SwiftCompilerSources: add Value.isValidGlobalInitValue and FullApplySite.isSemanticCall

`Value.isValidGlobalInitValue` was privately used by the ObjectOutliner. Make it a generally usable utility.

Author: eeckstein

SwiftCompilerSources/Sources/Optimizer/FunctionPasses/ObjectOutliner.swift

@@ -394,27 +394,6 @@ private extension InstructionWorklist {
   }
 }
 
-private extension Value {
-  /// Returns true if this value is a valid in a static initializer, including all its operands.
-  var isValidGlobalInitValue: Bool {
-    guard let svi = self as? SingleValueInstruction else {
-      return false
-    }
-    if let beginAccess = svi as? BeginAccessInst {
-      return beginAccess.address.isValidGlobalInitValue
-    }
-    if !svi.isValidInStaticInitializerOfGlobal {
-      return false
-    }
-    for op in svi.operands {
-      if !op.value.isValidGlobalInitValue {
-        return false
-      }
-    }
-    return true
-  }
-}
-
 private extension AllocRefInstBase {
   var fieldsKnownStatically: Bool {
     if let allocDynamic = self as? AllocRefDynamicInst,

SwiftCompilerSources/Sources/Optimizer/Utilities/OptUtils.swift

@@ -131,6 +131,37 @@ extension Value {
     }
     return builder.createCopyValue(operand: self)
   }
+
+  /// True if this value is a valid in a static initializer, including all its operands.
+  var isValidGlobalInitValue: Bool {
+    guard let svi = self as? SingleValueInstruction else {
+      return false
+    }
+    if let beginAccess = svi as? BeginAccessInst {
+      return beginAccess.address.isValidGlobalInitValue
+    }
+    if !svi.isValidInStaticInitializerOfGlobal {
+      return false
+    }
+    for op in svi.operands {
+      if !op.value.isValidGlobalInitValue {
+        return false
+      }
+    }
+    return true
+  }
+}
+
+extension FullApplySite {
+  func isSemanticCall(_ name: StaticString, withArgumentCount: Int) -> Bool {
+    if arguments.count == withArgumentCount,
+       let callee = referencedFunction,
+       callee.hasSemanticsAttribute(name)
+    {
+      return true
+    }
+    return false
+  }
 }
 
 extension Builder {