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Support "andhi/andsi/anddi" as a zero-extending move. 

gcc/

2010-10-08  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/45913
	* config/i386/i386.c (ix86_binary_operator_ok): Support
	"andhi/andsi/anddi" as a zero-extending move.

gcc/testsuite/

2010-10-08  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/45913
	* gcc.target/i386/pr45913.c: New.

From-SVN: r165215
This commit is contained in:
H.J. Lu 2010-10-09 05:34:10 +00:00 committed by H.J. Lu
parent 73d5e77082
commit c2c795ff32
4 changed files with 44 additions and 1 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2010-10-08 H.J. Lu <hongjiu.lu@intel.com>
PR target/45913
* config/i386/i386.c (ix86_binary_operator_ok): Support
"andhi/andsi/anddi" as a zero-extending move.
2010-10-08 Nathan Froyd <froydnj@codesourcery.com>
* builtins.c (fold_call_stmt): Don't copy gimple call arguments

11
gcc/config/i386/i386.c
View File

@ -14987,7 +14987,16 @@ ix86_binary_operator_ok (enum rtx_code code, enum machine_mode mode,
/* Source 1 cannot be a non-matching memory. */
if (MEM_P (src1) && !rtx_equal_p (dst, src1))
return false;
{
/* Support "andhi/andsi/anddi" as a zero-extending move. */
return (code == AND
&& (mode == HImode
|| mode == SImode
|| (TARGET_64BIT && mode == DImode))
&& CONST_INT_P (src2)
&& (INTVAL (src2) == 0xff
|| INTVAL (src2) == 0xffff));
}
return true;
}

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2010-10-08 H.J. Lu <hongjiu.lu@intel.com>
PR target/45913
* gcc.target/i386/pr45913.c: New.
2010-10-08 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR fortran/45943

23
gcc/testsuite/gcc.target/i386/pr45913.c Normal file
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@ -0,0 +1,23 @@
/* PR target/45913 */
/* { dg-do compile } */
/* { dg-options "-O2 -fselective-scheduling2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops" } */
extern void bar (int, int);
int ss[128];
void
foo (int i, int j, int k, int *p1, int *p2)
{
int s[128];
__builtin_memcpy (s, ss, sizeof s);
while (i--)
{
int a = s[i];
while (j--)
bar (k, p2[a]);
j = s[i] & 0xFF;
bar (p1[a], k);
}
}