target/PR118828
gcc/ChangeLog:
* config/loongarch/loongarch-c.cc (loongarch_pragma_target_parse):
Update the predefined macros.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/pr118828.c: New test.
Change-Id: I13f7b44b11bba2080db797157a0389cc1bd65ac6
---
gcc/config/loongarch/loongarch-c.cc | 14 ++++++++
gcc/testsuite/gcc.target/loongarch/pr118828.c | 34 +++++++++++++++++++
2 files changed, 48 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/loongarch/pr118828.c
diff --git a/gcc/config/loongarch/loongarch-c.cc
b/gcc/config/loongarch/loongarch-c.cc
index 9fe911325ab..83df82c1361 100644
--- a/gcc/config/loongarch/loongarch-c.cc
+++ b/gcc/config/loongarch/loongarch-c.cc
@@ -27,6 +27,7 @@ along with GCC; see the file COPYING3. If not see
#include "tm.h"
#include "c-family/c-common.h"
#include "cpplib.h"
+#include "c-family/c-pragma.h"
#include "tm_p.h"
#define preprocessing_asm_p() (cpp_get_options (pfile)->lang == CLK_ASM)
@@ -203,6 +204,19 @@ loongarch_pragma_target_parse (tree args, tree pop_target)
loongarch_reset_previous_fndecl ();
+ /* For the definitions, ensure all newly defined macros are considered
+ as used for -Wunused-macros. There is no point warning about the
+ compiler predefined macros. */
+ cpp_options *cpp_opts = cpp_get_options (parse_in);
+ unsigned char saved_warn_unused_macros = cpp_opts->warn_unused_macros;
+ cpp_opts->warn_unused_macros = 0;
+
+ cpp_force_token_locations (parse_in, BUILTINS_LOCATION);
+ loongarch_update_cpp_builtins (parse_in);
+ cpp_stop_forcing_token_locations (parse_in);
+
+ cpp_opts->warn_unused_macros = saved_warn_unused_macros;
+
/* If we're popping or reseting make sure to update the globals so that
the optab availability predicates get recomputed. */
if (pop_target)
diff --git a/gcc/testsuite/gcc.target/loongarch/pr118828.c
b/gcc/testsuite/gcc.target/loongarch/pr118828.c
new file mode 100644
index 00000000000..abdda24c758
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/pr118828.c
@@ -0,0 +1,34 @@
+/* { dg-do preprocess } */
+/* { dg-options "-mno-lasx" } */
+
+#ifdef __loongarch_asx
+#error LASX should not be available here
+#endif
+
+#ifdef __loongarch_simd_width
+#if __loongarch_simd_width == 256
+#error simd width shuold not be 256
+#endif
+#endif
+
+#pragma GCC push_options
+#pragma GCC target("lasx")
+#ifndef __loongarch_asx
+#error LASX should be available here
+#endif
+#ifndef __loongarch_simd_width
+#error simd width should be available here
+#elif __loongarch_simd_width != 256
+#error simd width should be 256
+#endif
+#pragma GCC pop_options
+
+#ifdef __loongarch_asx
+#error LASX should become unavailable again
+#endif
+
+#ifdef __loongarch_simd_width
+#if __loongarch_simd_width == 256
+#error simd width shuold not be 256 again
+#endif
+#endif
--
2.34.1
