SILGen: Fix verifier error when forming keypath to subscript with resilient index type #79310
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…ilient index type emitKeyPathSubscriptOperands() uses the ArgEmitter to collect index arguments, which uses ResilienceExpansion::Minimal when lowering parameter types. For this reason, lowerKeyPathSubscriptIndexTypes() should also use ResilienceExpansion::Minimal when lowering parameter types. Otherwise, we crash in the SIL verifier due to a loadable vs address-only mismatch, if the index type is resilient. Fixes rdar://problem/144654366. Fixes swiftlang#79304.
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emitKeyPathSubscriptOperands() uses the ArgEmitter to collect index arguments, which uses ResilienceExpansion::Minimal when lowering parameter types.
For this reason, lowerKeyPathSubscriptIndexTypes() should also use ResilienceExpansion::Minimal when lowering parameter types.
Otherwise, we crash in the SIL verifier due to a loadable vs address-only mismatch, if the index type is resilient.
Fixes rdar://problem/144654366.
Fixes #79304.