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fold-const.c (fold_ternary_loc): Constant-propagate after removing dead operands.

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2012-09-03  Marc Glisse  <marc.glisse@inria.fr>

gcc/
	* fold-const.c (fold_ternary_loc): Constant-propagate after
	removing dead operands.


gcc/testsuite/
	* gcc.dg/fold-perm.c: Improve test.

From-SVN: r190901
This commit is contained in:
Marc Glisse 2012-09-03 19:31:38 +02:00 committed by Marc Glisse
parent 197ce79334
commit aa369472a2
4 changed files with 21 additions and 11 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2012-09-03 Marc Glisse <marc.glisse@inria.fr>
* fold-const.c (fold_ternary_loc): Constant-propagate after
removing dead operands.
2012-09-03 Michael Matz <matz@suse.de>
PR tree-optimization/46590

20
gcc/fold-const.c
View File

@ -14196,16 +14196,6 @@ fold_ternary_loc (location_t loc, enum tree_code code, tree type,
return op1;
}
if ((TREE_CODE (arg0) == VECTOR_CST
|| TREE_CODE (arg0) == CONSTRUCTOR)
&& (TREE_CODE (arg1) == VECTOR_CST
|| TREE_CODE (arg1) == CONSTRUCTOR))
{
t = fold_vec_perm (type, arg0, arg1, sel);
if (t != NULL_TREE)
return t;
}
if (all_in_vec0)
op1 = op0;
else if (all_in_vec1)
@ -14216,6 +14206,16 @@ fold_ternary_loc (location_t loc, enum tree_code code, tree type,
need_mask_canon = true;
}
if ((TREE_CODE (op0) == VECTOR_CST
|| TREE_CODE (op0) == CONSTRUCTOR)
&& (TREE_CODE (op1) == VECTOR_CST
|| TREE_CODE (op1) == CONSTRUCTOR))
{
t = fold_vec_perm (type, op0, op1, sel);
if (t != NULL_TREE)
return t;
}
if (op0 == op1 && !single_arg)
changed = true;

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2012-09-03 Marc Glisse <marc.glisse@inria.fr>
* gcc.dg/fold-perm.c: Improve test.
2012-09-03 Tobias Burnus <burnus@net-b.de>
PR fortran/51632

3
gcc/testsuite/gcc.dg/fold-perm.c
View File

@ -3,11 +3,12 @@
typedef int veci __attribute__ ((vector_size (4 * sizeof (int))));
void fun (veci *f, veci *g, veci *h)
void fun (veci *f, veci *g, veci *h, veci *i)
{
veci m = { 7, 7, 4, 6 };
veci n = { 0, 1, 2, 3 };
veci p = { 1, 1, 7, 6 };
*i = __builtin_shuffle (*i, p, m);
*h = __builtin_shuffle (*h, *h, p);
*g = __builtin_shuffle (*f, *g, m);
*f = __builtin_shuffle (*f, *g, n);