Don't use needs_live_range hook for "special" live ranges

In particular we were disgarding SILENCE live ranges in opcache,
because we decided that a MAY_BE_LONG type does not need a live
range.

Author: nikic

Zend/tests/uncaught_exception_error_supression.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Error suppression should have no impact on uncaught exceptions
+--FILE--
+<?php
+
+function abc() {
+    throw new Error('Example Exception');
+}
+
+@abc();
+
+?>
+--EXPECTF--
+Fatal error: Uncaught Error: Example Exception in %s:%d
+Stack trace:
+#0 %s(%d): abc()
+#1 {main}
+  thrown in %s on line %d

Zend/zend_opcode.c

@@ -655,6 +655,12 @@ static void emit_live_range(
 		default:
 			start++;
 			kind = ZEND_LIVE_TMPVAR;
+
+			/* Check hook to determine whether a live range is necessary,
+			 * e.g. based on type info. */
+			if (needs_live_range && !needs_live_range(op_array, orig_def_opline)) {
+				return;
+			}
 			break;
 		}
 		case ZEND_COPY_TMP:
@@ -694,11 +700,6 @@ static void emit_live_range(
 		}
 	}
 
-	/* Check hook to determine whether a live range is necessary, e.g. based on type info. */
-	if (needs_live_range && !needs_live_range(op_array, orig_def_opline)) {
-		return;
-	}
-
 	emit_live_range_raw(op_array, var_num, kind, start, end);
 }