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Subject: [Bug debug/54796] [4.8 Regression] Non-addressable stack parameter debug quality regression
Date: Thu, 04 Oct 2012 14:09:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54796

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-10-04
         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-04 14:08:49 UTC ---
Created attachment 28357
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28357
gcc48-pr54796.patch

Untested patch that looks promissing to me.
For -m32 guality.exp results improve:
+XPASS: gcc.dg/guality/example.c  -Os  execution test
-FAIL: gcc.dg/guality/pr43051-1.c  -Os  line 39 c == &a[0]
-FAIL: gcc.dg/guality/pr54519-3.c  -Os  line 23 y == 117
-FAIL: gcc.dg/guality/pr54519-3.c  -Os  line 23 z == 8  
(plus all gcc.dg/guality/pr54796.c -O1 and above results which fail without the
non-testsuite part of the patch).  For -m64 no change (expectedly, one would
need to have more than 6 arguments in teststo trigger stack slot passing).