Right now, Debugging information to encode scopes (DW_TAG_lexical_block) relies on DBG_LABEL. Unfortunately this intefers with the quality of optimized code.
This patch updates dwarf writer to encode scoping information in DWARF only in FastISel mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68973 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
index c619bc5..c4191e5 100644
--- a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
@@ -3296,7 +3296,7 @@
}
/// ValidDebugInfo - Return true if V represents valid debug info value.
- bool ValidDebugInfo(Value *V) {
+ bool ValidDebugInfo(Value *V, bool FastISel) {
if (!V)
return false;
@@ -3335,6 +3335,11 @@
case DW_TAG_subprogram:
assert(DISubprogram(GV).Verify() && "Invalid DebugInfo value");
break;
+ case DW_TAG_lexical_block:
+ /// FIXME. This interfers with the qualitfy of generated code when
+ /// during optimization.
+ if (FastISel == false)
+ return false;
default:
break;
}
@@ -4621,8 +4626,8 @@
}
/// ValidDebugInfo - Return true if V represents valid debug info value.
-bool DwarfWriter::ValidDebugInfo(Value *V) {
- return DD && DD->ValidDebugInfo(V);
+bool DwarfWriter::ValidDebugInfo(Value *V, bool FastISel) {
+ return DD && DD->ValidDebugInfo(V, FastISel);
}
/// RecordSourceLine - Records location information and associates it with a