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| author | Sriraman Tallam <tmsriram@google.com> | 2010-09-28 17:14:15 +0000 |
|---|---|---|
| committer | Sriraman Tallam <tmsriram@google.com> | 2010-09-28 17:14:15 +0000 |
| commit | c95e9f279130c09af2c427065700e3e08500b168 (patch) | |
| tree | 78e7735b04680083b0cbc1d67e17d4c024dae2cd /gold | |
| parent | 22e603ef762487e8a761d443a94168493a46db25 (diff) | |
| download | gdb-c95e9f279130c09af2c427065700e3e08500b168.zip gdb-c95e9f279130c09af2c427065700e3e08500b168.tar.gz gdb-c95e9f279130c09af2c427065700e3e08500b168.tar.bz2 | |
2010-09-28 Sriraman Tallam <tmsriram@google.com>
* target.h (Target::can_icf_inline_merge_sections): New virtual
function.
* x86_64.cc (Target__x86_64::can_icf_inline_merge_sections): New
virtual function.
* i386.cc (Target_i386::can_icf_inline_merge_sections): New
virtual function.
* icf.cc (get_section_contents): Inline merge sections only when
target allows it.
Diffstat (limited to 'gold')
| -rw-r--r-- | gold/ChangeLog | 11 | ||||
| -rw-r--r-- | gold/i386.cc | 4 | ||||
| -rw-r--r-- | gold/icf.cc | 3 | ||||
| -rw-r--r-- | gold/target.h | 7 | ||||
| -rw-r--r-- | gold/x86_64.cc | 4 |
5 files changed, 28 insertions, 1 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog index bdc600f..a42330b 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -1,3 +1,14 @@ +2010-09-28 Sriraman Tallam <tmsriram@google.com> + + * target.h (Target::can_icf_inline_merge_sections): New virtual + function. + * x86_64.cc (Target__x86_64::can_icf_inline_merge_sections): New + virtual function. + * i386.cc (Target_i386::can_icf_inline_merge_sections): New + virtual function. + * icf.cc (get_section_contents): Inline merge sections only when + target allows it. + 2010-09-27 Ralf Wildenhues <Ralf.Wildenhues@gmx.de> * configure: Regenerate. diff --git a/gold/i386.cc b/gold/i386.cc index 009f217..693ae4c 100644 --- a/gold/i386.cc +++ b/gold/i386.cc @@ -175,6 +175,10 @@ class Target_i386 : public Target_freebsd<32, false> can_check_for_function_pointers() const { return true; } + virtual bool + can_icf_inline_merge_sections () const + { return true; } + // Process the relocations to determine unreferenced sections for // garbage collection. void diff --git a/gold/icf.cc b/gold/icf.cc index 31312bb..09cb1d4 100644 --- a/gold/icf.cc +++ b/gold/icf.cc @@ -366,7 +366,8 @@ get_section_contents(bool first_iteration, uint64_t secn_flags = (it_v->first)->section_flags(it_v->second); // This reloc points to a merge section. Hash the // contents of this section. - if ((secn_flags & elfcpp::SHF_MERGE) != 0) + if ((secn_flags & elfcpp::SHF_MERGE) != 0 + && parameters->target().can_icf_inline_merge_sections ()) { uint64_t entsize = (it_v->first)->section_entsize(it_v->second); diff --git a/gold/target.h b/gold/target.h index 33f7ee8..5cdd032 100644 --- a/gold/target.h +++ b/gold/target.h @@ -72,6 +72,13 @@ class Target can_check_for_function_pointers() const { return false; } + // This function is used in ICF (icf.cc). This is set to true by + // the target if a relocation to a merged section can be processed + // to retrieve the contents of the merged section. + virtual bool + can_icf_inline_merge_sections () const + { return false; } + // Whether a section called SECTION_NAME may have function pointers to // sections not eligible for safe ICF folding. virtual bool diff --git a/gold/x86_64.cc b/gold/x86_64.cc index 1396fb3..4853603 100644 --- a/gold/x86_64.cc +++ b/gold/x86_64.cc @@ -189,6 +189,10 @@ class Target_x86_64 : public Target_freebsd<64, false> can_check_for_function_pointers() const { return !parameters->options().pie(); } + virtual bool + can_icf_inline_merge_sections () const + { return true; } + // Hook for a new output section. void do_new_output_section(Output_section*) const; |