Omit all the extra static attributes on subprograms in -gmlt

This omission will be done in a fancier manner once we're dealing with
"put gmlt in the skeleton CUs under fission" - it'll have to be
conditional on the kind of CU we're emitting into (skeleton or gmlt).

llvm-svn: 218098

2 files changed, 12 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index 8561b5dd4f4..0c3c258e1f7 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -1482,6 +1482,9 @@ void DwarfUnit::applySubprogramAttributes(DISubprogram SP, DIE &SPDie) {
   if (!SP.getName().empty())
     addString(SPDie, dwarf::DW_AT_name, SP.getName());
 
+  if(getCUNode().getEmissionKind() == DIBuilder::LineTablesOnly)
+    return;
+
   addSourceLine(SPDie, SP);
 
   // Add the prototype if we have a prototype and we have a C like
diff --git a/llvm/test/DebugInfo/cu-line-tables.ll b/llvm/test/DebugInfo/gmlt.ll
index f81b01e54cb..3ace56feae5 100644
--- a/llvm/test/DebugInfo/cu-line-tables.ll
+++ b/llvm/test/DebugInfo/gmlt.ll
@@ -16,6 +16,15 @@
 ; attribute on the CU.
 ; CHECK: DW_TAG_compile_unit
 ; CHECK-NOT: DW_AT_ranges
+; CHECK-NOT: {{DW_TAG|NULL}}
+; Check that we only provide the minimal attributes on a subprogram to save space.
+; CHECK:   DW_TAG_subprogram
+; CHECK-NEXT:     DW_AT_low_pc
+; CHECK-NEXT:     DW_AT_high_pc
+; FIXME: We don't need the DW_AT_frame_base for -gmlt.
+; CHECK-NEXT:     DW_AT_frame_base
+; CHECK-NEXT:     DW_AT_name
+; CHECK-NOT: DW_AT
 ; CHECK: {{DW_TAG|NULL}}
 
 ; FIXME: We probably want to avoid printing out anything if the section isn't there.