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| author | David Daney <ddaney@caviumnetworks.com> | 2009-06-11 23:55:45 +0000 |
|---|---|---|
| committer | David Daney <daney@gcc.gnu.org> | 2009-06-11 23:55:45 +0000 |
| commit | 468059bcbb8efdb31fd90369dc2ed122126413fe (patch) | |
| tree | 33e26cb48c7e5455995d1edba975d67cf78cad99 /gcc/builtins.def | |
| parent | f43def61eaf4f2e1f73c5af6ad806955b8f09949 (diff) | |
| download | gcc-468059bcbb8efdb31fd90369dc2ed122126413fe.zip gcc-468059bcbb8efdb31fd90369dc2ed122126413fe.tar.gz gcc-468059bcbb8efdb31fd90369dc2ed122126413fe.tar.bz2 | |
re PR c/39252 (Request new feature __builtin_unreachable ())
2009-06-11 David Daney <ddaney@caviumnetworks.com>
PR c/39252
* doc/extend.texi ( __builtin_unreachable): Document new builtin.
* builtins.c (expand_builtin_unreachable): New function.
(expand_builtin): Handle BUILT_IN_UNREACHABLE case.
* builtins.def (BUILT_IN_UNREACHABLE): Add new builtin.
* cfgcleanup.c (try_optimize_cfg): Delete empty blocks with no
successors.
* cfgrtl.c (rtl_verify_flow_info): Handle empty blocks when
searching for missing barriers.
2009-06-11 David Daney <ddaney@caviumnetworks.com>
PR c/39252
* gcc.dg/builtin-unreachable-1.c: New test.
* gcc.dg/builtin-unreachable-2.c: Same.
From-SVN: r148403
Diffstat (limited to 'gcc/builtins.def')
| -rw-r--r-- | gcc/builtins.def | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/builtins.def b/gcc/builtins.def index 3f4e251..8d16936 100644 --- a/gcc/builtins.def +++ b/gcc/builtins.def @@ -698,6 +698,7 @@ DEF_GCC_BUILTIN (BUILT_IN_SETJMP, "setjmp", BT_FN_INT_PTR, ATTR_NULL) DEF_EXT_LIB_BUILTIN (BUILT_IN_STRFMON, "strfmon", BT_FN_SSIZE_STRING_SIZE_CONST_STRING_VAR, ATTR_FORMAT_STRFMON_NOTHROW_3_4) DEF_LIB_BUILTIN (BUILT_IN_STRFTIME, "strftime", BT_FN_SIZE_STRING_SIZE_CONST_STRING_CONST_PTR, ATTR_FORMAT_STRFTIME_NOTHROW_3_0) DEF_GCC_BUILTIN (BUILT_IN_TRAP, "trap", BT_FN_VOID, ATTR_NORETURN_NOTHROW_LIST) +DEF_GCC_BUILTIN (BUILT_IN_UNREACHABLE, "unreachable", BT_FN_VOID, ATTR_NORETURN_NOTHROW_LIST) DEF_GCC_BUILTIN (BUILT_IN_UNWIND_INIT, "unwind_init", BT_FN_VOID, ATTR_NULL) DEF_GCC_BUILTIN (BUILT_IN_UPDATE_SETJMP_BUF, "update_setjmp_buf", BT_FN_VOID_PTR_INT, ATTR_NULL) DEF_GCC_BUILTIN (BUILT_IN_VA_COPY, "va_copy", BT_FN_VOID_VALIST_REF_VALIST_ARG, ATTR_NOTHROW_LIST) |