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fix PR3281:accepted0[02].ll: represent empty arrays distinctly, and

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diagnose attempts to initialize non-empty arrays with them.  This 
produces:
llvm-as: accepted02.ll:1:28: invalid empty array initializer
@"o" = global [5 x double] []
                           ^
llvm-as: accepted00.ll:1:32: invalid empty array initializer
@"za" = thread_local global {} []
                               ^
[


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61676 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-01-05 07:52:51 +00:00
parent 3fbb3ab14d
commit 081b505f77
1 changed files with 7 additions and 1 deletions
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8
lib/AsmParser/LLParser.cpp
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@ -36,6 +36,7 @@ namespace llvm {
t_LocalName, t_GlobalName, // Name in StrVal. t_LocalName, t_GlobalName, // Name in StrVal.
t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal. t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal.
t_Null, t_Undef, t_Zero, // No value. t_Null, t_Undef, t_Zero, // No value.
t_EmptyArray, // No value: []
t_Constant, // Value in ConstantVal. t_Constant, // Value in ConstantVal.
t_InlineAsm // Value in StrVal/StrVal2/UIntVal. t_InlineAsm // Value in StrVal/StrVal2/UIntVal.
} Kind; } Kind;
@ -1578,7 +1579,7 @@ bool LLParser::ParseValID(ValID &ID) {
if (Elts.empty()) { if (Elts.empty()) {
// Use undef instead of an array because it's inconvenient to determine // Use undef instead of an array because it's inconvenient to determine
// the element type at this point, there being no elements to examine. // the element type at this point, there being no elements to examine.
ID.Kind = ValID::t_Undef; ID.Kind = ValID::t_EmptyArray;
return false; return false;
} }
@ -1904,6 +1905,11 @@ bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
case ValID::t_Undef: case ValID::t_Undef:
V = UndefValue::get(Ty); V = UndefValue::get(Ty);
return false; return false;
case ValID::t_EmptyArray:
if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
return Error(ID.Loc, "invalid empty array initializer");
V = UndefValue::get(Ty);
return false;
case ValID::t_Zero: case ValID::t_Zero:
if (!Ty->isFirstClassType()) if (!Ty->isFirstClassType())
return Error(ID.Loc, "invalid type for null constant"); return Error(ID.Loc, "invalid type for null constant");