[clang] [CIR] Upstream simple function bodies (PR #127674)

[Andy Kaylor via cfe-commits]

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@@ -11,8 +11,8 @@
 ///
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_CLANG_CIR_DIALECT_IR_CIROPS
-#define LLVM_CLANG_CIR_DIALECT_IR_CIROPS
+#ifndef CLANG_CIR_DIALECT_IR_CIROPS_TD
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andykaylor wrote:

Why is the LLVM_ prefix being removed here?

https://github.com/llvm/llvm-project/pull/127674