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Re: [ARM] Use UBFX for some and-immediate operations

From: Richard Earnshaw <rearnsha at arm dot com>
To: Richard Henderson <rth at redhat dot com>
Cc: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Date: Sat, 04 Aug 2012 15:03:42 +0100
Subject: Re: [ARM] Use UBFX for some and-immediate operations
References: <501AA9D8.3080506@arm.com> <501C1406.9000000@redhat.com>

On 03/08/12 19:10, Richard Henderson wrote:
> On 2012-08-02 09:24, Richard Earnshaw wrote:
>> +	    /* Extz only supports SImode, but we can coerce the operands
>> +	       into that mode.  */
>> +	    emit_constant_insn (cond,
>> +				gen_extzv_t2 (gen_lowpart (mode, target),
>> +					      gen_lowpart (mode, source),
>> +					      GEN_INT (i), const0_rtx));
> 
> Didn't you mean gen_lowpart (SImode, ...) ?
> 
> 
> r~
> 

Urm, yes.  Well spotted.

Fixed thusly:

2012-08-04  Richard Earnshaw  <rearnsha@arm.com>

	* arm.c (arm_gen_constant): Use SImode when preparing operands for
	gen_extzv_t2.

Attachment: bfield2.patch
Description: Text document

References:
- [ARM] Use UBFX for some and-immediate operations
  - From: Richard Earnshaw
- Re: [ARM] Use UBFX for some and-immediate operations
  - From: Richard Henderson

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