[SunRescue] Code Optimization -- was RE: GCC code generation sucks....

[Greg A. Woods]

[ On Sunday, April 29, 2001 at 22:13:56 (-0700), Chris Byrne wrote: ]
> Subject: [SunRescue] Code Optimization -- was RE: GCC code generation sucks....
>
> Why? Because no good work has gone into optimizing GCC for new x86 platforms
> since they wrote the 586/686 extensions. Hell 90% of the x86 code out there
> is still compiled with 386 or 486 optimization.

Not to mention that some folks are even still fixing VAX code generation
in GCC too!  This just in from NetBSD's source-changes list:
 
	Module Name:	gnusrc
	Committed By:	matt
	Date:		Mon Apr 30 06:19:59 UTC 2001
	
	Modified Files:
		gnusrc/gnu/dist/toolchain/gcc/config/vax: vax.c vax.h vax.md
	
	Log Message:
	Fix two code generation problems.  The first is to fix how negative const
	int values are added in DI (if the the constant is <0 & > -2*1024*1024 then
	use a decl/subl and sbwc $0 instead of addl/adwc).  The second fix is to
	disallow register elimination peepholes when that register is used by
	other operands in the other instructions in the peephole.

-- 
							Greg A. Woods

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