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re PR target/69053 (ICE in build_vector_from_val) 

2016-01-12  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/69053
	* tree-vect-loop.c (get_initial_def_for_reduction): Properly
	convert initial value for cond reductions.

	* g++.dg/torture/pr69053.C: New testcase.

From-SVN: r232263
This commit is contained in:
Richard Biener 2016-01-12 11:41:16 +00:00 committed by Richard Biener
parent 5b723b6806
commit 8eac49b1b6
4 changed files with 33 additions and 12 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2016-01-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/69053
* tree-vect-loop.c (get_initial_def_for_reduction): Properly
convert initial value for cond reductions.
2016-01-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/69007

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-01-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/69053
* g++.dg/torture/pr69053.C: New testcase.
2016-01-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/69168

17
gcc/testsuite/g++.dg/torture/pr69053.C Normal file
View File

@ -0,0 +1,17 @@
// { dg-do compile }
// { dg-additional-options "-march=core-avx2" { target x86_64-*-* i?86-*-* } }
struct A {
int *elem[1];
};
int a, d, e;
A *b;
int *c;
int main()
{
int *f = 0;
for (; e; e++)
if (b->elem[e])
f = c;
if (f)
a = d;
}

17
gcc/tree-vect-loop.c
View File

@ -4075,10 +4075,10 @@ get_initial_def_for_reduction (gimple *stmt, tree init_val,
tree *elts;
int i;
bool nested_in_vect_loop = false;
tree init_value;
REAL_VALUE_TYPE real_init_val = dconst0;
int int_init_val = 0;
gimple *def_stmt = NULL;
gimple_seq stmts = NULL;
gcc_assert (vectype);
nunits = TYPE_VECTOR_SUBPARTS (vectype);
@ -4107,16 +4107,6 @@ get_initial_def_for_reduction (gimple *stmt, tree init_val,
return vect_create_destination_var (init_val, vectype);
}
if (TREE_CONSTANT (init_val))
{
if (SCALAR_FLOAT_TYPE_P (scalar_type))
init_value = build_real (scalar_type, TREE_REAL_CST (init_val));
else
init_value = build_int_cst (scalar_type, TREE_INT_CST_LOW (init_val));
}
else
init_value = init_val;
switch (code)
{
case WIDEN_SUM_EXPR:
@ -4193,7 +4183,10 @@ get_initial_def_for_reduction (gimple *stmt, tree init_val,
break;
}
}
init_def = build_vector_from_val (vectype, init_value);
init_val = gimple_convert (&stmts, TREE_TYPE (vectype), init_val);
if (! gimple_seq_empty_p (stmts))
gsi_insert_seq_on_edge_immediate (loop_preheader_edge (loop), stmts);
init_def = build_vector_from_val (vectype, init_val);
break;
default: