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Implement Regression/Assembler/2005-12-21-ZeroInitVector.ll

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24903 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2005-12-21 17:53:02 +00:00
parent 90b02b08a5
commit f1f03dfc66
2 changed files with 13 additions and 1 deletions
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8
lib/AsmParser/ParserInternals.h
View File

@@ -82,7 +82,7 @@ static inline void ThrowException(const std::string &message,
struct ValID { struct ValID {
enum { enum {
NumberVal, NameVal, ConstSIntVal, ConstUIntVal, ConstFPVal, ConstNullVal, NumberVal, NameVal, ConstSIntVal, ConstUIntVal, ConstFPVal, ConstNullVal,
ConstUndefVal, ConstantVal, ConstUndefVal, ConstZeroVal, ConstantVal,
} Type; } Type;
union { union {
@@ -122,6 +122,10 @@ struct ValID {
ValID D; D.Type = ConstUndefVal; return D; ValID D; D.Type = ConstUndefVal; return D;
} }
static ValID createZeroInit() {
ValID D; D.Type = ConstZeroVal; return D;
}
static ValID create(Constant *Val) { static ValID create(Constant *Val) {
ValID D; D.Type = ConstantVal; D.ConstantValue = Val; return D; ValID D; D.Type = ConstantVal; D.ConstantValue = Val; return D;
} }
@@ -145,6 +149,7 @@ struct ValID {
case ConstFPVal : return ftostr(ConstPoolFP); case ConstFPVal : return ftostr(ConstPoolFP);
case ConstNullVal : return "null"; case ConstNullVal : return "null";
case ConstUndefVal : return "undef"; case ConstUndefVal : return "undef";
case ConstZeroVal : return "zeroinitializer";
case ConstUIntVal : case ConstUIntVal :
case ConstSIntVal : return std::string("%") + itostr(ConstPool64); case ConstSIntVal : return std::string("%") + itostr(ConstPool64);
case ConstantVal: case ConstantVal:
@@ -168,6 +173,7 @@ struct ValID {
case ConstFPVal: return ConstPoolFP < V.ConstPoolFP; case ConstFPVal: return ConstPoolFP < V.ConstPoolFP;
case ConstNullVal: return false; case ConstNullVal: return false;
case ConstUndefVal: return false; case ConstUndefVal: return false;
case ConstZeroVal: return false;
case ConstantVal: return ConstantValue < V.ConstantValue; case ConstantVal: return ConstantValue < V.ConstantValue;
default: assert(0 && "Unknown value type!"); return false; default: assert(0 && "Unknown value type!"); return false;
} }

6
lib/AsmParser/llvmAsmParser.y
View File

@@ -303,6 +303,9 @@ static Value *getValNonImprovising(const Type *Ty, const ValID &D) {
case ValID::ConstUndefVal: // Is it an undef value? case ValID::ConstUndefVal: // Is it an undef value?
return UndefValue::get(Ty); return UndefValue::get(Ty);
case ValID::ConstZeroVal: // Is it a zero value?
return Constant::getNullValue(Ty);
case ValID::ConstantVal: // Fully resolved constant? case ValID::ConstantVal: // Fully resolved constant?
if (D.ConstantValue->getType() != Ty) if (D.ConstantValue->getType() != Ty)
ThrowException("Constant expression type different from required type!"); ThrowException("Constant expression type different from required type!");
@@ -1816,6 +1819,9 @@ ConstValueRef : ESINT64VAL { // A reference to a direct constant
| UNDEF { | UNDEF {
$$ = ValID::createUndef(); $$ = ValID::createUndef();
} }
| ZEROINITIALIZER { // A vector zero constant.
$$ = ValID::createZeroInit();
}
| '<' ConstVector '>' { // Nonempty unsized packed vector | '<' ConstVector '>' { // Nonempty unsized packed vector
const Type *ETy = (*$2)[0]->getType(); const Type *ETy = (*$2)[0]->getType();
int NumElements = $2->size(); int NumElements = $2->size();