------- Comment #15 from dfranke at gcc dot gnu dot org 2008-07-03 18:59
-------
> Your challenge is now to produce a testcase from your source ;)
I do have a testcase that shows said flags. The difference in assembler between
-foptimize-sibling-calls and -fno-optimize-sibling-calls is:
--- without.s 2008-07-03 20:51:59.000000000 +0200
+++ with.s 2008-07-03 20:52:26.000000000 +0200
@@ -64,10 +64,9 @@
movq %rsp, %rdi
call dummy_atom_model_inertia_tensor_
movq %rsp, %rdi
- call inertia_tensor_to_rg_
addq $80, %rsp
popq %rbx
- ret
+ jmp inertia_tensor_to_rg_
.LFE2:
.size dummy_atom_model_radius_of_gyration_,
.-dummy_atom_model_radius_of_gyration_
.section .eh_frame,"a",@progbits
Is this correct? Running the code compiled with -foptimize-sibling-calls seems
to yield the correct result. Not sure if I need to investigate further.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36713
