diff options
| author | Richard Biener <rguenther@suse.de> | 2020-12-08 09:56:53 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2020-12-08 10:36:47 +0100 |
| commit | c2c198bfd1e747b761c6b9b13417685bd4378d57 (patch) | |
| tree | 264205201bfc13b04b095968cbabcb25aa997217 | |
| parent | a294e6368f80ac27c5150414027d1cf2a21bd9b7 (diff) | |
| download | gcc-c2c198bfd1e747b761c6b9b13417685bd4378d57.zip gcc-c2c198bfd1e747b761c6b9b13417685bd4378d57.tar.gz gcc-c2c198bfd1e747b761c6b9b13417685bd4378d57.tar.bz2 | |
tree-optimization/98191 - fix BIT_INSERT_EXPR sequence vectorization
This adds a missing check.
2020-12-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/98191
* tree-vect-slp.c (vect_slp_check_for_constructors): Do not
follow a non-SSA def chain.
* gcc.dg/torture/pr98191.c: New testcase.
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr98191.c | 10 | ||||
| -rw-r--r-- | gcc/tree-vect-slp.c | 3 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/testsuite/gcc.dg/torture/pr98191.c b/gcc/testsuite/gcc.dg/torture/pr98191.c new file mode 100644 index 0000000..93cd27c --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr98191.c @@ -0,0 +1,10 @@ +/* { dg-do compile } */ + +typedef double v2df __attribute__((vector_size(2*sizeof(double)))); + +v2df foo (double *y) +{ + v2df x = (v2df){ 1.0, 2.0 }; + x[0] = *y; + return x; +} diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c index a2757e7..35e7835 100644 --- a/gcc/tree-vect-slp.c +++ b/gcc/tree-vect-slp.c @@ -4243,7 +4243,8 @@ vect_slp_check_for_constructors (bb_vec_info bb_vinfo) def = gimple_assign_rhs1 (assign); do { - if (!has_single_use (def)) + if (TREE_CODE (def) != SSA_NAME + || !has_single_use (def)) break; gimple *def_stmt = SSA_NAME_DEF_STMT (def); unsigned this_lane; |