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Re: avoid ambiguous/misleading paradoxical subreg in compares
- From: Alexandre Oliva <aoliva at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: 01 Feb 2005 04:17:42 -0200
- Subject: Re: avoid ambiguous/misleading paradoxical subreg in compares
- Organization: Red Hat Global Engineering Services Compiler Team
- References: <orhdmgabn8.fsf@livre.redhat.lsd.ic.unicamp.br>
On Dec 20, 2004, Alexandre Oliva <aoliva@redhat.com> wrote:
> Index: gcc/ChangeLog
> from Alexandre Oliva <aoliva@redhat.com>
> * combine.c (simplify_comparison, case SIGN_EXTEND, ZERO_EXTEND):
> Do not drop the extend if we'd have to add a paradoxical subreg
> later. Include optabs.h and insn-codes.h.
> * Makefile.in (combine.o): Depend on $(OPTABS_H).
http://gcc.gnu.org/ml/gcc-patches/2004-12/msg01598.html
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--
Alexandre Oliva http://www.ic.unicamp.br/~oliva/
Red Hat Compiler Engineer aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist oliva@{lsd.ic.unicamp.br, gnu.org}