[llvm] [clang] Enable OpenCL hostcall printf (WIP) (PR #72556)

[Sameer Sahasrabuddhe via cfe-commits]

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@@ -1,12 +1,68 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
-// RUN: %clang_cc1 -cl-std=CL1.2 -triple amdgcn-amd-amdhsa -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -cl-std=CL1.2 -triple amdgcn-amd-amdhsa -mprintf-kind=buffered -disable-llvm-passes -emit-llvm -o - %s | FileCheck --check-prefix=CHECK_BUFFERED %s
+// RUN: %clang_cc1 -cl-std=CL1.2 -triple amdgcn-amd-amdhsa -mprintf-kind=hostcall -disable-llvm-passes -emit-llvm -o - %s | FileCheck --check-prefix=CHECK_HOSTCALL %s
 
 int printf(__constant const char* st, ...) __attribute__((format(printf, 1, 2)));
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ssahasra wrote:

There should be tests that use the "v" modifier inside a format specifier such as "%v2d" and also tests that use outside it, such as "%dv".

https://github.com/llvm/llvm-project/pull/72556