Add a new interface to allow IR-level passes to access codegen-specific information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165665 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 28 insertions, 0 deletions

diff --git a/lib/VMCore/CMakeLists.txt b/lib/VMCore/CMakeLists.txt
index 6c30967974..ba807fcacc 100644
--- a/lib/VMCore/CMakeLists.txt
+++ b/lib/VMCore/CMakeLists.txt
@@ -33,6 +33,7 @@ add_llvm_library(LLVMCore
   PrintModulePass.cpp
   Type.cpp
   TypeFinder.cpp
+  TargetTransformInfo.cpp
   Use.cpp
   User.cpp
   Value.cpp
diff --git a/lib/VMCore/TargetTransformInfo.cpp b/lib/VMCore/TargetTransformInfo.cpp
new file mode 100644
index 0000000000..3af0222a21
--- /dev/null
+++ b/lib/VMCore/TargetTransformInfo.cpp
@@ -0,0 +1,27 @@
+//===- llvm/VMCore/TargetTransformInfo.cpp ----------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/TargetTransformInfo.h"
+#include "llvm/Support/ErrorHandling.h"
+
+using namespace llvm;
+
+/// Default ctor.
+///
+/// @note This has to exist, because this is a pass, but it should never be
+/// used.
+TargetTransformInfo::TargetTransformInfo() : ImmutablePass(ID) {
+  report_fatal_error("Bad TargetTransformInfo ctor used.  "
+                     "Tool did not specify a TargetTransformInfo to use?");
+}
+
+INITIALIZE_PASS(TargetTransformInfo, "TargetTransformInfo",
+                "Target Transform Info", false, true)
+char TargetTransformInfo::ID = 0;
+