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| author | Jakub Jelinek <jakub@redhat.com> | 2018-12-07 00:41:04 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-12-07 00:41:04 +0100 |
| commit | 820037ecf679ce5cadb5c91e07cfad2d6d57cf0c (patch) | |
| tree | ccafd9c67b17129cb2f511f4ef2abe536c52cfaa /gcc/final.c | |
| parent | 1e41b184480fb990c432624b5f698012fb0649e1 (diff) | |
| download | gcc-820037ecf679ce5cadb5c91e07cfad2d6d57cf0c.zip gcc-820037ecf679ce5cadb5c91e07cfad2d6d57cf0c.tar.gz gcc-820037ecf679ce5cadb5c91e07cfad2d6d57cf0c.tar.bz2 | |
re PR target/85593 (GCC on ARM allocates R3 for local variable when calling naked function with O2 optimizations enabled)
PR target/85593
* final.c (rest_of_handle_final): Don't call collect_fn_hard_reg_usage
for functions with naked attribute.
* gcc.target/i386/pr85593.c: New test.
From-SVN: r266881
Diffstat (limited to 'gcc/final.c')
| -rw-r--r-- | gcc/final.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/final.c b/gcc/final.c index f707d2f..4233181 100644 --- a/gcc/final.c +++ b/gcc/final.c @@ -4659,7 +4659,11 @@ rest_of_handle_final (void) final_start_function_1 (&first, asm_out_file, &seen, optimize); final_1 (first, asm_out_file, seen, optimize); if (flag_ipa_ra - && !lookup_attribute ("noipa", DECL_ATTRIBUTES (current_function_decl))) + && !lookup_attribute ("noipa", DECL_ATTRIBUTES (current_function_decl)) + /* Functions with naked attributes are supported only with basic asm + statements in the body, thus for supported use cases the information + on clobbered registers is not available. */ + && !lookup_attribute ("naked", DECL_ATTRIBUTES (current_function_decl))) collect_fn_hard_reg_usage (); final_end_function (); |