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Lift Requirement and Parameter Accessors up to GenericSignature

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Start treating the null {Can}GenericSignature as a regular signature
with no requirements and no parameters. This not only makes for a much
safer abstraction, but allows us to simplify a lot of the clients of
GenericSignature that would previously have to check for null before
using the abstraction.
This commit is contained in:
Robert Widmann
2021-07-14 19:05:28 -07:00
parent 9a1d18ae4f
commit d86551de67
61 changed files with 283 additions and 247 deletions
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4
lib/SILOptimizer/FunctionSignatureTransforms/ExistentialTransform.cpp
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@@ -292,7 +292,7 @@ void ExistentialTransform::convertExistentialArgTypesToGenericArgTypes(
/// Determine the existing generic parameter depth.
int Depth = 0;
if (OrigGenericSig != nullptr) {
Depth = OrigGenericSig->getGenericParams().back()->getDepth() + 1;
Depth = OrigGenericSig.getGenericParams().back()->getDepth() + 1;
}
/// Index of the Generic Parameter.
@@ -526,7 +526,7 @@ void ExistentialTransform::populateThunkBody() {
unsigned int OrigDepth = 0;
if (F->getLoweredFunctionType()->isPolymorphic()) {
OrigDepth = OrigCalleeGenericSig->getGenericParams().back()->getDepth() + 1;
OrigDepth = OrigCalleeGenericSig.getGenericParams().back()->getDepth() + 1;
}
SubstitutionMap OrigSubMap = F->getForwardingSubstitutionMap();