diff options
| author | jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-03-18 15:31:18 +0000 |
|---|---|---|
| committer | jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-03-18 15:31:18 +0000 |
| commit | 77478042715db2070afd7fa06c9e8fda2b578382 (patch) | |
| tree | cd5ed786bd145577e3f779c789666215ac38bce8 | |
| parent | f41d1eba0575bf128409377062fb157d9d4e8fbf (diff) | |
* calls.c (load_register_parameters): Fix zero size sibcall logic.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@234332 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/calls.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/sibcall-11.c | 7 |
3 files changed, 14 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5be50b76802..d988be26d67 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2016-03-18 Jason Merrill <jason@redhat.com> + + * calls.c (load_register_parameters): Fix zero size sibcall logic. + 2016-03-18 Kirill Yukhin <kirill.yukhin@intel.com> * config/i386/sse.md: Use vpbroadcastq for broadcasting DF diff --git a/gcc/calls.c b/gcc/calls.c index 7b28f4315ab..6415e08b28d 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -2083,9 +2083,9 @@ load_register_parameters (struct arg_data *args, int num_actuals, /* Check for overlap with already clobbered argument area, providing that this has non-zero size. */ if (is_sibcall - && (size == 0 - || mem_overlaps_already_clobbered_arg_p - (XEXP (args[i].value, 0), size))) + && size != 0 + && (mem_overlaps_already_clobbered_arg_p + (XEXP (args[i].value, 0), size))) *sibcall_failure = 1; if (size % UNITS_PER_WORD == 0 diff --git a/gcc/testsuite/gcc.dg/sibcall-11.c b/gcc/testsuite/gcc.dg/sibcall-11.c new file mode 100644 index 00000000000..ae587708236 --- /dev/null +++ b/gcc/testsuite/gcc.dg/sibcall-11.c @@ -0,0 +1,7 @@ +// Test for sibcall optimization with empty struct. +// { dg-options "-O2" } +// { dg-final { scan-assembler "jmp" { target i?86-*-* x86_64-*-* } } } + +struct A { }; +void f(struct A); +void g(struct A a) { f(a); } |