Revert "[XRay] [compiler-rt] Move machine-dependent code into machine-dependent files."

This reverts commit r290077, 78, 79 and 83.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@290101 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 14 deletions

diff --git a/lib/xray/xray_arm.cc b/lib/xray/xray_arm.cc
index d89322e83..9ce8451be 100644
--- a/lib/xray/xray_arm.cc
+++ b/lib/xray/xray_arm.cc
@@ -14,26 +14,12 @@
 //===----------------------------------------------------------------------===//
 #include "sanitizer_common/sanitizer_common.h"
 #include "xray_defs.h"
-#include "xray_emulate_tsc.h"
 #include "xray_interface_internal.h"
 #include <atomic>
 #include <cassert>
 
 namespace __xray {
 
-uint64_t cycleFrequency() XRAY_NEVER_INSTRUMENT {
-  // There is no instruction like RDTSCP in user mode on ARM.  ARM's CP15 does
-  //   not have a constant frequency like TSC on x86[_64]; it may go faster or
-  //   slower depending on CPU's turbo or power saving modes.  Furthermore, to
-  //   read from CP15 on ARM a kernel modification or a driver is needed.
-  //   We can not require this from users of compiler-rt.
-  // So on ARM we use clock_gettime(2) which gives the result in nanoseconds.
-  //   To get the measurements per second, we scale this by the number of
-  //   nanoseconds per second, pretending that the TSC frequency is 1GHz and
-  //   one TSC tick is 1 nanosecond.
-  return NanosecondsPerSecond;
-}
-
 // The machine codes for some instructions used in runtime patching.
 enum class PatchOpcodes : uint32_t {
   PO_PushR0Lr = 0xE92D4001, // PUSH {r0, lr}