Add TargetInfo libraries for all targets.

 - Intended to match current TargetMachine implementations.

 - No facilities for linking these in yet.

llvm-svn: 75751

1 files changed, 98 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/TargetInfo/ARMTargetInfo.cpp b/llvm/lib/Target/ARM/TargetInfo/ARMTargetInfo.cpp
new file mode 100644
index 00000000000..a08c915bc6a
--- /dev/null
+++ b/llvm/lib/Target/ARM/TargetInfo/ARMTargetInfo.cpp
@@ -0,0 +1,98 @@
+//===-- ARMTargetInfo.cpp - ARM Target Implementation ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Module.h"
+#include "llvm/Target/TargetRegistry.h"
+using namespace llvm;
+
+Target TheARMTarget;
+
+static unsigned ARM_JITMatchQuality() {
+#if defined(__arm__)
+  return 10;
+#endif
+  return 0;
+}
+
+static unsigned ARM_TripleMatchQuality(const std::string &TT) {
+  // Match arm-foo-bar, as well as things like armv5blah-*
+  if (TT.size() >= 4 &&
+      (TT.substr(0, 4) == "arm-" || TT.substr(0, 4) == "armv"))
+    return 20;
+
+  return 0;
+}
+
+static unsigned ARM_ModuleMatchQuality(const Module &M) {
+  // Check for a triple match.
+  if (unsigned Q = ARM_TripleMatchQuality(M.getTargetTriple()))
+    return Q;
+
+  // Otherwise if the target triple is non-empty, we don't match.
+  if (!M.getTargetTriple().empty()) return 0;
+
+  if (M.getEndianness()  == Module::LittleEndian &&
+      M.getPointerSize() == Module::Pointer32)
+    return 10;                                   // Weak match
+  else if (M.getEndianness() != Module::AnyEndianness ||
+           M.getPointerSize() != Module::AnyPointerSize)
+    return 0;                                    // Match for some other target
+
+  return ARM_JITMatchQuality()/2;
+}
+
+Target TheThumbTarget;
+
+static unsigned Thumb_JITMatchQuality() {
+#if defined(__thumb__)
+  return 10;
+#endif
+  return 0;
+}
+
+static unsigned Thumb_TripleMatchQuality(const std::string &TT) {
+  // Match thumb-foo-bar, as well as things like thumbv5blah-*
+  if (TT.size() >= 6 &&
+      (TT.substr(0, 6) == "thumb-" || TT.substr(0, 6) == "thumbv"))
+    return 20;
+
+  return 0;
+}
+
+static unsigned Thumb_ModuleMatchQuality(const Module &M) {
+  // Check for a triple match.
+  if (unsigned Q = Thumb_TripleMatchQuality(M.getTargetTriple()))
+    return Q;
+
+  // Otherwise if the target triple is non-empty, we don't match.
+  if (!M.getTargetTriple().empty()) return 0;
+
+  if (M.getEndianness()  == Module::LittleEndian &&
+      M.getPointerSize() == Module::Pointer32)
+    return 10;                                   // Weak match
+  else if (M.getEndianness() != Module::AnyEndianness ||
+           M.getPointerSize() != Module::AnyPointerSize)
+    return 0;                                    // Match for some other target
+
+  return Thumb_JITMatchQuality()/2;
+}
+
+extern "C" void LLVMInitializeARMTargetInfo() { 
+  TargetRegistry::RegisterTarget(TheARMTarget, "arm",    
+                                  "ARM",
+                                  &ARM_TripleMatchQuality,
+                                  &ARM_ModuleMatchQuality,
+                                  &ARM_JITMatchQuality);
+
+  TargetRegistry::RegisterTarget(TheThumbTarget, "thumb",    
+                                  "Thumb",
+                                  &Thumb_TripleMatchQuality,
+                                  &Thumb_ModuleMatchQuality,
+                                  &Thumb_JITMatchQuality);
+}