add a method to compute a commonly used mapping.

[oota-llvm.git] / lib / Target / TargetMachine.cpp

diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 2c8b79622a43e50c4d73f7a81ffc2dfbe6620aa7..22df91faeb8127870a9fdb6d18353dbc5bc92ba5 100644 (file)
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -13,9 +13,36 @@
 
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Type.h"
-#include "llvm/IntrinsicLowering.h"
+#include "llvm/CodeGen/IntrinsicLowering.h"
+#include "llvm/Support/CommandLine.h"
 using namespace llvm;
 
+//---------------------------------------------------------------------------
+// Command-line options that tend to be useful on more than one back-end.
+//
+
+namespace llvm {
+  bool PrintMachineCode;
+  bool NoFramePointerElim;
+  bool NoExcessFPPrecision;
+};
+namespace {
+  cl::opt<bool, true> PrintCode("print-machineinstrs",
+    cl::desc("Print generated machine code"),
+    cl::location(PrintMachineCode), cl::init(false));
+
+  cl::opt<bool, true> 
+    DisableFPElim("disable-fp-elim",
+                  cl::desc("Disable frame pointer elimination optimization"),
+                  cl::location(NoFramePointerElim),
+                  cl::init(false));
+  cl::opt<bool, true>
+  DisableExcessPrecision("disable-excess-fp-precision",
+                         cl::desc("Disable optimizations that may increase FP precision"),
+                         cl::location(NoExcessFPPrecision),
+                         cl::init(false));
+};
+
 //---------------------------------------------------------------------------
 // TargetMachine Class
 //
@@ -24,12 +51,20 @@ TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
                              unsigned char PtrSize, unsigned char PtrAl,
                              unsigned char DoubleAl, unsigned char FloatAl,
                              unsigned char LongAl, unsigned char IntAl,
-                             unsigned char ShortAl, unsigned char ByteAl)
+                             unsigned char ShortAl, unsigned char ByteAl,
+                             unsigned char BoolAl)
   : Name(name), DataLayout(name, LittleEndian,
                            PtrSize, PtrAl, DoubleAl, FloatAl, LongAl,
-                           IntAl, ShortAl, ByteAl) {
+                           IntAl, ShortAl, ByteAl, BoolAl) {
+  IL = il ? il : new DefaultIntrinsicLowering();
+}
+
+TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
+                             const TargetData &TD)
+  : Name(name), DataLayout(TD) {
   IL = il ? il : new DefaultIntrinsicLowering();
 }
+
 TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
                              const Module &M)
   : Name(name), DataLayout(name, &M) {
@@ -40,10 +75,3 @@ TargetMachine::~TargetMachine() {
   delete IL;
 }
 
-unsigned TargetMachine::findOptimalStorageSize(const Type *Ty) const {
-  // All integer types smaller than ints promote to 4 byte integers.
-  if (Ty->isIntegral() && Ty->getPrimitiveSize() < 4)
-    return 4;
-
-  return DataLayout.getTypeSize(Ty);
-}