[WebAssembly] Add except_ref as a first-class type

Summary: Add except_ref as a first-class type, according to the [[https://github.com/WebAssembly/exception-handling/blob/master/proposals/Level-1.md | Level 1 exception handling proposal ]].

Reviewers: dschuff

Subscribers: jfb, sbc100, llvm-commits

Differential Revision: https://reviews.llvm.org/D43706

llvm-svn: 326985

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp
index e2edb924d4d..e6229b989b5 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp
@@ -86,6 +86,8 @@ static unsigned getDropOpcode(const TargetRegisterClass *RC) {
     return WebAssembly::DROP_F64;
   if (RC == &WebAssembly::V128RegClass)
     return WebAssembly::DROP_V128;
+  if (RC == &WebAssembly::EXCEPT_REFRegClass)
+    return WebAssembly::DROP_EXCEPT_REF;
   llvm_unreachable("Unexpected register class");
 }
 
@@ -101,6 +103,8 @@ static unsigned getGetLocalOpcode(const TargetRegisterClass *RC) {
     return WebAssembly::GET_LOCAL_F64;
   if (RC == &WebAssembly::V128RegClass)
     return WebAssembly::GET_LOCAL_V128;
+  if (RC == &WebAssembly::EXCEPT_REFRegClass)
+    return WebAssembly::GET_LOCAL_EXCEPT_REF;
   llvm_unreachable("Unexpected register class");
 }
 
@@ -116,6 +120,8 @@ static unsigned getSetLocalOpcode(const TargetRegisterClass *RC) {
     return WebAssembly::SET_LOCAL_F64;
   if (RC == &WebAssembly::V128RegClass)
     return WebAssembly::SET_LOCAL_V128;
+  if (RC == &WebAssembly::EXCEPT_REFRegClass)
+    return WebAssembly::SET_LOCAL_EXCEPT_REF;
   llvm_unreachable("Unexpected register class");
 }
 
@@ -131,6 +137,8 @@ static unsigned getTeeLocalOpcode(const TargetRegisterClass *RC) {
     return WebAssembly::TEE_LOCAL_F64;
   if (RC == &WebAssembly::V128RegClass)
     return WebAssembly::TEE_LOCAL_V128;
+  if (RC == &WebAssembly::EXCEPT_REFRegClass)
+    return WebAssembly::TEE_LOCAL_EXCEPT_REF;
   llvm_unreachable("Unexpected register class");
 }
 
@@ -144,6 +152,8 @@ static MVT typeForRegClass(const TargetRegisterClass *RC) {
     return MVT::f32;
   if (RC == &WebAssembly::F64RegClass)
     return MVT::f64;
+  if (RC == &WebAssembly::EXCEPT_REFRegClass)
+    return MVT::ExceptRef;
   llvm_unreachable("unrecognized register class");
 }