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

re PR c++/90810 (Different intrinsics behavior on G++ 7.4 and G++ 8.3) 

PR c++/90810
	* init.c (constant_value_1): Handle VECTOR_CST DECL_INITIAL for
	!DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P decls like CONSTRUCTOR.

	* g++.dg/ext/vector37.C: New test.

From-SVN: r272152
This commit is contained in:
Jakub Jelinek 2019-06-11 15:01:40 +02:00 committed by Jakub Jelinek
parent 7ac9a20184
commit 5a5da48013
4 changed files with 45 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/cp/ChangeLog
View File

@ -1,3 +1,9 @@
2019-06-11 Jakub Jelinek <jakub@redhat.com>
PR c++/90810
* init.c (constant_value_1): Handle VECTOR_CST DECL_INITIAL for
!DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P decls like CONSTRUCTOR.
2019-06-11 Martin Liska <mliska@suse.cz>
PR c++/87847

7
gcc/cp/init.c
View File

@ -2339,8 +2339,11 @@ constant_value_1 (tree decl, bool strict_p, bool return_aggregate_cst_ok_p)
|| TREE_CODE (init) == STRING_CST)))
break;
/* Don't return a CONSTRUCTOR for a variable with partial run-time
initialization, since it doesn't represent the entire value. */
if (TREE_CODE (init) == CONSTRUCTOR
initialization, since it doesn't represent the entire value.
Similarly for VECTOR_CSTs created by cp_folding those
CONSTRUCTORs. */
if ((TREE_CODE (init) == CONSTRUCTOR
|| TREE_CODE (init) == VECTOR_CST)
&& !DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl))
break;
/* If the variable has a dynamic initializer, don't use its

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2019-06-11 Jakub Jelinek <jakub@redhat.com>
PR c++/90810
* g++.dg/ext/vector37.C: New test.
2019-06-10 Matthew Beliveau <mbelivea@redhat.com>
PR c++/87250

29
gcc/testsuite/g++.dg/ext/vector37.C Normal file
View File

@ -0,0 +1,29 @@
// PR c++/90810
// { dg-do run }
void
foo (float x, float y)
{
typedef float __attribute__ ((__vector_size__ (4 * sizeof (float)), __may_alias__)) V;
const V a = { x, x, x, x }, b = { y, y, y, y };
const V c = a / b;
if (c[0] != 6.0f || c[1] != 6.0f || c[2] != 6.0f || c[3] != 6.0f)
__builtin_abort ();
}
void
bar (float y)
{
typedef float __attribute__ ((__vector_size__ (4 * sizeof (float)), __may_alias__)) V;
const V a = { 7.0f, 8.0f, 9.0f, 10.0f }, b = { 1.0f, 2.0f, 3.0f, y };
const V c = a / b;
if (c[0] != 7.0f || c[1] != 4.0f || c[2] != 3.0f || c[3] != 5.0f)
__builtin_abort ();
}
int
main ()
{
foo (12.0f, 2.0f);
bar (2.0f);
}