Add TargetInfo libraries for all targets.

 - Intended to match current TargetMachine implementations.

 - No facilities for linking these in yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75751 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 119 insertions, 0 deletions

diff --git a/lib/Target/X86/TargetInfo/CMakeLists.txt b/lib/Target/X86/TargetInfo/CMakeLists.txt
new file mode 100644
index 0000000000..da454f118c
--- /dev/null
+++ b/lib/Target/X86/TargetInfo/CMakeLists.txt
@@ -0,0 +1,6 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMX86Info
+  X86TargetInfo.cpp
+  )
+
diff --git a/lib/Target/X86/TargetInfo/Makefile b/lib/Target/X86/TargetInfo/Makefile
new file mode 100644
index 0000000000..6677d4bdfd
--- /dev/null
+++ b/lib/Target/X86/TargetInfo/Makefile
@@ -0,0 +1,15 @@
+##===- lib/Target/X86/TargetInfo/Makefile ------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMX86Info
+
+# Hack: we need to include 'main' target directory to grab private headers
+CPPFLAGS = -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
diff --git a/lib/Target/X86/TargetInfo/X86TargetInfo.cpp b/lib/Target/X86/TargetInfo/X86TargetInfo.cpp
new file mode 100644
index 0000000000..9d811ab843
--- /dev/null
+++ b/lib/Target/X86/TargetInfo/X86TargetInfo.cpp
@@ -0,0 +1,98 @@
+//===-- X86TargetInfo.cpp - X86 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 TheX86_32Target;
+
+static unsigned X86_32_JITMatchQuality() {
+#if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
+  return 10;
+#endif
+  return 0;
+}
+
+static unsigned X86_32_TripleMatchQuality(const std::string &TT) {
+  // We strongly match "i[3-9]86-*".
+  if (TT.size() >= 5 && TT[0] == 'i' && TT[2] == '8' && TT[3] == '6' &&
+      TT[4] == '-' && TT[1] - '3' < 6)
+    return 20;
+
+  return 0;
+}
+
+static unsigned X86_32_ModuleMatchQuality(const Module &M) {
+  // Check for a triple match.
+  if (unsigned Q = X86_32_TripleMatchQuality(M.getTargetTriple()))
+    return Q;
+
+  // If the target triple is something non-X86, 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 X86_32_JITMatchQuality()/2;
+}
+
+Target TheX86_64Target;
+
+static unsigned X86_64_JITMatchQuality() {
+#if defined(__x86_64__) || defined(_M_AMD64)
+  return 10;
+#endif
+  return 0;
+}
+
+static unsigned X86_64_TripleMatchQuality(const std::string &TT) {
+  // We strongly match "x86_64-*".
+  if (TT.size() >= 7 && TT[0] == 'x' && TT[1] == '8' && TT[2] == '6' &&
+      TT[3] == '_' && TT[4] == '6' && TT[5] == '4' && TT[6] == '-')
+    return 20;
+  
+  return 0;
+}
+
+static unsigned X86_64_ModuleMatchQuality(const Module &M) {
+  // Check for a triple match.
+  if (unsigned Q = X86_64_TripleMatchQuality(M.getTargetTriple()))
+    return Q;
+
+  // If the target triple is something non-X86-64, we don't match.
+  if (!M.getTargetTriple().empty()) return 0;
+
+  if (M.getEndianness()  == Module::LittleEndian &&
+      M.getPointerSize() == Module::Pointer64)
+    return 10;                                   // Weak match
+  else if (M.getEndianness() != Module::AnyEndianness ||
+           M.getPointerSize() != Module::AnyPointerSize)
+    return 0;                                    // Match for some other target
+
+  return X86_64_JITMatchQuality()/2;
+}
+
+extern "C" void LLVMInitializeX86TargetInfo() { 
+  TargetRegistry::RegisterTarget(TheX86_32Target, "x86",    
+                                  "32-bit X86: Pentium-Pro and above",
+                                  &X86_32_TripleMatchQuality,
+                                  &X86_32_ModuleMatchQuality,
+                                  &X86_32_JITMatchQuality);
+
+  TargetRegistry::RegisterTarget(TheX86_64Target, "x86-64",    
+                                  "64-bit X86: EM64T and AMD64",
+                                  &X86_64_TripleMatchQuality,
+                                  &X86_64_ModuleMatchQuality,
+                                  &X86_64_JITMatchQuality);
+}