[llvm] r225378 - Debug info: Allow aggregate types to be described by constants.
Adrian Prantl
aprantl at apple.com
Wed Jan 7 12:48:59 PST 2015
Author: adrian
Date: Wed Jan 7 14:48:58 2015
New Revision: 225378
URL: http://llvm.org/viewvc/llvm-project?rev=225378&view=rev
Log:
Debug info: Allow aggregate types to be described by constants.
Added:
llvm/trunk/test/DebugInfo/X86/constant-aggregate.ll
Modified:
llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp?rev=225378&r1=225377&r2=225378&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfUnit.cpp Wed Jan 7 14:48:58 2015
@@ -630,10 +630,13 @@ static bool isUnsignedDIType(DwarfDebug
// FIXME: reference and rvalue_reference /probably/ shouldn't be allowed
// here, but accept them for now due to a bug in SROA producing bogus
// dbg.values.
- if (T == dwarf::DW_TAG_pointer_type ||
+ if (T == dwarf::DW_TAG_array_type ||
+ T == dwarf::DW_TAG_class_type ||
+ T == dwarf::DW_TAG_pointer_type ||
T == dwarf::DW_TAG_ptr_to_member_type ||
T == dwarf::DW_TAG_reference_type ||
- T == dwarf::DW_TAG_rvalue_reference_type)
+ T == dwarf::DW_TAG_rvalue_reference_type ||
+ T == dwarf::DW_TAG_structure_type)
return true;
assert(T == dwarf::DW_TAG_typedef || T == dwarf::DW_TAG_const_type ||
T == dwarf::DW_TAG_volatile_type ||
Added: llvm/trunk/test/DebugInfo/X86/constant-aggregate.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/constant-aggregate.ll?rev=225378&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/X86/constant-aggregate.ll (added)
+++ llvm/trunk/test/DebugInfo/X86/constant-aggregate.ll Wed Jan 7 14:48:58 2015
@@ -0,0 +1,118 @@
+; RUN: llc %s -filetype=obj -o %t.o
+; RUN: llvm-dwarfdump -debug-dump=info %t.o | FileCheck %s
+; Test emitting a constant for an aggregate type.
+;
+; clang -S -O1 -emit-llvm
+;
+; typedef struct { unsigned i; } S;
+;
+; unsigned foo(S s) {
+; s.i = 1;
+; return s.i;
+; }
+;
+; class C { public: unsigned i; };
+;
+; unsigned foo(C c) {
+; c.i = 2;
+; return c.i;
+; }
+;
+; unsigned bar() {
+; int a[1] = { 3 };
+; return a[0];
+; }
+;
+; CHECK: DW_TAG_formal_parameter
+; CHECK-NEXT: DW_AT_const_value [DW_FORM_udata] (1)
+; CHECK-NEXT: DW_AT_name {{.*}} "s"
+;
+; CHECK: DW_TAG_formal_parameter
+; CHECK-NEXT: DW_AT_const_value [DW_FORM_udata] (2)
+; CHECK-NEXT: DW_AT_name {{.*}} "c"
+;
+; CHECK: DW_TAG_variable
+; CHECK-NEXT: DW_AT_const_value [DW_FORM_udata] (3)
+; CHECK-NEXT: DW_AT_name {{.*}} "a"
+
+; ModuleID = 'sroasplit-4.cpp'
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.10.0"
+
+; Function Attrs: nounwind readnone ssp uwtable
+define i32 @_Z3foo1S(i32 %s.coerce) #0 {
+entry:
+ tail call void @llvm.dbg.value(metadata i32 %s.coerce, i64 0, metadata !18, metadata !37), !dbg !38
+ tail call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !18, metadata !37), !dbg !38
+ ret i32 1, !dbg !39
+}
+
+; Function Attrs: nounwind readnone ssp uwtable
+define i32 @_Z3foo1C(i32 %c.coerce) #0 {
+entry:
+ tail call void @llvm.dbg.value(metadata i32 %c.coerce, i64 0, metadata !23, metadata !37), !dbg !40
+ tail call void @llvm.dbg.value(metadata i32 2, i64 0, metadata !23, metadata !37), !dbg !40
+ ret i32 2, !dbg !41
+}
+
+; Function Attrs: nounwind readnone ssp uwtable
+define i32 @_Z3barv() #0 {
+entry:
+ tail call void @llvm.dbg.value(metadata i32 3, i64 0, metadata !28, metadata !37), !dbg !42
+ ret i32 3, !dbg !43
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
+
+attributes #0 = { nounwind readnone ssp uwtable }
+attributes #1 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!33, !34, !35}
+!llvm.ident = !{!36}
+
+!0 = !{!"0x11\004\00clang version 3.6.0 (trunk 225364) (llvm/trunk 225366)\001\00\000\00\001", !1, !2, !3, !11, !2, !2} ; [ DW_TAG_compile_unit ] [/sroasplit-4.cpp] [DW_LANG_C_plus_plus]
+!1 = !{!"sroasplit-4.cpp", !""}
+!2 = !{}
+!3 = !{!4, !8}
+!4 = !{!"0x13\00\001\0032\0032\000\000\000", !1, null, null, !5, null, null, !"_ZTS1S"} ; [ DW_TAG_structure_type ] [line 1, size 32, align 32, offset 0] [def] [from ]
+!5 = !{!6}
+!6 = !{!"0xd\00i\001\0032\0032\000\000", !1, !"_ZTS1S", !7} ; [ DW_TAG_member ] [i] [line 1, size 32, align 32, offset 0] [from unsigned int]
+!7 = !{!"0x24\00unsigned int\000\0032\0032\000\000\007", null, null} ; [ DW_TAG_base_type ] [unsigned int] [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned]
+!8 = !{!"0x2\00C\008\0032\0032\000\000\000", !1, null, null, !9, null, null, !"_ZTS1C"} ; [ DW_TAG_class_type ] [C] [line 8, size 32, align 32, offset 0] [def] [from ]
+!9 = !{!10}
+!10 = !{!"0xd\00i\008\0032\0032\000\003", !1, !"_ZTS1C", !7} ; [ DW_TAG_member ] [i] [line 8, size 32, align 32, offset 0] [public] [from unsigned int]
+!11 = !{!12, !19, !24}
+!12 = !{!"0x2e\00foo\00foo\00_Z3foo1S\003\000\001\000\000\00256\001\003", !1, !13, !14, null, i32 (i32)* @_Z3foo1S, null, null, !17} ; [ DW_TAG_subprogram ] [line 3] [def] [foo]
+!13 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/sroasplit-4.cpp]
+!14 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !15, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!15 = !{!7, !16}
+!16 = !{!"0x16\00S\001\000\000\000\000", !1, null, !"_ZTS1S"} ; [ DW_TAG_typedef ] [S] [line 1, size 0, align 0, offset 0] [from _ZTS1S]
+!17 = !{!18}
+!18 = !{!"0x101\00s\0016777219\000", !12, !13, !16} ; [ DW_TAG_arg_variable ] [s] [line 3]
+!19 = !{!"0x2e\00foo\00foo\00_Z3foo1C\0010\000\001\000\000\00256\001\0010", !1, !13, !20, null, i32 (i32)* @_Z3foo1C, null, null, !22} ; [ DW_TAG_subprogram ] [line 10] [def] [foo]
+!20 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !21, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!21 = !{!7, !"_ZTS1C"}
+!22 = !{!23}
+!23 = !{!"0x101\00c\0016777226\000", !19, !13, !"_ZTS1C"} ; [ DW_TAG_arg_variable ] [c] [line 10]
+!24 = !{!"0x2e\00bar\00bar\00_Z3barv\0015\000\001\000\000\00256\001\0015", !1, !13, !25, null, i32 ()* @_Z3barv, null, null, !27} ; [ DW_TAG_subprogram ] [line 15] [def] [bar]
+!25 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !26, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!26 = !{!7}
+!27 = !{!28}
+!28 = !{!"0x100\00a\0016\000", !24, !13, !29} ; [ DW_TAG_auto_variable ] [a] [line 16]
+!29 = !{!"0x1\00\000\0032\0032\000\000\000", null, null, !30, !31, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 32, align 32, offset 0] [from int]
+!30 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
+!31 = !{!32}
+!32 = !{!"0x21\000\001"} ; [ DW_TAG_subrange_type ] [0, 0]
+!33 = !{i32 2, !"Dwarf Version", i32 2}
+!34 = !{i32 2, !"Debug Info Version", i32 2}
+!35 = !{i32 1, !"PIC Level", i32 2}
+!36 = !{!"clang version 3.6.0 (trunk 225364) (llvm/trunk 225366)"}
+!37 = !{!"0x102"} ; [ DW_TAG_expression ]
+!38 = !{i32 3, i32 16, !12, null}
+!39 = !{i32 5, i32 3, !12, null}
+!40 = !{i32 10, i32 16, !19, null}
+!41 = !{i32 12, i32 3, !19, null}
+!42 = !{i32 16, i32 6, !24, null}
+!43 = !{i32 17, i32 3, !24, null}
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