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authorSandra Loosemore <sandra@codesourcery.com>2012-07-25 14:08:06 -0400
committerSandra Loosemore <sandra@gcc.gnu.org>2012-07-25 14:08:06 -0400
commitd45eae79db3e8c41ac1f307b267179498a636e0b (patch)
treef42803034e2d99c0fb7f313962516557837e0a57 /gcc/doc
parent62732c3044c767f4efcff0cd398c9e65ba437bda (diff)
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re PR target/53633 (__attribute__((naked)) should disable -Wreturn-type)
2012-07-25 Sandra Loosemore <sandra@codesourcery.com> Paul Brook <paul@codesourcery.com> PR target/53633 gcc/ * target.def (warn_func_return): New hook. * doc/tm.texi.in (TARGET_WARN_FUNC_RETURN): New hook. * doc/tm.texi: Regenerate. * doc/sourcebuild.texi (Effective-Target Keywords): Document naked_functions. * ipa-pure-const.c (warn_function_noreturn): Check targetm.warn_func_return. * tree-cfg.c (execute_warn_function_return): Likewise. * config/spu/spu.c (spu_warn_func_return): New. (TARGET_WARN_FUNC_RETURN): Define. * config/rx/rx.c (rx_warn_func_return): New. (TARGET_WARN_FUNC_RETURN): Define. * config/avr/avr.c (avr_warn_func_return): New. (TARGET_WARN_FUNC_RETURN): Define. * config/arm/arm.c (arm_warn_func_return): New. (TARGET_WARN_FUNC_RETURN): Define. * config/mcore/mcore.c (mcore_warn_func_return): New. (TARGET_WARN_FUNC_RETURN): Define. (saved_warn_return_type, saved_warn_return_type_count): Remove. (mcore_reorg, mcore_handle_naked_attribute): Remove warn_return hack. gcc/cp/ * decl.c (finish_function): Check targetm.warn_func_return. gcc/testsuite/ * lib/target-suports.exp (check_effective_target_naked_functions): New. * c-c++-common/pr53633.c: New test. Co-Authored-By: Paul Brook <paul@codesourcery.com> From-SVN: r189860
Diffstat (limited to 'gcc/doc')
-rw-r--r--gcc/doc/sourcebuild.texi3
-rw-r--r--gcc/doc/tm.texi4
-rw-r--r--gcc/doc/tm.texi.in2
3 files changed, 9 insertions, 0 deletions
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index 44c2842..43afa00 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -1787,6 +1787,9 @@ Target keeps null pointer checks, either due to the use of
@item lto
Compiler has been configured to support link-time optimization (LTO).
+@item naked_functions
+Target supports the @code{naked} function attribute.
+
@item named_sections
Target supports named sections.
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index d1a27f8..b419a71 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -4977,6 +4977,10 @@ FRAME_POINTER_REGNUM, ARG_POINTER_REGNUM, and the PIC_OFFSET_TABLE_REGNUM.
This hook should add additional registers that are computed by the prologue to the hard regset for shrink-wrapping optimization purposes.
@end deftypefn
+@deftypefn {Target Hook} bool TARGET_WARN_FUNC_RETURN (tree)
+True if a function's return statements should be checked for matching the function's return type. This includes checking for falling off the end of a non-void function. Return false if no such check should be made.
+@end deftypefn
+
@node Stack Smashing Protection
@subsection Stack smashing protection
@cindex stack smashing protection
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index 85d9d1d..3f2ef1e 100644
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -4918,6 +4918,8 @@ FRAME_POINTER_REGNUM, ARG_POINTER_REGNUM, and the PIC_OFFSET_TABLE_REGNUM.
@hook TARGET_SET_UP_BY_PROLOGUE
+@hook TARGET_WARN_FUNC_RETURN
+
@node Stack Smashing Protection
@subsection Stack smashing protection
@cindex stack smashing protection