- 14 Aug, 2017 18 commits
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Joe Tsai authored
Since test files don't exceed 10KiB, print the full context of the diff, including bytes that are equal. Also, fix the labels for got and want; they were backwards before. Change-Id: Ibac022e5f988d26812c3f75b643cae8b95603fc9 Reviewed-on: https://go-review.googlesource.com/55151Reviewed-by:
Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Joe Tsai authored
Rather than going through writeHeader, which attempts to handle all formats, implement writePAXHeader, which only has an understanding of the PAX format. In PAX, the USTAR header is filled out in a best-effort manner. Thus, we change logic of formatString and formatOctal to try their best to output something (possibly truncated) in the event of an error. The new implementation of PAX headers causes several tests to fail. An investigation into the new output reveals that the new behavior is correct, while the tests had actually locked in incorrect behavior before. A dump of the differences is listed below (-before, +after): << writer-big.tar >> This change is due to fact that we changed the Header.Devminor to force the tar.Writer to choose the GNU format over the PAX one. The ability to control the output is an open issue (see #18710). - 00000150 00 30 30 30 30 30 30 30 00 00 00 00 00 00 00 00 |.0000000........| + 00000150 00 ff ff ff ff ff ff ff ff 00 00 00 00 00 00 00 |................| << writer-big-long.tar>> The previous logic generated the GNU magic values for a PAX file. The new logic correctly uses the USTAR magic values. - 00000100 00 75 73 74 61 72 20 20 00 00 00 00 00 00 00 00 |.ustar ........| - 00000500 00 75 73 74 61 72 20 20 00 67 75 69 6c 6c 61 75 |.ustar .guillau| + 00000100 00 75 73 74 61 72 00 30 30 00 00 00 00 00 00 00 |.ustar.00.......| + 00000500 00 75 73 74 61 72 00 30 30 67 75 69 6c 6c 61 75 |.ustar.00guillau| The previous logic tried to use the specified timestmap in the PAX headers file, but this is problematic as this timestamp can overflow, defeating the point of using PAX, which is intended to extend tar. The new logic uses the zero timestamp similar to what GNU and BSD tar do. - 00000080 30 30 30 30 32 33 32 00 31 32 33 33 32 37 37 30 |0000232.12332770| + 00000080 30 30 30 30 32 35 36 00 30 30 30 30 30 30 30 30 |0000256.00000000| The previous logic populated the devminor and devmajor fields. The new logic leaves them zeroed just like what GNU and BSD tar do. - 00000140 00 00 00 00 00 00 00 00 00 30 30 30 30 30 30 30 |.........0000000| - 00000150 00 30 30 30 30 30 30 30 00 00 00 00 00 00 00 00 |.0000000........| + 00000140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| The previous logic uses PAX headers, but fails to add a record for the size. The new logic does properly add a record for the size. - 00000290 31 36 67 69 67 2e 74 78 74 0a 00 00 00 00 00 00 |16gig.txt.......| - 000002a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 00000290 31 36 67 69 67 2e 74 78 74 0a 32 30 20 73 69 7a |16gig.txt.20 siz| + 000002a0 65 3d 31 37 31 37 39 38 36 39 31 38 34 0a 00 00 |e=17179869184...| The previous logic encoded the size as a base-256 field, which is only valid in GNU, but the previous PAX headers implies this should be a PAX file. This result in a strange hybrid that is neither GNU nor PAX. The new logic uses PAX headers to store the size. - 00000470 37 35 30 00 30 30 30 31 37 35 30 00 80 00 00 00 |750.0001750.....| - 00000480 00 00 00 04 00 00 00 00 31 32 33 33 32 37 37 30 |........12332770| + 00000470 37 35 30 00 30 30 30 31 37 35 30 00 30 30 30 30 |750.0001750.0000| + 00000480 30 30 30 30 30 30 30 00 31 32 33 33 32 37 37 30 |0000000.12332770| << ustar.issue12594.tar >> The previous logic used the specified timestamp for the PAX headers file. The new logic just uses the zero timestmap. - 00000080 30 30 30 30 32 33 31 00 31 32 31 30 34 34 30 32 |0000231.12104402| + 00000080 30 30 30 30 32 33 31 00 30 30 30 30 30 30 30 30 |0000231.00000000| The previous logic populated the devminor and devmajor fields. The new logic leaves them zeroed just like what GNU and BSD tar do. - 00000140 00 00 00 00 00 00 00 00 00 30 30 30 30 30 30 30 |.........0000000| - 00000150 00 30 30 30 30 30 30 30 00 00 00 00 00 00 00 00 |.0000000........| + 00000140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| Change-Id: I33419eb1124951968e9d5a10d50027e03133c811 Reviewed-on: https://go-review.googlesource.com/55231Reviewed-by:
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Hiroshi Ioka authored
Just like https://golang.org/cl/34783 Given cgo.go: 1 package main 2 3 /* 4 long double x = 0; 5 */ 6 import "C" 7 8 func main() { 9 _ = C.x 10 _ = C.x 11 } Before: ./cgo.go:10:6: unexpected: 16-byte float type - long double After: ./cgo.go:9:6: unexpected: 16-byte float type - long double The above test case is not portable. So it is tested on only amd64. Change-Id: If0b84cf73d381a22e2ada71c8e9a6e6ec77ffd2e Reviewed-on: https://go-review.googlesource.com/54950Reviewed-by:
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Hiroshi Ioka authored
We might want to replace some linker's feature by debug/macho in future. This CL gathers information of required constants. Change-Id: Iea14abdb32709a4f5404a17874f9c925d29ba999 Reviewed-on: https://go-review.googlesource.com/55252Reviewed-by:
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Hiroshi Ioka authored
Also, fix comment. Change-Id: Ieb7ba21f34730dc51ab45a652d225e4145d4b861 Reviewed-on: https://go-review.googlesource.com/54870 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Hiroshi Ioka authored
Fixes #21414 Change-Id: Idff6e269ae32b33253067c9f32cac25256eb7f1c Reviewed-on: https://go-review.googlesource.com/55251Reviewed-by:
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Agniva De Sarker authored
The tests for error scenarios were done by manually checking error strings. Improved them by checking the actual error type instead of just the string. Printing the actual error in case of failure instead of a generic string. Also added a new scenario with both an invalid byte and an invalid length string to verify that the length is checked first before doing any computation. Change-Id: Ic2a19a6d6058912632d597590186ee2d8348cb45 Reviewed-on: https://go-review.googlesource.com/55256Reviewed-by:
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Justin Nuß authored
Errors returned by Reader contain the line where the Reader originally encountered the error. This can be suboptimal since that line does not always correspond with the line the current record/field started at. This can easily happen with LazyQuotes as seen in #19019, but also happens for example when a quoted fields has no closing quote and the parser hits EOF before it finds another quote. When this happens finding the erroneous field can be somewhat complicated and time consuming, and in most cases it would be better to report the line where the record started. This change updates Reader to keep track of the line on which a record begins and uses it for errors instead of the current line, making it easier to find errors. Although a user-visible change, this should have no impact on existing code, since most users don't explicitly work with the line in the error and probably already expect the new behaviour. Updates #19019 Change-Id: Ic9bc70fad2651c69435d614d537e7a9266819b05 Reviewed-on: https://go-review.googlesource.com/52830Reviewed-by:
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Hiroshi Ioka authored
Change-Id: I5c4f8dc1e174b3438ef4fb509fac78d6e1b292c9 Reviewed-on: https://go-review.googlesource.com/54791Reviewed-by:
Avelino <t@avelino.xxx> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Rob Pike authored
No semantic change, just clarifying a bit by choosing better words in a couple of places. Change-Id: I4496062ee7909baf83d4d22d25e13ef93b358b4b Reviewed-on: https://go-review.googlesource.com/55255Reviewed-by:
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Tobias Klauser authored
All the BSDs and Solaris support the utimensat syscall, but Darwin doesn't. Account for that by adding the //sys lines not to syscall_bsd.go but the individual OS's syscall_*.go files and implement utimensat on Darwin as just returning ENOSYS, such that UtimesNano will fall back to use utimes as it currently does unconditionally. This also adds the previously missing utimensat syscall number for FreeBSD and Dragonfly. Fixes #16480 Change-Id: I367454c6168eb1f7150b988fa16cf02abff42f34 Reviewed-on: https://go-review.googlesource.com/55130Reviewed-by:
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Kevin Burke authored
lookupName is only called in one location, and one of the return values is unused, so let's remove it. Change-Id: I35e22c7ec611e8eb349deb4f0561e212f7d9de0b Reviewed-on: https://go-review.googlesource.com/55232Reviewed-by:
Daniel Martí <mvdan@mvdan.cc> Reviewed-by:
Rob Pike <r@golang.org> Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
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Austin Clements authored
This reverts commit f612cd70. Reason for revert: We thought the original change had broken the linux/amd64 and linux/386 builders, but it turned out to be a problem with the build infrastructure, not the change. Change-Id: Ic3318a63464fcba8d845ac04494115a7ba620364 Reviewed-on: https://go-review.googlesource.com/55050 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Matthew Dempsky <mdempsky@google.com>
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Josh Bleecher Snyder authored
Invert the condition and continue, to remove indentation. Change-Id: Id62a5d9abc9a4df1193bcf15f95f70f2c2e2abac Reviewed-on: https://go-review.googlesource.com/55091 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Martin Möhrmann <moehrmann@google.com>
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Josh Bleecher Snyder authored
This generates better code. Masking B in the return statement should be unnecessary, but the compiler is understandably not yet clever enough to see that. Someday, it'd also be nice for the compiler to generate a CMOV for the saturation if statement. Change-Id: Ie1c157b21f5212610da1f3c7823a93816b3b61b9 Reviewed-on: https://go-review.googlesource.com/54656 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
Shrinks evacuate's machine code a little. Change-Id: I08874c92abdc7e621bc0737e22f2a6be31542cab Reviewed-on: https://go-review.googlesource.com/54652 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
Combine conditions into a single if statement. This is more readable. It should generate identical machine code, but it doesn't. The new code is shorter. Change-Id: I9bf52f8f288b0df97a2b9b4e4183f6ca74175e8a Reviewed-on: https://go-review.googlesource.com/54651 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
This reduces the wall time to run these benchmarks by about 30%. Change-Id: I494a93c93e5acb1514510d85f65796f62e1629a5 Reviewed-on: https://go-review.googlesource.com/54650 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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- 13 Aug, 2017 6 commits
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Austin Clements authored
Currently we only support finding symbols in the VDSO using the old DT_HASH. These days everything uses DT_GNU_HASH instead. To keep up with the times and future-proof against DT_HASH disappearing from the VDSO in the future, this commit adds support for DT_GNU_HASH and prefers it over DT_HASH. Tested by making sure it found a DT_GNU_HASH section and all of the expected symbols in it, and then disabling the DT_GNU_HASH path and making sure the old DT_HASH path still found all of the symbols. Fixes #19649. Change-Id: I508c8b35a019330d2c32f04f3833b69cb2686f13 Reviewed-on: https://go-review.googlesource.com/45511 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Audrey Lim authored
The ZIP format uses uint16 to contain the length of the file name and the length of the Extra section. This change verifies that the length of these fields fit in an uint16 prior to writing the ZIP file. If not, an error is returned. Fixes #17402 Change-Id: Ief9a864d2fe16b89ddb9917838283b801a2c58a4 Reviewed-on: https://go-review.googlesource.com/50250Reviewed-by:
Joe Tsai <thebrokentoaster@gmail.com> Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Martin Möhrmann authored
If needed cast the test table values to a higher bit size integer type instead of casting the result values of the tested function to a lower bit size integer type. Change-Id: Iaa79742b2b1d90c7c7eac324f54032ebea0b1b41 Reviewed-on: https://go-review.googlesource.com/55137Reviewed-by:
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Martin Möhrmann authored
Increases performance of FieldsFunc by recording the start and end of the fields in an array. The first 32 fields are saved in a pre-allocated array on the stack. This avoids the old behavior of iterating over the input string two times but uses more allocations when more than 32 fields are encountered. Additionally code for handling non-ASCII containing strings from Fields is removed and replaced by a call to the new faster FieldsFunc function. Overall this still leads to a slowdown for Fields on non-ASCII strings while speeding up Fields in general. name old time/op new time/op delta Fields/ASCII/16 116ns ± 5% 115ns ± 5% ~ (p=0.480 n=10+10) Fields/ASCII/256 765ns ± 1% 761ns ± 2% ~ (p=0.171 n=10+10) Fields/ASCII/4096 12.5µs ± 1% 12.7µs ± 1% +1.82% (p=0.000 n=10+10) Fields/ASCII/65536 226µs ± 1% 226µs ± 2% ~ (p=0.739 n=10+10) Fields/ASCII/1048576 5.12ms ± 1% 5.12ms ± 1% ~ (p=0.696 n=8+10) Fields/Mixed/16 172ns ± 1% 233ns ± 1% +35.90% (p=0.000 n=9+10) Fields/Mixed/256 1.18µs ± 2% 2.45µs ± 1% +107.47% (p=0.000 n=10+10) Fields/Mixed/4096 20.3µs ± 1% 43.1µs ± 2% +112.41% (p=0.000 n=10+10) Fields/Mixed/65536 364µs ± 1% 704µs ± 1% +93.56% (p=0.000 n=9+10) Fields/Mixed/1048576 7.07ms ± 2% 13.34ms ± 4% +88.83% (p=0.000 n=10+10) FieldsFunc/ASCII/16 274ns ± 1% 188ns ± 3% -31.44% (p=0.000 n=10+10) FieldsFunc/ASCII/256 3.69µs ± 1% 2.06µs ± 2% -44.26% (p=0.000 n=10+10) FieldsFunc/ASCII/4096 59.9µs ± 1% 35.3µs ± 2% -41.10% (p=0.000 n=10+10) FieldsFunc/ASCII/65536 958µs ± 1% 567µs ± 1% -40.82% (p=0.000 n=10+9) FieldsFunc/ASCII/1048576 16.3ms ± 2% 11.0ms ± 3% -32.52% (p=0.000 n=10+10) FieldsFunc/Mixed/16 309ns ± 1% 213ns ± 0% -30.98% (p=0.000 n=10+6) FieldsFunc/Mixed/256 3.83µs ± 1% 2.14µs ± 1% -44.01% (p=0.000 n=10+10) FieldsFunc/Mixed/4096 66.2µs ± 2% 37.8µs ± 1% -42.85% (p=0.000 n=10+10) FieldsFunc/Mixed/65536 1.09ms ± 1% 0.63ms ± 1% -42.73% (p=0.000 n=10+10) FieldsFunc/Mixed/1048576 18.6ms ± 3% 12.0ms ± 2% -35.50% (p=0.000 n=10+10) Fixes #17856 Fixes #19789 Change-Id: I9f5a560e534566fd81963651f342c8f44cfb0469 Reviewed-on: https://go-review.googlesource.com/42810Reviewed-by:
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Martin Möhrmann authored
If the value corresponding to the input string cannot be represented by an unsigned integer of the given size, err.Err = ErrRange and the returned value is the maximum magnitude unsigned integer of the appropriate bitSize. This is consistent with ParseInt's behavior and the documentation. Expand tests to test 32 bit test value tables with bitsize 32 set. These tests fail without the fix in this CL. Fixes #21278 Change-Id: I8aab39279ec3e31905fcbf582a916cbf6d9b95da Reviewed-on: https://go-review.googlesource.com/55134 Run-TryBot: Martin Möhrmann <moehrmann@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Joe Tsai authored
Use a simple []byte instead of bytes.Buffer to create a string. Use bytes.IndexByte instead of our own for loop. Change-Id: Ic4a1161d79017fd3af086a05c53d5f20a5f09326 Reviewed-on: https://go-review.googlesource.com/54752Reviewed-by:
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- 12 Aug, 2017 4 commits
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Agniva De Sarker authored
By replacing fmt.Sprintf with a simple string concat, we see pretty good improvements across the board on time and memory. name old time/op new time/op delta FormatPAXRecord 683ns ± 2% 210ns ± 5% -69.22% (p=0.000 n=10+10) name old alloc/op new alloc/op delta FormatPAXRecord 112B ± 0% 32B ± 0% -71.43% (p=0.000 n=10+10) name old allocs/op new allocs/op delta FormatPAXRecord 8.00 ± 0% 2.00 ± 0% -75.00% (p=0.000 n=10+10) Ran with - -cpu=1 -count=10 on an AMD64 i5-5200U CPU @ 2.20GHz Using the following benchmark: func BenchmarkFormatPAXRecord(b *testing.B) { for n := 0; n < b.N; n++ { formatPAXRecord("foo", "bar") } } Change-Id: I828ddbafad2e5d937f0cf5f777b512638344acfc Reviewed-on: https://go-review.googlesource.com/55210Reviewed-by: -
Joe Tsai authored
Rather than going through the complicated logic of writeHeader, implement a writeUSTARHeader that only knows about the USTAR format. This makes the logic much easier to reason about since you only need to be concerned about USTAR and not all the subtle differences between USTAR, PAX, and GNU. We seperate out the logic in writeUSTARHeader into templateV7Plus and writeRawHeader since the planned implementations of writePAXHeader and writeGNUHeader will use them. Change-Id: Ie75a54ac998420ece82686159ae6fa39f8b128e9 Reviewed-on: https://go-review.googlesource.com/54970Reviewed-by:
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Mark Wolfe authored
Change-Id: I27ff99aa7abb070f6ae79c8f964aa9bd6a83b89d Reviewed-on: https://go-review.googlesource.com/53730Reviewed-by:
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Emmanuel Odeke authored
Ensure that we can index maps whose key types are: * int * uint * int32 * uint32 * int64 * uint64 * uintptr Fixes #20439 Change-Id: I8fa96b14073c8af72786482ff4ffc3508064ea86 Reviewed-on: https://go-review.googlesource.com/43850 Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com> Run-TryBot: Rob Pike <r@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org>
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- 11 Aug, 2017 12 commits
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Elias Naur authored
The dieFromSignal runtime function attempts to forward crashing signals to a signal handler registered before the runtime was initialized, if any. However, on Darwin, a special signal handler trampoline is invoked, even for non-Go signal handlers. Clear the crashing signal's handlingSig entry to ensure sigtramp forwards the signal. Fixes the darwin/386 builder. Updates #20392 Updates #19389 Change-Id: I441a3d30c672cdb21ed6d8f1e1322d7c0e5b9669 Reviewed-on: https://go-review.googlesource.com/55032 Run-TryBot: Elias Naur <elias.naur@gmail.com> Reviewed-by:
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Hiroshi Ioka authored
According to http://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_key_create.html, pthread_key_create return an error number which is greater than or equal to 0. I don't know the scenario that pthread_setspecific would fail, but also don't know the future. Add some error handlings just in case. Change-Id: I0774b79ef658d67e300f4a9aab1f2e3879acc7ee Reviewed-on: https://go-review.googlesource.com/54811Reviewed-by:
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Cholerae Hu authored
Intrinsic enabled on all architectures, runtime asm implementation removed on all architectures. Fixes #21258 Change-Id: I2cb86d460b497c2f287a5b3df5c37fdb231c23a7 Reviewed-on: https://go-review.googlesource.com/53411Reviewed-by:
Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by:
David Chase <drchase@google.com>
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Alberto Donizetti authored
$ go tool -h says: For more about each tool command, see 'go tool command -h'. but it was suggested to change the suggestion to say: see 'go doc command' In #18313. That would work for every tool except dist, which has no doc.go. This change adds a doc.go file to cmd/dist. Updates #18313 Change-Id: If67a21934b87647a69359d9c14d8de3775c587b7 Reviewed-on: https://go-review.googlesource.com/54351 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Austin Clements authored
Currently all trace slices get shifted to start at time 0. This makes it very difficult to find specific points in time unless they fall in the first slice. For example, right now when you click "View trace (6.005646218s-8.155419698s)" on the trace tool's main page, the trace view puts the first event in that slice at time 0. If you're looking for something that happened at time 7s, you have to look at time 0.9943537s in the trace view. And if you want to subtract times taken from different slices, you have to figure out what those time really correspond to. Fix this by telling the trace viewer not to shift the times when it imports the trace. In the above example, this makes the view of that second trace slice start at time 6.005646218s, so you don't have to do any gymnastics to find or calculate times in later slices. Change-Id: I04e0afda60f5573fdd8ad96238c24013297ef263 Reviewed-on: https://go-review.googlesource.com/54633Reviewed-by:
Hyang-Ah Hana Kim <hyangah@gmail.com>
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Austin Clements authored
This updates the HTML served for the trace viewer to follow the latest revision of the example from the upstream tracing project. The main thing this adds is CSS for the trace viewer (which was actually in the example at the originally referenced revision, so I'm not sure why it got dropped). In particular, this expands the trace viewer to use the entire browser client area, which fixes several problems with the current page: 1. The details pane gets cut off at a strange place and can get a scroll bar even if there's plenty of room below it on the page. This fixes the bottom of the details pane to the bottom of the window. 2. If the track view is very tall (lots of procs), there's no way to view the top tracks and the details pane at the same time. This fixes this problem by limiting the height of the track view to something less than the height of the window so it gets a scroll bar of its own if necessary. 3. Dragging the divider between the track pane and the details pane actually moves the bottom of the details pane without moving the divider. Fixing the height of the trace viewer fixes this problem. Change-Id: Ia811e72a7413417ca21c45e932c9db2724974633 Reviewed-on: https://go-review.googlesource.com/54632 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Gerrit Code Review authored
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Carlos Eduardo Seo authored
_main has an early check to verify if a binary is statically or dynamically linked that depends on R0 being zero. R0 is not guaranteed to be zero at that point and this was breaking Go on Alpine for ppc64le. Change-Id: I4a1059ff7fd3db6fc489e7dcfe631c1814dd965b Reviewed-on: https://go-review.googlesource.com/54730 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by:
Lynn Boger <laboger@linux.vnet.ibm.com>
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Tobias Klauser authored
The gofmt bug in question seems to be fixed (at least gofmt doesn't complain), so reenable the commented-out ... test. Change-Id: Icbfe0511160210557894ec8eb9b206aa6133d486 Reviewed-on: https://go-review.googlesource.com/55030 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Lynn Boger authored
This implements trunc, floor, and ceil in the math package as intrinsics on ppc64x. Significant improvement mainly due to avoiding call overhead of args and return value. BenchmarkCeil-16 5.95 0.69 -88.40% BenchmarkFloor-16 5.95 0.69 -88.40% BenchmarkTrunc-16 5.82 0.69 -88.14% Updates #21390 Change-Id: I951e182694f6e0c431da79c577272b81fb0ebad0 Reviewed-on: https://go-review.googlesource.com/54654 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by:
Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> Reviewed-by:
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Austin Clements authored
Change-Id: I85df2745af666b533f4f6f1d06f7c8e137590b5b
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Carlos Eduardo Seo authored
This change adds a better implementation in asm for AddMulVVW and mulAddVWW for ppc64x, with speedups up to 1.54x. benchmark old ns/op new ns/op delta BenchmarkAddMulVVW/1-8 6.58 6.29 -4.41% BenchmarkAddMulVVW/2-8 7.43 7.25 -2.42% BenchmarkAddMulVVW/3-8 8.95 8.15 -8.94% BenchmarkAddMulVVW/4-8 10.1 9.37 -7.23% BenchmarkAddMulVVW/5-8 12.0 10.7 -10.83% BenchmarkAddMulVVW/10-8 22.1 20.1 -9.05% BenchmarkAddMulVVW/100-8 211 154 -27.01% BenchmarkAddMulVVW/1000-8 2046 1450 -29.13% BenchmarkAddMulVVW/10000-8 20407 14793 -27.51% BenchmarkAddMulVVW/100000-8 223857 145548 -34.98% benchmark old MB/s new MB/s speedup BenchmarkAddMulVVW/1-8 9719.88 10175.79 1.05x BenchmarkAddMulVVW/2-8 17233.97 17657.54 1.02x BenchmarkAddMulVVW/3-8 21446.05 23550.49 1.10x BenchmarkAddMulVVW/4-8 25375.70 27334.33 1.08x BenchmarkAddMulVVW/5-8 26650.52 30029.34 1.13x BenchmarkAddMulVVW/10-8 28984.29 31833.68 1.10x BenchmarkAddMulVVW/100-8 30249.41 41531.69 1.37x BenchmarkAddMulVVW/1000-8 31273.35 44108.54 1.41x BenchmarkAddMulVVW/10000-8 31360.47 43263.54 1.38x BenchmarkAddMulVVW/100000-8 28589.58 43971.66 1.54x Change-Id: I8a8105d4da3592afdef3125757a99f378a0254bb Reviewed-on: https://go-review.googlesource.com/53931 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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