Enable the inlining of generics by default

lib/SILOptimizer/Transforms/PerformanceInliner.cpp

@@ -30,7 +30,7 @@ llvm::cl::opt<bool> PrintShortestPathInfo(
     llvm::cl::desc("Print shortest-path information for inlining"));
 
 llvm::cl::opt<bool> EnableSILInliningOfGenerics(
-  "sil-inline-generics", llvm::cl::init(false),
+  "sil-inline-generics", llvm::cl::init(true),
   llvm::cl::desc("Enable inlining of generics"));
 
 //===----------------------------------------------------------------------===//

test/SILGen/collection_cast_crash.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -O -primary-file %s -emit-sil -o - | %FileCheck %s
+// RUN: %target-swift-frontend -O  -Xllvm -sil-inline-generics=false -primary-file %s -emit-sil -o - | %FileCheck %s
 
 // check if the compiler does not crash if a function is specialized
 // which contains a collection cast

test/SILOptimizer/devirt_covariant_return.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -Xllvm -new-mangling-for-tests -Xllvm -sil-full-demangle -O -Xllvm -disable-sil-cm-rr-cm=0  -primary-file %s -emit-sil -sil-inline-threshold 1000 -sil-verify-all | %FileCheck %s
+// RUN: %target-swift-frontend -Xllvm -new-mangling-for-tests -Xllvm -sil-full-demangle -O -Xllvm -disable-sil-cm-rr-cm=0   -Xllvm -sil-inline-generics=false -primary-file %s -emit-sil -sil-inline-threshold 1000 -sil-verify-all | %FileCheck %s
 
 // Make sure that we can dig all the way through the class hierarchy and
 // protocol conformances with covariant return types correctly. The verifier

test/SILOptimizer/devirt_protocol_method_invocations.swift

@@ -178,11 +178,13 @@ protocol MathP {
 }
 
 extension MathP {
+  @inline(never)
   func plus() -> Self {
     sum += 1
     return self
   }
 
+  @inline(never)
   func minus() {
     sum -= 1
     if sum == 0 {

test/SILOptimizer/devirt_specialized_conformance.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -O %s -emit-sil -sil-verify-all | %FileCheck %s
+// RUN: %target-swift-frontend -O -Xllvm -sil-inline-generics=false %s -emit-sil -sil-verify-all | %FileCheck %s
 
 // Make sure that we completely inline/devirtualize/substitute all the way down
 // to unknown1.

test/SILOptimizer/devirt_unbound_generic.swift

@@ -46,9 +46,10 @@ class Derived<T> : Base<T> {
 // Derived has no subclasses and it is a WMO compilation.
 // CHECK: sil hidden [noinline] @_T022devirt_unbound_generic5test2yAA7DerivedCyxGlF
 // CHECK-NOT: class_method
-// CHECK: function_ref @_T022devirt_unbound_generic7DerivedC3fooyyF
-// CHECK-NOT: class_method
+// CHECK-NOT: witness_method
+// CHECK-NOT: apply
 // CHECK: return
+// CHEC: end sil function '_T022devirt_unbound_generic5test2yAA7DerivedCyxGlF'
 @inline(never)
 func test2<T>(_ d: Derived<T>) {
    d.foo()
@@ -62,9 +63,10 @@ public func doTest2<T>(_ t:T) {
 // Derived has no subclasses and it is a WMO compilation.
 // CHECK: sil hidden [noinline] @_T022devirt_unbound_generic5test3yAA7DerivedCyxGlF
 // CHECK-NOT: class_method
-// CHECK: function_ref @_T022devirt_unbound_generic7DerivedC3booyyFZ
-// CHECK-NOT: class_method
+// CHECK-NOT: witness_method
+// CHECK-NOT: apply
 // CHECK: return
+// CHECK: end sil function '_T022devirt_unbound_generic5test3yAA7DerivedCyxGlF'
 @inline(never)
 func test3<T>(_ d: Derived<T>) {
    type(of: d).boo()

test/SILOptimizer/opened_archetype_operands_tracking.sil

@@ -18,7 +18,7 @@ extension P {
 
 public func process(s: P)
 
-sil @invokeClosure : $@convention(method) <Self where Self : P> (@owned @callee_owned () -> @error Error, @in_guaranteed Self) -> @error Error {
+sil [noinline] @invokeClosure : $@convention(method) <Self where Self : P> (@owned @callee_owned () -> @error Error, @in_guaranteed Self) -> @error Error {
 bb0(%0 : $@callee_owned () -> @error Error, %1 : $*Self):
   strong_release %0 : $@callee_owned () -> @error Error
   %5 = tuple ()

test/SILOptimizer/prespecialize.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend  %s -Onone  -emit-sil | %FileCheck %s
+// RUN: %target-swift-frontend  %s -Onone -Xllvm -sil-inline-generics=false -emit-sil | %FileCheck %s
 
 // REQUIRES: optimized_stdlib
 
@@ -11,7 +11,7 @@
 // CHECK-LABEL: sil [noinline] @_TF13prespecialize4testFTRGSaSi_4sizeSi_T_ 
 //
 // function_ref specialized Collection<A where ...>.makeIterator() -> IndexingIterator<A>
-// CHECK: function_ref @_TTSgq5SiSis10ComparablesSis11_Strideables___TFVs14CountableRangeCfT15uncheckedBoundsT5lowerx5upperx__GS_x_
+// CHECK: function_ref @_TTSgq5GVs14CountableRangeSi_GS_Si_s10Collections___TFesRxs10Collectionwx8IteratorzGVs16IndexingIteratorx_rS_12makeIteratorfT_GS1_x_
 //
 // function_ref specialized IndexingIterator.next() -> A._Element?
 // CHECK: function_ref @_TTSgq5GVs14CountableRangeSi_GS_Si_s14_IndexableBases___TFVs16IndexingIterator4nextfT_GSqwx8_Element_