[clang] [clang][CodeGen] Emit atomic IR in place of optimized libcalls. (PR #73176)

[James Y Knight via cfe-commits]

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@@ -1,120 +1,147 @@
-// RUN: %clang_cc1 < %s -triple armv5e-none-linux-gnueabi -emit-llvm -O1 | FileCheck %s
-
-// FIXME: This file should not be checking -O1 output.
-// Ie, it is testing many IR optimizer passes as part of front-end verification.
+// RUN: %clang_cc1 < %s -triple armv5e-none-linux-gnueabi -emit-llvm | FileCheck %s
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jyknight wrote:

Maybe the checks in this file should be generated with llvm/utils/update_cc_test_checks.py?

https://github.com/llvm/llvm-project/pull/73176