Dave Cheney 7b36acc4ac cmd/5g: avoid temporary during constant binary op ... This CL is an attempt to backport the abop code generation from 6g. This improves the generation of the range offset if the increment can be encoded directly via Operand2 shift encoding. 0023 (/home/dfc/src/range.go:7) BGE ,29(APC) 0024 (/home/dfc/src/range.go:7) MOVW 0(R3),R5 0025 (/home/dfc/src/range.go:7) MOVW $4,R1 0026 (/home/dfc/src/range.go:7) ADD R1,R3,R3 0027 (/home/dfc/src/range.go:8) ADD R5,R4,R4 0028 (/home/dfc/src/range.go:7) B ,17(APC) becomes 0023 (/home/dfc/src/range.go:7) BGE ,28(APC) 0024 (/home/dfc/src/range.go:7) MOVW 0(R3),R0 0025 (/home/dfc/src/range.go:7) ADD $4,R3,R3 0026 (/home/dfc/src/range.go:8) ADD R0,R4,R4 0027 (/home/dfc/src/range.go:7) B ,17(APC) Benchmarks are unimpressive dfc@qnap:~/go/test/bench/go1$ ~/go/misc/benchcmp {old,new}.txt benchmark old ns/op new ns/op delta BenchmarkBinaryTree17 2147483647 2147483647 +0.93% BenchmarkFannkuch11 2147483647 2147483647 -2.52% BenchmarkGobDecode 196135200 195842000 -0.15% BenchmarkGobEncode 78581650 76734450 -2.35% BenchmarkGzip 2147483647 2147483647 -0.47% BenchmarkGunzip 1087243000 1070254000 -1.56% BenchmarkJSONEncode 1107558000 1146077000 +3.48% BenchmarkJSONDecode 2147483647 2147483647 -0.07% BenchmarkMandelbrot200 2147483647 2147483647 -0.77% BenchmarkParse 74328550 71653400 -3.60% BenchmarkRevcomp 111123900 109325950 -1.62% BenchmarkTemplate 2147483647 2147483647 -0.82% benchmark old MB/s new MB/s speedup BenchmarkGobDecode 3.91 3.92 1.00x BenchmarkGobEncode 9.77 10.00 1.02x BenchmarkGzip 3.65 3.66 1.00x BenchmarkGunzip 17.85 18.13 1.02x BenchmarkJSONEncode 1.75 1.69 0.97x BenchmarkJSONDecode 0.83 0.83 1.00x BenchmarkParse 0.78 0.81 1.04x BenchmarkRevcomp 22.87 23.25 1.02x BenchmarkTemplate 0.84 0.85 1.01x R=remyoudompheng, minux.ma, rsc CC=golang-dev https://golang.org/cl/6564067		2012-10-02 08:12:39 +10:00
..
5a	5a, 5l, math: Add support for ABSD, ABSF floating point instructions.	2012-08-03 16:15:11 -04:00
5c	cmd/5c: fix dataflag annotation	2012-09-25 14:42:44 +08:00
5g	cmd/5g: avoid temporary during constant binary op	2012-10-02 08:12:39 +10:00
5l	cmd/ld: prepare for 64-bit ints	2012-09-24 14:59:09 -04:00
6a	cmd/6a, cmd/6l: add support for AES-NI instrutions and PSHUFD	2012-09-27 01:53:08 +08:00
6c	cmd/{5g,6g,8g,6c}: remove unused macro, use %E to print etype.	2012-09-24 23:44:00 +02:00
6g	cmd/[568]g: header cleanup.	2012-09-27 08:34:00 +02:00
6l	cmd/6a, cmd/6l: add support for AES-NI instrutions and PSHUFD	2012-09-27 01:53:08 +08:00
8a	cmd/6l, cmd/8l, cmd/5l: add AUNDEF instruction	2012-05-30 16:47:56 -04:00
8c	cmd/8c: better fix for 64-bit register smash	2012-05-24 23:36:26 -04:00
8g	cmd/[568]g: header cleanup.	2012-09-27 08:34:00 +02:00
8l	cmd/ld: prepare for 64-bit ints	2012-09-24 14:59:09 -04:00
addr2line	runtime/pprof: support OS X CPU profiling	2012-02-28 16:18:24 -05:00
api	cmd/api: delete redundant text from deletion message	2012-09-27 15:39:56 +10:00
cc	cmd/cc: allow to call nested packages from within C code	2012-08-04 16:11:53 +04:00
cgo	build: make int 64 bits on amd64	2012-09-24 20:57:01 -04:00
cov	cmd: update formatting of usage messages	2012-03-05 14:23:00 +11:00
dist	cmd/dist: new version for string for development branch	2012-09-24 21:35:20 -04:00
fix	cmd/fix: add rules for net/http -> net/http/httputil renames	2012-03-12 13:25:48 -07:00
gc	cmd/gc: Missing break in esc switch.	2012-10-01 16:33:06 +02:00
go	cmd/go/build: Add magic data for Plan 9 binaries.	2012-10-01 15:04:52 -04:00
godoc	cmd/godoc: clearer comments in FormatSelections	2012-10-01 14:17:25 -07:00
gofmt	gofmt: added testcase for files containing \r\n line endings	2012-09-19 14:14:21 -07:00
ld	cmd/go, cmd/ld: fix libgcc order and add __image_base__ symbol for windows	2012-09-26 22:34:25 +08:00
nm	cmd/pack: rename __.SYMDEF to __.GOSYMDEF	2012-09-13 10:26:21 -04:00
objdump	runtime/pprof: support OS X CPU profiling	2012-02-28 16:18:24 -05:00
pack	cmd/pack: rename __.SYMDEF to __.GOSYMDEF	2012-09-13 10:26:21 -04:00
prof	cmd/prof: don't build on Plan 9 for now.	2012-04-16 17:36:36 -07:00
vet	vet: fix rangeloop.	2012-09-20 08:12:47 +10:00
yacc	cmd/yacc: allow utf-8 token values	2012-09-13 13:59:00 -07:00