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Re: x86 patch: SSE-based FP<=>int conversions, round 3

From: Mike Stump <mrs at apple dot com>
To: Stuart Hastings <stuart at apple dot com>
Cc: Jan Hubicka <hubicka at ucw dot cz>, gcc-patches at gcc dot gnu dot org
Date: Thu, 21 Dec 2006 19:02:16 -0800
Subject: Re: x86 patch: SSE-based FP<=>int conversions, round 3
References: <7EA9B724-78B4-4A1D-9AA7-622B2AE06A64@apple.com> <20061218013913.GA8967@atrey.karlin.mff.cuni.cz> <55CD9C69-9758-4D53-AAFC-04698FE39132@apple.com>

On Dec 21, 2006, at 5:37 PM, Stuart Hastings wrote:

I tried this; Darwin's assembler doesn't like that. I guess this means that Darwin's assembler isn't really an AT&T assembler (?).

It looks to me like the Right Thing To Do is to create a third, non- AT&T, non-Intel/Microsoft assembler variant "ATT_Darwin."

Ick. :-( I'd rather get our gas and gas on the same page and go from there... You can put in a config check for support of the form you want, and enable the pattern when the assembler supports it.

See gcc_GAS_CHECK_FEATURE in configure for an example of how to do this.

References:
- Re: x86 patch: SSE-based FP<=>int conversions, round 2
  - From: Stuart Hastings
- Re: x86 patch: SSE-based FP<=>int conversions, round 2
  - From: Jan Hubicka
- Re: x86 patch: SSE-based FP<=>int conversions, round 3
  - From: Stuart Hastings

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