This reverts commits r294826 and r294781 as they break linking on powerpc.

Revert "Fix -Wsign-compare - this might not be quite right, but preserves behavior"
Revert "[XRay] Implement powerpc64le xray."

This reverts commit r294826.
This reverts commit r294781.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@294842 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 95 deletions

diff --git a/lib/xray/xray_powerpc64.cc b/lib/xray/xray_powerpc64.cc
deleted file mode 100644
index 6c5e18ff4..000000000
--- a/lib/xray/xray_powerpc64.cc
+++ /dev/null
@@ -1,95 +0,0 @@
-//===-- xray_AArch64.cc -----------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file is a part of XRay, a dynamic runtime instrumentation system.
-//
-// Implementation of powerpc64 and powerpc64le routines.
-//
-//===----------------------------------------------------------------------===//
-#include "sanitizer_common/sanitizer_common.h"
-#include "xray_defs.h"
-#include "xray_interface_internal.h"
-#include "xray_utils.h"
-#include <atomic>
-#include <cassert>
-#include <cstring>
-
-#ifndef __LITTLE_ENDIAN__
-#error powerpc64 big endian is not supported for now.
-#endif
-
-namespace {
-
-constexpr unsigned long long JumpOverInstNum = 7;
-
-void clearCache(void *Addr, size_t Len) {
-  const size_t LineSize = 32;
-
-  const intptr_t Mask = ~(LineSize - 1);
-  const intptr_t StartLine = ((intptr_t)Addr) & Mask;
-  const intptr_t EndLine = ((intptr_t)Addr + Len + LineSize - 1) & Mask;
-
-  for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
-    asm volatile("dcbf 0, %0" : : "r"(Line));
-  asm volatile("sync");
-
-  for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
-    asm volatile("icbi 0, %0" : : "r"(Line));
-  asm volatile("isync");
-}
-
-} // namespace
-
-extern "C" void __clear_cache(void *start, void *end);
-
-namespace __xray {
-
-bool patchFunctionEntry(const bool Enable, uint32_t FuncId,
-                        const XRaySledEntry &Sled) XRAY_NEVER_INSTRUMENT {
-  if (Enable) {
-    // lis 0, FuncId[16..32]
-    // li 0, FuncId[0..15]
-    *reinterpret_cast<uint64_t *>(Sled.Address) =
-        (0x3c000000ull + (FuncId >> 16)) +
-        ((0x60000000ull + (FuncId & 0xffff)) << 32);
-  } else {
-    // b +JumpOverInstNum instructions.
-    *reinterpret_cast<uint32_t *>(Sled.Address) =
-        0x48000000ull + (JumpOverInstNum << 2);
-  }
-  clearCache(reinterpret_cast<void *>(Sled.Address), 8);
-  return true;
-}
-
-bool patchFunctionExit(const bool Enable, uint32_t FuncId,
-                       const XRaySledEntry &Sled) XRAY_NEVER_INSTRUMENT {
-  if (Enable) {
-    // lis 0, FuncId[16..32]
-    // li 0, FuncId[0..15]
-    *reinterpret_cast<uint64_t *>(Sled.Address) =
-        (0x3c000000ull + (FuncId >> 16)) +
-        ((0x60000000ull + (FuncId & 0xffff)) << 32);
-  } else {
-    // Copy the blr/b instruction after JumpOverInstNum instructions.
-    *reinterpret_cast<uint32_t *>(Sled.Address) =
-        *(reinterpret_cast<uint32_t *>(Sled.Address) + JumpOverInstNum);
-  }
-  clearCache(reinterpret_cast<void *>(Sled.Address), 8);
-  return true;
-}
-
-bool patchFunctionTailExit(const bool Enable, const uint32_t FuncId,
-                           const XRaySledEntry &Sled) XRAY_NEVER_INSTRUMENT {
-  return patchFunctionExit(Enable, FuncId, Sled);
-}
-
-// FIXME: Maybe implement this better?
-bool probeRequiredCPUFeatures() XRAY_NEVER_INSTRUMENT { return true; }
-
-} // namespace __xray