https://github.com/shawbyoung updated
https://github.com/llvm/llvm-project/pull/95821
>From 92212c96ea169d26ac10bf8d750539bc5dd72c49 Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Mon, 17 Jun 2024 15:39:02 -0700
Subject: [PATCH 01/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index f0fcb1c130002..2bca83c9d11ec 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -421,6 +421,8 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
StrictBinaryFunctionHashes.reserve(BC.getBinaryFunctions().size());
for (auto& [_, BF] : BC.getBinaryFunctions()) {
+ if (!ProfiledFunctions.count(&BF))
+ continue;
StrictBinaryFunctionHashes[BF.getHash()] = &BF;
}
>From 2497922ccc46e3189870563b1fe819b67172778d Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Mon, 17 Jun 2024 15:39:39 -0700
Subject: [PATCH 02/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index 2bca83c9d11ec..56474a67307ed 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -417,10 +417,10 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
// Uses the strict hash of profiled and binary functions to match functions
// that are not matched by name or common name.
- std::unordered_map<size_t, BinaryFunction*> StrictBinaryFunctionHashes;
+ std::unordered_map<size_t, BinaryFunction *> StrictBinaryFunctionHashes;
StrictBinaryFunctionHashes.reserve(BC.getBinaryFunctions().size());
- for (auto& [_, BF] : BC.getBinaryFunctions()) {
+ for (auto &[_, BF] : BC.getBinaryFunctions()) {
if (!ProfiledFunctions.count(&BF))
continue;
StrictBinaryFunctionHashes[BF.getHash()] = &BF;
@@ -428,7 +428,8 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
for (auto YamlBF : YamlBP.Functions) {
auto It = StrictBinaryFunctionHashes.find(YamlBF.Hash);
- if (It != StrictBinaryFunctionHashes.end() &&
!ProfiledFunctions.count(It->second)) {
+ if (It != StrictBinaryFunctionHashes.end() &&
+ !ProfiledFunctions.count(It->second)) {
auto *BF = It->second;
matchProfileToFunction(YamlBF, *BF);
}
>From 8e7b2229a69c3795e723404c56e0d4298eef412a Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Mon, 17 Jun 2024 15:55:58 -0700
Subject: [PATCH 03/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 2 +-
bolt/test/X86/profile-passthrough-block.test | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index 56474a67307ed..779d60bce3b66 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -421,7 +421,7 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
StrictBinaryFunctionHashes.reserve(BC.getBinaryFunctions().size());
for (auto &[_, BF] : BC.getBinaryFunctions()) {
- if (!ProfiledFunctions.count(&BF))
+ if (ProfiledFunctions.count(&BF))
continue;
StrictBinaryFunctionHashes[BF.getHash()] = &BF;
}
diff --git a/bolt/test/X86/profile-passthrough-block.test
b/bolt/test/X86/profile-passthrough-block.test
index 1b875885260dc..ed2a8117ddfc4 100644
--- a/bolt/test/X86/profile-passthrough-block.test
+++ b/bolt/test/X86/profile-passthrough-block.test
@@ -57,7 +57,7 @@ header:
functions:
- name: main
fid: 0
- hash: 0x0000000000000000
+ hash: 0x0000000000000001
exec: 1
nblocks: 6
blocks:
>From ef5f0dac9185dbb7a62345938d4f309c3379a85d Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Mon, 17 Jun 2024 15:58:22 -0700
Subject: [PATCH 04/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index 779d60bce3b66..e3d30bfdb74e4 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -427,6 +427,8 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
}
for (auto YamlBF : YamlBP.Functions) {
+ if (YamlBF.Used)
+ continue;
auto It = StrictBinaryFunctionHashes.find(YamlBF.Hash);
if (It != StrictBinaryFunctionHashes.end() &&
!ProfiledFunctions.count(It->second)) {
>From 41ce2897a445e47dfe685da66b4af080824e78ed Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Mon, 17 Jun 2024 16:00:27 -0700
Subject: [PATCH 05/11] spr amend
Created using spr 1.3.4
---
bolt/test/X86/profile-passthrough-block.test | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/bolt/test/X86/profile-passthrough-block.test
b/bolt/test/X86/profile-passthrough-block.test
index ed2a8117ddfc4..1b875885260dc 100644
--- a/bolt/test/X86/profile-passthrough-block.test
+++ b/bolt/test/X86/profile-passthrough-block.test
@@ -57,7 +57,7 @@ header:
functions:
- name: main
fid: 0
- hash: 0x0000000000000001
+ hash: 0x0000000000000000
exec: 1
nblocks: 6
blocks:
>From 99cf8918e945356d12b5d29fe8174c610f305559 Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Tue, 18 Jun 2024 14:19:45 -0700
Subject: [PATCH 06/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 51 +++++++-------
.../X86/hashing-based-function-matching.test | 67 +++++++++++++++++++
2 files changed, 93 insertions(+), 25 deletions(-)
create mode 100644 bolt/test/X86/hashing-based-function-matching.test
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index e3d30bfdb74e4..78d46eea5c728 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -363,9 +363,7 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
return Profile.Hash == static_cast<uint64_t>(BF.getHash());
};
- // We have to do 2 passes since LTO introduces an ambiguity in function
- // names. The first pass assigns profiles that match 100% by name and
- // by hash. The second pass allows name ambiguity for LTO private functions.
+ // This first pass assigns profiles that match 100% by name and by hash.
for (auto [YamlBF, BF] : llvm::zip_equal(YamlBP.Functions, ProfileBFs)) {
if (!BF)
continue;
@@ -383,6 +381,30 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
matchProfileToFunction(YamlBF, Function);
}
+ // Uses the strict hash of profiled and binary functions to match functions
+ // that are not matched by name or common name.
+ std::unordered_map<size_t, BinaryFunction *> StrictBinaryFunctionHashes;
+ StrictBinaryFunctionHashes.reserve(BC.getBinaryFunctions().size());
+
+ for (auto &[_, BF] : BC.getBinaryFunctions()) {
+ if (ProfiledFunctions.count(&BF))
+ continue;
+ BF.computeHash(YamlBP.Header.IsDFSOrder, YamlBP.Header.HashFunction);
+ StrictBinaryFunctionHashes[BF.getHash()] = &BF;
+ }
+
+ for (auto YamlBF : YamlBP.Functions) {
+ if (YamlBF.Used)
+ continue;
+ auto It = StrictBinaryFunctionHashes.find(YamlBF.Hash);
+ if (It != StrictBinaryFunctionHashes.end() &&
+ !ProfiledFunctions.count(It->second)) {
+ auto *BF = It->second;
+ matchProfileToFunction(YamlBF, *BF);
+ }
+ }
+
+ // This second pass allows name ambiguity for LTO private functions.
for (const auto &[CommonName, LTOProfiles] : LTOCommonNameMap) {
if (!LTOCommonNameFunctionMap.contains(CommonName))
continue;
@@ -415,33 +437,12 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
if (!YamlBF.Used && BF && !ProfiledFunctions.count(BF))
matchProfileToFunction(YamlBF, *BF);
- // Uses the strict hash of profiled and binary functions to match functions
- // that are not matched by name or common name.
- std::unordered_map<size_t, BinaryFunction *> StrictBinaryFunctionHashes;
- StrictBinaryFunctionHashes.reserve(BC.getBinaryFunctions().size());
-
- for (auto &[_, BF] : BC.getBinaryFunctions()) {
- if (ProfiledFunctions.count(&BF))
- continue;
- StrictBinaryFunctionHashes[BF.getHash()] = &BF;
- }
-
- for (auto YamlBF : YamlBP.Functions) {
- if (YamlBF.Used)
- continue;
- auto It = StrictBinaryFunctionHashes.find(YamlBF.Hash);
- if (It != StrictBinaryFunctionHashes.end() &&
- !ProfiledFunctions.count(It->second)) {
- auto *BF = It->second;
- matchProfileToFunction(YamlBF, *BF);
- }
- }
-
for (yaml::bolt::BinaryFunctionProfile &YamlBF : YamlBP.Functions)
if (!YamlBF.Used && opts::Verbosity >= 1)
errs() << "BOLT-WARNING: profile ignored for function " << YamlBF.Name
<< '\n';
+
// Set for parseFunctionProfile().
NormalizeByInsnCount = usesEvent("cycles") || usesEvent("instructions");
NormalizeByCalls = usesEvent("branches");
diff --git a/bolt/test/X86/hashing-based-function-matching.test
b/bolt/test/X86/hashing-based-function-matching.test
new file mode 100644
index 0000000000000..3c2cd834f90bf
--- /dev/null
+++ b/bolt/test/X86/hashing-based-function-matching.test
@@ -0,0 +1,67 @@
+## Test YAMLProfileReader support for pass-through blocks in non-matching
edges:
+## match the profile edge A -> C to the CFG with blocks A -> B -> C.
+
+# REQUIRES: system-linux
+# RUN: split-file %s %t
+# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %t/main.s -o %t.o
+# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q -nostdlib
+# RUN: llvm-bolt %t.exe -o %t.out --data %t/yaml -v=1 \
+# RUN: --print-cfg 2>&1 | FileCheck %s
+
+# CHECK: Binary Function "main" after building cfg
+# CHECK: Profile Acc : 100.0%
+# CHECK-NOT: BOLT-WARNING: no successor for block .LFT0 that matches index 3
or block .Ltmp0
+
+#--- main.s
+.globl main
+.type main, @function
+main:
+ .cfi_startproc
+.LBB00:
+ pushq %rbp
+ movq %rsp, %rbp
+ subq $16, %rsp
+ testq %rax, %rax
+ js .LBB03
+.LBB01:
+ jne .LBB04
+.LBB02:
+ nop
+.LBB03:
+ xorl %eax, %eax
+ addq $16, %rsp
+ popq %rbp
+ retq
+.LBB04:
+ xorl %eax, %eax
+ addq $16, %rsp
+ popq %rbp
+ retq
+## For relocations against .text
+.LBB05:
+ call exit
+ .cfi_endproc
+ .size main, .-main
+
+#--- yaml
+---
+header:
+ profile-version: 1
+ binary-name: 'profile-passthrough-block.s.tmp.exe'
+ binary-build-id: '<unknown>'
+ profile-flags: [ lbr ]
+ profile-origin: branch profile reader
+ profile-events: ''
+ dfs-order: false
+ hash-func: xxh3
+functions:
+ - name: main2
+ fid: 0
+ hash: 0x72f82deaa6fe65fb
+ exec: 1
+ nblocks: 6
+ blocks:
+ - bid: 1
+ insns: 1
+ succ: [ { bid: 3, cnt: 1} ]
+...
>From e11820ff0121d9481a24b825f1910935e6d5789d Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Thu, 20 Jun 2024 08:28:02 -0700
Subject: [PATCH 07/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 42 +++++++++----------
.../X86/hashing-based-function-matching.test | 4 +-
2 files changed, 22 insertions(+), 24 deletions(-)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index 78d46eea5c728..7209168c0f81d 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -363,6 +363,11 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
return Profile.Hash == static_cast<uint64_t>(BF.getHash());
};
+ // Computes hash for binary functions.
+ if (!opts::IgnoreHash)
+ for (auto &[_, BF] : BC.getBinaryFunctions())
+ BF.computeHash(YamlBP.Header.IsDFSOrder, YamlBP.Header.HashFunction);
+
// This first pass assigns profiles that match 100% by name and by hash.
for (auto [YamlBF, BF] : llvm::zip_equal(YamlBP.Functions, ProfileBFs)) {
if (!BF)
@@ -372,35 +377,29 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
// the profile.
Function.setExecutionCount(BinaryFunction::COUNT_NO_PROFILE);
- // Recompute hash once per function.
- if (!opts::IgnoreHash)
- Function.computeHash(YamlBP.Header.IsDFSOrder,
- YamlBP.Header.HashFunction);
-
if (profileMatches(YamlBF, Function))
matchProfileToFunction(YamlBF, Function);
}
// Uses the strict hash of profiled and binary functions to match functions
// that are not matched by name or common name.
- std::unordered_map<size_t, BinaryFunction *> StrictBinaryFunctionHashes;
- StrictBinaryFunctionHashes.reserve(BC.getBinaryFunctions().size());
+ if (!opts::IgnoreHash) {
+ std::unordered_map<size_t, BinaryFunction *> StrictHashToBF;
+ StrictHashToBF.reserve(BC.getBinaryFunctions().size());
- for (auto &[_, BF] : BC.getBinaryFunctions()) {
- if (ProfiledFunctions.count(&BF))
- continue;
- BF.computeHash(YamlBP.Header.IsDFSOrder, YamlBP.Header.HashFunction);
- StrictBinaryFunctionHashes[BF.getHash()] = &BF;
- }
+ for (auto &[_, BF] : BC.getBinaryFunctions()) {
+ StrictHashToBF[BF.getHash()] = &BF;
+ }
- for (auto YamlBF : YamlBP.Functions) {
- if (YamlBF.Used)
- continue;
- auto It = StrictBinaryFunctionHashes.find(YamlBF.Hash);
- if (It != StrictBinaryFunctionHashes.end() &&
- !ProfiledFunctions.count(It->second)) {
- auto *BF = It->second;
- matchProfileToFunction(YamlBF, *BF);
+ for (auto YamlBF : YamlBP.Functions) {
+ if (YamlBF.Used)
+ continue;
+ auto It = StrictHashToBF.find(YamlBF.Hash);
+ if (It != StrictHashToBF.end() &&
+ !ProfiledFunctions.count(It->second)) {
+ auto *BF = It->second;
+ matchProfileToFunction(YamlBF, *BF);
+ }
}
}
@@ -442,7 +441,6 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
errs() << "BOLT-WARNING: profile ignored for function " << YamlBF.Name
<< '\n';
-
// Set for parseFunctionProfile().
NormalizeByInsnCount = usesEvent("cycles") || usesEvent("instructions");
NormalizeByCalls = usesEvent("branches");
diff --git a/bolt/test/X86/hashing-based-function-matching.test
b/bolt/test/X86/hashing-based-function-matching.test
index 3c2cd834f90bf..833450047284a 100644
--- a/bolt/test/X86/hashing-based-function-matching.test
+++ b/bolt/test/X86/hashing-based-function-matching.test
@@ -5,7 +5,7 @@
# RUN: split-file %s %t
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %t/main.s -o %t.o
# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q -nostdlib
-# RUN: llvm-bolt %t.exe -o %t.out --data %t/yaml -v=1 \
+# RUN: llvm-bolt %t.exe -o %t.out --data %t/yaml -v=2 \
# RUN: --print-cfg 2>&1 | FileCheck %s
# CHECK: Binary Function "main" after building cfg
@@ -57,7 +57,7 @@ header:
functions:
- name: main2
fid: 0
- hash: 0x72f82deaa6fe65fb
+ hash: 0x72F82DEAA6FE65FB
exec: 1
nblocks: 6
blocks:
>From 83858e2fcc565673bf10b030199d30153ba015b3 Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Thu, 20 Jun 2024 10:45:17 -0700
Subject: [PATCH 08/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 3 +++
1 file changed, 3 insertions(+)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index 7209168c0f81d..124af2c25b9e4 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -329,6 +329,9 @@ Error YAMLProfileReader::preprocessProfile(BinaryContext
&BC) {
}
bool YAMLProfileReader::mayHaveProfileData(const BinaryFunction &BF) {
+ if (!opts::IgnoreHash) {
+ return true;
+ }
for (StringRef Name : BF.getNames())
if (ProfileFunctionNames.contains(Name))
return true;
>From 73871266cf7709ae335be22428290cdc1efe410b Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Thu, 20 Jun 2024 14:35:45 -0700
Subject: [PATCH 09/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 41 ++++++++++++++++---
bolt/lib/Rewrite/RewriteInstance.cpp | 6 ++-
bolt/lib/Utils/CommandLineOpts.cpp | 5 +++
.../X86/hashing-based-function-matching.test | 6 +--
4 files changed, 47 insertions(+), 11 deletions(-)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index 124af2c25b9e4..603620aa483d7 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -22,6 +22,7 @@ namespace opts {
extern cl::opt<unsigned> Verbosity;
extern cl::OptionCategory BoltOptCategory;
extern cl::opt<bool> InferStaleProfile;
+extern cl::opt<bool> MatchingFunctionsWithHash;
static llvm::cl::opt<bool>
IgnoreHash("profile-ignore-hash",
@@ -329,9 +330,6 @@ Error YAMLProfileReader::preprocessProfile(BinaryContext
&BC) {
}
bool YAMLProfileReader::mayHaveProfileData(const BinaryFunction &BF) {
- if (!opts::IgnoreHash) {
- return true;
- }
for (StringRef Name : BF.getNames())
if (ProfileFunctionNames.contains(Name))
return true;
@@ -366,10 +364,26 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
return Profile.Hash == static_cast<uint64_t>(BF.getHash());
};
+ uint64_t MatchedWithExactName = 0;
+ uint64_t MatchedWithHash = 0;
+ uint64_t MatchedWithLTOCommonName = 0;
+
// Computes hash for binary functions.
- if (!opts::IgnoreHash)
+ if (opts::MatchingFunctionsWithHash) {
for (auto &[_, BF] : BC.getBinaryFunctions())
BF.computeHash(YamlBP.Header.IsDFSOrder, YamlBP.Header.HashFunction);
+ }
+ else {
+ for (auto [YamlBF, BF] : llvm::zip_equal(YamlBP.Functions, ProfileBFs)) {
+ if (!BF)
+ continue;
+ BinaryFunction &Function = *BF;
+
+ if (!opts::IgnoreHash)
+ Function.computeHash(YamlBP.Header.IsDFSOrder,
+ YamlBP.Header.HashFunction);
+ }
+ }
// This first pass assigns profiles that match 100% by name and by hash.
for (auto [YamlBF, BF] : llvm::zip_equal(YamlBP.Functions, ProfileBFs)) {
@@ -380,8 +394,10 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
// the profile.
Function.setExecutionCount(BinaryFunction::COUNT_NO_PROFILE);
- if (profileMatches(YamlBF, Function))
+ if (profileMatches(YamlBF, Function)) {
matchProfileToFunction(YamlBF, Function);
+ ++MatchedWithExactName;
+ }
}
// Uses the strict hash of profiled and binary functions to match functions
@@ -402,6 +418,7 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
!ProfiledFunctions.count(It->second)) {
auto *BF = It->second;
matchProfileToFunction(YamlBF, *BF);
+ ++MatchedWithHash;
}
}
}
@@ -420,6 +437,7 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
for (BinaryFunction *BF : Functions) {
if (!ProfiledFunctions.count(BF) && profileMatches(*YamlBF, *BF)) {
matchProfileToFunction(*YamlBF, *BF);
+ ++MatchedWithLTOCommonName;
return true;
}
}
@@ -431,8 +449,10 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
// partially.
if (!ProfileMatched && LTOProfiles.size() == 1 && Functions.size() == 1 &&
!LTOProfiles.front()->Used &&
- !ProfiledFunctions.count(*Functions.begin()))
+ !ProfiledFunctions.count(*Functions.begin())) {
matchProfileToFunction(*LTOProfiles.front(), **Functions.begin());
+ ++MatchedWithLTOCommonName;
+ }
}
for (auto [YamlBF, BF] : llvm::zip_equal(YamlBP.Functions, ProfileBFs))
@@ -444,6 +464,15 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
errs() << "BOLT-WARNING: profile ignored for function " << YamlBF.Name
<< '\n';
+ if (opts::Verbosity >= 2) {
+ outs() << "BOLT-INFO: matched " << MatchedWithExactName
+ << " functions with identical names\n";
+ outs() << "BOLT-INFO: matched " << MatchedWithHash
+ << " functions with hash\n";
+ outs() << "BOLT-INFO: matched " << MatchedWithLTOCommonName
+ << " functions with matching LTO common names\n";
+ }
+
// Set for parseFunctionProfile().
NormalizeByInsnCount = usesEvent("cycles") || usesEvent("instructions");
NormalizeByCalls = usesEvent("branches");
diff --git a/bolt/lib/Rewrite/RewriteInstance.cpp
b/bolt/lib/Rewrite/RewriteInstance.cpp
index 1a3a8af21d81b..c157e45e1d586 100644
--- a/bolt/lib/Rewrite/RewriteInstance.cpp
+++ b/bolt/lib/Rewrite/RewriteInstance.cpp
@@ -82,6 +82,7 @@ extern cl::opt<bool> Hugify;
extern cl::opt<bool> Instrument;
extern cl::opt<JumpTableSupportLevel> JumpTables;
extern cl::opt<bool> KeepNops;
+extern cl::opt<bool> MatchingFunctionsWithHash;
extern cl::list<std::string> ReorderData;
extern cl::opt<bolt::ReorderFunctions::ReorderType> ReorderFunctions;
extern cl::opt<bool> TerminalTrap;
@@ -2982,6 +2983,9 @@ void RewriteInstance::selectFunctionsToProcess() {
if (mustSkip(Function))
return false;
+ if (opts::MatchingFunctionsWithHash)
+ return true;
+
// If the list is not empty, only process functions from the list.
if (!opts::ForceFunctionNames.empty() || !ForceFunctionsNR.empty()) {
// Regex check (-funcs and -funcs-file options).
@@ -2998,6 +3002,7 @@ void RewriteInstance::selectFunctionsToProcess() {
}
if (opts::Lite) {
+
// Forcibly include functions specified in the -function-order file.
if (opts::ReorderFunctions == ReorderFunctions::RT_USER) {
for (const StringRef Name : Function.getNames())
@@ -3008,7 +3013,6 @@ void RewriteInstance::selectFunctionsToProcess() {
if (ReorderFunctionsLTOCommonSet.contains(*LTOCommonName))
return true;
}
-
if (ProfileReader && !ProfileReader->mayHaveProfileData(Function))
return false;
diff --git a/bolt/lib/Utils/CommandLineOpts.cpp
b/bolt/lib/Utils/CommandLineOpts.cpp
index 41c89bc8aeba4..58d44a98b6218 100644
--- a/bolt/lib/Utils/CommandLineOpts.cpp
+++ b/bolt/lib/Utils/CommandLineOpts.cpp
@@ -128,6 +128,11 @@ cl::opt<bool>
cl::desc("instrument code to generate accurate profile data"),
cl::cat(BoltOptCategory));
+cl::opt<bool>
MatchingFunctionsWithHash("stale-matching-matching-functions-with-hash",
+ cl::desc("Matching functions using hash"),
+ cl::Hidden,
+ cl::cat(BoltCategory));
+
cl::opt<std::string>
OutputFilename("o",
cl::desc("<output file>"),
diff --git a/bolt/test/X86/hashing-based-function-matching.test
b/bolt/test/X86/hashing-based-function-matching.test
index 833450047284a..83819f4c539d3 100644
--- a/bolt/test/X86/hashing-based-function-matching.test
+++ b/bolt/test/X86/hashing-based-function-matching.test
@@ -6,11 +6,9 @@
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %t/main.s -o %t.o
# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q -nostdlib
# RUN: llvm-bolt %t.exe -o %t.out --data %t/yaml -v=2 \
-# RUN: --print-cfg 2>&1 | FileCheck %s
+# RUN: --print-cfg --stale-matching-matching-functions-with-hash 2>&1
--profile-ignore-hash=0 | FileCheck %s
-# CHECK: Binary Function "main" after building cfg
-# CHECK: Profile Acc : 100.0%
-# CHECK-NOT: BOLT-WARNING: no successor for block .LFT0 that matches index 3
or block .Ltmp0
+# CHECK: BOLT-INFO: matched 1 functions with hash
#--- main.s
.globl main
>From baec71c1a91b3ac7be09ee9774c8542430320ad0 Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Thu, 20 Jun 2024 14:37:10 -0700
Subject: [PATCH 10/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index 603620aa483d7..dcc5d23745cb2 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -406,11 +406,10 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
std::unordered_map<size_t, BinaryFunction *> StrictHashToBF;
StrictHashToBF.reserve(BC.getBinaryFunctions().size());
- for (auto &[_, BF] : BC.getBinaryFunctions()) {
+ for (auto &[_, BF] : BC.getBinaryFunctions())
StrictHashToBF[BF.getHash()] = &BF;
- }
- for (auto YamlBF : YamlBP.Functions) {
+ for (yaml::bolt::BinaryFunctionProfile& YamlBF : YamlBP.Functions) {
if (YamlBF.Used)
continue;
auto It = StrictHashToBF.find(YamlBF.Hash);
>From ff68ace13b1ece9c93322a3f1833f574b493c13b Mon Sep 17 00:00:00 2001
From: shawbyoung <shawbyo...@gmail.com>
Date: Thu, 20 Jun 2024 14:47:04 -0700
Subject: [PATCH 11/11] spr amend
Created using spr 1.3.4
---
bolt/lib/Profile/YAMLProfileReader.cpp | 2 +-
bolt/lib/Rewrite/RewriteInstance.cpp | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp
b/bolt/lib/Profile/YAMLProfileReader.cpp
index dcc5d23745cb2..d04d54e1a9170 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -402,7 +402,7 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
// Uses the strict hash of profiled and binary functions to match functions
// that are not matched by name or common name.
- if (!opts::IgnoreHash) {
+ if (opts::MatchingFunctionsWithHash) {
std::unordered_map<size_t, BinaryFunction *> StrictHashToBF;
StrictHashToBF.reserve(BC.getBinaryFunctions().size());
diff --git a/bolt/lib/Rewrite/RewriteInstance.cpp
b/bolt/lib/Rewrite/RewriteInstance.cpp
index c157e45e1d586..7afc7c920318c 100644
--- a/bolt/lib/Rewrite/RewriteInstance.cpp
+++ b/bolt/lib/Rewrite/RewriteInstance.cpp
@@ -3002,7 +3002,6 @@ void RewriteInstance::selectFunctionsToProcess() {
}
if (opts::Lite) {
-
// Forcibly include functions specified in the -function-order file.
if (opts::ReorderFunctions == ReorderFunctions::RT_USER) {
for (const StringRef Name : Function.getNames())
@@ -3013,6 +3012,7 @@ void RewriteInstance::selectFunctionsToProcess() {
if (ReorderFunctionsLTOCommonSet.contains(*LTOCommonName))
return true;
}
+
if (ProfileReader && !ProfileReader->mayHaveProfileData(Function))
return false;
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