ArrayElementValuePropagation: fix a wrong substituted function type for the generated reserveCapacity function call

Author: eeckstein

lib/SILOptimizer/Analysis/ArraySemantic.cpp

@@ -734,7 +734,8 @@ bool swift::ArraySemanticsCall::replaceByAppendingValues(
       Builder.createIntegerLiteral(Loc, BuiltinIntTy, Vals.size());
     StructInst *Capacity = Builder.createStruct(Loc,
         SILType::getPrimitiveObjectType(CanType(IntType)), {CapacityLiteral});
-    Builder.createApply(Loc, ReserveFnRef, FnTy.substGenericArgs(M, Subs),
+    Builder.createApply(Loc, ReserveFnRef,
+                        ReserveFnRef->getType().substGenericArgs(M, Subs),
                         ReserveFnTy->getAllResultsType(), Subs,
                         {Capacity, ArrRef}, false);
   }

test/SILOptimizer/array_contentof_opt.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -O -emit-sil  %s | %FileCheck %s
+// RUN: %target-swift-frontend -O -sil-verify-all -emit-sil  %s | %FileCheck %s
 // REQUIRES: swift_stdlib_no_asserts,optimized_stdlib
 
 // This is an end-to-end test of the array(contentsOf) -> array(Element) optimization