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author	Rong Xu <xur@google.com>
	Wed, 22 Jul 2020 21:58:42 +0000 (14:58 -0700)
committer	Rong Xu <xur@google.com>
	Wed, 22 Jul 2020 22:01:53 +0000 (15:01 -0700)
commit	50da55a58534e9207d8d5e31c8b4b5cf0c624175
tree	7c103621e146290d18d85160106b26f81606274c	tree \| snapshot
parent	e0ee2288424952e0445f096ae7800472eac11249	commit \| diff

[PGO] Supporting code for always instrumenting entry block

This patch includes the supporting code that enables always
instrumenting the function entry block by default.

This patch will NOT the default behavior.

It adds a variant bit in the profile version, adds new directives in
text profile format, and changes llvm-profdata tool accordingly.

This patch is a split of D83024 (https://reviews.llvm.org/D83024)
Many test changes from D83024 are also included.

Differential Revision: https://reviews.llvm.org/D84261

47 files changed:

clang/test/CodeGenCXX/Inputs/profile-remap_entry.proftext	[new file with mode: 0644]	blob
clang/test/CodeGenCXX/profile-remap.cpp		diff \| blob \| history
clang/test/Profile/Inputs/gcc-flag-compatibility_IR_entry.proftext	[new file with mode: 0644]	blob
clang/test/Profile/gcc-flag-compatibility.c		diff \| blob \| history
llvm/include/llvm/ProfileData/InstrProf.h		diff \| blob \| history
llvm/include/llvm/ProfileData/InstrProfData.inc		diff \| blob \| history
llvm/include/llvm/ProfileData/InstrProfReader.h		diff \| blob \| history
llvm/include/llvm/ProfileData/InstrProfWriter.h		diff \| blob \| history
llvm/lib/ProfileData/InstrProf.cpp		diff \| blob \| history
llvm/lib/ProfileData/InstrProfReader.cpp		diff \| blob \| history
llvm/lib/ProfileData/InstrProfWriter.cpp		diff \| blob \| history
llvm/lib/Transforms/Instrumentation/CFGMST.h		diff \| blob \| history
llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp		diff \| blob \| history
llvm/test/Transforms/PGOProfile/Inputs/branch2_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/criticaledge_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/func_entry.proftext		diff \| blob \| history
llvm/test/Transforms/PGOProfile/Inputs/indirectbr_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/irreducible_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/landingpad_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/loop1_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/loop2_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/misexpect-branch_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/misexpect-switch-correct_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/misexpect-switch_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/Inputs/select1.proftext		diff \| blob \| history
llvm/test/Transforms/PGOProfile/Inputs/select2.proftext		diff \| blob \| history
llvm/test/Transforms/PGOProfile/Inputs/switch_entry.proftext	[new file with mode: 0644]	blob
llvm/test/Transforms/PGOProfile/branch2.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/counter_promo_exit_catchswitch.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/criticaledge.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/cspgo_profile_summary.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/indirectbr.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/irreducible.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/landingpad.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/loop1.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/loop2.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/misexpect-branch-stripped.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/misexpect-branch.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/misexpect-switch-default.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/misexpect-switch.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/switch.ll		diff \| blob \| history
llvm/test/Transforms/PGOProfile/thinlto_cspgo_use.ll		diff \| blob \| history
llvm/test/tools/llvm-profdata/Inputs/header-directives-1.proftext	[new file with mode: 0644]	blob
llvm/test/tools/llvm-profdata/Inputs/header-directives-2.proftext	[new file with mode: 0644]	blob
llvm/test/tools/llvm-profdata/Inputs/header-directives-3.proftext	[new file with mode: 0644]	blob
llvm/test/tools/llvm-profdata/header-directives.test	[new file with mode: 0644]	blob
llvm/tools/llvm-profdata/llvm-profdata.cpp		diff \| blob \| history

Domain: System / Toolchain;

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