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Handle multi-word regsiters in REG_CFA_RESTORE notes

From: Bernd Schmidt <bernds at codesourcery dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Thu, 15 Sep 2011 03:12:04 +0200
Subject: Handle multi-word regsiters in REG_CFA_RESTORE notes

While testing the altest iteration of shrink-wrapping on mips-elf, a new
failure showed up in gcc.dg/pr43139.c. When restoring floating-point
registers, we attach REG_CFA_RESTORE notes for DFmode registers, but the
dwarf2cfi code only records a single regno for such a multiword hard reg.

Fixed with this patch, tested with shrink-wrapping on mips-elf (default
multilib plus two with -mips16). Ok?


Bernd

Attachment: cfa-multiword.diff
Description: Text document

Follow-Ups:
- Re: Handle multi-word regsiters in REG_CFA_RESTORE notes
  - From: Richard Henderson

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