diff options
| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2021-08-09 09:06:14 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2021-08-16 15:34:25 +0200 |
| commit | 8cdcea51c0fd753e6a652c9b236e91b3a6e0911c (patch) | |
| tree | dfcfac7563c68b9b7d4397ae649b6b8a55c2c832 /libgcc | |
| parent | be024a1285840bf2fc47fcbde32375468a92ce05 (diff) | |
| download | gcc-8cdcea51c0fd753e6a652c9b236e91b3a6e0911c.tar.gz | |
gcov: Add TARGET_GCOV_TYPE_SIZE target hook
If -fprofile-update=atomic is used, then the target must provide atomic
operations for the counters of the type returned by get_gcov_type().
This is a 64-bit type for targets which have a 64-bit long long type.
On 32-bit targets this could be an issue since they may not provide
64-bit atomic operations. Allow targets to override the default type
size with the new TARGET_GCOV_TYPE_SIZE target hook.
If a 32-bit gcov type size is used, then there is currently a warning in
libgcov-driver.c in a dead code block due to
sizeof (counter) == sizeof (gcov_unsigned_t):
libgcc/libgcov-driver.c: In function 'dump_counter':
libgcc/libgcov-driver.c:401:46: warning: right shift count >= width of type [-Wshift-count-overflow]
401 | dump_unsigned ((gcov_unsigned_t)(counter >> 32), dump_fn, arg);
| ^~
gcc/c-family/
* c-cppbuiltin.c (c_cpp_builtins): Define
__LIBGCC_GCOV_TYPE_SIZE if flag_building_libgcc is true.
gcc/
* config/sparc/rtemself.h (SPARC_GCOV_TYPE_SIZE): Define.
* config/sparc/sparc.c (sparc_gcov_type_size): New.
(TARGET_GCOV_TYPE_SIZE): Redefine if SPARC_GCOV_TYPE_SIZE is defined.
* coverage.c (get_gcov_type): Use targetm.gcov_type_size().
* doc/tm.texi (TARGET_GCOV_TYPE_SIZE): Add hook under "Misc".
* doc/tm.texi.in: Regenerate.
* target.def (gcov_type_size): New target hook.
* targhooks.c (default_gcov_type_size): New.
* targhooks.h (default_gcov_type_size): Declare.
* tree-profile.c (gimple_gen_edge_profiler): Use precision of
gcov_type_node.
(gimple_gen_time_profiler): Likewise.
libgcc/
* libgcov.h (gcov_type): Define using __LIBGCC_GCOV_TYPE_SIZE.
(gcov_type_unsigned): Likewise.
Diffstat (limited to 'libgcc')
| -rw-r--r-- | libgcc/libgcov.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libgcc/libgcov.h b/libgcc/libgcov.h index 9c537253293..f6354a7a070 100644 --- a/libgcc/libgcov.h +++ b/libgcc/libgcov.h @@ -52,7 +52,7 @@ #if __CHAR_BIT__ == 8 typedef unsigned gcov_unsigned_t __attribute__ ((mode (SI))); typedef unsigned gcov_position_t __attribute__ ((mode (SI))); -#if LONG_LONG_TYPE_SIZE > 32 +#if __LIBGCC_GCOV_TYPE_SIZE > 32 typedef signed gcov_type __attribute__ ((mode (DI))); typedef unsigned gcov_type_unsigned __attribute__ ((mode (DI))); #else @@ -63,7 +63,7 @@ typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI))); #if __CHAR_BIT__ == 16 typedef unsigned gcov_unsigned_t __attribute__ ((mode (HI))); typedef unsigned gcov_position_t __attribute__ ((mode (HI))); -#if LONG_LONG_TYPE_SIZE > 32 +#if __LIBGCC_GCOV_TYPE_SIZE > 32 typedef signed gcov_type __attribute__ ((mode (SI))); typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI))); #else @@ -73,7 +73,7 @@ typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI))); #else typedef unsigned gcov_unsigned_t __attribute__ ((mode (QI))); typedef unsigned gcov_position_t __attribute__ ((mode (QI))); -#if LONG_LONG_TYPE_SIZE > 32 +#if __LIBGCC_GCOV_TYPE_SIZE > 32 typedef signed gcov_type __attribute__ ((mode (HI))); typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI))); #else |