[thinlto] Implement the import of vtable definitions.

[minglotus-6]

In per-module summary generation, looks at instructions with vtable value profile metadata, and adds referenced vtables to the read-only refs of the function.

• This depends on [InstrFDO][TypeProf] Implement binary instrumentation and profile read/write #66825 to introduce the new kind of value profile type.

The related rfc is https://discourse.llvm.org/t/rfc-dynamic-type-profiling-and-optimizations-in-llvm/74600

[github-actions]

⚠️ C/C++ code formatter, clang-format found issues in your code. ⚠️

You can test this locally with the following command:

git-clang-format --diff 0718c1a8405ac130d72cd3525befed2911618cc7 ad4ec98b508eae67133187a0948092da5fee8e36 -- compiler-rt/lib/profile/InstrProfiling.h compiler-rt/lib/profile/InstrProfilingBuffer.c compiler-rt/lib/profile/InstrProfilingInternal.h compiler-rt/lib/profile/InstrProfilingMerge.c compiler-rt/lib/profile/InstrProfilingPlatformLinux.c compiler-rt/lib/profile/InstrProfilingWriter.c llvm/include/llvm/Analysis/IndirectCallVisitor.h llvm/include/llvm/ProfileData/InstrProf.h llvm/include/llvm/ProfileData/InstrProfReader.h llvm/include/llvm/ProfileData/InstrProfWriter.h llvm/include/llvm/Transforms/Instrumentation/InstrProfiling.h llvm/lib/Analysis/ModuleSummaryAnalysis.cpp llvm/lib/Bitcode/Writer/BitcodeWriter.cpp llvm/lib/ProfileData/InstrProf.cpp llvm/lib/ProfileData/InstrProfReader.cpp llvm/lib/ProfileData/InstrProfWriter.cpp llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp llvm/tools/llvm-profdata/llvm-profdata.cpp

View the diff from clang-format here.

diff --git a/llvm/include/llvm/ProfileData/InstrProf.h b/llvm/include/llvm/ProfileData/InstrProf.h
index c9e295f0cf..85491d33bc 100644
--- a/llvm/include/llvm/ProfileData/InstrProf.h
+++ b/llvm/include/llvm/ProfileData/InstrProf.h
@@ -578,8 +578,9 @@ public:
     AddrToMD5Map.push_back(std::make_pair(Addr, MD5Val));
   }
 
-  /// Map the address range (i.e., [start_address, end_address]) of a variable to
-  /// its names' MD5 hash. This interface is only used by the raw profile header.
+  /// Map the address range (i.e., [start_address, end_address]) of a variable
+  /// to its names' MD5 hash. This interface is only used by the raw profile
+  /// header.
   void mapVTableAddress(uint64_t StartAddr, uint64_t EndAddr, uint64_t MD5Val) {
     VTableAddrRangeToMD5Map.push_back(
         std::make_pair(std::make_pair(StartAddr, EndAddr), MD5Val));
diff --git a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
index bb06670d34..613b2596e0 100644
--- a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
+++ b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
@@ -1214,8 +1214,8 @@ void InstrProfiling::getOrCreateVTableProfData(GlobalVariable *GV) {
   UsedVars.push_back(Data);
 }
 
-GlobalVariable *
-InstrProfiling::setupProfileSection(InstrProfInstBase *Inc, InstrProfSectKind IPSK) {
+GlobalVariable *InstrProfiling::setupProfileSection(InstrProfInstBase *Inc,
+                                                    InstrProfSectKind IPSK) {
   GlobalVariable *NamePtr = Inc->getName();
 
   // Match the linkage and visibility of the name global.
diff --git a/llvm/tools/llvm-profdata/llvm-profdata.cpp b/llvm/tools/llvm-profdata/llvm-profdata.cpp
index e4bbb36de4..cd512fb730 100644
--- a/llvm/tools/llvm-profdata/llvm-profdata.cpp
+++ b/llvm/tools/llvm-profdata/llvm-profdata.cpp
@@ -1225,13 +1225,13 @@ static int merge_main(int argc, const char *argv[]) {
                  clEnumVal(sample, "Sample profile")));
   cl::opt<ProfileFormat> OutputFormat(
       cl::desc("Format of output profile"), cl::init(PF_Ext_Binary),
-      cl::values(
-          clEnumValN(PF_Binary, "binary", "Binary encoding"),
-          clEnumValN(PF_Ext_Binary, "extbinary", "Extensible binary encoding "
-                     "(default)"),
-          clEnumValN(PF_Text, "text", "Text encoding"),
-          clEnumValN(PF_GCC, "gcc",
-                     "GCC encoding (only meaningful for -sample)")));
+      cl::values(clEnumValN(PF_Binary, "binary", "Binary encoding"),
+                 clEnumValN(PF_Ext_Binary, "extbinary",
+                            "Extensible binary encoding "
+                            "(default)"),
+                 clEnumValN(PF_Text, "text", "Text encoding"),
+                 clEnumValN(PF_GCC, "gcc",
+                            "GCC encoding (only meaningful for -sample)")));
   cl::opt<FailureMode> FailureMode(
       "failure-mode", cl::init(failIfAnyAreInvalid), cl::desc("Failure mode:"),
       cl::values(
@@ -1240,7 +1240,8 @@ static int merge_main(int argc, const char *argv[]) {
                      "Fail if any profile is invalid."),
           clEnumValN(failIfAllAreInvalid, "all",
                      "Fail only if all profiles are invalid.")));
-  cl::opt<bool> OutputSparse("sparse", cl::init(false),
+  cl::opt<bool> OutputSparse(
+      "sparse", cl::init(false),
       cl::desc("Generate a sparse profile (only meaningful for -instr)"));
   cl::opt<unsigned> NumThreads(
       "num-threads", cl::init(0),

[minglotus-6]

Superseded by #79381