https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90765
--- Comment #1 from hjl at gcc dot gnu.org ---
Author: hjl
Date: Fri Jun 14 16:24:56 2019
New Revision: 272296
URL: https://gcc.gnu.org/viewcvs?rev=272296=gcc=rev
Log:
Update preferred_stack_boundary only when expanding function call
locate_and_pad_parm is called when expanding function call from
initialize_argument_information and when generating function body
from assign_parm_find_entry_rtl:
/* Remember if the outgoing parameter requires extra alignment on the
calling function side. */
if (crtl->stack_alignment_needed < boundary)
crtl->stack_alignment_needed = boundary;
if (crtl->preferred_stack_boundary < boundary)
crtl->preferred_stack_boundary = boundary;
stack_alignment_needed and preferred_stack_boundary should be updated
only when expanding function call, not when generating function body.
Add update_stack_alignment_for_call to update stack alignment when
outgoing parameter is passed in the stack.
gcc/
PR rtl-optimization/90765
* calls.c (update_stack_alignment_for_call): New function.
(expand_call): Call update_stack_alignment_for_call when
outgoing parameter is passed in the stack.
(emit_library_call_value_1): Likewise.
* function.c (locate_and_pad_parm): Don't update
stack_alignment_needed and preferred_stack_boundary.
gcc/testsuite/
PR rtl-optimization/90765
* gcc.target/i386/pr90765-1.c: New test.
* gcc.target/i386/pr90765-2.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr90765-1.c
trunk/gcc/testsuite/gcc.target/i386/pr90765-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/calls.c
trunk/gcc/function.c
trunk/gcc/testsuite/ChangeLog
