Test go to definition of control variable and limit variable of cilk_…

…for loop

clang-tools-extra/clangd/test/cilk_for.test

@@ -0,0 +1,76 @@
+# RUN: clangd -lit-test < %s | FileCheck %s
+{"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootPath":"clangd","capabilities":{},"trace":"off","initializationOptions":{"fallbackFlags":["-fopencilk"]}}}
+---
+{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"test:///for.c","languageId":"c","version":1,"text":"void f(int nn) {\n  _Cilk_for(int ii = 99; ii < nn; ii += 1) { int jj = ii;}\n}"}}}
+---
+{"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"test:///for.c"},"position":{"line":1,"character":25}}}
+---
+{"jsonrpc":"2.0","id":2,"method":"textDocument/definition","params":{"textDocument":{"uri":"test:///for.c"},"position":{"line":1,"character":31}}}
+---
+{"jsonrpc":"2.0","id":3,"method":"textDocument/definition","params":{"textDocument":{"uri":"test:///for.c"},"position":{"line":1,"character":35}}}
+---
+{"jsonrpc":"2.0","id":4,"method":"textDocument/definition","params":{"textDocument":{"uri":"test:///for.c"},"position":{"line":1,"character":54}}}
+---
+{"jsonrpc":"2.0","id":2,"method":"shutdown"}
+---
+{"jsonrpc":"2.0","method":"exit"}
+# Find use of control variable inside loop condition.
+#      CHECK:  "id": 1,
+# CHECK-NEXT:  "jsonrpc": "2.0",
+# CHECK-NEXT:  "result": [
+# CHECK-NEXT:    {
+# CHECK-NEXT:      "range": {
+# CHECK-NEXT:        "end": {
+# CHECK-NEXT:          "character": 18,
+# CHECK-NEXT:          "line": 1
+# CHECK-NEXT:        },
+# CHECK-NEXT:        "start": {
+# CHECK-NEXT:          "character": 16,
+# CHECK-NEXT:          "line": 1
+# CHECK-NEXT:        }
+# CHECK-NEXT:      },
+# Find use of limit variable inside loop condition.
+#      CHECK:  "id": 2,
+# CHECK-NEXT:  "jsonrpc": "2.0",
+# CHECK-NEXT:  "result": [
+# CHECK-NEXT:    {
+# CHECK-NEXT:      "range": {
+# CHECK-NEXT:        "end": {
+# CHECK-NEXT:          "character": 13,
+# CHECK-NEXT:          "line": 0
+# CHECK-NEXT:        },
+# CHECK-NEXT:        "start": {
+# CHECK-NEXT:          "character": 11,
+# CHECK-NEXT:          "line": 0
+# CHECK-NEXT:        }
+# CHECK-NEXT:      },
+# Find use of control variable inside loop increment.
+#      CHECK:  "id": 3,
+# CHECK-NEXT:  "jsonrpc": "2.0",
+# CHECK-NEXT:  "result": [
+# CHECK-NEXT:    {
+# CHECK-NEXT:      "range": {
+# CHECK-NEXT:        "end": {
+# CHECK-NEXT:          "character": 18,
+# CHECK-NEXT:          "line": 1
+# CHECK-NEXT:        },
+# CHECK-NEXT:        "start": {
+# CHECK-NEXT:          "character": 16,
+# CHECK-NEXT:          "line": 1
+# CHECK-NEXT:        }
+# CHECK-NEXT:      },
+# Find use of control variable inside loop body.
+#      CHECK:  "id": 4,
+# CHECK-NEXT:  "jsonrpc": "2.0",
+# CHECK-NEXT:  "result": [
+# CHECK-NEXT:    {
+# CHECK-NEXT:      "range": {
+# CHECK-NEXT:        "end": {
+# CHECK-NEXT:          "character": 18,
+# CHECK-NEXT:          "line": 1
+# CHECK-NEXT:        },
+# CHECK-NEXT:        "start": {
+# CHECK-NEXT:          "character": 16,
+# CHECK-NEXT:          "line": 1
+# CHECK-NEXT:        }
+# CHECK-NEXT:      },