Output DW_AT_stmt_list dwarf debug info as DW_FORM_sec_offset instead of DW_FORM_data...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188297 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index e81b933ee590afd2f908692e2cd030a781a94fe2..8fd208ac48630d1269474438de4aa9a561c84b4a 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -740,7 +740,7 @@ CompileUnit *DwarfDebug::constructCompileUnit(const MDNode *N) {
   // is not okay to use line_table_start here.
   if (!useSplitDwarf()) {
     if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
-      NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
+      NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_sec_offset,
                       UseTheFirstCU ?
                       Asm->GetTempSymbol("section_line") : LineTableStartSym);
     else if (UseTheFirstCU)

diff --git a/test/DebugInfo/X86/DW_AT_stmt_list_sec_offset.ll b/test/DebugInfo/X86/DW_AT_stmt_list_sec_offset.ll
new file mode 100644 (file)
index 0000000..366b4e0
--- /dev/null
+++ b/test/DebugInfo/X86/DW_AT_stmt_list_sec_offset.ll
@@ -0,0 +1,40 @@
+; RUN: llc -mtriple=i686-w64-mingw32 -o %t -filetype=obj %s\r
+; RUN: llvm-dwarfdump -debug-dump=all %t | FileCheck %s\r
+\r
+; CHECK:        DW_AT_stmt_list [DW_FORM_sec_offset]\r
+;\r
+; generated from:\r
+; clang -g -S -emit-llvm test.c -o test.ll\r
+; int main()\r
+; {\r
+;      return 0;\r
+; }\r
+\r
+; ModuleID = 'test.c'\r
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f80:128:128-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S32"\r
+target triple = "i686-pc-win32"\r
+\r
+; Function Attrs: nounwind\r
+define i32 @main() #0 {\r
+entry:\r
+  %retval = alloca i32, align 4\r
+  store i32 0, i32* %retval\r
+  ret i32 0, !dbg !10\r
+}\r
+\r
+attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }\r
+\r
+!llvm.dbg.cu = !{!0}\r
+!llvm.module.flags = !{!9}\r
+\r
+!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.4 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [C:\Projects/test.c] [DW_LANG_C99]\r
+!1 = metadata !{metadata !"test.c", metadata !"C:\5CProjects"}\r
+!2 = metadata !{i32 0}\r
+!3 = metadata !{metadata !4}\r
+!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"main", metadata !"main", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, i32 ()* @main, null, null, metadata !2, i32 2} ; [ DW_TAG_subprogram ] [line 1] [def] [scope 2] [main]\r
+!5 = metadata !{i32 786473, metadata !1}          ; [ DW_TAG_file_type ] [C:\Projects/test.c]\r
+!6 = metadata !{i32 786453, i32 0, i32 0, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]\r
+!7 = metadata !{metadata !8}\r
+!8 = metadata !{i32 786468, null, null, metadata !"int", 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]\r
+!9 = metadata !{i32 2, metadata !"Dwarf Version", i32 3}\r
+!10 = metadata !{i32 3, i32 0, metadata !4, null}\r