libswift: add UseList.isSingleUse property

eeckstein · eeckstein · commit edf0ba0b6b04 · 2021-08-23T10:21:12.000+02:00
diff --git a/libswift/Sources/SIL/Operand.swift b/libswift/Sources/SIL/Operand.swift
@@ -99,6 +99,13 @@ public struct UseList : Sequence, CustomReflectable {
     self.firstOpPtr = firstOpPtr.op
   }
 
+  public var isSingleUse: Bool {
+    if let opPtr = firstOpPtr {
+      return Operand_nextUse(BridgedOperand(op: opPtr)).op == nil
+    }
+    return false
+  }
+
   public func makeIterator() -> Iterator {
     return Iterator(currentOpPtr: firstOpPtr)
   }

Original file line number	Diff line number	Diff line change
`@@ -99,6 +99,13 @@ public struct UseList : Sequence, CustomReflectable {`
`99`	`99`	`self.firstOpPtr = firstOpPtr.op`
`100`	`100`	`}`
`101`	`101`
	`102`	`+ public var isSingleUse: Bool {`
	`103`	`+ if let opPtr = firstOpPtr {`
	`104`	`+ return Operand_nextUse(BridgedOperand(op: opPtr)).op == nil`
	`105`	`+ }`
	`106`	`+ return false`
	`107`	`+ }`
	`108`	`+`
`102`	`109`	`public func makeIterator() -> Iterator {`
`103`	`110`	`return Iterator(currentOpPtr: firstOpPtr)`
`104`	`111`	`}`