[Bug target/70442] [6 Regression] gcc ICE at -O2 and above on valid code on x86_64-linux-gnu in "extract_insn"

2016-03-31 Thread ienkovich at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70442

Ilya Enkovich  changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution|--- |FIXED

--- Comment #4 from Ilya Enkovich  ---
Fixed

[Bug target/70442] [6 Regression] gcc ICE at -O2 and above on valid code on x86_64-linux-gnu in "extract_insn"

2016-03-31 Thread ienkovich at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70442

--- Comment #3 from Ilya Enkovich  ---
Author: ienkovich
Date: Thu Mar 31 15:37:12 2016
New Revision: 234637

URL: https://gcc.gnu.org/viewcvs?rev=234637=gcc=rev
Log:
gcc/

PR target/70442
* config/i386/i386.c (scalar_chain::convert_op): Fix
description.
(scalar_chain::convert_insn): Call convert_op for reg
moves to handle undefined registers.

gcc/testsuite/

PR target/70442
* gcc.dg/pr70442.c: New test.

Added:
trunk/gcc/testsuite/gcc.dg/pr70442.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog

[Bug target/70442] [6 Regression] gcc ICE at -O2 and above on valid code on x86_64-linux-gnu in "extract_insn"

2016-03-30 Thread ienkovich at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70442

Ilya Enkovich  changed:

   What|Removed |Added

 Status|NEW |ASSIGNED
   Assignee|unassigned at gcc dot gnu.org  |ienkovich at gcc dot 
gnu.org

--- Comment #2 from Ilya Enkovich  ---
Another undefined register case in STV.  Undefined registers were supported in
scalar_chain::convert_op but we don't call it for reg-reg moves.  Testing this
patch:

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 1639704..8c6024b 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -3467,6 +3468,7 @@ scalar_chain::convert_insn (rtx_insn *insn)
   break;

 case REG:
+  convert_op (, insn);
   break;

 case SUBREG:

[Bug target/70442] [6 Regression] gcc ICE at -O2 and above on valid code on x86_64-linux-gnu in "extract_insn"

2016-03-29 Thread jakub at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70442

Jakub Jelinek  changed:

   What|Removed |Added

   Priority|P3  |P1
 Status|UNCONFIRMED |NEW
   Last reconfirmed||2016-03-29
 CC||jakub at gcc dot gnu.org
   Target Milestone|--- |6.0
Summary|gcc ICE at -O2 and above on |[6 Regression] gcc ICE at
   |valid code on   |-O2 and above on valid code
   |x86_64-linux-gnu in |on x86_64-linux-gnu in
   |"extract_insn"  |"extract_insn"
 Ever confirmed|0   |1

--- Comment #1 from Jakub Jelinek  ---
Started with r228231.