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Re: Fix PR debug/66728
- From: Jeff Law <law at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org, richard dot sandiford at arm dot com
- Date: Fri, 21 Aug 2015 10:13:41 -0600
- Subject: Re: Fix PR debug/66728
- Authentication-results: sourceware.org; auth=none
- References: <87io88920k dot fsf at e105548-lin dot cambridge dot arm dot com>
On 08/21/2015 07:58 AM, Richard Sandiford wrote:
This is yet another bug caused by rtx having modeless scalar integer
constants. We need to use context to find the actual mode of a
CONST_INT or CONST_WIDE_INT.
We've been bumping into these as long as I can remember. I suspect I
still have a great essay from Jim on why it's hard to fix on a hard
drive from one of my old HP boxes from the early 90s ;-)
gcc/
PR debug/66728
* dwarf2out.c (loc_descriptor): Remove redundant GET_MODE of
CONST_WIDE_INTs. Handle BLKmode for CONST_WIDE_INT too.
(add_const_value_attribute): Add a mode parameter.
Check it for CONST_INT and CONST_WIDE_INT. Use it to build
wide_int values.
(add_location_or_const_value_attribute): Update call.
(tree_add_const_value_attribute): Likewise.
I'll have to defer to Jason & Jakub on this. Note Jakub is on PTO right
now.
jeff