[clang] [CIR] Upstream support for emitting ignored statements (PR #130869)

[Bruno Cardoso Lopes via cfe-commits]

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@@ -1,7 +1,9 @@
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -Wno-unused-value -fclangir -emit-cir %s -o %t.cir
 // RUN: FileCheck --input-file=%t.cir %s -check-prefix=CIR
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -Wno-unused-value -fclangir -emit-llvm %s -o %t.ll
-// RUN: FileCheck --input-file=%t.ll %s -check-prefix=LLVM
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -Wno-unused-value -fclangir -emit-llvm %s -o %t-cir.ll
+// RUN: FileCheck --input-file=%t-cir.ll %s -check-prefix=LLVM
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bcardosolopes wrote:

The reason we've been doing that is solely making our lives as developers more efficient. I guess YMMV but whenever I'm investigating a test failure, it's very convenient not to have to pipe the output myself in a file and open in the editor, output is already there and gets updated automatically, etc - in VSCode it's specially handy, cause you click the output file name in the terminal and voila. 

Our idea is that whenever we hit a certain maturity state we'll probably bulk change those to use pipes instead, but they are still extremely useful on a daily basis.

https://github.com/llvm/llvm-project/pull/130869