mirror of https://github.com/golang/go.git
b08a9b7ecc
Use the new softfloat support in the compiler, originally added for softfloat on MIPS. This support is portable, so we can just use it for softfloat on ARM. In the old softfloat support on ARM, the compiler generates floating point instructions, then the assembler inserts calls to _sfloat before FP instructions. _sfloat decodes the following FP instructions and simulates them. In the new scheme, the compiler generates runtime calls to do FP operations at a higher level. It doesn't generate FP instructions, and therefore the assembler won't insert _sfloat calls, i.e. the old mechanism is automatically suppressed. The old method may be still be triggered with assembly code using FP instructions. In the standard library, the only occurance is math/sqrt_arm.s, which is rewritten to call to the Go implementation instead. Some significant speedups for code using floating points: name old time/op new time/op delta BinaryTree17-4 37.1s ± 2% 37.3s ± 1% ~ (p=0.105 n=10+10) Fannkuch11-4 13.0s ± 0% 13.1s ± 0% +0.46% (p=0.000 n=10+10) FmtFprintfEmpty-4 700ns ± 4% 734ns ± 6% +4.84% (p=0.009 n=10+10) FmtFprintfString-4 1.22µs ± 3% 1.22µs ± 4% ~ (p=0.897 n=10+10) FmtFprintfInt-4 1.27µs ± 2% 1.30µs ± 1% +1.91% (p=0.001 n=10+9) FmtFprintfIntInt-4 1.83µs ± 2% 1.81µs ± 3% ~ (p=0.149 n=10+10) FmtFprintfPrefixedInt-4 1.80µs ± 3% 1.81µs ± 2% ~ (p=0.421 n=10+8) FmtFprintfFloat-4 6.89µs ± 3% 3.59µs ± 2% -47.93% (p=0.000 n=10+10) FmtManyArgs-4 6.39µs ± 1% 6.09µs ± 1% -4.61% (p=0.000 n=10+9) GobDecode-4 109ms ± 2% 81ms ± 2% -25.99% (p=0.000 n=9+10) GobEncode-4 109ms ± 2% 76ms ± 2% -29.88% (p=0.000 n=10+9) Gzip-4 3.61s ± 1% 3.59s ± 1% ~ (p=0.247 n=10+10) Gunzip-4 449ms ± 4% 450ms ± 1% ~ (p=0.230 n=10+7) HTTPClientServer-4 1.55ms ± 3% 1.53ms ± 2% ~ (p=0.400 n=9+10) JSONEncode-4 356ms ± 1% 183ms ± 1% -48.73% (p=0.000 n=10+10) JSONDecode-4 1.12s ± 2% 0.87s ± 1% -21.88% (p=0.000 n=10+10) Mandelbrot200-4 5.49s ± 1% 2.55s ± 1% -53.45% (p=0.000 n=9+10) GoParse-4 49.6ms ± 2% 47.5ms ± 1% -4.08% (p=0.000 n=10+9) RegexpMatchEasy0_32-4 1.13µs ± 4% 1.20µs ± 4% +6.42% (p=0.000 n=10+10) RegexpMatchEasy0_1K-4 4.41µs ± 2% 4.44µs ± 2% ~ (p=0.128 n=10+10) RegexpMatchEasy1_32-4 1.15µs ± 5% 1.20µs ± 5% +4.85% (p=0.002 n=10+10) RegexpMatchEasy1_1K-4 6.21µs ± 2% 6.37µs ± 4% +2.62% (p=0.001 n=9+10) RegexpMatchMedium_32-4 1.58µs ± 5% 1.65µs ± 3% +4.85% (p=0.000 n=10+10) RegexpMatchMedium_1K-4 341µs ± 3% 351µs ± 7% ~ (p=0.573 n=8+10) RegexpMatchHard_32-4 21.4µs ± 3% 21.5µs ± 5% ~ (p=0.931 n=9+9) RegexpMatchHard_1K-4 626µs ± 2% 626µs ± 1% ~ (p=0.645 n=8+8) Revcomp-4 46.4ms ± 2% 47.4ms ± 2% +2.07% (p=0.000 n=10+10) Template-4 1.31s ± 3% 1.23s ± 4% -6.13% (p=0.000 n=10+10) TimeParse-4 4.49µs ± 1% 4.41µs ± 2% -1.81% (p=0.000 n=10+9) TimeFormat-4 9.31µs ± 1% 9.32µs ± 2% ~ (p=0.561 n=9+9) Change-Id: Iaeeff6c9a09c1b2c064d06e09dd88101dc02bfa4 Reviewed-on: https://go-review.googlesource.com/106735 Reviewed-by: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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| .. | ||
| alias3.dir | ||
| bench | ||
| chan | ||
| closure3.dir | ||
| codegen | ||
| ddd2.dir | ||
| dwarf | ||
| fixedbugs | ||
| import2.dir | ||
| import4.dir | ||
| interface | ||
| intrinsic.dir | ||
| ken | ||
| linkname.dir | ||
| method4.dir | ||
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| safe | ||
| stress | ||
| syntax | ||
| uintptrescapes.dir | ||
| 64bit.go | ||
| 235.go | ||
| README.md | ||
| alg.go | ||
| alias.go | ||
| alias1.go | ||
| alias2.go | ||
| alias3.go | ||
| align.go | ||
| append.go | ||
| append1.go | ||
| args.go | ||
| armimm.go | ||
| assign.go | ||
| assign1.go | ||
| atomicload.go | ||
| bigalg.go | ||
| bigmap.go | ||
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| checkbce.go | ||
| clearfat.go | ||
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| closure.go | ||
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| cmp.go | ||
| cmp6.go | ||
| cmplx.go | ||
| cmplxdivide.c | ||
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| convlit.go | ||
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| copy.go | ||
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| crlf.go | ||
| ddd.go | ||
| ddd1.go | ||
| ddd2.go | ||
| decl.go | ||
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| defer.go | ||
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| deferprint.go | ||
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| devirt.go | ||
| divide.go | ||
| divmod.go | ||
| empty.go | ||
| env.go | ||
| eof.go | ||
| eof1.go | ||
| errchk | ||
| escape.go | ||
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| escape_because.go | ||
| escape_calls.go | ||
| escape_closure.go | ||
| escape_field.go | ||
| escape_iface.go | ||
| escape_indir.go | ||
| escape_level.go | ||
| escape_map.go | ||
| escape_param.go | ||
| escape_slice.go | ||
| escape_struct_param1.go | ||
| escape_struct_param2.go | ||
| escape_struct_return.go | ||
| fibo.go | ||
| finprofiled.go | ||
| float_lit.go | ||
| float_lit2.go | ||
| float_lit3.go | ||
| floatcmp.go | ||
| for.go | ||
| func.go | ||
| func1.go | ||
| func2.go | ||
| func3.go | ||
| func4.go | ||
| func5.go | ||
| func6.go | ||
| func7.go | ||
| func8.go | ||
| funcdup.go | ||
| funcdup2.go | ||
| gc.go | ||
| gc1.go | ||
| gc2.go | ||
| gcstring.go | ||
| goprint.go | ||
| goprint.out | ||
| goto.go | ||
| heapsampling.go | ||
| helloworld.go | ||
| helloworld.out | ||
| if.go | ||
| import.go | ||
| import1.go | ||
| import2.go | ||
| import4.go | ||
| import5.go | ||
| import6.go | ||
| index.go | ||
| index0.go | ||
| index1.go | ||
| index2.go | ||
| indirect.go | ||
| indirect1.go | ||
| init.go | ||
| init1.go | ||
| initcomma.go | ||
| initialize.go | ||
| initializerr.go | ||
| initloop.go | ||
| inline.go | ||
| inline_caller.go | ||
| inline_callers.go | ||
| inline_literal.go | ||
| inline_variadic.go | ||
| int_lit.go | ||
| intcvt.go | ||
| intrinsic.go | ||
| intrinsic_atomic.go | ||
| iota.go | ||
| label.go | ||
| label1.go | ||
| linkmain.go | ||
| linkmain_run.go | ||
| linkname.go | ||
| linkobj.go | ||
| linkx.go | ||
| linkx_run.go | ||
| literal.go | ||
| live.go | ||
| live1.go | ||
| live2.go | ||
| live_syscall.go | ||
| locklinear.go | ||
| loopbce.go | ||
| makechan.go | ||
| makemap.go | ||
| makenew.go | ||
| mallocfin.go | ||
| map.go | ||
| map1.go | ||
| maplinear.go | ||
| mergemul.go | ||
| method.go | ||
| method1.go | ||
| method2.go | ||
| method3.go | ||
| method4.go | ||
| method5.go | ||
| method6.go | ||
| method7.go | ||
| named.go | ||
| named1.go | ||
| nil.go | ||
| nilcheck.go | ||
| nilptr.go | ||
| nilptr2.go | ||
| nilptr3.go | ||
| nilptr4.go | ||
| nosplit.go | ||
| notinheap.go | ||
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| nowritebarrier.go | ||
| nul1.go | ||
| opt_branchlikely.go | ||
| parentype.go | ||
| peano.go | ||
| phiopt.go | ||
| print.go | ||
| print.out | ||
| printbig.go | ||
| printbig.out | ||
| prove.go | ||
| range.go | ||
| recover.go | ||
| recover1.go | ||
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| reflectmethod1.go | ||
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| reflectmethod4.go | ||
| rename.go | ||
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| retjmp.go | ||
| return.go | ||
| rotate.go | ||
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| run.go | ||
| rune.go | ||
| runtime.go | ||
| shift1.go | ||
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| sieve.go | ||
| sigchld.go | ||
| sigchld.out | ||
| simassign.go | ||
| sinit.go | ||
| sinit_run.go | ||
| sizeof.go | ||
| slice3.go | ||
| slice3err.go | ||
| slicecap.go | ||
| sliceopt.go | ||
| solitaire.go | ||
| stack.go | ||
| strength.go | ||
| string_lit.go | ||
| stringrange.go | ||
| struct0.go | ||
| switch.go | ||
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| switch7.go | ||
| tinyfin.go | ||
| torture.go | ||
| turing.go | ||
| typecheck.go | ||
| typecheckloop.go | ||
| typeswitch.go | ||
| typeswitch1.go | ||
| typeswitch2.go | ||
| typeswitch3.go | ||
| uintptrescapes.go | ||
| uintptrescapes2.go | ||
| undef.go | ||
| utf.go | ||
| varerr.go | ||
| varinit.go | ||
| writebarrier.go | ||
| zerodivide.go | ||
README.md
The test directory contains tests of the Go tool chain and runtime. It includes black box tests, regression tests, and error output tests. They are run as part of all.bash.
To run just these tests, execute:
../bin/go run run.go
Standard library tests should be written as regular Go tests in the appropriate package.
The tool chain and runtime also have regular Go tests in their packages. The main reasons to add a new test to this directory are:
- it is most naturally expressed using the test runner; or
- it is also applicable to
gccgoand other Go tool chains.