Fix PR 7662.

Do not try to insert local variable info to a DIE used for function declaration.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108731 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 65c1d190216fa72ff85d59fdb086ae3633b3ef1f..d891ce8a475a1a49f63b2f0aed553b48ed80d7b0 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2032,6 +2032,7 @@ void DwarfDebug::endModule() {
       if (!SP.Verify()) continue;
 
       // Collect info for variables that were optimized out.
+      if (!SP.isDefinition()) continue;
       StringRef FName = SP.getLinkageName();
       if (FName.empty())
         FName = SP.getName();

diff --git a/test/DebugInfo/2010-07-19-Crash.ll b/test/DebugInfo/2010-07-19-Crash.ll
new file mode 100644 (file)
index 0000000..87a4a89
--- /dev/null
+++ b/test/DebugInfo/2010-07-19-Crash.ll
@@ -0,0 +1,24 @@
+; RUN: llc -o /dev/null < %s
+; PR7662
+; Do not add variables to !11 because it is a declaration entry.
+
+define i32 @bar() nounwind readnone ssp {
+entry:
+  ret i32 42, !dbg !9
+}
+
+!llvm.dbg.sp = !{!0, !6, !11}
+!llvm.dbg.lv.foo = !{!7}
+
+!0 = metadata !{i32 524334, i32 0, metadata !1, metadata !"bar", metadata !"bar", metadata !"bar", metadata !1, i32 3, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true, i32 ()* @bar} ; [ DW_TAG_subprogram ]
+!1 = metadata !{i32 524329, metadata !"one.c", metadata !"/private/tmp", metadata !2} ; [ DW_TAG_file_type ]
+!2 = metadata !{i32 524305, i32 0, i32 12, metadata !"one.c", metadata !".", metadata !"clang 2.8", i1 true, i1 true, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
+!3 = metadata !{i32 524309, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null} ; [ DW_TAG_subroutine_type ]
+!4 = metadata !{metadata !5}
+!5 = metadata !{i32 524324, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
+!6 = metadata !{i32 524334, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", metadata !1, i32 7, metadata !3, i1 true, i1 true, i32 0, i32 0, null, i1 false, i1 true, null} ; [ DW_TAG_subprogram ]
+!11 = metadata !{i32 524334, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", metadata !1, i32 7, metadata !3, i1 true, i1 false, i32 0, i32 0, null, i1 false, i1 true, null} ; [ DW_TAG_subprogram ]
+!7 = metadata !{i32 524544, metadata !8, metadata !"one", metadata !1, i32 8, metadata !5} ; [ DW_TAG_auto_variable ]
+!8 = metadata !{i32 524299, metadata !6, i32 7, i32 18} ; [ DW_TAG_lexical_block ]
+!9 = metadata !{i32 4, i32 3, metadata !10, null}
+!10 = metadata !{i32 524299, metadata !0, i32 3, i32 11} ; [ DW_TAG_lexical_block ]