[clang] [CIR] Support x86 builtin rdtsc (PR #180714)

[Aditya Trivedi via cfe-commits]

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@@ -0,0 +1,46 @@
+// RUN: %clang_cc1 -x c -ffreestanding -triple x86_64-unknown-linux -fclangir -emit-cir -o %t.cir %s
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+
+// RUN: %clang_cc1 -x c -ffreestanding -triple x86_64-unknown-linux -fclangir -emit-llvm -o %t.ll %s
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t.ll %s
+
+// RUN: %clang_cc1 -x c -ffreestanding -triple=x86_64-unknown-linux -emit-llvm -o - %s | FileCheck %s -check-prefix=OGCG
+
+// This test mimics clang/test/CodeGen/X86/rd-builtins.c, which eventually
+// CIR shall be able to support fully.
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adit4443ya wrote:

Done

https://github.com/llvm/llvm-project/pull/180714