[TySan] TySan support for SystemZ - Re-submission of original pr#162396 (#169850)

This is a re-submission of original reverted patch [(#162396)
](https://github.com/llvm/llvm-project/pull/162396url)for adding TySan
support for systemzZ along with build failure patch
[#169746](#169746).

See conversations in #169746.

Co-authored-by: anoopkg6 <[email protected]>

Author: anoopkg6

clang/lib/Driver/ToolChains/Linux.cpp

@@ -922,7 +922,7 @@ SanitizerMask Linux::getSupportedSanitizers() const {
   if (IsX86_64 || IsMIPS64 || IsAArch64 || IsPowerPC64 || IsSystemZ ||
       IsLoongArch64 || IsRISCV64)
     Res |= SanitizerKind::Thread;
-  if (IsX86_64 || IsAArch64)
+  if (IsX86_64 || IsAArch64 || IsSystemZ)
     Res |= SanitizerKind::Type;
   if (IsX86_64 || IsSystemZ || IsPowerPC64)
     Res |= SanitizerKind::KernelMemory;

compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake

@@ -89,7 +89,7 @@ else()
   set(ALL_TSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${PPC64} ${S390X}
       ${LOONGARCH64} ${RISCV64})
 endif()
-set(ALL_TYSAN_SUPPORTED_ARCH ${X86_64} ${ARM64})
+set(ALL_TYSAN_SUPPORTED_ARCH ${X86_64} ${ARM64} ${S390X})
 set(ALL_UBSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${RISCV64}
     ${MIPS32} ${MIPS64} ${PPC64} ${S390X} ${SPARC} ${SPARCV9} ${HEXAGON}
     ${LOONGARCH64})

compiler-rt/lib/tysan/tysan_platform.h

@@ -45,6 +45,13 @@ struct Mapping48 {
   static const uptr kPtrShift = 3;
 };
 #define TYSAN_RUNTIME_VMA 1
+#elif defined(__s390x__)
+struct Mapping {
+  static const uptr kShadowAddr = 0x080000000000ULL;
+  static const uptr kAppAddr = 0x460000000000ULL;
+  static const uptr kAppMemMsk = ~0xC00000000000ULL;
+  static const uptr kPtrShift = 3;
+};
 #else
 #error "TySan not supported for this platform!"
 #endif