[PATCH] tree-optimization/95403 - guard vect_init_vector_1 against NULL stmt_info
Richard Biener
rguenther@suse.de
Fri May 29 09:02:18 GMT 2020
Bootstrapped / tested on x86_64-unknown-linux-gnu, applied.
2020-05-29 Richard Biener <rguenther@suse.de>
PR tree-optimization/95403
* tree-vect-stmts.c (vect_init_vector_1): Guard against NULL
stmt_vinfo.
* gfortran.dg/vect/pr95403.f: New testcase.
---
gcc/testsuite/gfortran.dg/vect/pr95403.f | 16 ++++++++++++++++
gcc/tree-vect-stmts.c | 2 +-
2 files changed, 17 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gfortran.dg/vect/pr95403.f
diff --git a/gcc/testsuite/gfortran.dg/vect/pr95403.f b/gcc/testsuite/gfortran.dg/vect/pr95403.f
new file mode 100644
index 00000000000..248958b524c
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/vect/pr95403.f
@@ -0,0 +1,16 @@
+! { dg-do compile }
+ subroutine deuldlag(xi,et,ze,xlag,xeul,xj,xs)
+ real*8 shp(3,20),xs(3,3),xlag(3,20),xeul(3,20)
+ do i=1,3
+ do j=1,3
+ enddo
+ enddo
+ do i=1,3
+ do j=1,3
+ xs(i,j)=0.d0
+ do k=1,20
+ xs(i,j)=xs(i,j)+xeul(i,k)*shp(j,k)
+ enddo
+ enddo
+ enddo
+ end
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index 58fb93d740a..a5f1b52d498 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -1330,7 +1330,7 @@ vect_init_vector_1 (vec_info *vinfo, stmt_vec_info stmt_vinfo, gimple *new_stmt,
basic_block new_bb;
edge pe;
- if (nested_in_vect_loop_p (loop, stmt_vinfo))
+ if (stmt_vinfo && nested_in_vect_loop_p (loop, stmt_vinfo))
loop = loop->inner;
pe = loop_preheader_edge (loop);
--
2.26.2
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