[WebAssembly] Rename except_ref type to exnref

Summary:
We agreed to rename `except_ref` to `exnref` for consistency with other
reference types in
https://github.com/WebAssembly/exception-handling/issues/79. This also
renames WebAssemblyInstrExceptRef.td to WebAssemblyInstrRef.td in order
to use the file for other reference types in future.

Reviewers: dschuff

Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, jfb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D64703

llvm-svn: 366145
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyInstrCall.td b/llvm/lib/Target/WebAssembly/WebAssemblyInstrCall.td
index bcff9f2..703c15d 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyInstrCall.td
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyInstrCall.td
@@ -59,7 +59,7 @@
 defm "" : CALL<i64, I64, "i64.">;
 defm "" : CALL<f32, F32, "f32.">;
 defm "" : CALL<f64, F64, "f64.">;
-defm "" : CALL<ExceptRef, EXCEPT_REF, "except_ref.", [HasExceptionHandling]>;
+defm "" : CALL<exnref, EXNREF, "exnref.", [HasExceptionHandling]>;
 defm "" : CALL<v16i8, V128, "v128.", [HasSIMD128]>;
 defm "" : CALL<v8i16, V128, "v128.", [HasSIMD128]>;
 defm "" : CALL<v4i32, V128, "v128.", [HasSIMD128]>;
@@ -139,9 +139,8 @@
           (CALL_v4f32 tglobaladdr:$callee)>, Requires<[HasSIMD128]>;
 def : Pat<(v2f64 (WebAssemblycall1 (WebAssemblywrapper tglobaladdr:$callee))),
           (CALL_v2f64 tglobaladdr:$callee)>, Requires<[HasSIMD128]>;
-def : Pat<(ExceptRef
-           (WebAssemblycall1 (WebAssemblywrapper tglobaladdr:$callee))),
-          (CALL_ExceptRef tglobaladdr:$callee)>,
+def : Pat<(exnref (WebAssemblycall1 (WebAssemblywrapper tglobaladdr:$callee))),
+          (CALL_exnref tglobaladdr:$callee)>,
       Requires<[HasExceptionHandling]>;
 def : Pat<(WebAssemblycall0 (WebAssemblywrapper tglobaladdr:$callee)),
           (CALL_VOID tglobaladdr:$callee)>;
@@ -169,9 +168,8 @@
           (CALL_v4f32 texternalsym:$callee)>, Requires<[HasSIMD128]>;
 def : Pat<(v2f64 (WebAssemblycall1 (WebAssemblywrapper texternalsym:$callee))),
           (CALL_v2f64 texternalsym:$callee)>, Requires<[HasSIMD128]>;
-def : Pat<(ExceptRef
-           (WebAssemblycall1 (WebAssemblywrapper texternalsym:$callee))),
-          (CALL_ExceptRef texternalsym:$callee)>,
+def : Pat<(exnref (WebAssemblycall1 (WebAssemblywrapper texternalsym:$callee))),
+          (CALL_exnref texternalsym:$callee)>,
       Requires<[HasExceptionHandling]>;
 def : Pat<(WebAssemblycall0 (WebAssemblywrapper texternalsym:$callee)),
           (CALL_VOID texternalsym:$callee)>;