[clang] Remove optimization flags from clang codegen tests (PR #113714)

[Simon Pilgrim via cfe-commits]

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@@ -1,7 +1,7 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
 // REQUIRES: x86-registered-target
-// RUN: %clang_cc1 -ffreestanding %s -O3 -triple=x86_64-apple-darwin -target-feature +avx -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,X64
-// RUN: %clang_cc1 -ffreestanding %s -O3 -triple=i386-apple-darwin -target-feature +avx -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,X86
-// FIXME: This is testing optimized generation of shuffle instructions and should be fixed.
+// RUN: %clang_cc1 -ffreestanding %s -triple=x86_64-- -target-feature +avx -disable-O0-optnone -emit-llvm -o - | opt -S -passes=mem2reg | FileCheck %s --check-prefixes=CHECK
+// RUN: %clang_cc1 -ffreestanding %s -triple=i386-- -target-feature +avx -disable-O0-optnone -emit-llvm -o - | opt -S -passes=mem2reg | FileCheck %s --check-prefixes=CHECK
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RKSimon wrote:

Remove superfluous `--check-prefixes=CHECK`

https://github.com/llvm/llvm-project/pull/113714