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re PR rtl-optimization/45352 (ICE: in reset_sched_cycles_in_current_ebb, at sel-sched.c:7058)

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PR rtl-optimization/45352
        * sel-sched.c: Update copyright years.
        (reset_sched_cycles_in_current_ebb): Also recheck the DFA state
        in the advancing loop when we have issued issue_rate insns.

	* gcc.dg/pr45352-3.c: New.

From-SVN: r168742
This commit is contained in:
Andrey Belevantsev 2011-01-13 12:29:09 +03:00 committed by Andrey Belevantsev
parent 1ee3ea052a
commit 9b0f04e708
4 changed files with 36 additions and 6 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2011-01-13 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/45352
* sel-sched.c: Update copyright years.
(reset_sched_cycles_in_current_ebb): Also recheck the DFA state
in the advancing loop when we have issued issue_rate insns.
2011-01-12 Richard Henderson <rth@redhat.com>
* config/mn10300/mn10300.c (mn10300_md_asm_clobbers): New.

14
gcc/sel-sched.c
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@ -1,5 +1,6 @@
/* Instruction scheduling pass. Selective scheduler and pipeliner.
Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
This file is part of GCC.
@ -6988,7 +6989,7 @@ reset_sched_cycles_in_current_ebb (void)
{
int cost, haifa_cost;
int sort_p;
bool asm_p, real_insn, after_stall;
bool asm_p, real_insn, after_stall, all_issued;
int clock;
if (!INSN_P (insn))
@ -7024,8 +7025,8 @@ reset_sched_cycles_in_current_ebb (void)
haifa_cost = cost;
after_stall = 1;
}
if (haifa_cost == 0
&& issued_insns == issue_rate)
all_issued = issued_insns == issue_rate;
if (haifa_cost == 0 && all_issued)
haifa_cost = 1;
if (haifa_cost > 0)
{
@ -7053,11 +7054,12 @@ reset_sched_cycles_in_current_ebb (void)
break;
/* When the data dependency stall is longer than the DFA stall,
it could be that after the longer stall the insn will again
and when we have issued exactly issue_rate insns and stalled,
it could be that after this longer stall the insn will again
become unavailable to the DFA restrictions. Looks strange
but happens e.g. on x86-64. So recheck DFA on the last
iteration. */
if (after_stall
if ((after_stall || all_issued)
&& real_insn
&& haifa_cost == 0)
haifa_cost = estimate_insn_cost (insn, curr_state);

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2011-01-13 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/45352
* gcc.dg/pr45352-3.c: New.
2011-01-12 Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
* g++.dg/cpp0x/range-for4.C: Delete useless include and duplicated

16
gcc/testsuite/gcc.dg/pr45352-3.c Normal file
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@ -0,0 +1,16 @@
/* { dg-do compile { target powerpc*-*-* ia64-*-* x86_64-*-* } } */
/* { dg-options "-O -fprofile-generate -fgcse -fno-gcse-lm -fgcse-sm -fno-ivopts -fno-tree-loop-im -ftree-pre -funroll-loops -fno-web -fschedule-insns2 -fselective-scheduling2 -fsel-sched-pipelining" } */
extern volatile float f[];
void foo (void)
{
int i;
for (i = 0; i < 100; i++)
f[i] = 0;
for (i = 0; i < 100; i++)
f[i] = 0;
for (i = 0; i < 100; i++)
if (f[i])
__builtin_abort ();
}