Drop the Diagnose parameter from Sema::PerformImplicitConversion again and instead use TryImplicitConversion in CheckSingleAssignmentConstraints when that function is in no-diagnostics mode.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142143 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed