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Do not crash when .ll printing metadata that smells like debug info, but isn't.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92268 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-12-29 21:17:33 +00:00
parent 480decf1a2
commit 837eda93ee
3 changed files with 33 additions and 49 deletions
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69
lib/Support/Dwarf.cpp
View File

@ -12,8 +12,6 @@
//===----------------------------------------------------------------------===//
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/ErrorHandling.h"
#include <cassert>
using namespace llvm;
using namespace dwarf;
@ -81,19 +79,17 @@ const char *llvm::dwarf::TagString(unsigned Tag) {
case DW_TAG_lo_user: return "DW_TAG_lo_user";
case DW_TAG_hi_user: return "DW_TAG_hi_user";
}
llvm_unreachable("Unknown Dwarf Tag");
return "";
return 0;
}
/// ChildrenString - Return the string for the specified children flag.
///
const char *llvm::dwarf::ChildrenString(unsigned Children) {
switch (Children) {
case DW_CHILDREN_no: return "CHILDREN_no";
case DW_CHILDREN_yes: return "CHILDREN_yes";
case DW_CHILDREN_no: return "CHILDREN_no";
case DW_CHILDREN_yes: return "CHILDREN_yes";
}
llvm_unreachable("Unknown Dwarf ChildrenFlag");
return "";
return 0;
}
/// AttributeString - Return the string for the specified attribute.
@ -203,8 +199,7 @@ const char *llvm::dwarf::AttributeString(unsigned Attribute) {
case DW_AT_APPLE_major_runtime_vers: return "DW_AT_APPLE_major_runtime_vers";
case DW_AT_APPLE_runtime_class: return "DW_AT_APPLE_runtime_class";
}
llvm_unreachable("Unknown Dwarf Attribute");
return "";
return 0;
}
/// FormEncodingString - Return the string for the specified form encoding.
@ -233,8 +228,7 @@ const char *llvm::dwarf::FormEncodingString(unsigned Encoding) {
case DW_FORM_ref_udata: return "FORM_ref_udata";
case DW_FORM_indirect: return "FORM_indirect";
}
llvm_unreachable("Unknown Dwarf Form Encoding");
return "";
return 0;
}
/// OperationEncodingString - Return the string for the specified operation
@ -308,8 +302,7 @@ const char *llvm::dwarf::OperationEncodingString(unsigned Encoding) {
case DW_OP_lo_user: return "OP_lo_user";
case DW_OP_hi_user: return "OP_hi_user";
}
llvm_unreachable("Unknown Dwarf Operation Encoding");
return "";
return 0;
}
/// AttributeEncodingString - Return the string for the specified attribute
@ -334,8 +327,7 @@ const char *llvm::dwarf::AttributeEncodingString(unsigned Encoding) {
case DW_ATE_lo_user: return "ATE_lo_user";
case DW_ATE_hi_user: return "ATE_hi_user";
}
llvm_unreachable("Unknown Dwarf Attribute Encoding");
return "";
return 0;
}
/// DecimalSignString - Return the string for the specified decimal sign
@ -348,8 +340,7 @@ const char *llvm::dwarf::DecimalSignString(unsigned Sign) {
case DW_DS_leading_separate: return "DS_leading_separate";
case DW_DS_trailing_separate: return "DS_trailing_separate";
}
llvm_unreachable("Unknown Dwarf Decimal Sign Attribute");
return "";
return 0;
}
/// EndianityString - Return the string for the specified endianity.
@ -362,8 +353,7 @@ const char *llvm::dwarf::EndianityString(unsigned Endian) {
case DW_END_lo_user: return "END_lo_user";
case DW_END_hi_user: return "END_hi_user";
}
llvm_unreachable("Unknown Dwarf Endianity");
return "";
return 0;
}
/// AccessibilityString - Return the string for the specified accessibility.
@ -375,8 +365,7 @@ const char *llvm::dwarf::AccessibilityString(unsigned Access) {
case DW_ACCESS_protected: return "ACCESS_protected";
case DW_ACCESS_private: return "ACCESS_private";
}
llvm_unreachable("Unknown Dwarf Accessibility");
return "";
return 0;
}
/// VisibilityString - Return the string for the specified visibility.
@ -387,8 +376,7 @@ const char *llvm::dwarf::VisibilityString(unsigned Visibility) {
case DW_VIS_exported: return "VIS_exported";
case DW_VIS_qualified: return "VIS_qualified";
}
llvm_unreachable("Unknown Dwarf Visibility");
return "";
return 0;
}
/// VirtualityString - Return the string for the specified virtuality.
@ -399,8 +387,7 @@ const char *llvm::dwarf::VirtualityString(unsigned Virtuality) {
case DW_VIRTUALITY_virtual: return "VIRTUALITY_virtual";
case DW_VIRTUALITY_pure_virtual: return "VIRTUALITY_pure_virtual";
}
llvm_unreachable("Unknown Dwarf Virtuality");
return "";
return 0;
}
/// LanguageString - Return the string for the specified language.
@ -429,8 +416,7 @@ const char *llvm::dwarf::LanguageString(unsigned Language) {
case DW_LANG_lo_user: return "LANG_lo_user";
case DW_LANG_hi_user: return "LANG_hi_user";
}
llvm_unreachable("Unknown Dwarf Language");
return "";
return 0;
}
/// CaseString - Return the string for the specified identifier case.
@ -442,8 +428,7 @@ const char *llvm::dwarf::CaseString(unsigned Case) {
case DW_ID_down_case: return "ID_down_case";
case DW_ID_case_insensitive: return "ID_case_insensitive";
}
llvm_unreachable("Unknown Dwarf Identifier Case");
return "";
return 0;
}
/// ConventionString - Return the string for the specified calling convention.
@ -456,8 +441,7 @@ const char *llvm::dwarf::ConventionString(unsigned Convention) {
case DW_CC_lo_user: return "CC_lo_user";
case DW_CC_hi_user: return "CC_hi_user";
}
llvm_unreachable("Unknown Dwarf Calling Convention");
return "";
return 0;
}
/// InlineCodeString - Return the string for the specified inline code.
@ -469,8 +453,7 @@ const char *llvm::dwarf::InlineCodeString(unsigned Code) {
case DW_INL_declared_not_inlined: return "INL_declared_not_inlined";
case DW_INL_declared_inlined: return "INL_declared_inlined";
}
llvm_unreachable("Unknown Dwarf Inline Code");
return "";
return 0;
}
/// ArrayOrderString - Return the string for the specified array order.
@ -480,8 +463,7 @@ const char *llvm::dwarf::ArrayOrderString(unsigned Order) {
case DW_ORD_row_major: return "ORD_row_major";
case DW_ORD_col_major: return "ORD_col_major";
}
llvm_unreachable("Unknown Dwarf Array Order");
return "";
return 0;
}
/// DiscriminantString - Return the string for the specified discriminant
@ -491,8 +473,7 @@ const char *llvm::dwarf::DiscriminantString(unsigned Discriminant) {
case DW_DSC_label: return "DSC_label";
case DW_DSC_range: return "DSC_range";
}
llvm_unreachable("Unknown Dwarf Discriminant Descriptor");
return "";
return 0;
}
/// LNStandardString - Return the string for the specified line number standard.
@ -512,8 +493,7 @@ const char *llvm::dwarf::LNStandardString(unsigned Standard) {
case DW_LNS_set_epilogue_begin: return "LNS_set_epilogue_begin";
case DW_LNS_set_isa: return "LNS_set_isa";
}
llvm_unreachable("Unknown Dwarf Line Number Standard");
return "";
return 0;
}
/// LNExtendedString - Return the string for the specified line number extended
@ -527,8 +507,7 @@ const char *llvm::dwarf::LNExtendedString(unsigned Encoding) {
case DW_LNE_lo_user: return "LNE_lo_user";
case DW_LNE_hi_user: return "LNE_hi_user";
}
llvm_unreachable("Unknown Dwarf Line Number Extended Opcode Encoding");
return "";
return 0;
}
/// MacinfoString - Return the string for the specified macinfo type encodings.
@ -542,8 +521,7 @@ const char *llvm::dwarf::MacinfoString(unsigned Encoding) {
case DW_MACINFO_end_file: return "MACINFO_end_file";
case DW_MACINFO_vendor_ext: return "MACINFO_vendor_ext";
}
llvm_unreachable("Unknown Dwarf Macinfo Type Encodings");
return "";
return 0;
}
/// CallFrameString - Return the string for the specified call frame instruction
@ -578,6 +556,5 @@ const char *llvm::dwarf::CallFrameString(unsigned Encoding) {
case DW_CFA_lo_user: return "CFA_lo_user";
case DW_CFA_hi_user: return "CFA_hi_user";
}
llvm_unreachable("Unknown Dwarf Call Frame Instruction Encodings");
return "";
return 0;
}

5
lib/VMCore/AsmWriter.cpp
View File

@ -892,8 +892,8 @@ static void WriteMDNodeComment(const MDNode *Node,
Out << "; [ DW_TAG_vector_type ]";
else if (Tag == dwarf::DW_TAG_user_base)
Out << "; [ DW_TAG_user_base ]";
else
Out << "; [ " << dwarf::TagString(Tag) << " ]";
else if (const char *TagName = dwarf::TagString(Tag))
Out << "; [ " << TagName << " ]";
}
static void WriteMDNodes(formatted_raw_ostream &Out, TypePrinting &TypePrinter,
@ -1519,7 +1519,6 @@ static void PrintLinkage(GlobalValue::LinkageTypes LT,
static void PrintVisibility(GlobalValue::VisibilityTypes Vis,
formatted_raw_ostream &Out) {
switch (Vis) {
default: llvm_unreachable("Invalid visibility style!");
case GlobalValue::DefaultVisibility: break;
case GlobalValue::HiddenVisibility: Out << "hidden "; break;
case GlobalValue::ProtectedVisibility: Out << "protected "; break;

8
test/Assembler/metadata.ll Normal file
View File

@ -0,0 +1,8 @@
; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | grep {ret void, !foo !0}
define void @test() {
ret void, !foo !0
;, !bar !1
}
!0 = metadata !{i32 662302, i32 26, metadata !1, null}
!1 = metadata !{i32 4}