https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99744
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
in ix86_can_inline_p
----
static bool
ix86_can_inline_p (tree caller, tree callee)
{
tree caller_tree = DECL_FUNCTION_SPECIFIC_TARGET (caller);
tree callee_tree = DECL_FUNCTION_SPECIFIC_TARGET (callee);
...
if (!callee_tree)
callee_tree = target_option_default_node;
if (!caller_tree)
caller_tree = target_option_default_node;
if (callee_tree == caller_tree)
return true;
----
caller_tree is like:
-m64 -mfxsr -m128bit-long-double -mfp-ret-in-387 -mieee-fp
-mno-fancy-math-387 -mtls-direct-seg-refs -mvzeroupper -mstv
-mgeneral-regs-only -mfpmath=387
callee_tree is null, then it's assigned with target_option_default_node which
is like
-m64 -msse2 -msse -mmmx -mfxsr -m128bit-long-double -m80387 -mfp-ret-in-387
-mieee-fp -mtls-direct-seg-refs -mvzeroupper -mstv -mfpmath=sse
So should it's safe to inline when callee_tree is null?
