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* [gcc r10-10699] c++: Fix up __builtin_convertvector parsing
@ 2022-05-10 8:25 Jakub Jelinek
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From: Jakub Jelinek @ 2022-05-10 8:25 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:91cc882245d7d93876d34f4d4c2e425acf48c8bb
commit r10-10699-g91cc882245d7d93876d34f4d4c2e425acf48c8bb
Author: Jakub Jelinek <jakub@redhat.com>
Date: Sat Mar 26 08:11:58 2022 +0100
c++: Fix up __builtin_convertvector parsing
Jonathan reported on IRC that we don't parse
__builtin_bit_cast (type, val).field
etc.
The problem is that for these 2 builtins we return from
cp_parser_postfix_expression instead of setting postfix_expression
to the cp_build_* value and falling through into the postfix regression
suffix handling loop.
2022-03-26 Jakub Jelinek <jakub@redhat.com>
* parser.c (cp_parser_postfix_expression)
<case RID_BILTIN_CONVERTVECTOR>: Don't
return cp_build_vec_convert result right away, instead
set postfix_expression to it and break.
* c-c++-common/builtin-convertvector-3.c: New test.
(cherry picked from commit 1806829e08f14e4cacacec43d7845cc2dad2ddc8)
Diff:
---
gcc/cp/parser.c | 6 ++++--
gcc/testsuite/c-c++-common/builtin-convertvector-3.c | 11 +++++++++++
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index f48c856fa94..61f2af34688 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -7162,8 +7162,10 @@ cp_parser_postfix_expression (cp_parser *parser, bool address_p, bool cast_p,
}
/* Look for the closing `)'. */
parens.require_close (parser);
- return cp_build_vec_convert (expression, type_location, type,
- tf_warning_or_error);
+ postfix_expression
+ = cp_build_vec_convert (expression, type_location, type,
+ tf_warning_or_error);
+ break;
}
default:
diff --git a/gcc/testsuite/c-c++-common/builtin-convertvector-3.c b/gcc/testsuite/c-c++-common/builtin-convertvector-3.c
new file mode 100644
index 00000000000..882cd551ef8
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/builtin-convertvector-3.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+typedef int v4si __attribute__((vector_size (4 * sizeof (int))));
+typedef double v4df __attribute__((vector_size (4 * sizeof (double))));
+double
+foo (void)
+{
+ v4si a = { 1, 2, 3, 4 };
+ return __builtin_convertvector (a, v4df)[1];
+}
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