[PATCH] ARM optimize

[Richard Earnshaw]

This patch adds combiner patterns to the ARM back end to match sequences 
such as

	A = (B & ((1 << n) - 1) ? X : A

And

	A = (B & C) ? X : A

where C is a legitimate ARM immediate operand.

Tested on arm-elf and installed on the mainline..

2004-05-16  Richard Earnshaw  <rearnsha@arm.com>

	PR target/10982
	* arm.md (ne_zeroextractsi): Convert to insn-and-split.
	(ne_zeroextractsi_shifted): New pattern.
	(ite_ne_zeroextractsi): New pattern.
	(ite_ne_zeroextractsi_shifted): New pattern.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: ze_shifted.patch
Type: text/x-patch
Size: 5345 bytes
Desc: ze_shifted.patch
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20040517/baf35b11/attachment.bin>