The end of the prologue should be marked with is_stmt.

Fixes PR13303.

Patch by Paul Robinson!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160148 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 038792b426a32c46747c9c652df07401e2efc0bb..649684adbf04ca633a84d2999e2f6e778f2bde97 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1382,7 +1382,7 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
                                        MF->getFunction()->getContext());
     recordSourceLine(FnStartDL.getLine(), FnStartDL.getCol(),
                      FnStartDL.getScope(MF->getFunction()->getContext()),
-                     0);
+                     DWARF2_LINE_DEFAULT_IS_STMT ? DWARF2_FLAG_IS_STMT : 0);
   }
 }
 

diff --git a/test/DebugInfo/X86/pr13303.ll b/test/DebugInfo/X86/pr13303.ll
new file mode 100644 (file)
index 0000000..e820cb5
--- /dev/null
+++ b/test/DebugInfo/X86/pr13303.ll
@@ -0,0 +1,28 @@
+; RUN: llc %s -o %t -filetype=obj -mtriple=x86_64-unknown-linux-gnu
+; RUN: llvm-dwarfdump %t | FileCheck %s
+; PR13303
+
+; Check that the prologue ends with is_stmt here.
+; CHECK: 0x0000000000000000 {{.*}} is_stmt
+
+define i32 @main() nounwind uwtable {
+entry:
+  %retval = alloca i32, align 4
+  store i32 0, i32* %retval
+  ret i32 0, !dbg !10
+}
+
+!llvm.dbg.cu = !{!0}
+
+!0 = metadata !{i32 786449, i32 0, i32 12, metadata !"PR13303.c", metadata !"/home/probinson", metadata !"clang version 3.2 (trunk 160143)", i1 true, i1 false, metadata !"", i32 0, metadata !1, metadata !1, metadata !3, metadata !1} ; [ DW_TAG_compile_unit ] [/home/probinson/PR13303.c] [DW_LANG_C99]
+!1 = metadata !{metadata !2}
+!2 = metadata !{i32 0}
+!3 = metadata !{metadata !4}
+!4 = metadata !{metadata !5}
+!5 = metadata !{i32 786478, i32 0, metadata !6, metadata !"main", metadata !"main", metadata !"", metadata !6, i32 1, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, i32 ()* @main, null, null, metadata !1, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [main]
+!6 = metadata !{i32 786473, metadata !"PR13303.c", metadata !"/home/probinson", null} ; [ DW_TAG_file_type ]
+!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!8 = metadata !{metadata !9}
+!9 = metadata !{i32 786468, null, metadata !"int", null, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
+!10 = metadata !{i32 1, i32 14, metadata !11, null}
+!11 = metadata !{i32 786443, metadata !5, i32 1, i32 12, metadata !6, i32 0} ; [ DW_TAG_lexical_block ] [/home/probinson/PR13303.c]