diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td b/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td
index dab5161..437b07b 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyInstrControl.td
@@ -129,8 +129,8 @@
 
 // Throwing an exception: throw / rethrow
 let isTerminator = 1, hasCtrlDep = 1, isBarrier = 1 in {
-defm THROW : I<(outs), (ins event_op:$tag, variable_ops),
-               (outs), (ins event_op:$tag),
+defm THROW : I<(outs), (ins tag_op:$tag, variable_ops),
+               (outs), (ins tag_op:$tag),
                [(WebAssemblythrow (WebAssemblywrapper texternalsym:$tag))],
                "throw   \t$tag", "throw   \t$tag", 0x08>;
 defm RETHROW : NRI<(outs), (ins i32imm:$depth), [], "rethrow \t$depth", 0x09>;
@@ -149,9 +149,9 @@
 let hasCtrlDep = 1, hasSideEffects = 1 in {
 // Currently 'catch' can only extract an i32, which is sufficient for C++
 // support, but according to the spec 'catch' can extract any number of values
-// based on the event type.
-defm CATCH : I<(outs I32:$dst), (ins event_op:$tag),
-               (outs), (ins event_op:$tag),
+// based on the tag type.
+defm CATCH : I<(outs I32:$dst), (ins tag_op:$tag),
+               (outs), (ins tag_op:$tag),
                [(set I32:$dst,
                  (WebAssemblycatch (WebAssemblywrapper texternalsym:$tag)))],
                "catch   \t$dst, $tag", "catch   \t$tag", 0x07>;