[Test] Ensourced multidef-liveness.

Moved the test next to the code it calls.

Author: nate-chandler

lib/SIL/Utils/PrunedLiveness.cpp

@@ -679,6 +679,41 @@ LiveRangeSummary MultiDefPrunedLiveness::computeSimple() {
   return summary;
 }
 
+namespace swift::test {
+// Arguments:
+// - variadic list of live-range defining values or instructions
+// Dumps:
+// - the liveness result and boundary
+//
+// Computes liveness for the specified def nodes by finding all their direct SSA
+// uses. If the def is an instruction, then all results are considered.
+static FunctionTest MultiDefLivenessTest(
+    "multidef-liveness", [](auto &function, auto &arguments, auto &test) {
+      SmallVector<SILBasicBlock *, 8> discoveredBlocks;
+      MultiDefPrunedLiveness liveness(&function, &discoveredBlocks);
+
+      llvm::outs() << "MultiDef lifetime analysis:\n";
+      while (arguments.hasUntaken()) {
+        auto argument = arguments.takeArgument();
+        if (isa<InstructionArgument>(argument)) {
+          auto *instruction = cast<InstructionArgument>(argument).getValue();
+          llvm::outs() << "  def instruction: " << instruction;
+          liveness.initializeDef(instruction);
+        } else {
+          SILValue value = cast<ValueArgument>(argument).getValue();
+          llvm::outs() << "  def value: " << value;
+          liveness.initializeDef(value);
+        }
+      }
+      liveness.computeSimple();
+      liveness.print(llvm::outs());
+
+      PrunedLivenessBoundary boundary;
+      liveness.computeBoundary(boundary);
+      boundary.print(llvm::outs());
+    });
+} // end namespace swift::test
+
 //===----------------------------------------------------------------------===//
 //                       DiagnosticPrunedLiveness
 //===----------------------------------------------------------------------===//

lib/SILOptimizer/UtilityPasses/TestRunner.cpp

@@ -230,39 +230,6 @@ static FunctionTest TestSpecificationTest(
 // MARK: OSSA Lifetime Unit Tests
 //===----------------------------------------------------------------------===//
 
-// Arguments:
-// - variadic list of live-range defining values or instructions
-// Dumps:
-// - the liveness result and boundary
-//
-// Computes liveness for the specified def nodes by finding all their direct SSA
-// uses. If the def is an instruction, then all results are considered.
-static FunctionTest MultiDefLivenessTest(
-    "multidef-liveness", [](auto &function, auto &arguments, auto &test) {
-      SmallVector<SILBasicBlock *, 8> discoveredBlocks;
-      MultiDefPrunedLiveness liveness(&function, &discoveredBlocks);
-
-      llvm::outs() << "MultiDef lifetime analysis:\n";
-      while (arguments.hasUntaken()) {
-        auto argument = arguments.takeArgument();
-        if (isa<InstructionArgument>(argument)) {
-          auto *instruction = cast<InstructionArgument>(argument).getValue();
-          llvm::outs() << "  def instruction: " << instruction;
-          liveness.initializeDef(instruction);
-        } else {
-          SILValue value = cast<ValueArgument>(argument).getValue();
-          llvm::outs() << "  def value: " << value;
-          liveness.initializeDef(value);
-        }
-      }
-      liveness.computeSimple();
-      liveness.print(llvm::outs());
-
-      PrunedLivenessBoundary boundary;
-      liveness.computeBoundary(boundary);
-      boundary.print(llvm::outs());
-    });
-
 // Arguments:
 // - the string "defs:"
 // - list of live-range defining values or instructions