[ShrinkWrap] Add (a simplified version) of shrink-wrapping.

[oota-llvm.git] / lib / Target / MSP430 / MSP430RegisterInfo.td

diff --git a/lib/Target/MSP430/MSP430RegisterInfo.td b/lib/Target/MSP430/MSP430RegisterInfo.td
index 27a9842cfa2cb4fd1e88cc91f834d862df88480e..b5a6ed0f0a56d2de3a4004897083adbcad209307 100644 (file)
--- a/lib/Target/MSP430/MSP430RegisterInfo.td
+++ b/lib/Target/MSP430/MSP430RegisterInfo.td
@@ -1,4 +1,4 @@
-//===- MSP430RegisterInfo.td - MSP430 Register defs ----------*- tblgen -*-===//
+//===-- MSP430RegisterInfo.td - MSP430 Register defs -------*- tablegen -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -16,50 +16,66 @@ class MSP430Reg<bits<4> num, string n> : Register<n> {
   let Namespace = "MSP430";
 }
 
+class MSP430RegWithSubregs<bits<4> num, string n, list<Register> subregs> 
+  : RegisterWithSubRegs<n, subregs> {
+  field bits<4> Num = num;
+  let Namespace = "MSP430";
+}
+
 //===----------------------------------------------------------------------===//
 //  Registers
 //===----------------------------------------------------------------------===//
 
-def PC  : MSP430Reg<0,  "R0">;
-def SP  : MSP430Reg<1,  "R1">;
-def SR  : MSP430Reg<2,  "R2">;
-def CG  : MSP430Reg<3,  "R3">;
-def FP  : MSP430Reg<4,  "R4">;
-def R5  : MSP430Reg<5,  "R5">;
-def R6  : MSP430Reg<6,  "R6">;
-def R7  : MSP430Reg<7,  "R7">;
-def R8  : MSP430Reg<8,  "R8">;
-def R9  : MSP430Reg<9,  "R9">;
-def R10 : MSP430Reg<10, "R10">;
-def R11 : MSP430Reg<11, "R11">;
-def R12 : MSP430Reg<12, "R12">;
-def R13 : MSP430Reg<13, "R13">;
-def R14 : MSP430Reg<14, "R14">;
-def R15 : MSP430Reg<15, "R15">;
+def PCB  : MSP430Reg<0,  "r0">;
+def SPB  : MSP430Reg<1,  "r1">;
+def SRB  : MSP430Reg<2,  "r2">;
+def CGB  : MSP430Reg<3,  "r3">;
+def FPB  : MSP430Reg<4,  "r4">;
+def R5B  : MSP430Reg<5,  "r5">;
+def R6B  : MSP430Reg<6,  "r6">;
+def R7B  : MSP430Reg<7,  "r7">;
+def R8B  : MSP430Reg<8,  "r8">;
+def R9B  : MSP430Reg<9,  "r9">;
+def R10B : MSP430Reg<10, "r10">;
+def R11B : MSP430Reg<11, "r11">;
+def R12B : MSP430Reg<12, "r12">;
+def R13B : MSP430Reg<13, "r13">;
+def R14B : MSP430Reg<14, "r14">;
+def R15B : MSP430Reg<15, "r15">;
+
+def subreg_8bit : SubRegIndex<8> { let Namespace = "MSP430"; }
+
+let SubRegIndices = [subreg_8bit] in {
+def PC  : MSP430RegWithSubregs<0,  "r0",  [PCB]>;
+def SP  : MSP430RegWithSubregs<1,  "r1",  [SPB]>;
+def SR  : MSP430RegWithSubregs<2,  "r2",  [SRB]>;
+def CG  : MSP430RegWithSubregs<3,  "r3",  [CGB]>;
+def FP  : MSP430RegWithSubregs<4,  "r4",  [FPB]>;
+def R5  : MSP430RegWithSubregs<5,  "r5",  [R5B]>;
+def R6  : MSP430RegWithSubregs<6,  "r6",  [R6B]>;
+def R7  : MSP430RegWithSubregs<7,  "r7",  [R7B]>;
+def R8  : MSP430RegWithSubregs<8,  "r8",  [R8B]>;
+def R9  : MSP430RegWithSubregs<9,  "r9",  [R9B]>;
+def R10 : MSP430RegWithSubregs<10, "r10", [R10B]>;
+def R11 : MSP430RegWithSubregs<11, "r11", [R11B]>;
+def R12 : MSP430RegWithSubregs<12, "r12", [R12B]>;
+def R13 : MSP430RegWithSubregs<13, "r13", [R13B]>;
+def R14 : MSP430RegWithSubregs<14, "r14", [R14B]>;
+def R15 : MSP430RegWithSubregs<15, "r15", [R15B]>;
+}
 
-def MSP430Regs : RegisterClass<"MSP430", [i16], 16,
+def GR8 : RegisterClass<"MSP430", [i8], 8,
    // Volatile registers
-  [R12, R13, R14, R15, R11, R10, R9, R8, R7, R6, R5,
+  (add R12B, R13B, R14B, R15B, R11B, R10B, R9B, R8B, R7B, R6B, R5B,
    // Frame pointer, sometimes allocable
-   FP,
+   FPB,
    // Volatile, but not allocable
-   PC, SP, SR, CG]>
-{
-  let MethodProtos = [{
-    iterator allocation_order_end(const MachineFunction &MF) const;
-  }];
-  let MethodBodies = [{
-    MSP430RegsClass::iterator
-    MSP430RegsClass::allocation_order_end(const MachineFunction &MF) const {
-      const TargetMachine &TM = MF.getTarget();
-      const TargetRegisterInfo *RI = TM.getRegisterInfo();
-      // Depending on whether the function uses frame pointer or not, last 5 or 4
-      // registers on the list above are reserved
-      if (RI->hasFP(MF))
-        return end()-5;
-      else
-        return end()-4;
-    }
-  }];
-}
+   PCB, SPB, SRB, CGB)>;
 
+def GR16 : RegisterClass<"MSP430", [i16], 16,
+   // Volatile registers
+  (add R12, R13, R14, R15, R11, R10, R9, R8, R7, R6, R5,
+   // Frame pointer, sometimes allocable
+   FP,
+   // Volatile, but not allocable
+   PC, SP, SR, CG)>;