[gcc r14-308] RISC-V: Add required tls to read thread pointer test

[Kito Cheng <kito@gcc.gnu.org>]

https://gcc.gnu.org/g:e0cf929d99bebd9a740db6db45d69957514e0c12

commit r14-308-ge0cf929d99bebd9a740db6db45d69957514e0c12
Author: Pan Li <pan2.li@intel.com>
Date:   Thu Apr 27 11:31:42 2023 +0800

    RISC-V: Add required tls to read thread pointer test
    
    The read-thread-pointer test may require the gcc configured
    with --enable-tls. If no, there x4 (aka tp) register will not
    be presented in the assembly code.
    
    This patch requires the tls for the dg checking. It will perform
    the test checking if --enable-tls and mark the test as unsupported
    if --disable-tls.
    
    Configured with --enable-tls:
    === gcc Summary ===
    of expected passes            16
    
    Configured with --disable-tls:
    === gcc Summary ===
    of unsupported tests          8
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/riscv/read-thread-pointer.c: Add required tls.
    
    Signed-off-by: Pan Li <pan2.li@intel.com>

Diff:
---
 gcc/testsuite/gcc.target/riscv/read-thread-pointer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/testsuite/gcc.target/riscv/read-thread-pointer.c b/gcc/testsuite/gcc.target/riscv/read-thread-pointer.c
index 401fb421129..5f460b5f746 100644
--- a/gcc/testsuite/gcc.target/riscv/read-thread-pointer.c
+++ b/gcc/testsuite/gcc.target/riscv/read-thread-pointer.c
@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+/* { dg-require-effective-target tls_native } */
 
 void *get_tp()
 {