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DISubrange supports unsigned lower/upper array bounds, so let's not fake it in the end while emitting DWARF. If a FE needs to encode signed lower/upper array bounds then we need to extend DISubrange or ad DISignedSubrange.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144937 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2011-11-17 23:43:15 +00:00
parent 2e7fb2f736
commit ce35d8b5a1
3 changed files with 43 additions and 6 deletions
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8
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@@ -1154,8 +1154,8 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
void CompileUnit::constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy){
DIE *DW_Subrange = new DIE(dwarf::DW_TAG_subrange_type);
addDIEEntry(DW_Subrange, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IndexTy);
int64_t L = SR.getLo();
int64_t H = SR.getHi();
uint64_t L = SR.getLo();
uint64_t H = SR.getHi();
// The L value defines the lower bounds which is typically zero for C/C++. The
// H value is the upper bounds. Values are 64 bit. H - L + 1 is the size
@@ -1168,8 +1168,8 @@ void CompileUnit::constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy)
return;
}
if (L)
addSInt(DW_Subrange, dwarf::DW_AT_lower_bound, 0, L);
addSInt(DW_Subrange, dwarf::DW_AT_upper_bound, 0, H);
addUInt(DW_Subrange, dwarf::DW_AT_lower_bound, 0, L);
addUInt(DW_Subrange, dwarf::DW_AT_upper_bound, 0, H);
Buffer.addChild(DW_Subrange);
}