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| author | Sandra Loosemore <sandra@codesourcery.com> | 2012-07-25 14:08:06 -0400 |
|---|---|---|
| committer | Sandra Loosemore <sandra@gcc.gnu.org> | 2012-07-25 14:08:06 -0400 |
| commit | d45eae79db3e8c41ac1f307b267179498a636e0b (patch) | |
| tree | f42803034e2d99c0fb7f313962516557837e0a57 /gcc/config/avr/avr.c | |
| parent | 62732c3044c767f4efcff0cd398c9e65ba437bda (diff) | |
| download | gcc-d45eae79db3e8c41ac1f307b267179498a636e0b.zip gcc-d45eae79db3e8c41ac1f307b267179498a636e0b.tar.gz gcc-d45eae79db3e8c41ac1f307b267179498a636e0b.tar.bz2 | |
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/config/avr/avr.c')
| -rw-r--r-- | gcc/config/avr/avr.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/config/avr/avr.c b/gcc/config/avr/avr.c index 68048b6..e0d2e82 100644 --- a/gcc/config/avr/avr.c +++ b/gcc/config/avr/avr.c @@ -686,6 +686,17 @@ avr_can_eliminate (const int from, const int to) && !frame_pointer_needed)); } + +/* Implement TARGET_WARN_FUNC_RETURN. */ + +static bool +avr_warn_func_return (tree decl) +{ + /* Naked functions are implemented entirely in assembly, including the + return sequence, so suppress warnings about this. */ + return !avr_naked_function_p (decl); +} + /* Compute offset between arg_pointer and frame_pointer. */ int @@ -10790,6 +10801,9 @@ avr_fold_builtin (tree fndecl, int n_args ATTRIBUTE_UNUSED, tree *arg, #undef TARGET_CAN_ELIMINATE #define TARGET_CAN_ELIMINATE avr_can_eliminate +#undef TARGET_WARN_FUNC_RETURN +#define TARGET_WARN_FUNC_RETURN avr_warn_func_return + #undef TARGET_CLASS_LIKELY_SPILLED_P #define TARGET_CLASS_LIKELY_SPILLED_P avr_class_likely_spilled_p |