[PATCH] D15755: TableGen: Add IsOptional field to AsmOperandClass

[Matt Arsenault via llvm-commits]

arsenm added a subscriber: arsenm.

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Comment at: include/llvm/Target/Target.td:608-611
@@ -607,2 +607,6 @@
   string DiagnosticType = "";
+
+  /// Set to 1 if this operand is optional and not always required.  Optional
+  /// operands must be at the end of the operand list.
+  bit IsOptional = 0;
 }
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This comment should have more detail. Is this just talking about the assembler? What default value is used?


http://reviews.llvm.org/D15755