diff options
| author | marxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-02-11 13:33:47 +0000 |
|---|---|---|
| committer | marxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-02-11 13:33:47 +0000 |
| commit | e9a9dc0931b409f259957ea331ce42e1760ff21f (patch) | |
| tree | 81e26b69e9721be6b9ce0cea3e83f9f11043cfb2 | |
| parent | 108b3f6e9846ba53f9791b81294e69acf3ea7ace (diff) | |
| download | gcc-e9a9dc0931b409f259957ea331ce42e1760ff21f.tar.gz | |
Handle noreturn function thunk creation.
PR ipa/64813
* cgraphunit.c (cgraph_node::expand_thunk): Do not create
a return value for call to a function that is noreturn.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@220616 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cgraphunit.c | 7 |
2 files changed, 10 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 08d430f80f9..eab5cdba8f8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-02-11 Martin Liska <mliska@suse.cz> + + PR ipa/64813 + * cgraphunit.c (cgraph_node::expand_thunk): Do not create + a return value for call to a function that is noreturn. + 2015-02-11 Richard Biener <rguenther@suse.de> PR lto/65015 diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c index 48a4b35a938..f2c40d43d71 100644 --- a/gcc/cgraphunit.c +++ b/gcc/cgraphunit.c @@ -1580,6 +1580,7 @@ cgraph_node::expand_thunk (bool output_asm_thunks, bool force_gimple_thunk) gcall *call; greturn *ret; + bool alias_is_noreturn = TREE_THIS_VOLATILE (alias); if (in_lto_p) get_untransformed_body (); @@ -1616,7 +1617,7 @@ cgraph_node::expand_thunk (bool output_asm_thunks, bool force_gimple_thunk) bsi = gsi_start_bb (bb); /* Build call to the function being thunked. */ - if (!VOID_TYPE_P (restype)) + if (!VOID_TYPE_P (restype) && !alias_is_noreturn) { if (DECL_BY_REFERENCE (resdecl)) { @@ -1675,14 +1676,14 @@ cgraph_node::expand_thunk (bool output_asm_thunks, bool force_gimple_thunk) callees->call_stmt = call; gimple_call_set_from_thunk (call, true); gimple_call_set_with_bounds (call, instrumentation_clone); - if (restmp) + if (restmp && !alias_is_noreturn) { gimple_call_set_lhs (call, restmp); gcc_assert (useless_type_conversion_p (TREE_TYPE (restmp), TREE_TYPE (TREE_TYPE (alias)))); } gsi_insert_after (&bsi, call, GSI_NEW_STMT); - if (!(gimple_call_flags (call) & ECF_NORETURN)) + if (!alias_is_noreturn) { if (restmp && !this_adjusting && (fixed_offset || virtual_offset)) |