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[PATCH,ARM][5/n] Split shift di patterns

From: "Greta Yorsh" <greta dot yorsh at arm dot com>
To: "Greta Yorsh" <Greta dot Yorsh at arm dot com>, "GCC Patches" <gcc-patches at gcc dot gnu dot org>
Cc: "Richard Earnshaw" <Richard dot Earnshaw at arm dot com>, "Ramana Radhakrishnan" <Ramana dot Radhakrishnan at arm dot com>, <nickc at redhat dot com>, <paul at codesourcery dot com>
Date: Mon, 18 Feb 2013 18:42:50 -0000
Subject: [PATCH,ARM][5/n] Split shift di patterns
References: <001101ce0e05$f5928a50$e0b79ef0$@yorsh@arm.com>

Convert define_insn into define_insn_and_split for various DImode shift
operations that output multiple assembly instructions.

This patch also adds a new pattern for RRX using a new UNSPEC. This pattern
matches RTL insns emitted by arm_ashrdi3_1bit and arm_lshrdi3_1bit
splitters. This patch also adds a new pattern shiftsi3_compare.

gcc/

2013-02-14  Greta Yorsh  <Greta.Yorsh@arm.com>

      * config/arm/arm.md (arm_ashldi3_1bit): Convert define_insn into
      define_insn_and_split.
        (arm_ashrdi3_1bit,arm_lshrdi3_1bit): Likewise.
      (shiftsi3_compare): New pattern.
      (rrx): New pattern.
      * config/arm/unspecs.md (UNSPEC_RRX): New.

Attachment: 5-split-shiftdi.patch.txt
Description: Text document

References:
- [PATCH, ARM][0/n] Split patterns that output multiple assembly instruction
  - From: Greta Yorsh

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