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* [Bug middle-end/55929] New: lra-constraints-ICE while xg++ compile libitm with -Os
@ 2013-01-10  1:52 leo at yuriev dot ru
  2013-01-10  2:09 ` [Bug middle-end/55929] " pinskia at gcc dot gnu.org
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: leo at yuriev dot ru @ 2013-01-10  1:52 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55929

             Bug #: 55929
           Summary: lra-constraints-ICE while xg++ compile libitm with -Os
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: leo@yuriev.ru


libtool: compile:  /sandbox/stage1/gcc/./gcc/xg++ -B/sandbox/stage1/gcc/./gcc/
-nostdinc++ -nostdinc++
-I/sandbox/stage1/gcc/x86_64-linux-gnu/libstdc++-v3/include/x86_64-linux-gnu
-I/sandbox/stage1/gcc/x86_64-linux-gnu/libstdc++-v3/include
-I/sandbox/gcc-git/libstdc++-v3/libsupc++
-I/sandbox/gcc-git/libstdc++-v3/include/backward
-I/sandbox/gcc-git/libstdc++-v3/testsuite/util
-L/sandbox/stage1/gcc/x86_64-linux-gnu/libstdc++-v3/src
-L/sandbox/stage1/gcc/x86_64-linux-gnu/libstdc++-v3/src/.libs
-B/sandbox/stage1/x86_64-linux-gnu/bin/ -B/sandbox/stage1/x86_64-linux-gnu/lib/
-isystem /sandbox/stage1/x86_64-linux-gnu/include -isystem
/sandbox/stage1/x86_64-linux-gnu/sys-include -DHAVE_CONFIG_H -I.
-I/sandbox/gcc-git/libitm -I/sandbox/gcc-git/libitm/config/linux/x86
-I/sandbox/gcc-git/libitm/config/linux -I/sandbox/gcc-git/libitm/config/x86
-I/sandbox/gcc-git/libitm/config/posix -I/sandbox/gcc-git/libitm/config/generic
-I/sandbox/gcc-git/libitm -mrtm -Wall -pthread -Werror -std=gnu++0x
-funwind-tables -fno-exceptions -fno-rtti -fabi-version=4 -Os -Wno-error -g0
-D_GNU_SOURCE -c /sandbox/gcc-git/libitm/beginend.cc  -fPIC -DPIC -o beginend.o

/sandbox/gcc-git/libitm/beginend.cc: In static member function 'static uint32_t
GTM::gtm_thread::begin_transaction(uint32_t, const gtm_jmpbuf*)':
/sandbox/gcc-git/libitm/beginend.cc:346:1: error: unable to generate reloads
for:
}
^
(jump_insn 43 42 44 8 (parallel [
            (set (pc)
                (if_then_else (ne (unspec [
                                (const_int 0 [0])
                            ] UNSPEC_XBEGIN_ABORT)
                        (const_int 0 [0]))
                    (label_ref 44)
                    (pc)))
            (set (reg:SI 116)
                (unspec_volatile:SI [
                        (reg:SI 116)
                    ] UNSPECV_XBEGIN))
        ]) /sandbox/stage1/gcc/gcc/include/rtmintrin.h:50 1024 {xbegin_1}
     (nil)
-> 44)
/sandbox/gcc-git/libitm/beginend.cc:346:1: internal compiler error: in
curr_insn_transform, at lra-constraints.c:2754


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/55929] lra-constraints-ICE while xg++ compile libitm with -Os
  2013-01-10  1:52 [Bug middle-end/55929] New: lra-constraints-ICE while xg++ compile libitm with -Os leo at yuriev dot ru
@ 2013-01-10  2:09 ` pinskia at gcc dot gnu.org
  2013-01-10 11:11 ` ubizjak at gmail dot com
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2013-01-10  2:09 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55929

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2013-01-10 02:09:10 UTC ---
>/sandbox/gcc-git/libitm/beginend.cc:346:1: error: unable to generate reloads

Reload would not be able handle this either as it is jump_insn.


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/55929] lra-constraints-ICE while xg++ compile libitm with -Os
  2013-01-10  1:52 [Bug middle-end/55929] New: lra-constraints-ICE while xg++ compile libitm with -Os leo at yuriev dot ru
  2013-01-10  2:09 ` [Bug middle-end/55929] " pinskia at gcc dot gnu.org
@ 2013-01-10 11:11 ` ubizjak at gmail dot com
  2013-01-10 17:31 ` ubizjak at gmail dot com
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: ubizjak at gmail dot com @ 2013-01-10 11:11 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55929

Uros Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2013-01-10
         AssignedTo|unassigned at gcc dot       |ubizjak at gmail dot com
                   |gnu.org                     |
   Target Milestone|---                         |4.8.0
     Ever Confirmed|0                           |1

--- Comment #2 from Uros Bizjak <ubizjak at gmail dot com> 2013-01-10 11:10:39 UTC ---
(In reply to comment #1)
> >/sandbox/gcc-git/libitm/beginend.cc:346:1: error: unable to generate reloads
> 
> Reload would not be able handle this either as it is jump_insn.

How annoying.

In this case, we have to expand with a hard-reg temporary (%eax). I will
prepare a patch for this.


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/55929] lra-constraints-ICE while xg++ compile libitm with -Os
  2013-01-10  1:52 [Bug middle-end/55929] New: lra-constraints-ICE while xg++ compile libitm with -Os leo at yuriev dot ru
  2013-01-10  2:09 ` [Bug middle-end/55929] " pinskia at gcc dot gnu.org
  2013-01-10 11:11 ` ubizjak at gmail dot com
@ 2013-01-10 17:31 ` ubizjak at gmail dot com
  2013-01-10 19:50 ` uros at gcc dot gnu.org
  2013-01-10 19:52 ` [Bug target/55929] " ubizjak at gmail dot com
  4 siblings, 0 replies; 6+ messages in thread
From: ubizjak at gmail dot com @ 2013-01-10 17:31 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55929

--- Comment #3 from Uros Bizjak <ubizjak at gmail dot com> 2013-01-10 17:30:36 UTC ---
Patch in testing:

Index: i386.md
===================================================================
--- i386.md     (revision 195063)
+++ i386.md     (working copy)
@@ -18018,7 +18018,10 @@
 {
   rtx label = gen_label_rtx ();

-  operands[1] = force_reg (SImode, constm1_rtx);
+  /* xbegin is emitted as jump_insn, so reload won't be able
+     to reload its operand.  Force the value into AX hard register.  */
+  operands[1] = gen_rtx_REG (SImode, AX_REG);
+  emit_move_insn (operands[1], constm1_rtx);

   emit_jump_insn (gen_xbegin_1 (operands[1], label));


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/55929] lra-constraints-ICE while xg++ compile libitm with -Os
  2013-01-10  1:52 [Bug middle-end/55929] New: lra-constraints-ICE while xg++ compile libitm with -Os leo at yuriev dot ru
                   ` (2 preceding siblings ...)
  2013-01-10 17:31 ` ubizjak at gmail dot com
@ 2013-01-10 19:50 ` uros at gcc dot gnu.org
  2013-01-10 19:52 ` [Bug target/55929] " ubizjak at gmail dot com
  4 siblings, 0 replies; 6+ messages in thread
From: uros at gcc dot gnu.org @ 2013-01-10 19:50 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55929

--- Comment #4 from uros at gcc dot gnu.org 2013-01-10 19:49:34 UTC ---
Author: uros
Date: Thu Jan 10 19:49:17 2013
New Revision: 195094

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195094
Log:
    PR target/55929
    * config/i386/i386.md (xbegin): Use %eax as a temporary register.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug target/55929] lra-constraints-ICE while xg++ compile libitm with -Os
  2013-01-10  1:52 [Bug middle-end/55929] New: lra-constraints-ICE while xg++ compile libitm with -Os leo at yuriev dot ru
                   ` (3 preceding siblings ...)
  2013-01-10 19:50 ` uros at gcc dot gnu.org
@ 2013-01-10 19:52 ` ubizjak at gmail dot com
  4 siblings, 0 replies; 6+ messages in thread
From: ubizjak at gmail dot com @ 2013-01-10 19:52 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55929

Uros Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86
             Status|ASSIGNED                    |RESOLVED
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2013-01/msg00568.htm
                   |                            |l
          Component|middle-end                  |target
         Resolution|                            |FIXED
           Severity|major                       |normal

--- Comment #5 from Uros Bizjak <ubizjak at gmail dot com> 2013-01-10 19:51:50 UTC ---
Fixed.


^ permalink raw reply	[flat|nested] 6+ messages in thread
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2013-01-10  1:52 [Bug middle-end/55929] New: lra-constraints-ICE while xg++ compile libitm with -Os leo at yuriev dot ru
2013-01-10  2:09 ` [Bug middle-end/55929] " pinskia at gcc dot gnu.org
2013-01-10 11:11 ` ubizjak at gmail dot com
2013-01-10 17:31 ` ubizjak at gmail dot com
2013-01-10 19:50 ` uros at gcc dot gnu.org
2013-01-10 19:52 ` [Bug target/55929] " ubizjak at gmail dot com

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