Update llvm to trunk r256633.

1 files changed, 38 insertions, 0 deletions

diff --git a/contrib/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp b/contrib/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp
new file mode 100644
index 000000000000..a05443eb83b8
--- /dev/null
+++ b/contrib/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp
@@ -0,0 +1,38 @@
+//===-- HexagonTargetTransformInfo.cpp - Hexagon specific TTI pass --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+/// \file
+/// This file implements a TargetTransformInfo analysis pass specific to the
+/// Hexagon target machine. It uses the target's detailed information to provide
+/// more precise answers to certain TTI queries, while letting the target
+/// independent and default TTI implementations handle the rest.
+///
+//===----------------------------------------------------------------------===//
+
+#include "HexagonTargetTransformInfo.h"
+#include "llvm/Support/Debug.h"
+
+using namespace llvm;
+
+#define DEBUG_TYPE "hexagontti"
+
+TargetTransformInfo::PopcntSupportKind
+HexagonTTIImpl::getPopcntSupport(unsigned IntTyWidthInBit) const {
+  // Return Fast Hardware support as every input  < 64 bits will be promoted
+  // to 64 bits.
+  return TargetTransformInfo::PSK_FastHardware;
+}
+
+// The Hexagon target can unroll loops with run-time trip counts.
+void HexagonTTIImpl::getUnrollingPreferences(Loop *L,
+                                             TTI::UnrollingPreferences &UP) {
+  UP.Runtime = UP.Partial = true;
+}
+
+unsigned HexagonTTIImpl::getNumberOfRegisters(bool vector) const {
+  return vector ? 0 : 32;
+}