[Test] Use -disable-llvm-merge-function-pass to unblock MergeFunc fix.

To unblock CI for swiftlang/llvm-project#10112.

Author: fhahn

test/Interop/Cxx/class/copy-move-assignment-irgen.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -I %S/Inputs -enable-experimental-cxx-interop -emit-ir %s -Xcc -fignore-exceptions -O | %FileCheck %s
+// RUN: %target-swift-frontend -I %S/Inputs -disable-llvm-merge-functions-pass -enable-experimental-cxx-interop -emit-ir %s -Xcc -fignore-exceptions -O | %FileCheck %s
 
 import CopyMoveAssignment
 
@@ -20,7 +20,7 @@ public func copyAssign() {
 // CHECK: call {{void|ptr}} @{{_ZN31NonTrivialCopyAndCopyMoveAssignC1Ev|_ZN31NonTrivialCopyAndCopyMoveAssignC2Ev|"\?\?0NonTrivialCopyAndCopyMoveAssign@@QEAA@XZ"}}(ptr %[[COPY_INSTANCE:.*]])
 // CHECK: call {{void|ptr}} @{{_ZN31NonTrivialCopyAndCopyMoveAssignC1Ev|_ZN31NonTrivialCopyAndCopyMoveAssignC2Ev|"\?\?0NonTrivialCopyAndCopyMoveAssign@@QEAA@XZ"}}(ptr %[[COPY_INSTANCE2:.*]])
 // CHECK: call {{void|ptr}} @{{_ZN31NonTrivialCopyAndCopyMoveAssignD1Ev|_ZN31NonTrivialCopyAndCopyMoveAssignD2Ev|"\?\?1NonTrivialCopyAndCopyMoveAssign@@QEAA@XZ"}}(ptr %[[COPY_INSTANCE]])
-// CHECK: call {{void|(noundef )?ptr}} @{{_ZN31NonTrivialCopyAndCopyMoveAssignC1EOS_|_ZN31NonTrivialCopyAndCopyMoveAssignC2EOS_|_ZN31NonTrivialCopyAndCopyMoveAssignC1ERKS_Tm|_ZN31NonTrivialCopyAndCopyMoveAssignC2ERKS_Tm|"\?\?0NonTrivialCopyAndCopyMoveAssign@@QEAA@AEBU0@@Z"}}(
+// CHECK: call {{void|(noundef )?ptr}} @{{_ZN31NonTrivialCopyAndCopyMoveAssignC1ERKS_|_ZN31NonTrivialCopyAndCopyMoveAssignC2EOS_|_ZN31NonTrivialCopyAndCopyMoveAssignC1ERKS|_ZN31NonTrivialCopyAndCopyMoveAssignC2ERKS_|"\?\?0NonTrivialCopyAndCopyMoveAssign@@QEAA@AEBU0@@Z"}}(
 // CHECK-SAME: %[[COPY_INSTANCE]],
 // CHECK-SAME: ptr
 // CHECK-SAME: %[[COPY_INSTANCE2]])