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

[Sam Clegg 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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sbc100 wrote:

Maybe this dead code removal change seems substantial enough as to warrant landing (and testing) separately?

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