1 files changed, 142 insertions, 0 deletions
diff --git a/lib/Target/X86/X86LegalizerInfo.cpp b/lib/Target/X86/X86LegalizerInfo.cpp
new file mode 100644
index 000000000000..c2dc762fec5e
--- /dev/null
+++ b/lib/Target/X86/X86LegalizerInfo.cpp
@@ -0,0 +1,142 @@
+//===- X86LegalizerInfo.cpp --------------------------------------*- C++ -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+/// This file implements the targeting of the Machinelegalizer class for X86.
+/// \todo This should be generated by TableGen.
+//===----------------------------------------------------------------------===//
+
+#include "X86LegalizerInfo.h"
+#include "X86Subtarget.h"
+#include "X86TargetMachine.h"
+#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Type.h"
+#include "llvm/Target/TargetOpcodes.h"
+
+using namespace llvm;
+using namespace TargetOpcode;
+
+#ifndef LLVM_BUILD_GLOBAL_ISEL
+#error "You shouldn't build this"
+#endif
+
+X86LegalizerInfo::X86LegalizerInfo(const X86Subtarget &STI,
+                                   const X86TargetMachine &TM)
+    : Subtarget(STI), TM(TM) {
+
+  setLegalizerInfo32bit();
+  setLegalizerInfo64bit();
+  setLegalizerInfoSSE1();
+  setLegalizerInfoSSE2();
+
+  computeTables();
+}
+
+void X86LegalizerInfo::setLegalizerInfo32bit() {
+
+  if (Subtarget.is64Bit())
+    return;
+
+  const LLT p0 = LLT::pointer(0, 32);
+  const LLT s1 = LLT::scalar(1);
+  const LLT s8 = LLT::scalar(8);
+  const LLT s16 = LLT::scalar(16);
+  const LLT s32 = LLT::scalar(32);
+  const LLT s64 = LLT::scalar(64);
+
+  for (unsigned BinOp : {G_ADD, G_SUB})
+    for (auto Ty : {s8, s16, s32})
+      setAction({BinOp, Ty}, Legal);
+
+  for (unsigned MemOp : {G_LOAD, G_STORE}) {
+    for (auto Ty : {s8, s16, s32, p0})
+      setAction({MemOp, Ty}, Legal);
+
+    // And everything's fine in addrspace 0.
+    setAction({MemOp, 1, p0}, Legal);
+  }
+
+  // Pointer-handling
+  setAction({G_FRAME_INDEX, p0}, Legal);
+
+  // Constants
+  for (auto Ty : {s8, s16, s32, p0})
+    setAction({TargetOpcode::G_CONSTANT, Ty}, Legal);
+
+  setAction({TargetOpcode::G_CONSTANT, s1}, WidenScalar);
+  setAction({TargetOpcode::G_CONSTANT, s64}, NarrowScalar);
+}
+
+void X86LegalizerInfo::setLegalizerInfo64bit() {
+
+  if (!Subtarget.is64Bit())
+    return;
+
+  const LLT p0 = LLT::pointer(0, TM.getPointerSize() * 8);
+  const LLT s1 = LLT::scalar(1);
+  const LLT s8 = LLT::scalar(8);
+  const LLT s16 = LLT::scalar(16);
+  const LLT s32 = LLT::scalar(32);
+  const LLT s64 = LLT::scalar(64);
+
+  for (unsigned BinOp : {G_ADD, G_SUB})
+    for (auto Ty : {s8, s16, s32, s64})
+      setAction({BinOp, Ty}, Legal);
+
+  for (unsigned MemOp : {G_LOAD, G_STORE}) {
+    for (auto Ty : {s8, s16, s32, s64, p0})
+      setAction({MemOp, Ty}, Legal);
+
+    // And everything's fine in addrspace 0.
+    setAction({MemOp, 1, p0}, Legal);
+  }
+
+  // Pointer-handling
+  setAction({G_FRAME_INDEX, p0}, Legal);
+
+  // Constants
+  for (auto Ty : {s8, s16, s32, s64, p0})
+    setAction({TargetOpcode::G_CONSTANT, Ty}, Legal);
+
+  setAction({TargetOpcode::G_CONSTANT, s1}, WidenScalar);
+}
+
+void X86LegalizerInfo::setLegalizerInfoSSE1() {
+  if (!Subtarget.hasSSE1())
+    return;
+
+  const LLT s32 = LLT::scalar(32);
+  const LLT v4s32 = LLT::vector(4, 32);
+  const LLT v2s64 = LLT::vector(2, 64);
+
+  for (unsigned BinOp : {G_FADD, G_FSUB, G_FMUL, G_FDIV})
+    for (auto Ty : {s32, v4s32})
+      setAction({BinOp, Ty}, Legal);
+
+  for (unsigned MemOp : {G_LOAD, G_STORE})
+    for (auto Ty : {v4s32, v2s64})
+      setAction({MemOp, Ty}, Legal);
+}
+
+void X86LegalizerInfo::setLegalizerInfoSSE2() {
+  if (!Subtarget.hasSSE2())
+    return;
+
+  const LLT s64 = LLT::scalar(64);
+  const LLT v4s32 = LLT::vector(4, 32);
+  const LLT v2s64 = LLT::vector(2, 64);
+
+  for (unsigned BinOp : {G_FADD, G_FSUB, G_FMUL, G_FDIV})
+    for (auto Ty : {s64, v2s64})
+      setAction({BinOp, Ty}, Legal);
+
+  for (unsigned BinOp : {G_ADD, G_SUB})
+    for (auto Ty : {v4s32})
+      setAction({BinOp, Ty}, Legal);
+}