[clang] [flang] [llvm] Add IR Profile-Guided Optimization (IR PGO) support to the Flang compiler (PR #136098)

[Tarun Prabhu via cfe-commits]

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@@ -13,6 +13,7 @@
 #ifndef LLVM_FRONTEND_DRIVER_CODEGENOPTIONS_H
 #define LLVM_FRONTEND_DRIVER_CODEGENOPTIONS_H
 
+#include <string>
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tarunprabhu wrote:

An empty line should separate the last include and the namespace below

https://github.com/llvm/llvm-project/pull/136098