[SanitizerCoverage] Use llvm::getDISubprogram() to get location of the entry basic block.
DebugLoc::getFnDebugLoc() should soon be removed. Also,
getDISubprogram() might become more effective soon and wouldn't need to
scan debug locations at all, if function-level metadata would be emitted
by Clang.
llvm-svn: 239586
diff --git a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
index f6ae0c2..dff39ef 100644
--- a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
+++ b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
@@ -33,6 +33,7 @@
#include "llvm/ADT/SmallVector.h"
#include "llvm/IR/CallSite.h"
#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InlineAsm.h"
@@ -385,9 +386,14 @@
}
bool IsEntryBB = &BB == &F.getEntryBlock();
- DebugLoc EntryLoc = IsEntryBB && IP->getDebugLoc()
- ? IP->getDebugLoc().getFnDebugLoc()
- : IP->getDebugLoc();
+ DebugLoc EntryLoc;
+ if (IsEntryBB) {
+ if (auto SP = getDISubprogram(&F))
+ EntryLoc = DebugLoc::get(SP->getScopeLine(), 0, SP);
+ } else {
+ EntryLoc = IP->getDebugLoc();
+ }
+
IRBuilder<> IRB(IP);
IRB.SetCurrentDebugLocation(EntryLoc);
SmallVector<Value *, 1> Indices;