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Handle noreturn function thunk creation.

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PR ipa/64813
	* cgraphunit.c (cgraph_node::expand_thunk): Do not create
	a return value for call to a function that is noreturn.

From-SVN: r220616
This commit is contained in:
Martin Liska 2015-02-11 14:33:47 +01:00 • committed by Martin Liska
parent ece70d335d
commit c43ade8004
2 changed files with 10 additions and 3 deletions
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6
gcc/ChangeLog
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@ -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

7
gcc/cgraphunit.c
View file

@ -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))