Cypherpunks repositories - gostls13.git/commit

]> Cypherpunks repositories - gostls13.git/commit

author	Russ Cox <rsc@golang.org>
	Thu, 24 May 2012 21:20:07 +0000 (17:20 -0400)
committer	Russ Cox <rsc@golang.org>
	Thu, 24 May 2012 21:20:07 +0000 (17:20 -0400)
commit	c6ce44822c5dba80ed8a2c3e5ebbd86e1a185dd1
tree	c7ea0b9b081e8998949512edec739c9477e1d479	tree
parent	11c1b1f96b9d2c99eef26cae2398961129985d75	commit \| diff

cmd/gc: faster code, mainly for rotate

* Eliminate bounds check on known small shifts.
* Rewrite x<<s | x>>(32-s) as a rotate (constant s).
* More aggressive (but still minimal) range analysis.

R=ken, dave, iant
CC=golang-dev
https://golang.org/cl/6209077

21 files changed:

src/cmd/5g/cgen.c		diff \| blob \| history
src/cmd/5g/cgen64.c		diff \| blob \| history
src/cmd/5g/gg.h		diff \| blob \| history
src/cmd/5g/ggen.c		diff \| blob \| history
src/cmd/5g/gsubr.c		diff \| blob \| history
src/cmd/6g/cgen.c		diff \| blob \| history
src/cmd/6g/gg.h		diff \| blob \| history
src/cmd/6g/ggen.c		diff \| blob \| history
src/cmd/6g/gsubr.c		diff \| blob \| history
src/cmd/8g/cgen.c		diff \| blob \| history
src/cmd/8g/cgen64.c		diff \| blob \| history
src/cmd/8g/gg.h		diff \| blob \| history
src/cmd/8g/ggen.c		diff \| blob \| history
src/cmd/8g/gsubr.c		diff \| blob \| history
src/cmd/gc/go.h		diff \| blob \| history
src/cmd/gc/range.c		diff \| blob \| history
src/cmd/gc/sinit.c		diff \| blob \| history
src/cmd/gc/subr.c		diff \| blob \| history
src/cmd/gc/walk.c		diff \| blob \| history
test/bounds.go	[new file with mode: 0644]	blob
test/rotate.go	[new file with mode: 0644]	blob

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