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Re: patch: dwarf handling of values spanning > 1 register

From: Aldy Hernandez <aldyh at redhat dot com>
To: Daniel Jacobowitz <drow at mvista dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Wed, 5 Mar 2003 11:43:32 -0800
Subject: Re: patch: dwarf handling of values spanning > 1 register

On Wednesday, March 5, 2003, at 11:36 AM, Daniel Jacobowitz wrote:

On Wed, Mar 05, 2003 at 11:27:08AM -0800, Aldy Hernandez wrote:

!   if (HARD_REGNO_NREGS (reg, GET_MODE (rtl)) > 1
!       || (*targetm.dwarf_register_span) (rtl))


Ow, please don't just discard and recreate the result of a function
which returns RTL.  Pass it as an argument to
multiple_reg_loc_descriptor instead.

Sure I can do that.

What about a hypothetical value which goes in two 64-bit SPE registers
(a synthesized 128-bit vector)?  I think something's at the wrong level
here.

Well since GCC won't generate that, not even in the remote future, I don't see a problem.

Aldy

Follow-Ups:
- Re: patch: dwarf handling of values spanning > 1 register
  - From: Richard Henderson

References:
- Re: patch: dwarf handling of values spanning > 1 register
  - From: Daniel Jacobowitz

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