[clang] [CIR] Implement switch case simplify (PR #140649)

[via cfe-commits]

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@@ -186,7 +288,7 @@ void CIRSimplifyPass::runOnOperation() {
   // Collect operations to apply patterns.
   llvm::SmallVector<Operation *, 16> ops;
   getOperation()->walk([&](Operation *op) {
-    if (isa<TernaryOp, SelectOp>(op))
+    if (isa<TernaryOp, SelectOp, SwitchOp>(op))
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Andres-Salamanca wrote:

Just checked and it also fails in the incubator.

https://github.com/llvm/llvm-project/pull/140649