[PATCH] D14515: [WebAssembly] Support 'unreachable' expression

[Dan Gohman via llvm-commits]

sunfish added inline comments.

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Comment at: lib/Target/WebAssembly/WebAssemblyInstrControl.td:63
@@ -62,2 +62,3 @@
   def RETURN_VOID : I<(outs), (ins), [(WebAssemblyreturn)], "return">;
+  def UNREACHABLE : I<(outs), (ins), [(trap)], "unreachable">;
 } // isReturn = 1, isTerminator = 1, hasCtrlDep = 1, isBarrier = 1
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Trap-like instructions are not considered "Return" instructions in the LLVM CodeGen sense, so we should rearrange the settings here so that UNREACHABLE is outside the isReturn = 1 block.


http://reviews.llvm.org/D14515