Skip to content

[SHT_LLVM_BB_ADDR_MAP][AsmPrinter] Add none and all options to PGO Map #111221

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
boomanaiden154 merged 1 commit into from
Oct 25, 2024
Merged

[SHT_LLVM_BB_ADDR_MAP][AsmPrinter] Add none and all options to PGO Map #111221

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
31 changes: 22 additions & 9 deletions llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -141,18 +141,22 @@ using namespace llvm;
// `object::PGOAnalysisMap::Features::decode(PgoAnalysisMapFeatures.getBits())`
// succeeds.
enum class PGOMapFeaturesEnum {
None,
FuncEntryCount,
BBFreq,
BrProb,
All,
};
static cl::bits<PGOMapFeaturesEnum> PgoAnalysisMapFeatures(
"pgo-analysis-map", cl::Hidden, cl::CommaSeparated,
cl::values(clEnumValN(PGOMapFeaturesEnum::FuncEntryCount,
"func-entry-count", "Function Entry Count"),
clEnumValN(PGOMapFeaturesEnum::BBFreq, "bb-freq",
"Basic Block Frequency"),
clEnumValN(PGOMapFeaturesEnum::BrProb, "br-prob",
"Branch Probability")),
cl::values(
clEnumValN(PGOMapFeaturesEnum::None, "none", "Disable all options"),
clEnumValN(PGOMapFeaturesEnum::FuncEntryCount, "func-entry-count",
"Function Entry Count"),
clEnumValN(PGOMapFeaturesEnum::BBFreq, "bb-freq",
"Basic Block Frequency"),
clEnumValN(PGOMapFeaturesEnum::BrProb, "br-prob", "Branch Probability"),
clEnumValN(PGOMapFeaturesEnum::All, "all", "Enable all options")),
cl::desc(
"Enable extended information within the SHT_LLVM_BB_ADDR_MAP that is "
"extracted from PGO related analysis."));
Expand Down Expand Up @@ -1367,9 +1371,18 @@ static uint32_t getBBAddrMapMetadata(const MachineBasicBlock &MBB) {

static llvm::object::BBAddrMap::Features
getBBAddrMapFeature(const MachineFunction &MF, int NumMBBSectionRanges) {
return {PgoAnalysisMapFeatures.isSet(PGOMapFeaturesEnum::FuncEntryCount),
PgoAnalysisMapFeatures.isSet(PGOMapFeaturesEnum::BBFreq),
PgoAnalysisMapFeatures.isSet(PGOMapFeaturesEnum::BrProb),
bool NoFeatures = PgoAnalysisMapFeatures.isSet(PGOMapFeaturesEnum::None);
bool AllFeatures = PgoAnalysisMapFeatures.isSet(PGOMapFeaturesEnum::All);
bool FuncEntryCountEnabled =
AllFeatures || (!NoFeatures && PgoAnalysisMapFeatures.isSet(
PGOMapFeaturesEnum::FuncEntryCount));
bool BBFreqEnabled =
AllFeatures ||
(!NoFeatures && PgoAnalysisMapFeatures.isSet(PGOMapFeaturesEnum::BBFreq));
bool BrProbEnabled =
AllFeatures ||
(!NoFeatures && PgoAnalysisMapFeatures.isSet(PGOMapFeaturesEnum::BrProb));
return {FuncEntryCountEnabled, BBFreqEnabled, BrProbEnabled,
MF.hasBBSections() && NumMBBSectionRanges > 1};
}

Expand Down
7 changes: 6 additions & 1 deletion llvm/test/CodeGen/X86/basic-block-address-map-pgo-features.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,8 +1,10 @@
; Check the basic block sections labels option
; RUN: llc < %s -mtriple=x86_64 -function-sections -unique-section-names=true -basic-block-address-map | FileCheck %s --check-prefixes=CHECK,BASIC
; RUN: llc < %s -mtriple=x86_64 -function-sections -unique-section-names=true -basic-block-address-map | FileCheck %s --check-prefixes=CHECK,BASIC,PGO-NONE
; RUN: llc < %s -mtriple=x86_64 -function-sections -unique-section-names=true -basic-block-address-map -pgo-analysis-map=none | FileCheck %s --check-prefixes=CHECK,BASIC,PGO-NONE

;; Also verify this holds for all PGO features enabled
; RUN: llc < %s -mtriple=x86_64 -function-sections -unique-section-names=true -basic-block-address-map -pgo-analysis-map=func-entry-count,bb-freq,br-prob | FileCheck %s --check-prefixes=CHECK,PGO-ALL,PGO-FEC,PGO-BBF,PGO-BRP
; RUN: llc < %s -mtriple=x86_64 -function-sections -unique-section-names=true -basic-block-address-map -pgo-analysis-map=all | FileCheck %s --check-prefixes=CHECK,PGO-ALL,PGO-FEC,PGO-BBF,PGO-BRP

;; Also verify that pgo extension only includes the enabled feature
; RUN: llc < %s -mtriple=x86_64 -function-sections -unique-section-names=true -basic-block-address-map -pgo-analysis-map=func-entry-count | FileCheck %s --check-prefixes=CHECK,PGO-FEC,FEC-ONLY
Expand Down Expand Up @@ -93,6 +95,9 @@ declare i32 @__gxx_personality_v0(...)
; CHECK-NEXT: .byte 4

;; PGO Analysis Map
; PGO-NONE-NOT: .byte 100 # function entry count
; PGO-NONE-NOT: .ascii "\271\235\376\332\245\200\356\017" # basic block frequency
; PGO-NONE-NOT: .byte 2 # basic block successor count
; PGO-FEC-NEXT: .byte 100 # function entry count
; PGO-BBF-NEXT: .ascii "\271\235\376\332\245\200\356\017" # basic block frequency
; PGO-BRP-NEXT: .byte 2 # basic block successor count
Expand Down