[WebAssembly] Assert that byval and nest are not used for return types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254567 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
index 8f1a06d46305a9f3ac0a4e3ae5701f6b4acb2c57..2485df1ab5d20db2ab86effbf60f083fd94f4de5 100644 (file)
--- a/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
+++ b/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
@@ -353,12 +353,10 @@ SDValue WebAssemblyTargetLowering::LowerReturn(
 
   // Record the number and types of the return values.
   for (const ISD::OutputArg &Out : Outs) {
-    if (Out.Flags.isByVal())
-      fail(DL, DAG, "WebAssembly hasn't implemented byval results");
+    assert(!Out.Flags.isByVal() && "byval is not valid for return values");
+    assert(!Out.Flags.isNest() && "nest is not valid for return values");
     if (Out.Flags.isInAlloca())
       fail(DL, DAG, "WebAssembly hasn't implemented inalloca results");
-    if (Out.Flags.isNest())
-      fail(DL, DAG, "WebAssembly hasn't implemented nest results");
     if (Out.Flags.isInConsecutiveRegs())
       fail(DL, DAG, "WebAssembly hasn't implemented cons regs results");
     if (Out.Flags.isInConsecutiveRegsLast())