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re PR target/30961 (redundant reg/mem stores/moves) 

gcc/

2007-11-06  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>

	PR target/30961
	* reload1.c (find_reloads): Also check in_reg when handling a
	simple move with an input reload and a destination of a hard
	register.

gcc/testsuite/

2007-11-06  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/30961
	* gcc.target/i386/pr30961-1.c: New.

From-SVN: r129943
This commit is contained in:
H.J. Lu 2007-11-06 11:19:23 -08:00
parent b8c963204c
commit b3519e7c8a
4 changed files with 27 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2007-11-06 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
PR target/30961
* reload1.c (find_reloads): Also check in_reg when handling a
simple move with an input reload and a destination of a hard
register.
2007-11-06 Maxim Kuvyrkov <maxim@codesourcery.com>
* config/m68k/m68k.c (sched-int.h, insn-codes.h): New includes.

3
gcc/reload.c
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@ -4462,7 +4462,8 @@ find_reloads (rtx insn, int replace, int ind_levels, int live_known,
if (rld[i].when_needed == RELOAD_FOR_INPUT
&& GET_CODE (PATTERN (insn)) == SET
&& REG_P (SET_DEST (PATTERN (insn)))
&& SET_SRC (PATTERN (insn)) == rld[i].in
&& (SET_SRC (PATTERN (insn)) == rld[i].in
|| SET_SRC (PATTERN (insn)) == rld[i].in_reg)
&& !elimination_target_reg_p (SET_DEST (PATTERN (insn))))
{
rtx dest = SET_DEST (PATTERN (insn));

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2007-11-06 H.J. Lu <hongjiu.lu@intel.com>
PR target/30961
* gcc.target/i386/pr30961-1.c: New.
2007-11-06 Tom Tromey <tromey@redhat.com>
PR c++/32368:

13
gcc/testsuite/gcc.target/i386/pr30961-1.c Normal file
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@ -0,0 +1,13 @@
/* { dg-do compile } */
/* { dg-require-effective-target lp64 } */
/* { dg-options "-O2" } */
double
convert (long long in)
{
double f;
__builtin_memcpy( &f, &in, sizeof( in ) );
return f;
}
/* { dg-final { scan-assembler-not "movapd" } } */