diff options
Diffstat (limited to 'meta-oe/recipes-devtools/gcc/gcc-4.5/gcc-scalar-widening-pr45847.patch')
| -rw-r--r-- | meta-oe/recipes-devtools/gcc/gcc-4.5/gcc-scalar-widening-pr45847.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/meta-oe/recipes-devtools/gcc/gcc-4.5/gcc-scalar-widening-pr45847.patch b/meta-oe/recipes-devtools/gcc/gcc-4.5/gcc-scalar-widening-pr45847.patch new file mode 100644 index 0000000..cbe1230 --- /dev/null +++ b/meta-oe/recipes-devtools/gcc/gcc-4.5/gcc-scalar-widening-pr45847.patch @@ -0,0 +1,63 @@ +Hi, + +The attached patch fixes Bugzilla 45847 +(http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45847). When compiling +without -mvectorize-with-neon-quad and vectorizing scalar widening +operations that widen words to double words, there are no corresponding +vector types for DI scalar types. For this scenario, a call to +get_vect_type_for_scalar_type() returns NULL and an absent NULL-check +caused this segfault. The attached patch adds this NULL-check. Also, +this is consistent with all the other places where a NULL-check follows +a call to get_vect_type_for_scalar_type() in tree-vect-patterns.c. + +Regression tested with arm-linux-gnueabi. OK? + +-- +Tejas Belagod +ARM. + +gcc/ + +2010-10-05 Tejas Belagod <tejas.belagod@arm.com> + + * tree-vect-patterns.c (vect_recog_widen_mult_pattern): Add NULL + check for vectype_out returned by get_vectype_for_scalar_type(). + +testsuite/ + +2010-10-05 Tejas Belagod <tejas.belagod@arm.com> + + * gcc.dg/vect/pr45847.c: New test. + +Index: gcc-4.5/gcc/testsuite/gcc.dg/vect/pr45847.c +=================================================================== +--- /dev/null ++++ gcc-4.5/gcc/testsuite/gcc.dg/vect/pr45847.c +@@ -0,0 +1,15 @@ ++/* { dg-do compile } */ ++ ++ ++long long foo (long long *__restrict a, int *__restrict b, int *__restrict c ) ++{ ++ int i; ++ long long sum=0; ++ for (i=0;i<256;i++) ++ sum += (long long)b[i] * c[i]; ++ ++ return sum; ++} ++ ++/* { dg-final { cleanup-tree-dump "vect" } } */ ++ +Index: gcc-4.5/gcc/tree-vect-patterns.c +=================================================================== +--- gcc-4.5.orig/gcc/tree-vect-patterns.c ++++ gcc-4.5/gcc/tree-vect-patterns.c +@@ -411,6 +411,7 @@ vect_recog_widen_mult_pattern (gimple la + /* Check target support */ + vectype = get_vectype_for_scalar_type (half_type0); + if (!vectype ++ || !get_vectype_for_scalar_type (type) + || !supportable_widening_operation (WIDEN_MULT_EXPR, last_stmt, vectype, + &dummy, &dummy, &dummy_code, + &dummy_code, &dummy_int, &dummy_vec)) |
