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Re: Insn missing in Size optimization(-Os)

From: Ian Lance Taylor <iant at google dot com>
To: daniel tian <daniel dot xntian at gmail dot com>
Cc: gcc at gcc dot gnu dot org, peng dot zheng at mavrixtech dot com, yan dot hu at mavrixtech dot com dot cn, Dave Korn <dave dot korn dot cygwin at googlemail dot com>
Date: Wed, 02 Dec 2009 08:21:16 -0800
Subject: Re: Insn missing in Size optimization(-Os)
References: <121fadb80912020218k6beb60aco49793e999091a747@mail.gmail.com> <121fadb80912020429w529cd9c5sd5c6db3f45f823f0@mail.gmail.com>

daniel tian <daniel.xntian@gmail.com> writes:

>   Addition information, I just found. It was deleted in function: void
> set_insn_deleted (rtx insn), in emit-rtl.c.

You need to figure out how register 42 in the call insn got changed to
register 0 if reg_renumber[42] was not set to 0.

Ian

References:
- Insn missing in Size optimization(-Os)
  - From: daniel tian
- Re: Insn missing in Size optimization(-Os)
  - From: daniel tian

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