[llvm] Ensure NoTrapAfterNoreturn is false for the wasm backend (PR #65876)

[Matt Harding via llvm-commits]

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@@ -159,6 +207,9 @@ bool WebAssemblyPeephole::runOnMachineFunction(MachineFunction &MF) {
       case WebAssembly::RETURN:
         Changed |= maybeRewriteToFallthrough(MI, MBB, MF, MFI, MRI, TII);
         break;
+      case WebAssembly::UNREACHABLE:
+        Changed |= eraseDeadCodeAroundUnreachable(MI, MBB);
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majaha wrote:

You might be right. I put them together, but in different commits, because the dead code removal does essentially what I wanted NoTrapAfterNoreturn to do.

https://github.com/llvm/llvm-project/pull/65876