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R600/SI: Try to keep i32 mul on SALU
[oota-llvm.git] / lib / Target / X86 / X86MCInstLower.cpp
diff --git a/lib/Target/X86/X86MCInstLower.cpp b/lib/Target/X86/X86MCInstLower.cpp
index a2bee7a3235af71d317b89c0a445431f5ae760b5..ded84fc28f10df5edf2a1f21fd4efdbb4f7d5d0a 100644 (file)
--- a/lib/Target/X86/X86MCInstLower.cpp
+++ b/lib/Target/X86/X86MCInstLower.cpp
@@ -75,10 +75,10 @@ namespace llvm {
 
   void
   X86AsmPrinter::StackMapShadowTracker::startFunction(MachineFunction &MF) {
-    CodeEmitter.reset(TM.getTarget().createMCCodeEmitter(*TM.getInstrInfo(),
-                                                         *TM.getRegisterInfo(),
-                                                         *TM.getSubtargetImpl(),
-                                                         MF.getContext()));
+    CodeEmitter.reset(TM.getTarget().createMCCodeEmitter(
+        *TM.getSubtargetImpl()->getInstrInfo(),
+        *TM.getSubtargetImpl()->getRegisterInfo(), *TM.getSubtargetImpl(),
+        MF.getContext()));
   }
 
   void X86AsmPrinter::StackMapShadowTracker::count(MCInst &Inst,
@@ -124,7 +124,7 @@ MachineModuleInfoMachO &X86MCInstLower::getMachOMMI() const {
 /// operand to an MCSymbol.
 MCSymbol *X86MCInstLower::
 GetSymbolFromOperand(const MachineOperand &MO) const {
-  const DataLayout *DL = TM.getDataLayout();
+  const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
   assert((MO.isGlobal() || MO.isSymbol() || MO.isMBB()) && "Isn't a symbol reference");
 
   SmallString<128> Name;
@@ -583,14 +583,38 @@ ReSimplify:
   // Atomic load and store require a separate pseudo-inst because Acquire
   // implies mayStore and Release implies mayLoad; fix these to regular MOV
   // instructions here
-  case X86::ACQUIRE_MOV8rm:  OutMI.setOpcode(X86::MOV8rm); goto ReSimplify;
-  case X86::ACQUIRE_MOV16rm: OutMI.setOpcode(X86::MOV16rm); goto ReSimplify;
-  case X86::ACQUIRE_MOV32rm: OutMI.setOpcode(X86::MOV32rm); goto ReSimplify;
-  case X86::ACQUIRE_MOV64rm: OutMI.setOpcode(X86::MOV64rm); goto ReSimplify;
-  case X86::RELEASE_MOV8mr:  OutMI.setOpcode(X86::MOV8mr); goto ReSimplify;
-  case X86::RELEASE_MOV16mr: OutMI.setOpcode(X86::MOV16mr); goto ReSimplify;
-  case X86::RELEASE_MOV32mr: OutMI.setOpcode(X86::MOV32mr); goto ReSimplify;
-  case X86::RELEASE_MOV64mr: OutMI.setOpcode(X86::MOV64mr); goto ReSimplify;
+  case X86::ACQUIRE_MOV8rm:    OutMI.setOpcode(X86::MOV8rm); goto ReSimplify;
+  case X86::ACQUIRE_MOV16rm:   OutMI.setOpcode(X86::MOV16rm); goto ReSimplify;
+  case X86::ACQUIRE_MOV32rm:   OutMI.setOpcode(X86::MOV32rm); goto ReSimplify;
+  case X86::ACQUIRE_MOV64rm:   OutMI.setOpcode(X86::MOV64rm); goto ReSimplify;
+  case X86::RELEASE_MOV8mr:    OutMI.setOpcode(X86::MOV8mr); goto ReSimplify;
+  case X86::RELEASE_MOV16mr:   OutMI.setOpcode(X86::MOV16mr); goto ReSimplify;
+  case X86::RELEASE_MOV32mr:   OutMI.setOpcode(X86::MOV32mr); goto ReSimplify;
+  case X86::RELEASE_MOV64mr:   OutMI.setOpcode(X86::MOV64mr); goto ReSimplify;
+  case X86::RELEASE_MOV8mi:    OutMI.setOpcode(X86::MOV8mi); goto ReSimplify;
+  case X86::RELEASE_MOV16mi:   OutMI.setOpcode(X86::MOV16mi); goto ReSimplify;
+  case X86::RELEASE_MOV32mi:   OutMI.setOpcode(X86::MOV32mi); goto ReSimplify;
+  case X86::RELEASE_MOV64mi32: OutMI.setOpcode(X86::MOV64mi32); goto ReSimplify;
+  case X86::RELEASE_ADD8mi:    OutMI.setOpcode(X86::ADD8mi); goto ReSimplify;
+  case X86::RELEASE_ADD32mi:   OutMI.setOpcode(X86::ADD32mi); goto ReSimplify;
+  case X86::RELEASE_ADD64mi32: OutMI.setOpcode(X86::ADD64mi32); goto ReSimplify;
+  case X86::RELEASE_AND8mi:    OutMI.setOpcode(X86::AND8mi); goto ReSimplify;
+  case X86::RELEASE_AND32mi:   OutMI.setOpcode(X86::AND32mi); goto ReSimplify;
+  case X86::RELEASE_AND64mi32: OutMI.setOpcode(X86::AND64mi32); goto ReSimplify;
+  case X86::RELEASE_OR8mi:     OutMI.setOpcode(X86::OR8mi); goto ReSimplify;
+  case X86::RELEASE_OR32mi:    OutMI.setOpcode(X86::OR32mi); goto ReSimplify;
+  case X86::RELEASE_OR64mi32:  OutMI.setOpcode(X86::OR64mi32); goto ReSimplify;
+  case X86::RELEASE_XOR8mi:    OutMI.setOpcode(X86::XOR8mi); goto ReSimplify;
+  case X86::RELEASE_XOR32mi:   OutMI.setOpcode(X86::XOR32mi); goto ReSimplify;
+  case X86::RELEASE_XOR64mi32: OutMI.setOpcode(X86::XOR64mi32); goto ReSimplify;
+  case X86::RELEASE_INC8m:     OutMI.setOpcode(X86::INC8m); goto ReSimplify;
+  case X86::RELEASE_INC16m:    OutMI.setOpcode(X86::INC16m); goto ReSimplify;
+  case X86::RELEASE_INC32m:    OutMI.setOpcode(X86::INC32m); goto ReSimplify;
+  case X86::RELEASE_INC64m:    OutMI.setOpcode(X86::INC64m); goto ReSimplify;
+  case X86::RELEASE_DEC8m:     OutMI.setOpcode(X86::DEC8m); goto ReSimplify;
+  case X86::RELEASE_DEC16m:    OutMI.setOpcode(X86::DEC16m); goto ReSimplify;
+  case X86::RELEASE_DEC32m:    OutMI.setOpcode(X86::DEC32m); goto ReSimplify;
+  case X86::RELEASE_DEC64m:    OutMI.setOpcode(X86::DEC64m); goto ReSimplify;
 
   // We don't currently select the correct instruction form for instructions
   // which have a short %eax, etc. form. Handle this by custom lowering, for
@@ -826,10 +850,24 @@ void X86AsmPrinter::LowerPATCHPOINT(const MachineInstr &MI) {
            getSubtargetInfo());
 }
 
+// Returns instruction preceding MBBI in MachineFunction.
+// If MBBI is the first instruction of the first basic block, returns null.
+static MachineBasicBlock::const_iterator
+PrevCrossBBInst(MachineBasicBlock::const_iterator MBBI) {
+  const MachineBasicBlock *MBB = MBBI->getParent();
+  while (MBBI == MBB->begin()) {
+    if (MBB == MBB->getParent()->begin())
+      return nullptr;
+    MBB = MBB->getPrevNode();
+    MBBI = MBB->end();
+  }
+  return --MBBI;
+}
+
 void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
   X86MCInstLower MCInstLowering(*MF, *this);
-  const X86RegisterInfo *RI =
-      static_cast<const X86RegisterInfo *>(TM.getRegisterInfo());
+  const X86RegisterInfo *RI = static_cast<const X86RegisterInfo *>(
+      TM.getSubtargetImpl()->getRegisterInfo());
 
   switch (MI->getOpcode()) {
   case TargetOpcode::DBG_VALUE:
@@ -967,6 +1005,21 @@ void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
     OutStreamer.EmitWinCFIEndProlog();
     return;
 
+  case X86::SEH_Epilogue: {
+    MachineBasicBlock::const_iterator MBBI(MI);
+    // Check if preceded by a call and emit nop if so.
+    for (MBBI = PrevCrossBBInst(MBBI); MBBI; MBBI = PrevCrossBBInst(MBBI)) {
+      // Conservatively assume that pseudo instructions don't emit code and keep
+      // looking for a call. We may emit an unnecessary nop in some cases.
+      if (!MBBI->isPseudo()) {
+        if (MBBI->isCall())
+          EmitAndCountInstruction(MCInstBuilder(X86::NOOP));
+        break;
+      }
+    }
+    return;
+  }
+
   case X86::PSHUFBrm:
   case X86::VPSHUFBrm:
     // Lower PSHUFB normally but add a comment if we can find a constant
@@ -977,7 +1030,7 @@ void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
     SmallVector<int, 16> Mask;
 
     assert(MI->getNumOperands() >= 6 &&
-           "Wrong number of operansd for PSHUFBrm or VPSHUFBrm");
+           "Wrong number of operands for PSHUFBrm or VPSHUFBrm");
     const MachineOperand &DstOp = MI->getOperand(0);
     const MachineOperand &SrcOp = MI->getOperand(1);
     const MachineOperand &MaskOp = MI->getOperand(5);
@@ -999,7 +1052,7 @@ void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
       ArrayRef<MachineConstantPoolEntry> Constants =
           MI->getParent()->getParent()->getConstantPool()->getConstants();
       const MachineConstantPoolEntry &MaskConstantEntry =
-          Constants[MI->getOperand(5).getIndex()];
+          Constants[MaskOp.getIndex()];
       Type *MaskTy = MaskConstantEntry.getType();
       (void)MaskTy;
       if (!MaskConstantEntry.isMachineConstantPoolEntry())
C/C++ LLVM-based compilers that forbids OOTA behaviors