[clang] [OpenMP][Clang] Parsing support for num_teams lower bound (PR #180608)

[via cfe-commits]

================
@@ -5080,6 +5080,56 @@ bool Parser::ParseOpenMPVarList(OpenMPDirectiveKind DKind,
           Diag(Tok, diag::err_modifier_expected_colon) << "fallback";
       }
     }
+  } // Handle num_teams clause with optional lower-bound:upper-bound syntax
+  if (Kind == OMPC_num_teams && !Tok.is(tok::r_paren) &&
+      !Tok.is(tok::annot_pragma_openmp_end)) {
+    // Look ahead to detect top-level colon
+    TentativeParsingAction TPA(*this);
----------------
ykhatav wrote:

Okay let me re write without using the look ahead logic

https://github.com/llvm/llvm-project/pull/180608