Merge .debug_loc entries whenever possible to reduce debug_loc size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124904 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index d8c15fb..0ecb3df 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -3580,6 +3580,14 @@
if (DotDebugLocEntries.empty())
return;
+ for (SmallVector<DotDebugLocEntry, 4>::iterator
+ I = DotDebugLocEntries.begin(), E = DotDebugLocEntries.end();
+ I != E; ++I) {
+ DotDebugLocEntry &Entry = *I;
+ if (I + 1 != DotDebugLocEntries.end())
+ Entry.Merge(I+1);
+ }
+
// Start the dwarf loc section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfLocSection());
@@ -3589,7 +3597,8 @@
for (SmallVector<DotDebugLocEntry, 4>::iterator
I = DotDebugLocEntries.begin(), E = DotDebugLocEntries.end();
I != E; ++I, ++index) {
- DotDebugLocEntry Entry = *I;
+ DotDebugLocEntry &Entry = *I;
+ if (Entry.isMerged()) continue;
if (Entry.isEmpty()) {
Asm->OutStreamer.EmitIntValue(0, Size, /*addrspace*/0);
Asm->OutStreamer.EmitIntValue(0, Size, /*addrspace*/0);