Let's start another backend :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75909 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 72 insertions, 0 deletions

diff --git a/lib/Target/SystemZ/SystemZTargetMachine.cpp b/lib/Target/SystemZ/SystemZTargetMachine.cpp
new file mode 100644
index 0000000000..a8b2b7688c
--- /dev/null
+++ b/lib/Target/SystemZ/SystemZTargetMachine.cpp
@@ -0,0 +1,72 @@
+//===-- SystemZTargetMachine.cpp - Define TargetMachine for SystemZ -----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+//===----------------------------------------------------------------------===//
+
+#include "SystemZTargetAsmInfo.h"
+#include "SystemZTargetMachine.h"
+#include "SystemZ.h"
+#include "llvm/Module.h"
+#include "llvm/PassManager.h"
+#include "llvm/Target/TargetMachineRegistry.h"
+using namespace llvm;
+
+/// SystemZTargetMachineModule - Note that this is used on hosts that
+/// cannot link in a library unless there are references into the
+/// library.  In particular, it seems that it is not possible to get
+/// things to work on Win32 without this.  Though it is unused, do not
+/// remove it.
+extern "C" int SystemZTargetMachineModule;
+int SystemZTargetMachineModule = 0;
+
+// Register the target.
+static RegisterTarget<SystemZTargetMachine>
+X("systemz", "SystemZ [experimental]");
+
+const TargetAsmInfo *SystemZTargetMachine::createTargetAsmInfo() const {
+  // FIXME: Handle Solaris subtarget someday :)
+  return new SystemZTargetAsmInfo(*this);
+}
+
+/// SystemZTargetMachine ctor - Create an ILP64 architecture model
+///
+SystemZTargetMachine::SystemZTargetMachine(const Module &M, const std::string &FS)
+  : Subtarget(*this, M, FS),
+    DataLayout("E-p:64:64:64-i1:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128"),
+    InstrInfo(*this), TLInfo(*this),
+    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, 0) {
+}
+
+bool SystemZTargetMachine::addInstSelector(PassManagerBase &PM,
+                                          CodeGenOpt::Level OptLevel) {
+  // Install an instruction selector.
+  PM.add(createSystemZISelDag(*this, OptLevel));
+  return false;
+}
+
+bool SystemZTargetMachine::addAssemblyEmitter(PassManagerBase &PM,
+                                             CodeGenOpt::Level OptLevel,
+                                             bool Verbose,
+                                             raw_ostream &Out) {
+  // Output assembly language.
+  PM.add(createSystemZCodePrinterPass(Out, *this, OptLevel, Verbose));
+  return false;
+}
+
+unsigned SystemZTargetMachine::getModuleMatchQuality(const Module &M) {
+  std::string TT = M.getTargetTriple();
+
+  // We strongly match s390x
+  if (TT.size() >= 5 && TT[0] == 's' && TT[1] == '3' && TT[2] == '9' &&
+      TT[3] == '0' &&  TT[4] == 'x')
+    return 20;
+
+  return 0;
+}