BenchmarkMutexSlack-2 149.00 165.00 +10.74% BenchmarkMutexSlack-4 121.00 209.00 +72.73% BenchmarkMutexSlack-8 101.00 158.00 +56.44% BenchmarkMutexSlack-16 97.00 129.00 +32.99% BenchmarkMutexWork 792.00 794.00 +0.25% BenchmarkMutexWork-2 407.00 409.00 +0.49% BenchmarkMutexWork-4 220.00 209.00 -5.00% BenchmarkMutexWork-8 267.00 160.00 -40.07% BenchmarkMutexWork-16 315.00 300.00 -4.76% BenchmarkMutexWorkSlack 792.00 793.00 +0.13% BenchmarkMutexWorkSlack-2 406.00 404.00 -0.49% BenchmarkMutexWorkSlack-4 225.00 212.00 -5.78% BenchmarkMutexWorkSlack-8 268.00 136.00 -49.25% BenchmarkMutexWorkSlack-16 300.00 300.00 +0.00% BenchmarkRWMutexWrite100 27.10 27.00 -0.37% BenchmarkRWMutexWrite100-2 33.10 40.80 +23.26% BenchmarkRWMutexWrite100-4 113.00 88.10 -22.04% BenchmarkRWMutexWrite100-8 119.00 95.30 -19.92% BenchmarkRWMutexWrite100-16 148.00 109.00 -26.35% BenchmarkRWMutexWrite10 29.60 29.40 -0.68% BenchmarkRWMutexWrite10-2 111.00 61.40 -44.68% BenchmarkRWMutexWrite10-4 270.00 208.00 -22.96% BenchmarkRWMutexWrite10-8 204.00 185.00 -9.31% BenchmarkRWMutexWrite10-16 261.00 190.00 -27.20% BenchmarkRWMutexWorkWrite100 1040.00 1036.00 -0.38% BenchmarkRWMutexWorkWrite100-2 593.00 580.00 -2.19% BenchmarkRWMutexWorkWrite100-4 470.00 365.00 -22.34% BenchmarkRWMutexWorkWrite100-8 468.00 289.00 -38.25% BenchmarkRWMutexWorkWrite100-16 604.00 374.00 -38.08% BenchmarkRWMutexWorkWrite10 951.00 951.00 +0.00% BenchmarkRWMutexWorkWrite10-2 1001.00 928.00 -7.29% BenchmarkRWMutexWorkWrite10-4 1555.00 1006.00 -35.31% BenchmarkRWMutexWorkWrite10-8 2085.00 1171.00 -43.84% BenchmarkRWMutexWorkWrite10-16 2082.00 1614.00 -22.48% R=rsc, iant, msolo, fw, iant CC=golang-dev https://golang.org/cl/4711045	2011-07-29 12:44:06 -04:00
Lucio De Re	4c6280b0f1	6a, 6c, 6l: fix for Plan 9 build ... 6a/a.h: . Dropped <u.h> and <libc.h>. . Made definition of EOF conditional. 6a/a.y: . Added <u.h> and <libc.h>. 6a/lex.c: . Added <u.h> and <libc.h>. . Dropped <ctype.h> (now in <u.h>). 6c/gc.h: . Added varargck pragma for "lD". 6c/swt.c: . Dropped unused "thestring" argument in Bprint() calls. 6l/Makefile: . Dropped unneeded directory prefix. 6l/l.h: . Dropped unneeded directory prefix. . Added varargck pragma for "I" and "i". 6l/obj.c: . Dropped unneeded assignment. . Dropped unreachable goto statement. 6l/pass.c: . Dropped assignments flagged as unused. 6l/prof.c: . Replaced "#if 0" with "#ifdef NOTDEF". 6l/span.c: . Dropped unused incrementation. . Added USED() as required. . Dropped unreachable "return" statement. R=golang-dev CC=golang-dev, rsc https://golang.org/cl/4747044	2011-07-15 11:58:39 -04:00
Adam Langley	9f4c288c16	hash/crc32: add SSE4.2 support ... Using the CRC32 instruction speeds up the Castagnoli computation by about 20x on a modern Intel CPU. R=rsc CC=golang-dev https://golang.org/cl/4650072	2011-07-12 09:29:24 -04:00
Russ Cox	a46a311dec	5a, 6a, 8a, cc: remove old environment variables ... Uses of $INCLUDE and $NPROC are left over from Plan 9. Remove them to avoid causing confusion. R=golang-dev, r2 CC=golang-dev https://golang.org/cl/4445079	2011-05-02 11:24:32 -04:00
Russ Cox	3f61184e1b	gc, ld: detect stale or incompatible object files ... The object files begin with a header that is $GOARCH on a line by itself. This CL changes that header to go object $GOOS $GOARCH release.2011-01-01 4567+ where the final two fields are the most recent release tag and the current hg version number. All objects imported into a Go compilation or linked into an executable must have the same header line, and that header line must match the compiler and linker versions. The effect of this will be that if you update and run all.bash and then try to link in objects compiled with an earlier version of the compiler (or invoke the wrong version of the compiler), you will get an error showing the different headers instead of perhaps silent incompatibility. Normal usage with all.bash should be unaffected, because all.bash deletes all the object files in $GOROOT/pkg/$GOOS_$GOARCH and cleans all intermediate object files before starting. This change is intended to diagnose stale objects arising when users maintaining alternate installation directories forget to rebuild some of their files after updating. It should help make the adoption of $GOPATH (CL 3780043) less error-prone. R=ken2, r CC=golang-dev https://golang.org/cl/4023063	2011-02-03 13:51:43 -05:00
Luuk van Dijk	2ad521c19a	[568]a: precise linenumbers for statements. ... R=rsc, ken2, r, rsc1 CC=golang-dev https://golang.org/cl/2297042	2010-10-07 11:13:06 +02:00
Dean Prichard	0e47c75f60	5a/6a/8a/5c/6c/8c: remove fixed-size arrays for -I and -D options ... R=rsc CC=golang-dev https://golang.org/cl/198044	2010-02-05 01:40:58 -08:00
Dean Prichard	77053797e0	avoid overflow of symb buffer in 5a/6a/8a/5c/6c/8c ... R=rsc CC=golang-dev https://golang.org/cl/194099	2010-01-28 16:11:38 -08:00
Dean Prichard	07d3e0dce4	5a/6a/8a: avoid fixed-sized file name buffer ... R=rsc CC=golang-dev https://golang.org/cl/186279	2010-01-22 16:59:17 -08:00
Russ Cox	5a68303a15	throw away most of the compat.h compatibility layer ... in favor of the lib9 compatibility layer. no need for two. now that mycreate is gone, .6 files are 0644 not 0755. TBR=r OCL=26679 CL=26679	2009-03-24 12:12:57 -07:00
Russ Cox	0932b1f9b8	move pragtextflag into lexbody ... R=ken OCL=26581 CL=26587	2009-03-20 14:22:37 -07:00
Ken Thompson	e90314d024	pragma textflag ... fixes latent bugs in go and defer R=r OCL=23613 CL=23613	2009-01-27 14:12:35 -08:00
Russ Cox	9aad9fef76	make 6a, 6c, 6g, 6l, libmach_amd64 build on 64-bit gcc. ... these guys really really want long to be 32-bits, so ,s/long/int32/ (and then manual fixup). still passes all tests. (i started out looking for just those longs that needed to be int32 instead, and it was just too hard to track them down one by one.) the longs were rare enough that i don't think it will cause integration problems. R=ken OCL=13787 CL=13789	2008-08-03 17:25:15 -07:00
Ken Thompson	3f982aeaf6	morestack magic number ... automatically generated in 6g and 6c, manually set in 6a. format is TEXT a(SB),, $a-b where a is auto size and b is parameter size SVN=126946	2008-07-12 17:16:22 -07:00
Ken Thompson	8527f49e24	goos and goarch ... SVN=121349	2008-06-05 16:57:26 -07:00
Rob Pike	0cafb9ea3d	Add compiler source to new directory structure ... SVN=121164	2008-06-04 14:37:38 -07:00