Fix recently introduced typos.

Author: practicalswift

docs/SIL.rst

@@ -1541,7 +1541,7 @@ A value ``%1`` is said to be *value-dependent* on a value ``%0`` if:
 - ``%1`` is the result of ``mark_dependence`` and ``%0`` is either of
   the operands.
 
-- ``%1`` is the value address of an box allocation instruction of which
+- ``%1`` is the value address of a box allocation instruction of which
   ``%0`` is the box reference.
 
 - ``%1`` is the result of a ``struct``, ``tuple``, or ``enum``

include/swift/AST/DiagnosticsDriver.def

@@ -77,7 +77,7 @@ ERROR(error_unknown_target,driver,none,
       "unknown target '%0'", (StringRef))
 
 ERROR(error_framework_bridging_header,driver,none,
-      "using bridging headers with framework targets is unsupported", ())
+      "using bridging headers with framework targets is unsupported", ())
 
 ERROR(error_i_mode,driver,none,
       "the flag '-i' is no longer required and has been removed; "

include/swift/Basic/PointerIntEnum.h

@@ -68,7 +68,7 @@ struct PointerIntEnumIndexKindValue
 /// PointerIntEnum. On 64 bit we have many more bits than that.
 ///
 /// By using this representation, we can make PointerIntEnum a true value type
-/// that is trivially constructable and destructable without needing to malloc
+/// that is trivially constructible and destructible without needing to malloc
 /// memory.
 ///
 /// In order for all of this to work, the user of this needs to construct an
@@ -125,7 +125,7 @@ class PointerIntEnum {
   static constexpr unsigned NumIndexBits =
       sizeof(uintptr_t) * CHAR_BIT - IndexShiftOffset;
 
-  /// The maximum index that can be stored for a index PointerIntEnum caes.
+  /// The maximum index that can be stored for an index PointerIntEnum case.
   static constexpr uintptr_t MaxIndex = (uintptr_t(1) << NumIndexBits) - 2;
 
   /// The bit representation of an Invalid PointerIntEnum's storage.

lib/IRGen/LocalTypeData.cpp

@@ -127,7 +127,7 @@ llvm::Value *LocalTypeDataCache::tryGet(IRGenFunction &IGF, Key key) {
 
     // Make a new concrete entry at the active definition point.
 
-    // Register witih the active ConditionalDominanceScope if necessary.
+    // Register with the active ConditionalDominanceScope if necessary.
     bool isConditional = IGF.isConditionalDominancePoint();
     if (isConditional) {
       IGF.registerConditionalLocalTypeDataKey(key);