Add __attribute__((__simd__)) to GCC.

gcc/
	* omp-low.c (pass_omp_simd_clone::gate): If target allows - call
	without additional conditions.
	* doc/extend.texi (@item simd): New.
gcc/c-family/
	* c-common.c (handle_simd_attribute): New.
	(struct attribute_spec): Add entry for "simd".
	(handle_simd_attribute): New.
gcc/c/
	* c-parser.c (c_finish_omp_declare_simd): Look for
	"simd" attribute as well. Update error message.
gcc/cp/
	* parser.c (cp_parser_late_parsing_cilk_simd_fn_info): Look for
	"simd" attribute as well. Update error message.
gcc/testsuite/
	* c-c++-common/attr-simd.c: New test.
	* c-c++-common/attr-simd-2.c: New test.
	* c-c++-common/attr-simd-3.c: New test.

From-SVN: r230422

3 files changed, 64 insertions, 0 deletions

diff --git a/gcc/testsuite/c-c++-common/attr-simd-2.c b/gcc/testsuite/c-c++-common/attr-simd-2.c
new file mode 100644
index 0000000..dd08d18
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/attr-simd-2.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-optimized -fopenmp-simd" } */
+
+#pragma omp declare simd
+extern
+#ifdef __cplusplus
+"C"
+#endif
+__attribute__((__simd__))
+int simd_attr (void)
+{
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump "omp declare simd" "optimized" } } */
+/* { dg-final { scan-assembler-times "_ZGVbN4_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVbM4_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVcN4_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVcM4_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVdN8_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVdM8_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
diff --git a/gcc/testsuite/c-c++-common/attr-simd-3.c b/gcc/testsuite/c-c++-common/attr-simd-3.c
new file mode 100644
index 0000000..2bbdf04
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/attr-simd-3.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-options "-fcilkplus" } */
+/* { dg-prune-output "undeclared here \\(not in a function\\)|\[^\n\r\]* was not declared in this scope" } */
+
+void f () __attribute__((__simd__, __vector__)); /* { dg-error "in the same function marked as a Cilk Plus" } */
diff --git a/gcc/testsuite/c-c++-common/attr-simd.c b/gcc/testsuite/c-c++-common/attr-simd.c
new file mode 100644
index 0000000..61974e3
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/attr-simd.c
@@ -0,0 +1,38 @@
+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-optimized" } */
+
+extern
+#ifdef __cplusplus
+"C"
+#endif
+__attribute__((__simd__))
+int simd_attr (void)
+{
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump "simd_attr\[ \\t\]simdclone|vector" "optimized" } } */
+/* { dg-final { scan-assembler-times "_ZGVbN4_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVbM4_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVcN4_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVcM4_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVdN8_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVdM8_simd_attr:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+
+extern
+#ifdef __cplusplus
+"C"
+#endif
+__attribute__((simd))
+int simd_attr2 (void)
+{
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump "simd_attr2\[ \\t\]simdclone|vector" "optimized" } } */
+/* { dg-final { scan-assembler-times "_ZGVbN4_simd_attr2:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVbM4_simd_attr2:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVcN4_simd_attr2:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVcM4_simd_attr2:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVdN8_simd_attr2:" 1 { target { i?86-*-* x86_64-*-* } } } } */
+/* { dg-final { scan-assembler-times "_ZGVdM8_simd_attr2:" 1 { target { i?86-*-* x86_64-*-* } } } } */