llvm-project

63ca2fd7 - [clang] Reland: separate recursive instantiation check from CodeSynthesisContext (#164177)

[clang] Reland: separate recursive instantiation check from CodeSynthesisContext (#164177) This makes pushing / popping CodeSynthesisContexts much cheaper, as it delegates to another class this functionality which is not actually needed in most cases. It also converts a bunch of these uses into just asserts. This improves compiler performance a little bit: Some diagnostics change a little bit, because we avoid printing a redundant context notes. This relands #162224 with no changes, turns out the buildbot failure was unrelated.