[compiler-rt] [compiler-rt][hwasan] Add fiber switch for HwASan (PR #153822)

[via llvm-commits]

================
@@ -0,0 +1,202 @@
+// Check that HwASan plays well with annotated makecontext/swapcontext.
+
+// RUN: %clangxx_hwasan -std=c++11 -lpthread -O0 %s -o %t && %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_hwasan -std=c++11 -lpthread -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_hwasan -std=c++11 -lpthread -O2 %s -o %t && %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_hwasan -std=c++11 -lpthread -O3 %s -o %t && %run %t 2>&1 | FileCheck %s
+// RUN: seq 60 | xargs -i -- grep LOOPCHECK %s > %t.checks
+// RUN: %clangxx_hwasan -std=c++11 -lpthread -O0 %s -o %t && %run %t 2>&1 | FileCheck %t.checks --check-prefix LOOPCHECK
+// RUN: %clangxx_hwasan -std=c++11 -lpthread -O1 %s -o %t && %run %t 2>&1 | FileCheck %t.checks --check-prefix LOOPCHECK
+// RUN: %clangxx_hwasan -std=c++11 -lpthread -O2 %s -o %t && %run %t 2>&1 | FileCheck %t.checks --check-prefix LOOPCHECK
+// RUN: %clangxx_hwasan -std=c++11 -lpthread -O3 %s -o %t && %run %t 2>&1 | FileCheck %t.checks --check-prefix LOOPCHECK
+
+//
+// This test is too subtle to try on non-x86 arch for now.
----------------
Tomahawkd wrote:

I have refined the testcase and tested on aarch64 platform

https://github.com/llvm/llvm-project/pull/153822