[test][compiler-rt] Mark several tests as UNSUPPORTED on LoongArch (#69699)

Author: Ami-zhang

compiler-rt/test/fuzzer/exit_on_src_pos.test

@@ -6,6 +6,8 @@
 
 # Test does not complete on Armv7 Thumb build bot
 UNSUPPORTED: target=thumb{{.*}}
+# Timeout on loongarch64 machine
+UNSUPPORTED: target=loongarch64{{.*}}
 
 RUN: %cpp_compiler -O0 %S/SimpleTest.cpp -o %t-SimpleTest.exe -mllvm -use-unknown-locations=Disable
 RUN: %cpp_compiler -O0 %S/ShrinkControlFlowTest.cpp -o %t-ShrinkControlFlowTest.exe

compiler-rt/test/sanitizer_common/TestCases/Linux/odd_stack_size.cpp

@@ -5,6 +5,8 @@
 // AddressSanitizer: CHECK failed: asan_thread.cpp:315 "((AddrIsInStack((uptr)&local))) != (0)"
 // https://lab.llvm.org/buildbot/#/builders/18/builds/8162
 // UNSUPPORTED: target=powerpc64{{.*}}
+/// Occasionally fail on loongarch64 machine
+// UNSUPPORTED: target=loongarch64{{.*}}
 
 #include <assert.h>
 #include <stdlib.h>

compiler-rt/test/sanitizer_common/TestCases/Linux/release_to_os_test.cpp

@@ -3,7 +3,7 @@
 
 // Temporarily disable test
 // UNSUPPORTED: tsan
-// UNSUPPORTED: target=powerpc64{{.*}}
+// UNSUPPORTED: target={{(powerpc64|loongarch64).*}}
 
 // Not needed, no allocator.
 // UNSUPPORTED: ubsan

compiler-rt/test/xray/TestCases/Posix/fdr-mode.cpp

@@ -19,6 +19,8 @@
 // RUN: rm fdr-logging-test-*
 // RUN: rm fdr-unwrite-test-*
 // UNSUPPORTED: target=powerpc64le-{{.*}}
+/// TODO: FDR logging arg1 handler(__xray_ArgLoggerEntry) hasn't implemented yet on LoongArch
+// UNSUPPORTED: target=loongarch64{{.*}}
 // REQUIRES: built-in-llvm-tree
 
 #include "xray/xray_log_interface.h"