llvm-project/clang/test/PCH/designated-init.c

// Test this without pch.
// RUN: %clang_cc1 %s -include %s.h -emit-llvm -o %t.withoutpch.ll

// Test with pch.
// RUN: %clang_cc1 %s.h -emit-pch -o %t.pch
// RUN: %clang_cc1 %s -include-pch %t.pch -emit-llvm -o %t.withpch.ll
// RUN: diff %t.withoutpch.ll %t.withpch.ll
[PCH] When serializing Stmts, keep track of when sub statements are referenced again and in such a case just write out a reference of a previously serialized Stmt, instead of serializing it all over again. This saves memory + space + [de]serializing time, and avoids blowing up memory with pathological cases. rdar://10293911 llvm-svn: 142696 2011-10-22 07:02:28 +08:00			`// Test this without pch.`
			`// RUN: %clang_cc1 %s -include %s.h -emit-llvm -o %t.withoutpch.ll`

			`// Test with pch.`
			`// RUN: %clang_cc1 %s.h -emit-pch -o %t.pch`
			`// RUN: %clang_cc1 %s -include-pch %t.pch -emit-llvm -o %t.withpch.ll`
			`// RUN: diff %t.withoutpch.ll %t.withpch.ll`