OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR target/22077 (vec_all_eq does not produce good result)

Browse Source 
PR 22077.
Oked by Roger Sayle.

From-SVN: r101211
This commit is contained in:
Fariborz Jahanian 2005-06-20 17:59:35 +00:00
parent b376133b7f
commit 8c98e9d03d
3 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2005-06-20 Roger Sayle <roger@eyesopen.com>
2005-06-20 Fariborz Jahanian <fjahanian@apple.com>
* combine.c (simplify_set): Simplify setting of CC register
by removing redundant compare with 0 on RHS.
2005-06-20 Jan Beulich <jbeulich@novell.com> 2005-06-20 Jan Beulich <jbeulich@novell.com>
* config/i386/netware-libgcc.def: Update copyright. * config/i386/netware-libgcc.def: Update copyright.

5
gcc/combine.c
View File

@ -5274,6 +5274,11 @@ simplify_set (rtx x)
SUBST (SET_SRC (x), gen_rtx_COMPARE (compare_mode, op0, op1)); SUBST (SET_SRC (x), gen_rtx_COMPARE (compare_mode, op0, op1));
src = SET_SRC (x); src = SET_SRC (x);
} }
else if (GET_MODE (op0) == compare_mode && op1 == const0_rtx)
{
SUBST(SET_SRC (x), op0);
src = SET_SRC (x);
}
else else
{ {
/* Otherwise, update the COMPARE if needed. */ /* Otherwise, update the COMPARE if needed. */

10
gcc/testsuite/gcc.dg/altivec-nomfcr.c Normal file
View File

@ -0,0 +1,10 @@
/* { dg-do compile { target powerpc-*-* } } */
/* { dg-options "-O3 -maltivec" } */
/* { dg-final { scan-assembler-not "mfcr" } } */
#include <altivec.h>
int foo(vector float x, vector float y) {
if (vec_all_eq(x,y)) return 3245;
else return 12;
}