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[llvm-profgen] More tweaks to warnings #68608
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@llvm/pr-subscribers-pgo ChangesTweaking warnings more to avoid flooding user log. Full diff: https://github.com/llvm/llvm-project/pull/68608.diff 2 Files Affected:
diff --git a/llvm/tools/llvm-profgen/ProfiledBinary.cpp b/llvm/tools/llvm-profgen/ProfiledBinary.cpp
index 85d7c1123fecaf6..400f6ea1f80318a 100644
--- a/llvm/tools/llvm-profgen/ProfiledBinary.cpp
+++ b/llvm/tools/llvm-profgen/ProfiledBinary.cpp
@@ -479,12 +479,6 @@ bool ProfiledBinary::dissassembleSymbol(std::size_t SI, ArrayRef<uint8_t> Bytes,
if (ShowDisassembly)
outs() << '<' << SymbolName << ">:\n";
- auto WarnInvalidInsts = [](uint64_t Start, uint64_t End) {
- WithColor::warning() << "Invalid instructions at "
- << format("%8" PRIx64, Start) << " - "
- << format("%8" PRIx64, End) << "\n";
- };
-
uint64_t Address = StartAddress;
// Size of a consecutive invalid instruction range starting from Address -1
// backwards.
@@ -577,7 +571,8 @@ bool ProfiledBinary::dissassembleSymbol(std::size_t SI, ArrayRef<uint8_t> Bytes,
}
if (InvalidInstLength) {
- WarnInvalidInsts(Address - InvalidInstLength, Address - 1);
+ AddrsWithInvalidInstruction.insert(
+ {Address - InvalidInstLength, Address - 1});
InvalidInstLength = 0;
}
} else {
@@ -588,7 +583,7 @@ bool ProfiledBinary::dissassembleSymbol(std::size_t SI, ArrayRef<uint8_t> Bytes,
}
if (InvalidInstLength)
- WarnInvalidInsts(Address - InvalidInstLength, Address - 1);
+ AddrsWithInvalidInstruction.insert({Address - InvalidInstLength, Address - 1});
if (ShowDisassembly)
outs() << "\n";
@@ -707,6 +702,19 @@ void ProfiledBinary::disassemble(const ELFObjectFileBase *Obj) {
}
}
+ if (!AddrsWithInvalidInstruction.empty()) {
+ WithColor::warning() << "Found " << AddrsWithInvalidInstruction.size()
+ << " invalid instructions\n";
+ if (ShowDetailedWarning) {
+ for (auto &Addr : AddrsWithInvalidInstruction) {
+ WithColor::warning()
+ << "Invalid instructions at " << format("%8" PRIx64, Addr.first)
+ << " - " << format("%8" PRIx64, Addr.second) << "\n";
+ }
+ }
+ AddrsWithInvalidInstruction.clear();
+ }
+
// Dissassemble rodata section to check if FS discriminator symbol exists.
checkUseFSDiscriminator(Obj, AllSymbols);
}
@@ -791,10 +799,12 @@ void ProfiledBinary::loadSymbolsFromDWARFUnit(DWARFUnit &CompilationUnit) {
FRange.StartAddress = StartAddress;
FRange.EndAddress = EndAddress;
} else {
- WithColor::warning()
- << "Duplicated symbol start address at "
- << format("%8" PRIx64, StartAddress) << " "
- << R.first->second.getFuncName() << " and " << Name << "\n";
+ AddrsWithMultipleSymbols.insert(StartAddress);
+ if (ShowDetailedWarning)
+ WithColor::warning()
+ << "Duplicated symbol start address at "
+ << format("%8" PRIx64, StartAddress) << " "
+ << R.first->second.getFuncName() << " and " << Name << "\n";
}
}
}
@@ -838,6 +848,11 @@ void ProfiledBinary::loadSymbolsFromDWARF(ObjectFile &Obj) {
if (BinaryFunctions.empty())
WithColor::warning() << "Loading of DWARF info completed, but no binary "
"functions have been retrieved.\n";
+ if (!AddrsWithMultipleSymbols.empty()) {
+ WithColor::warning() << "Found " << AddrsWithMultipleSymbols.size()
+ << " start addresses have multiple symbols\n";
+ AddrsWithMultipleSymbols.clear();
+ }
}
void ProfiledBinary::populateSymbolListFromDWARF(
diff --git a/llvm/tools/llvm-profgen/ProfiledBinary.h b/llvm/tools/llvm-profgen/ProfiledBinary.h
index a6d78c661cc1c31..2a29588ba9accb1 100644
--- a/llvm/tools/llvm-profgen/ProfiledBinary.h
+++ b/llvm/tools/llvm-profgen/ProfiledBinary.h
@@ -40,6 +40,7 @@
#include <string>
#include <unordered_map>
#include <unordered_set>
+#include <utility>
#include <vector>
namespace llvm {
@@ -226,6 +227,10 @@ class ProfiledBinary {
// GUID to Elf symbol start address map
DenseMap<uint64_t, uint64_t> SymbolStartAddrs;
+ // These maps are for temporary use of warning diagnosis.
+ DenseSet<int64_t> AddrsWithMultipleSymbols;
+ DenseSet<std::pair<uint64_t, uint64_t>> AddrsWithInvalidInstruction;
+
// Start address to Elf symbol GUID map
std::unordered_multimap<uint64_t, uint64_t> StartAddrToSymMap;
|
✅ With the latest revision this PR passed the C/C++ code formatter. |
WenleiHe
reviewed
Oct 13, 2023
WenleiHe
approved these changes
Oct 20, 2023
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lgtm, thanks.
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Tweaking warnings more to avoid flooding user log.