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Actually support DW_TAG_rvalue_reference_type that we were trying

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to generate out of the front end.

rdar://11479676

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157094 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2012-05-19 01:36:37 +00:00
parent 75f89b54b5
commit 791e629dee
4 changed files with 56 additions and 11 deletions
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4
include/llvm/Analysis/DIBuilder.h
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@ -127,8 +127,8 @@ namespace llvm {
StringRef Name = StringRef());
/// createReferenceType - Create debugging information entry for a c++
/// style reference.
DIType createReferenceType(DIType RTy);
/// style reference or rvalue reference type.
DIType createReferenceType(unsigned Tag, DIType RTy);
/// createTypedef - Create debugging information entry for a typedef.
/// @param Ty Original type.

7
lib/Analysis/DIBuilder.cpp
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@ -229,12 +229,13 @@ DIType DIBuilder::createPointerType(DIType PointeeTy, uint64_t SizeInBits,
return DIType(MDNode::get(VMContext, Elts));
}
/// createReferenceType - Create debugging information entry for a reference.
DIType DIBuilder::createReferenceType(DIType RTy) {
/// createReferenceType - Create debugging information entry for a reference
/// type.
DIType DIBuilder::createReferenceType(unsigned Tag, DIType RTy) {
assert(RTy.Verify() && "Unable to create reference type");
// References are encoded in DIDerivedType format.
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_reference_type),
GetTagConstant(VMContext, Tag),
NULL, // TheCU,
NULL, // Name
NULL, // Filename

16
lib/Analysis/DebugInfo.cpp
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@ -150,6 +150,7 @@ bool DIDescriptor::isDerivedType() const {
case dwarf::DW_TAG_typedef:
case dwarf::DW_TAG_pointer_type:
case dwarf::DW_TAG_reference_type:
case dwarf::DW_TAG_rvalue_reference_type:
case dwarf::DW_TAG_const_type:
case dwarf::DW_TAG_volatile_type:
case dwarf::DW_TAG_restrict_type:
@ -399,11 +400,13 @@ bool DIType::Verify() const {
unsigned Tag = getTag();
if (!isBasicType() && Tag != dwarf::DW_TAG_const_type &&
Tag != dwarf::DW_TAG_volatile_type && Tag != dwarf::DW_TAG_pointer_type &&
Tag != dwarf::DW_TAG_reference_type && Tag != dwarf::DW_TAG_restrict_type
&& Tag != dwarf::DW_TAG_vector_type && Tag != dwarf::DW_TAG_array_type
&& Tag != dwarf::DW_TAG_enumeration_type
&& Tag != dwarf::DW_TAG_subroutine_type
&& getFilename().empty())
Tag != dwarf::DW_TAG_reference_type &&
Tag != dwarf::DW_TAG_rvalue_reference_type &&
Tag != dwarf::DW_TAG_restrict_type && Tag != dwarf::DW_TAG_vector_type &&
Tag != dwarf::DW_TAG_array_type &&
Tag != dwarf::DW_TAG_enumeration_type &&
Tag != dwarf::DW_TAG_subroutine_type &&
getFilename().empty())
return false;
return true;
}
@ -512,7 +515,8 @@ uint64_t DIDerivedType::getOriginalTypeSize() const {
// it's a reference then it's just the size of the field. Pointer types
// have no need of this since they're a different type of qualification
// on the type.
if (BaseType.getTag() == dwarf::DW_TAG_reference_type)
if (BaseType.getTag() == dwarf::DW_TAG_reference_type ||
BaseType.getTag() == dwarf::DW_TAG_rvalue_reference_type)
return getSizeInBits();
else if (BaseType.isDerivedType())
return DIDerivedType(BaseType).getOriginalTypeSize();

40
test/DebugInfo/X86/rvalue-ref.ll Normal file
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@ -0,0 +1,40 @@
; RUN: llc -mtriple=x86_64-apple-darwin %s -o %t -filetype=obj -O0
; RUN: llvm-dwarfdump %t | FileCheck %s
; CHECK: DW_TAG_rvalue_reference_type
@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
define void @_Z3fooOi(i32* %i) uwtable ssp {
entry:
%i.addr = alloca i32*, align 8
store i32* %i, i32** %i.addr, align 8
call void @llvm.dbg.declare(metadata !{i32** %i.addr}, metadata !11), !dbg !12
%0 = load i32** %i.addr, align 8, !dbg !13
%1 = load i32* %0, align 4, !dbg !13
%call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([4 x i8]* @.str, i32 0, i32 0), i32 %1), !dbg !13
ret void, !dbg !15
}
declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
declare i32 @printf(i8*, ...)
!llvm.dbg.cu = !{!0}
!0 = metadata !{i32 786449, i32 0, i32 4, metadata !"foo.cpp", metadata !"/Users/echristo/tmp", metadata !"clang version 3.2 (trunk 157054) (llvm/trunk 157060)", i1 true, i1 false, metadata !"", i32 0, metadata !1, metadata !1, metadata !3, metadata !1} ; [ DW_TAG_compile_unit ]
!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 !"foo", metadata !"foo", metadata !"_Z3fooOi", metadata !6, i32 4, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (i32*)* @_Z3fooOi, null, null, metadata !1, i32 5} ; [ DW_TAG_subprogram ]
!6 = metadata !{i32 786473, metadata !"foo.cpp", metadata !"/Users/echristo/tmp", 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 ]
!8 = metadata !{null, metadata !9}
!9 = metadata !{i32 786498, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !10} ; [ DW_TAG_rvalue_reference_type ]
!10 = metadata !{i32 786468, null, metadata !"int", null, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!11 = metadata !{i32 786689, metadata !5, metadata !"i", metadata !6, i32 16777220, metadata !9, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
!12 = metadata !{i32 4, i32 17, metadata !5, null}
!13 = metadata !{i32 6, i32 3, metadata !14, null}
!14 = metadata !{i32 786443, metadata !5, i32 5, i32 1, metadata !6, i32 0} ; [ DW_TAG_lexical_block ]
!15 = metadata !{i32 7, i32 1, metadata !14, null}