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commit 4840cf7299bb312125d41fc84733c15c2370f18e
Author: DokFaust <rodia@autistici.org>
Date: Fri Jun 8 19:23:01 2018 +0200
Add debug line-level code information to OProfile module
diff --git a/lib/ExecutionEngine/OProfileJIT/LLVMBuild.txt b/lib/ExecutionEngine/OProfileJIT/LLVMBuild.txt
index 7d5550046a5..ea100286318 100644
--- a/lib/ExecutionEngine/OProfileJIT/LLVMBuild.txt
+++ b/lib/ExecutionEngine/OProfileJIT/LLVMBuild.txt
@@ -24 +24 @@ parent = ExecutionEngine
-required_libraries = Support Object ExecutionEngine
+required_libraries = DebugInfoDWARF Support Object ExecutionEngine
diff --git a/lib/ExecutionEngine/OProfileJIT/OProfileJITEventListener.cpp b/lib/ExecutionEngine/OProfileJIT/OProfileJITEventListener.cpp
index 3581d645839..045ecb82853 100644
--- a/lib/ExecutionEngine/OProfileJIT/OProfileJITEventListener.cpp
+++ b/lib/ExecutionEngine/OProfileJIT/OProfileJITEventListener.cpp
@@ -26,0 +27,2 @@
+#include "llvm/DebugInfo/DIContext.h"
+#include "llvm/DebugInfo/DWARF/DWARFContext.h"
@@ -86,0 +89,2 @@ void OProfileJITEventListener::NotifyObjectEmitted(
+ std::unique_ptr<DIContext> Context = DWARFContext::create(DebugObj);
+ std::string SourceFileName;
@@ -111 +115,23 @@ void OProfileJITEventListener::NotifyObjectEmitted(
- // TODO: support line number info (similar to IntelJITEventListener.cpp)
+ DILineInfoTable Lines = Context->getLineInfoForAddressRange(Addr, Size);
+ DILineInfoTable::iterator Begin = Lines.begin();
+ DILineInfoTable::iterator End = Lines.end();
+ size_t i = 0;
+
+ size_t num_entries = std::distance(Begin, End);
+ static struct debug_line_info* debug_line;
+ debug_line = (struct debug_line_info * )calloc(num_entries, sizeof(struct debug_line_info));
+
+ for(DILineInfoTable::iterator It=Begin; It != End; ++It){
+ i = std::distance(Begin,It);
+ debug_line[i].vma = (unsigned long) It->first;
+ debug_line[i].lineno = It->second.Line;
+ SourceFileName = Lines.front().second.FileName;
+ debug_line[i].filename = const_cast<char *>(SourceFileName.c_str());
+ }
+
+ if(Wrapper->op_write_debug_line_info((void*) Addr, num_entries, debug_line) == -1) {
+ DEBUG(dbgs() << "Failed to tell OProfiler about debug object at ["
+ << (void*) Addr << "-" << ((char *) Addr + Size)
+ << "]\n");
+ continue;
+ }
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