dwarfdump: Use the index to find the right abbrev offset in DWP files

llvm-svn: 253277

2 files changed, 24 insertions, 7 deletions

diff --git a/llvm/test/DebugInfo/Inputs/dwarfdump-dwp.x86_64.o b/llvm/test/DebugInfo/Inputs/dwarfdump-dwp.x86_64.o
index 2b7ed526ca9..da059f73b9f 100644
--- a/llvm/test/DebugInfo/Inputs/dwarfdump-dwp.x86_64.o
+++ b/llvm/test/DebugInfo/Inputs/dwarfdump-dwp.x86_64.o
diff --git a/llvm/test/DebugInfo/dwarfdump-dwp.test b/llvm/test/DebugInfo/dwarfdump-dwp.test
index 953a58cb4af..0dbe1edf246 100644
--- a/llvm/test/DebugInfo/dwarfdump-dwp.test
+++ b/llvm/test/DebugInfo/dwarfdump-dwp.test
@@ -6,20 +6,37 @@ RUN: llvm-dwarfdump %p/Inputs/dwarfdump-dwp.x86_64.o | FileCheck %s
 ;   foo a;
 ; b.cpp:
 ;   struct bar { };
-;   bar b;
+;   bar b() {
+;   }
+
+; CHECK: .debug_info.dwo contents:
+; CHECK: Compile Unit
+
+; Verify that the second CU uses the index for its abbrev offset
+; CHECK: Compile Unit
+; CHECK-SAME: abbr_offset = 0x0043
+; CHECK: DW_TAG_compile_unit
+; CHECK-NOT: DW_TAG
+; FIXME: Implement str_offsets support so we find b.cpp here \/
+; CHECK:   DW_AT_name {{.*}} "a.cpp"
+
+; Verify that abbreviations are decoded using the abbrev offset in the index
+; CHECK:   DW_TAG_subprogram
+; CHECK:   DW_TAG_structure_type
 
 ; CHECK: .debug_cu_index contents:
 ; CHECK-NEXT: version = 2 slots = 16
-; CHECK:      Index Signature          INFO                     ABBREV                   LINE                     STR_OFFSETS            
+; CHECK:      Index Signature          INFO                     ABBREV                   LINE                     STR_OFFSETS
 ; CHECK-NEXT: ----- ------------------ ------------------------ ------------------------ ------------------------ ------------------------
-; CHECK-NEXT:     8 0x03c30756e2d45008 [0x00000000, 0x00000045) [0x00000000, 0x00000067) [0x00000000, 0x00000026) [0x00000000, 0x00000016)
-; CHECK-NEXT:    12 0x9aeb3a61ed48510c [0x00000045, 0x00000090) [0x00000067, 0x00000134) [0x00000026, 0x00000052) [0x00000016, 0x00000032)
+; CHECK-NEXT:     2 0xfef104c25502f092 [0x0000002d, 0x0000005f) [0x00000043, 0x0000008e) [0x0000001a, 0x00000034) [0x00000010, 0x00000024)
+; CHECK-NEXT:     8 0x03c30756e2d45008 [0x00000000, 0x0000002d) [0x00000000, 0x00000043) [0x00000000, 0x0000001a) [0x00000000, 0x00000010)
 
 ; CHECK: .debug_tu_index contents:
 ; CHECK-NEXT: version = 2 slots = 16
 ; CHECK:      Index Signature          TYPES                    ABBREV                   LINE                     STR_OFFSETS
 ; CHECK-NEXT: ----- ------------------ ------------------------ ------------------------ ------------------------ ------------------------
-; CHECK-NEXT:     8 0x1d02f3be30cc5688 [0x00000036, 0x00000072) [0x00000067, 0x00000134) [0x00000026, 0x00000052) [0x00000016, 0x00000032)
-; CHECK-NEXT:    12 0x3875c0e21cda63fc [0x00000000, 0x00000036) [0x00000000, 0x00000067) [0x00000000, 0x00000026) [0x00000000, 0x00000016)
+; CHECK-NEXT:     8 0x1d02f3be30cc5688 [0x00000024, 0x00000048) [0x00000043, 0x0000008e) [0x0000001a, 0x00000034) [0x00000010, 0x00000024)
+; CHECK-NEXT:    12 0x3875c0e21cda63fc [0x00000000, 0x00000024) [0x00000000, 0x00000043) [0x00000000, 0x0000001a) [0x00000000, 0x00000010)
 
-; TODO: use the index section offset info to correctly dump debug_info
+; TODO: use the index section offset info to correctly dump strings in debug info
+; TODO: use the index section offset info to correctly dump file names in debug info