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| author | Jakub Jelinek <jakub@redhat.com> | 2022-06-17 17:40:49 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2022-06-17 17:40:49 +0200 |
| commit | a284fadcce8ef443cc3cc047a8017745efb51758 (patch) | |
| tree | 737d64112ba8671d790579884f1e70b0ac9be8c1 | |
| parent | cc378e655740e93743e7f43e14faaff707aef6c1 (diff) | |
| download | gcc-a284fadcce8ef443cc3cc047a8017745efb51758.zip gcc-a284fadcce8ef443cc3cc047a8017745efb51758.tar.gz gcc-a284fadcce8ef443cc3cc047a8017745efb51758.tar.bz2 | |
c++: Use fold_non_dependent_expr rather than maybe_constant_value in __builtin_shufflevector handling [PR106001]
In this case the STATIC_CAST_EXPR expressions in the call aren't
type nor value dependent, but maybe_constant_value still ICEs on those
when processing_template_decl. Calling fold_non_dependent_expr on it
instead fixes the ICE and folds them to INTEGER_CSTs.
2022-06-17 Jakub Jelinek <jakub@redhat.com>
PR c++/106001
* typeck.cc (build_x_shufflevector): Use fold_non_dependent_expr
instead of maybe_constant_value.
* g++.dg/ext/builtin-shufflevector-4.C: New test.
| -rw-r--r-- | gcc/cp/typeck.cc | 2 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/ext/builtin-shufflevector-4.C | 18 |
2 files changed, 19 insertions, 1 deletions
diff --git a/gcc/cp/typeck.cc b/gcc/cp/typeck.cc index f9ce14f..6e4f23a 100644 --- a/gcc/cp/typeck.cc +++ b/gcc/cp/typeck.cc @@ -6344,7 +6344,7 @@ build_x_shufflevector (location_t loc, vec<tree, va_gc> *args, auto_vec<tree, 16> mask; for (unsigned i = 2; i < args->length (); ++i) { - tree idx = maybe_constant_value ((*args)[i]); + tree idx = fold_non_dependent_expr ((*args)[i], complain); mask.safe_push (idx); } tree exp = c_build_shufflevector (loc, arg0, arg1, mask, complain & tf_error); diff --git a/gcc/testsuite/g++.dg/ext/builtin-shufflevector-4.C b/gcc/testsuite/g++.dg/ext/builtin-shufflevector-4.C new file mode 100644 index 0000000..dae129b --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/builtin-shufflevector-4.C @@ -0,0 +1,18 @@ +// PR c++/106001 +// { dg-do compile } + +typedef int V __attribute__((vector_size (2 * sizeof (int)))); + +template <int> +void +foo () +{ + V v = {}; + v = __builtin_shufflevector (v, v, static_cast<char>(1), static_cast<char>(0)); +} + +void +bar () +{ + foo <0> (); +} |