[mips] Use __clear_cache builtin instead of cacheflush() in Unix Memory::InvalidateInstructionCache()

MIPS64 Android bionic has removed cacheflush(). Use __clear_cache() instead for 32-bit and 64-bit MIPS

Patch by Duane Sand <Duane.Sand@imgtec.com>

llvm-svn: 211588

1 files changed, 2 insertions, 10 deletions

diff --git a/llvm/lib/Support/Unix/Memory.inc b/llvm/lib/Support/Unix/Memory.inc
index c9d89a82474..cae39d4edc1 100644
--- a/llvm/lib/Support/Unix/Memory.inc
+++ b/llvm/lib/Support/Unix/Memory.inc
@@ -333,23 +333,15 @@ void Memory::InvalidateInstructionCache(const void *Addr,
   for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
     asm volatile("icbi 0, %0" : : "r"(Line));
   asm volatile("isync");
-#  elif (defined(__arm__) || defined(__aarch64__)) && defined(__GNUC__)
+#  elif (defined(__arm__) || defined(__aarch64__) || defined(__mips__)) && defined(__GNUC__)
   // FIXME: Can we safely always call this for __GNUC__ everywhere?
+  // Use compiler's builtin
   const char *Start = static_cast<const char *>(Addr);
   const char *End = Start + Len;
   __clear_cache(const_cast<char *>(Start), const_cast<char *>(End));
 #  elif defined(__mips__)
   const char *Start = static_cast<const char *>(Addr);
-#    if defined(ANDROID)
-  // The declaration of "cacheflush" in Android bionic:
-  // extern int cacheflush(long start, long end, long flags);
-  const char *End = Start + Len;
-  long LStart = reinterpret_cast<long>(const_cast<char *>(Start));
-  long LEnd = reinterpret_cast<long>(const_cast<char *>(End));
-  cacheflush(LStart, LEnd, BCACHE);
-#    else
   cacheflush(const_cast<char *>(Start), Len, BCACHE);
-#    endif
 #  endif
 
 #endif  // end apple