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| author | Cary Coutant <ccoutant@gmail.com> | 2017-02-15 00:25:29 -0800 |
|---|---|---|
| committer | Cary Coutant <ccoutant@gmail.com> | 2017-12-01 23:46:03 -0800 |
| commit | 158600eb989bcbc364c6d18259f1cb32ea9dc478 (patch) | |
| tree | 2e056287d85a96d63be8a078e21c6d32bfa8b7b5 /gold/options.cc | |
| parent | 0af4ccfc5bc7ded4d87f813e3754486eb5a75349 (diff) | |
| download | gdb-158600eb989bcbc364c6d18259f1cb32ea9dc478.zip gdb-158600eb989bcbc364c6d18259f1cb32ea9dc478.tar.gz gdb-158600eb989bcbc364c6d18259f1cb32ea9dc478.tar.bz2 | |
Disallow --incremental with -pie and force -no-pie for incremental tests.
This is a partial fix for the gold testsuite failures documented in
PR 21090. The use of -fpie triggers some mov-to-lea optimizations that
are not compatible with incremental linking, so those optimizations need
to be disabled. We also diagnose the attempt to use -pie with incremental
linking, and force -no-pie for the incremental tests in case the build has
been configured to have GCC pass -pie all the time.
We still have a problem where compiling with -fpie results in some GOT
entries even when linking with -no-pie. This combination still causes test
failures because we are not updating the GOT entries in an incremental update
link.
gold/
PR gold/21090
* incremental.cc (Sized_relobj_incr::do_relocate): Fix comment.
* options.cc (General_options::finalize): Disallow -pie with
incremental linking.
* x86_64.cc (Target_x86_64::Scan::local): Don't do mov-to-lea
or callq-to-direct optimizations for incremental links.
(Target_x86_64::Scan::global): Likewise.
(Target_x86_64::Relocate::relocate): Likewise.
* testsuite/Makefile.am (incremental_test): Force -no-pie.
(incremental_test_2): Likewise.
(incremental_test_3): Likewise.
(incremental_test_4): Likewise.
(incremental_test_5): Likewise.
(incremental_test_6): Likewise.
(incremental_copy_test): Likewise.
(incremental_common_test_1): Likewise.
(incremental_comdat_test_1): Likewise.
* testsuite/Makefile.in: Regenerate.
Diffstat (limited to 'gold/options.cc')
| -rw-r--r-- | gold/options.cc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gold/options.cc b/gold/options.cc index f54fb9b..21b95e3 100644 --- a/gold/options.cc +++ b/gold/options.cc @@ -1343,6 +1343,8 @@ General_options::finalize() gold_fatal(_("incremental linking is not compatible with --plugin")); if (this->relro()) gold_fatal(_("incremental linking is not compatible with -z relro")); + if (this->pie()) + gold_fatal(_("incremental linking is not compatible with -pie")); if (this->gc_sections()) { gold_warning(_("ignoring --gc-sections for an incremental link")); |