golang.go

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Files

Keith Randall 653a4bd8d4 cmd/compile: optimize loads from readonly globals into constants

Instead of
   MOVB go.string."foo"(SB), AX
do
   MOVB $102, AX

When we know the global we're loading from is readonly, we can
do that read at compile time.

I've made this arch-dependent mostly because the cases where this
happens often are memory->memory moves, and those don't get
decomposed until lowering.

Did amd64/386/arm/arm64. Other architectures could follow.

Update #26498

Change-Id: I41b1dc831b2cd0a52dac9b97f4f4457888a46389
Reviewed-on: https://go-review.googlesource.com/c/141118
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>

2018-10-14 02:54:40 +00:00

alias3.dir

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bench

test/bench/garbage: update Benchmarks Game URL to new page

2018-09-24 17:11:42 +00:00

chan

all: fix article typos

2017-09-15 02:39:16 +00:00

closure3.dir

all: fix a bunch of misspellings

2018-10-06 15:40:03 +00:00

codegen

cmd/compile: optimize loads from readonly globals into constants

2018-10-14 02:54:40 +00:00

ddd2.dir

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dwarf

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fixedbugs

cmd/compile: allow VARDEF at top level

2018-10-06 16:28:04 +00:00

import2.dir

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import4.dir

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interface

cmd/compile: more error position tests for the typechecker

2017-04-24 12:37:49 +00:00

intrinsic.dir

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ken

test: remove rundircmpout and cmpout actions

2018-05-31 17:36:45 +00:00

linkname.dir

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method4.dir

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retjmp.dir

cmd/asm: fix assembling return jump

2018-03-01 21:11:16 +00:00

stress

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syntax

cmd/compile: better handling of incorrect type switches

2018-04-03 05:34:20 +00:00

uintptrescapes.dir

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64bit.go

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235.go

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alg.go

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alias1.go

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alias2.go

cmd/compile: cleanup method symbol creation

2018-04-05 22:01:17 +00:00

alias3.go

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alias.go

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align.go

test: check that unaligned load-add opcodes work.

2018-04-09 18:57:37 +00:00

append1.go

cmd/compile: optimize append(x, make([]T, y)...) slice extension

2018-05-06 04:28:23 +00:00

append.go

cmd/compile: optimize append(x, make([]T, y)...) slice extension

2018-05-06 04:28:23 +00:00

args.go

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armimm.go

cmd/internal/obj: continue to optimize ARM's constant pool

2017-05-11 13:53:54 +00:00

assign1.go

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assign.go

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atomicload.go

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bigalg.go

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bigmap.go

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blank1.go

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blank.go

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bom.go

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bombad.go

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bounds.go

test: gofmt bounds.go

2018-05-29 02:39:16 +00:00

chancap.go

runtime: use sparse mappings for the heap

2018-02-15 21:12:23 +00:00

chanlinear.go

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char_lit1.go

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char_lit.go

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checkbce.go

test: restore binary.BigEndian use in checkbce

2018-09-24 21:20:51 +00:00

clearfat.go

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closedchan.go

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closure1.go

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closure2.go

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closure3.go

all: fix a bunch of misspellings

2018-10-06 15:40:03 +00:00

closure4.go

cmd/compile/internal/gc: add nil check for closure call on wasm

2018-08-14 09:19:38 +00:00

closure.go

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cmp6.go

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cmp.go

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cmplx.go

cmd/compile: more error position tests for the typechecker

2017-04-24 12:37:49 +00:00

cmplxdivide1.go

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cmplxdivide.c

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cmplxdivide.go

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complit1.go

cmd/compile: more error position tests for the typechecker

2017-04-24 12:37:49 +00:00

complit.go

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compos.go

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const1.go

cmd/compile: fix constant pointer comparison failure

2018-04-09 23:19:45 +00:00

const2.go

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const3.go

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const4.go

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const5.go

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const6.go

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const.go

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convert1.go

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convert2.go

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convert3.go

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convert.go

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convlit1.go

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convlit.go

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convT2X.go

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copy1.go

cmd/compile: more error position tests for the typechecker

2017-04-24 12:37:49 +00:00

copy.go

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crlf.go

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ddd1.go

test: reenable ... test

2017-08-11 17:41:17 +00:00

ddd2.go

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ddd.go

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decl.go

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declbad.go

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defer.go

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deferfin.go

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deferprint.go

test: remove rundircmpout and cmpout actions

2018-05-31 17:36:45 +00:00

deferprint.out

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devirt.go

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divide.go

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divmod.go

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empty.go

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env.go

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eof1.go

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eof.go

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escape2.go

cmd/compile/internal/gc: unify self-assignment checks in esc.go

2018-09-20 09:46:11 +00:00

escape2n.go

cmd/compile/internal/gc: unify self-assignment checks in esc.go

2018-09-20 09:46:11 +00:00

escape3.go

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escape4.go

cmd/compile: fix panic-okay-to-inline change; adjust tests

2018-06-06 20:35:23 +00:00

escape5.go

cmd/compile: in escape analysis, use element type for OIND of slice

2018-04-18 02:59:37 +00:00

escape_array.go

cmd/compile: print accurate escape reason for non-const-length slices

2018-03-28 16:56:03 +00:00

escape_because.go

test: remove go:noinline from escape_because.go

2018-09-05 10:45:58 +00:00

escape_calls.go

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escape_closure.go

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escape_field.go

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escape_iface.go

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escape_indir.go

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escape_level.go

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escape_map.go

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escape_param.go

cmd/compile/internal/gc: fix mayAffectMemory in esc.go

2018-09-05 14:16:25 +00:00

escape_slice.go

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escape_struct_param1.go

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escape_struct_param2.go

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escape_struct_return.go

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escape.go

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fibo.go

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finprofiled.go

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float_lit2.go

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float_lit3.go

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float_lit.go

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floatcmp.go

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for.go

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func1.go

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func2.go

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func3.go

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func4.go

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func5.go

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func6.go

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func7.go

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func8.go

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func.go

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funcdup2.go

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funcdup.go

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gc1.go

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gc2.go

all: skip unsupported tests for js/wasm

2018-04-30 19:39:18 +00:00

gc.go

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gcgort.go

test: fast GC+concurrency+types verification

2018-05-08 21:15:48 +00:00

gcstring.go

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goprint.go

test: remove rundircmpout and cmpout actions

2018-05-31 17:36:45 +00:00

goprint.out

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goto.go

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heapsampling.go

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helloworld.go

test: remove rundircmpout and cmpout actions

2018-05-31 17:36:45 +00:00

helloworld.out

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if.go

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import1.go

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import2.go

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import4.go

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import5.go

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import6.go

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import.go

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index0.go

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index1.go

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index2.go

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index.go

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indirect1.go

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indirect.go

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init1.go

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init.go

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initcomma.go

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initialize.go

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initializerr.go

cmd/compile: more error position tests for the typechecker

2017-04-24 12:37:49 +00:00

initloop.go

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inline_big.go

cmd/compile: set stricter inlining threshold in large functions

2018-07-24 16:11:08 +00:00

inline_caller.go

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inline_callers.go

test: make inline_callers.go test not inline the runtime

2017-11-22 00:52:54 +00:00

inline_literal.go

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inline_math_bits_rotate.go

cmd/compile: make math/bits.RotateLeft* an intrinsic on amd64

2018-08-30 22:48:28 +00:00

inline_variadic.go

cmd/compile: enable inlining variadic functions

2018-03-13 20:34:03 +00:00

inline.go

cmd/compile: inline closures with captures

2017-11-05 04:18:05 +00:00

int_lit.go

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intcvt.go

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intrinsic_atomic.go

cmd/compile: intrinsify atomics on MIPS64

2017-10-10 19:43:38 +00:00

intrinsic.go

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iota.go

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label1.go

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label.go

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linkmain_run.go

all: skip unsupported tests for js/wasm

2018-04-30 19:39:18 +00:00

linkmain.go

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linkname.go

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linkobj.go

all: skip unsupported tests for js/wasm

2018-04-30 19:39:18 +00:00

linkx_run.go

all: skip unsupported tests for js/wasm

2018-04-30 19:39:18 +00:00

linkx.go

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literal.go

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live1.go

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live2.go

cmd/compile,runtime: remove ambiguously live logic

2018-10-03 19:54:16 +00:00

live_syscall.go

cmd/compile,runtime: remove ambiguously live logic

2018-10-03 19:54:16 +00:00

live.go

cmd/compile,runtime: remove ambiguously live logic

2018-10-03 19:54:16 +00:00

locklinear.go

test: skip locklinear's lockmany test for now

2018-04-05 10:53:40 +00:00

loopbce.go

cmd/compile: ensure that loop condition is detected correctly

2018-07-09 18:23:39 +00:00

makechan.go

cmd/compile: generate makechan calls with int arguments

2017-08-15 05:54:24 +00:00

makemap.go

test: check that size argument errors are emitted at call site

2018-03-14 08:36:15 +00:00

makenew.go

cmd/compile: more error position tests for the typechecker

2017-04-24 12:37:49 +00:00

mallocfin.go

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map1.go

cmd/compile: more error position tests for the typechecker

2017-04-24 12:37:49 +00:00

map.go

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mapclear.go

cmd/compile: optimize map-clearing range idiom

2018-05-08 21:15:16 +00:00

maplinear.go

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mergemul.go

cmd/compile: combine x*n - y*n into (x-y)*n

2017-09-03 14:29:38 +00:00

method1.go

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method2.go

cmd/compile: add two error position tests for the typechecker

2017-10-12 20:50:20 +00:00

method3.go

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method4.go

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method5.go

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method6.go

cmd/compile: add two error position tests for the typechecker

2017-10-12 20:50:20 +00:00

method7.go

cmd/compile: fix method expressions with anonymous receivers

2018-04-06 15:39:11 +00:00

method.go

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named1.go

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named.go

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nil.go

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nilcheck.go

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nilptr2.go

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nilptr3_wasm.go

test: fix nilptr3 check for wasm

2018-09-05 09:57:32 +00:00

nilptr3.go

cmd/compile: remove unnecessary nil-check

2018-09-04 17:44:14 +00:00

nilptr4.go

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nilptr.go

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nosplit.go

test: skip some tests on noopt builder

2018-09-24 20:56:48 +00:00

notinheap2.go

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notinheap3.go

cmd/compile: []T where T is go:notinheap does not need write barriers

2017-11-06 21:07:57 +00:00

notinheap.go

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nowritebarrier.go

cmd/compile: improve coverage of nowritebarrierrec check

2017-10-29 19:36:44 +00:00

nul1.go

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opt_branchlikely.go

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parentype.go

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peano.go

all: skip unsupported tests for js/wasm

2018-04-30 19:39:18 +00:00

phiopt.go

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print.go

test: remove rundircmpout and cmpout actions

2018-05-31 17:36:45 +00:00

print.out

cmd/compile: fix print/println when input is uint

2017-09-26 04:08:38 +00:00

printbig.go

test: remove rundircmpout and cmpout actions

2018-05-31 17:36:45 +00:00

printbig.out

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prove.go

cmd/compile: in prove, fix fence-post implications for unsigned domain

2018-08-31 08:54:38 +00:00

range.go

cmd/compile: improve single blank variable handling in walkrange

2017-09-12 05:50:54 +00:00

README.md

test: use the version of Go used to run run.go

2018-03-03 19:52:00 +00:00

recover1.go

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recover2.go

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recover3.go

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recover4.go

all: use Fatalf instead of Fatal if format is given

2018-01-10 01:35:45 +00:00

recover5.go

cmd/compile: more error position tests for the typechecker

2017-04-24 12:37:49 +00:00

recover.go

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reflectmethod1.go

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reflectmethod2.go

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reflectmethod3.go

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reflectmethod4.go

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rename1.go

cmd/compile: avoid duplicate cast error

2017-08-22 13:44:35 +00:00

rename.go

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reorder2.go

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reorder.go

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retjmp.go

cmd/asm: fix assembling return jump

2018-03-01 21:11:16 +00:00

return.go

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rotate0.go

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rotate1.go

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rotate2.go

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rotate3.go

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rotate.go

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run.go

all: fix a bunch of misspellings

2018-10-08 03:12:03 +00:00

rune.go

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runtime.go

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shift1.go

cmd/compile: permit indices of certain non-constant shifts

2017-12-01 20:39:50 +00:00

shift2.go

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sieve.go

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sigchld.go

test: remove rundircmpout and cmpout actions

2018-05-31 17:36:45 +00:00

sigchld.out

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simassign.go

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sinit_run.go

all: skip unsupported tests for js/wasm

2018-04-30 19:39:18 +00:00

sinit.go

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sizeof.go

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slice3.go

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slice3err.go

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slicecap.go

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sliceopt.go

cmd/compile: make prove pass use unsatisfiability

2018-03-08 22:25:25 +00:00

solitaire.go

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stack.go

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stackobj2.go

test: stress test for stack objects

2018-10-03 19:54:29 +00:00

stackobj3.go

cmd/compile,runtime: remove ambiguously live logic

2018-10-03 19:54:16 +00:00

stackobj.go

cmd/compile,runtime: remove ambiguously live logic

2018-10-03 19:54:16 +00:00

strcopy.go

test: add test to verify that string copies don't get optimized away

2018-06-12 19:10:34 +00:00

strength.go

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string_lit.go

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stringrange.go

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struct0.go

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switch2.go

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switch3.go

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switch4.go

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switch5.go

fmt: fix incorrect format of whole-number floats when using %#v

2018-08-28 20:15:15 +00:00

switch6.go

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switch7.go

cmd/compile: make duplicate expr cases readable

2017-05-19 18:11:51 +00:00

switch.go

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tinyfin.go

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torture.go

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turing.go

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typecheck.go

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typecheckloop.go

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typeswitch1.go

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typeswitch2.go

test: fix spelling of caught be the compiler to caught by the compiler

2018-10-04 00:49:49 +00:00

typeswitch3.go

test: fix spelling of caught be the compiler to caught by the compiler

2018-10-04 00:49:49 +00:00

typeswitch.go

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uintptrescapes2.go

cmd/compile,runtime: remove ambiguously live logic

2018-10-03 19:54:16 +00:00

uintptrescapes.go

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undef.go

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unsafereject1.go

test: restore tests for the reject unsafe code option

2018-08-22 17:54:09 +00:00

unsafereject2.go

test: restore tests for the reject unsafe code option

2018-08-22 17:54:09 +00:00

utf.go

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varerr.go

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varinit.go

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writebarrier.go

cmd/compile: don't use statictmps for SSA-able composite literals

2017-05-11 18:28:40 +00:00

zerodivide.go

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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 gccgo and other Go tool chains.