[RISC-V][HWASAN] Adjust lit test support for RISC-V HWASAN feature

Reviewed by: vitalybuka

Differential Revision: https://reviews.llvm.org/D131344

Author: spacemonkeydelivers

compiler-rt/test/hwasan/TestCases/Linux/atfork.cpp

@@ -1,6 +1,6 @@
 // RUN: %clang_hwasan -O0 %s -o %t && %run %t 2>&1
 
-// REQUIRES: aarch64-target-arch || x86_64-target-arch
+// REQUIRES: aarch64-target-arch || x86_64-target-arch || riscv64-target-arch
 // REQUIRES: pointer-tagging
 
 #include <assert.h>

compiler-rt/test/hwasan/TestCases/Linux/vfork.c

@@ -1,7 +1,7 @@
 // https://github.com/google/sanitizers/issues/925
 // RUN: %clang_hwasan -O0 %s -o %t && %run %t 2>&1
 
-// REQUIRES: aarch64-target-arch || x86_64-target-arch
+// REQUIRES: aarch64-target-arch || x86_64-target-arch || riscv64-target-arch
 // REQUIRES: pointer-tagging
 
 #include <assert.h>

compiler-rt/test/hwasan/TestCases/exported-tagged-global.c

@@ -4,7 +4,10 @@
 // RUN: %run %t
 // RUN: %clang_hwasan -O1 -mllvm --aarch64-enable-global-isel-at-O=1 %s -o %t
 // RUN: %run %t
-// REQUIRES: aarch64-target-arch
+// REQUIRES: aarch64-target-arch || riscv64-target-arch
+
+// This test relies on aarch64 option thus it fails for risc-v
+// XFAIL: riscv64-target-arch
 
 static int global;
 

compiler-rt/test/hwasan/TestCases/stack-oob.c

@@ -10,7 +10,8 @@
 // REQUIRES: stable-runtime
 
 // Stack short granules are currently not implemented on x86.
-// XFAIL: x86_64
+// RISC-V target doesn't support oldrt
+// XFAIL: x86_64, riscv64
 
 #include <stdlib.h>
 #include <sanitizer/hwasan_interface.h>

compiler-rt/test/hwasan/TestCases/stack-uas.c

@@ -40,7 +40,7 @@ __attribute__((noinline)) void Unrelated3() {
 __attribute__((noinline)) char buggy() {
   char *volatile p;
   {
-    char zzz[0x1000];
+    char zzz[0x1000] = {};
     p = zzz;
   }
   return *p;

compiler-rt/test/hwasan/TestCases/tag-mismatch-border-address.c

@@ -3,7 +3,7 @@
 // RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK
 
 // REQUIRES: stable-runtime
-// REQUIRES: aarch64-target-arch
+// REQUIRES: aarch64-target-arch || riscv64-target-arch
 
 #include <sanitizer/hwasan_interface.h>
 #include <stdio.h>

compiler-rt/test/hwasan/TestCases/try-catch.cpp

@@ -5,6 +5,7 @@
 // RUN: %clangxx_hwasan_oldrt -static-libstdc++ %s -mllvm -hwasan-instrument-landing-pads=0 -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=BAD
 
 // C++ tests on x86_64 require instrumented libc++/libstdc++.
+// RISC-V target doesn't support oldrt
 // REQUIRES: aarch64-target-arch
 
 #include <stdexcept>

compiler-rt/test/hwasan/TestCases/use-after-scope-capture.cpp

@@ -2,7 +2,7 @@
 
 // RUN: %clangxx_hwasan -mllvm -hwasan-use-after-scope --std=c++11 -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
 
-// REQUIRES: aarch64-target-arch
+// REQUIRES: aarch64-target-arch || riscv64-target-arch
 // REQUIRES: stable-runtime
 
 #include <functional>

compiler-rt/test/hwasan/TestCases/use-after-scope-dtor-order.cpp

@@ -3,7 +3,7 @@
 // RUN: %clangxx_hwasan -mllvm -hwasan-use-after-scope -O1 %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
 
-// REQUIRES: aarch64-target-arch
+// REQUIRES: aarch64-target-arch || riscv64-target-arch
 // REQUIRES: stable-runtime
 
 #include <stdio.h>

compiler-rt/test/hwasan/TestCases/use-after-scope-goto.cpp

@@ -5,7 +5,7 @@
 // Function jumps over variable initialization making lifetime analysis
 // ambiguous. Asan should ignore such variable and program must not fail.
 
-// REQUIRES: aarch64-target-arch
+// REQUIRES: aarch64-target-arch || riscv64-target-arch
 // REQUIRES: stable-runtime
 
 #include <stdlib.h>