Fangrui Song e56626e438 [PGO] Move __profc_ and __profvp_ from their own comdat groups to __profd_'s comdat group ... D68041 placed `__profc_`, `__profd_` and (if exists) `__profvp_` in different comdat groups. There are some issues: * Cost: one or two additional section headers (`.group` section(s)): 64 or 128 bytes on ELF64. * `__profc_`, `__profd_` and (if exists) `__profvp_` should be retained or discarded. Placing them into separate comdat groups is conceptually inferior. * If the prevailing group does not include `__profvp_` (value profiling not used) but a non-prevailing group from another translation unit has `__profvp_` (the function is inlined into another and triggers value profiling), there will be a stray `__profvp_` if --gc-sections is not enabled. This has been fixed by 3d6f53018f. Actually, we can reuse an existing symbol (we choose `__profd_`) as the group signature to avoid a string in the string table (the sole reason that D68041 could improve code size is that `__profv_` was an otherwise unused symbol which wasted string table space). This saves one or two section headers. For a -DCMAKE_BUILD_TYPE=Release -DLLVM_BUILD_INSTRUMENTED=IR build, `ninja clang lld`, the patch has saved 10.5MiB (2.2%) for the total .o size. Reviewed By: davidxl Differential Revision: https://reviews.llvm.org/D84723		2020-08-03 20:35:50 -07:00
..
Inputs	[PGO] Include the mem ops into the function hash.	2020-07-30 09:26:20 -07:00
X86	…
PR28219.ll	…
PR41279.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
PR41279_2.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
branch1.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
branch2.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
callbr.ll	[CallSite Removal] a CallBase is never an IndirectCall for isInlineAsm	2020-04-06 16:14:46 -07:00
chr.ll	[SimplifyCFG][LoopRotate] SimplifyCFG: disable common instruction hoisting by default, enable late in pipeline	2020-07-29 20:05:30 +03:00
comdat_internal.ll	[PGO] Move __profc_ and __profvp_ from their own comdat groups to __profd_'s comdat group	2020-08-03 20:35:50 -07:00
comdat_rename.ll	…
counter_promo.ll	[PGO][InstrProf] Do not promote count if the exit blocks contains ret instruction	2020-07-24 17:38:31 -07:00
counter_promo_exit_catchswitch.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
counter_promo_exit_merge.ll	…
counter_promo_mexits.ll	Revert "[InstrProfiling] Use !associated metadata for counters, data and values"	2020-06-10 02:32:50 -07:00
counter_promo_nest.ll	…
criticaledge.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
cspgo_profile_summary.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
diag_FE_profile.ll	…
diag_mismatch.ll	…
diag_no_funcprofdata.ll	…
diag_no_profile.ll	…
diag_no_value_sites.ll	…
do-not-instrument.ll	…
fix_entry_count.ll	[PGO] Fix incorrect function entry count	2020-07-24 17:39:55 -07:00
func_entry.ll	…
icp_covariant_call_return.ll	…
icp_covariant_invoke_return.ll	…
icp_invoke.ll	…
icp_invoke_nouse.ll	…
icp_mismatch_msg.ll	…
icp_sample.ll	…
icp_vararg.ll	…
icp_vararg_sret.ll	[PGO] CallPromotion: Don't try to pass sret args to varargs functions	2020-06-08 21:10:27 +02:00
indirect_call_annotation.ll	…
indirect_call_profile.ll	…
indirect_call_profile_funclet.ll	…
indirect_call_promotion.ll	…
indirect_call_promotion_byval.ll	…
indirect_call_promotion_musttail.ll	[ICP] Handling must tail calls in indirect call promotion	2020-05-03 10:42:22 -07:00
indirect_call_promotion_vla.ll	…
indirectbr.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
infinite_loop.ll	…
infinite_loop_gen.ll	…
instr_entry_bb.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
irreducible.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
landingpad.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
large_count_remarks.ll	…
loop1.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
loop2.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
memcpy.ll	[PGO] Extend the value profile buckets for mem op sizes.	2020-08-03 11:04:32 -07:00
memop_clone.ll	…
memop_hash.ll	[PGO][test] Add test to check memops changes function hash	2020-07-31 09:43:29 -07:00
memop_profile_funclet.ll	[PGO] Extend the value profile buckets for mem op sizes.	2020-08-03 11:04:32 -07:00
memop_size_annotation.ll	[PGO] Guard the memcmp/bcmp size value profiling instrumentation behind flag.	2020-05-28 10:07:04 -07:00
memop_size_from_strlen.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
memop_size_opt.ll	[PGO] Add memcmp/bcmp size value profiling.	2020-05-26 10:28:04 -07:00
memop_size_opt_zero.ll	…
misexpect-branch-correct.ll	…
misexpect-branch-stripped.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
misexpect-branch-unpredictable.ll	…
misexpect-branch.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
misexpect-switch-default.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
misexpect-switch.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
multiple_hash_profile.ll	[PGO] Include the mem ops into the function hash.	2020-07-30 09:26:20 -07:00
noreturncall.ll	…
not_promote_ret_exit.ll	[PGO][InstrProf] Do not promote count if the exit blocks contains ret instruction	2020-07-24 17:38:31 -07:00
preinline.ll	…
remap.ll	…
select1.ll	…
select2.ll	…
select_hash_conflict.ll	…
single_bb.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
split-indirectbr-critical-edges.ll	…
statics_counter_naming.ll	…
suppl-profile.ll	Supplement instr profile with sample profile.	2020-07-27 20:17:40 -07:00
switch.ll	[PGO] Remove insignificant function hash values from some tests.	2020-07-29 10:23:42 -07:00
thinlto_cspgo_gen.ll	…
thinlto_cspgo_use.ll	[PGO] Supporting code for always instrumenting entry block	2020-07-22 15:01:53 -07:00
thinlto_indirect_call_promotion.ll	…
thinlto_samplepgo_icp.ll	…
thinlto_samplepgo_icp2.ll	…
thinlto_samplepgo_icp3.ll	…
thinlto_samplepgo_icp_droppeddead.ll	…
unreachable_bb.ll	[ProfileSummary] Add the PartialProfileRatio field in ProfileSummary metadata.	2020-05-21 09:12:23 -07:00