[clang] [CIR] Upstream Exception CXXTryStmt (PR #162528)

[Andy Kaylor via cfe-commits]

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@@ -108,6 +108,13 @@ void EHScopeStack::popCleanup() {
   assert(!cir::MissingFeatures::ehCleanupBranchFixups());
 }
 
+EHCatchScope *EHScopeStack::pushCatch(unsigned numHandlers) {
+  char *buffer = allocate(EHCatchScope::getSizeForNumHandlers(numHandlers));
+  assert(!cir::MissingFeatures::innermostEHScope());
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andykaylor wrote:

You should probably implement this before going much further, but it's OK to leave it out of this PR.

https://github.com/llvm/llvm-project/pull/162528