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| author | H.J. Lu <hongjiu.lu@intel.com> | 2018-09-04 20:42:06 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2018-09-04 13:42:06 -0700 |
| commit | 6bc088ca0e315896c3efe1ed273f6a345e5418b8 (patch) | |
| tree | 3d3d5fc25fe9c14be6b2a015025f3846801904d4 /gcc/cp/except.c | |
| parent | 8f93810d3b7cc7540e31397697f5df9db18daba4 (diff) | |
| download | gcc-6bc088ca0e315896c3efe1ed273f6a345e5418b8.zip gcc-6bc088ca0e315896c3efe1ed273f6a345e5418b8.tar.gz gcc-6bc088ca0e315896c3efe1ed273f6a345e5418b8.tar.bz2 | |
DWARF: Allow hard frame pointer even if frame pointer isn't used
r251028
commit cd557ff63f388ad27c376d0a225e74d3594a6f9d
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Aug 10 15:29:05 2017 +0000
i386: Don't use frame pointer without stack access
When there is no stack access, there is no need to use frame pointer
even if -fno-omit-frame-pointer is used and caller's frame pointer is
unchanged.
frame pointer may not be available even if -fno-omit-frame-pointer is
used. When this happened, arg pointer may be eliminated by hard frame
pointer. Since hard frame pointer is encoded with DW_OP_fbreg which
uses the DW_AT_frame_base attribute, not hard frame pointer directly,
we should allow hard frame pointer when generating DWARF info even if
frame pointer isn't used.
gcc/
PR debug/86593
* dwarf2out.c (based_loc_descr): Allow hard frame pointer even
if frame pointer isn't used.
(compute_frame_pointer_to_fb_displacement): Likewise.
gcc/testsuite/
PR debug/86593
* g++.dg/pr86593.C: New test.
From-SVN: r264096
Diffstat (limited to 'gcc/cp/except.c')
0 files changed, 0 insertions, 0 deletions