[clang] [llvm] [X86][AsmParser] Fix compiler crash on division by zero in MS inline asm (PR #213539)

[Phoebe Wang via llvm-commits]

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@@ -890,6 +890,29 @@ class X86AsmParser : public MCTargetAsmParser {
       default:
         State = IES_ERROR;
         break;
+      case IES_DIVIDE:
+      case IES_MOD: {
+        auto HasError = [&ErrMsg](IntelExprState IES, int64_t TmpInt) {
+          if (TmpInt != 0)
+            return false;
+          switch (IES) {
+          case IES_DIVIDE:
+            ErrMsg = "division by zero in assembly expression";
+            break;
+          case IES_MOD:
+            ErrMsg = "modulo by zero in assembly expression";
+            break;
+          default:
+            llvm_unreachable("unreachable");
+          }
+          return true;
+        };
+        if (HasError(State, TmpInt)) {
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phoebewang wrote:

Unnecessary lamba

https://github.com/llvm/llvm-project/pull/213539