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[BugFix] Skip identity conversions for 8-bit and 16-bit types #3622

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merged 2 commits into from
Jun 20, 2024
Merged

[BugFix] Skip identity conversions for 8-bit and 16-bit types #3622

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929e960
[BugFix] Do not generate any conversion for 8-bit and 16-bit types if…
ravi688 Jun 16, 2024
0c42756
[No Functional Change] Added copyright message (as per CLA)
ravi688 Jun 19, 2024
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15 changes: 10 additions & 5 deletions glslang/MachineIndependent/ParseHelper.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -8540,7 +8540,8 @@ TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, T
basicOp = EOpConstructFloat16;
// 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
// so construct a 32-bit type and convert
if (!intermediate.getArithemeticFloat16Enabled()) {
// and do not generate any conversion if it is an identity conversion, i.e. float16_t(<float16_t> var)
if (!intermediate.getArithemeticFloat16Enabled() && (node->getBasicType() != EbtFloat16)) {
TType tempType(EbtFloat, EvqTemporary, type.getVectorSize());
newNode = node;
if (tempType != newNode->getType()) {
Expand All @@ -8563,7 +8564,8 @@ TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, T
basicOp = EOpConstructInt8;
// 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
// so construct a 32-bit type and convert
if (!intermediate.getArithemeticInt8Enabled()) {
// and do not generate any conversion if it is an identity conversion, i.e. int8_t(<int8_t> var)
if (!intermediate.getArithemeticInt8Enabled() && (node->getBasicType() != EbtInt8)) {
TType tempType(EbtInt, EvqTemporary, type.getVectorSize());
newNode = node;
if (tempType != newNode->getType()) {
Expand All @@ -8586,7 +8588,8 @@ TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, T
basicOp = EOpConstructUint8;
// 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
// so construct a 32-bit type and convert
if (!intermediate.getArithemeticInt8Enabled()) {
// and do not generate any conversion if it is an identity conversion, i.e. uint8_t(<uint8_t> var)
if (!intermediate.getArithemeticInt8Enabled() && (node->getBasicType() != EbtUint8)) {
TType tempType(EbtUint, EvqTemporary, type.getVectorSize());
newNode = node;
if (tempType != newNode->getType()) {
Expand All @@ -8609,7 +8612,8 @@ TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, T
basicOp = EOpConstructInt16;
// 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
// so construct a 32-bit type and convert
if (!intermediate.getArithemeticInt16Enabled()) {
// and do not generate any conversion if it is an identity conversion, i.e. int16_t(<int16_t> var)
if (!intermediate.getArithemeticInt16Enabled() && (node->getBasicType() != EbtInt16)) {
TType tempType(EbtInt, EvqTemporary, type.getVectorSize());
newNode = node;
if (tempType != newNode->getType()) {
Expand All @@ -8632,7 +8636,8 @@ TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, T
basicOp = EOpConstructUint16;
// 8/16-bit storage extensions don't support constructing composites of 8/16-bit types,
// so construct a 32-bit type and convert
if (!intermediate.getArithemeticInt16Enabled()) {
// and do not generate any conversion if it is an identity conversion, i.e. uint16_t(<uint16_t> var)
if (!intermediate.getArithemeticInt16Enabled() && (node->getBasicType() != EbtUint16)) {
TType tempType(EbtUint, EvqTemporary, type.getVectorSize());
newNode = node;
if (tempType != newNode->getType()) {
Expand Down