Add register-reuse to frame-index register scavenging. When a target uses

[oota-llvm.git] / lib / Target / PIC16 / PIC16InstrInfo.td

diff --git a/lib/Target/PIC16/PIC16InstrInfo.td b/lib/Target/PIC16/PIC16InstrInfo.td
index db798e434c009bb0541384765ec42581ca3e3a1a..250ca0a373f21a2a296f630071d829d55dd2c636 100644 (file)
--- a/lib/Target/PIC16/PIC16InstrInfo.td
+++ b/lib/Target/PIC16/PIC16InstrInfo.td
@@ -115,6 +115,8 @@ def PIC16Brcond : SDNode<"PIC16ISD::BRCOND", SDT_PIC16Brcond,
 def PIC16Selecticc : SDNode<"PIC16ISD::SELECT_ICC", SDT_PIC16Selecticc, 
                          [SDNPInFlag]>;
 
+def PIC16ret       : SDNode<"PIC16ISD::RET", SDTNone, [SDNPHasChain]>;
+
 //===----------------------------------------------------------------------===//
 // PIC16 Operand Definitions.
 //===----------------------------------------------------------------------===//
@@ -189,22 +191,22 @@ def movlw : BitFormat<12, (outs GPR:$dst), (ins i8imm:$src),
 
 // Move a Lo(TGA) to W.
 def movlw_lo_1 : BitFormat<12, (outs GPR:$dst), (ins i8imm:$src, i8imm:$src2),
-                      "movlw LOW(${src}) + ${src2}",
+                      "movlw LOW(${src} + ${src2})",
                       [(set GPR:$dst, (PIC16Lo tglobaladdr:$src, imm:$src2 ))]>;
 
 // Move a Lo(TES) to W.
 def movlw_lo_2 : BitFormat<12, (outs GPR:$dst), (ins i8imm:$src, i8imm:$src2),
-                      "movlw LOW(${src}) + ${src2}",
+                      "movlw LOW(${src} + ${src2})",
                       [(set GPR:$dst, (PIC16Lo texternalsym:$src, imm:$src2 ))]>;
 
 // Move a Hi(TGA) to W.
 def movlw_hi_1 : BitFormat<12, (outs GPR:$dst), (ins i8imm:$src, i8imm:$src2),
-                      "movlw HIGH(${src}) + ${src2}",
+                      "movlw HIGH(${src} + ${src2})",
                       [(set GPR:$dst, (PIC16Hi tglobaladdr:$src, imm:$src2))]>;
 
 // Move a Hi(TES) to W.
 def movlw_hi_2 : BitFormat<12, (outs GPR:$dst), (ins i8imm:$src, i8imm:$src2),
-                      "movlw HIGH(${src}) + ${src2}",
+                      "movlw HIGH(${src} + ${src2})",
                       [(set GPR:$dst, (PIC16Hi texternalsym:$src, imm:$src2))]>;
 }
 
@@ -299,7 +301,7 @@ def store_indirect :
 // Direct load.
 // Input Operands are: ptrlo = GA, offset = offset, ptrhi = banksel.
 // Output: dst = W
-let mayLoad = 1 in
+let Defs = [STATUS], mayLoad = 1 in
 class MOVF_INSN<bits<6> OpCode, SDNode OpNodeSrc, SDNode Op>:
   ByteFormat<0, (outs GPR:$dst), 
              (ins i8imm:$offset, i8mem:$ptrlo, i8imm:$ptrhi),
@@ -375,8 +377,9 @@ def subfw_2: SUBFW<0, "subwf", subc>;
 let Uses = [STATUS] in
 def subfwb: SUBFW<0, "subwfb", sube>;  // With Borrow.
 
-def subfw_cc: SUBFW<0, "subwf", PIC16Subcc>;
 }
+let Defs = [STATUS], isTerminator = 1 in
+def subfw_cc: SUBFW<0, "subwf", PIC16Subcc>;
 
 // [F] -= W ; 
 let mayStore = 1 in
@@ -425,8 +428,9 @@ class SUBLW<bits<6> opcode, SDNode OpNode> :
 let Defs = [STATUS] in {
 def sublw_1 : SUBLW<0, sub>;
 def sublw_2 : SUBLW<0, subc>;
-def sublw_cc : SUBLW<0, PIC16Subcc>;
 }
+let Defs = [STATUS], isTerminator = 1 in 
+def sublw_cc : SUBLW<0, PIC16Subcc>;
 
 // Call instruction.
 let isCall = 1,
@@ -452,12 +456,13 @@ let isCall = 1,
             [(set GPR:$dest, (PIC16callw (PIC16Connect GPR:$func, PCLATHR:$pc)))]>;
 }
 
-let Uses = [STATUS] in
+let Uses = [STATUS], isBranch = 1, isTerminator = 1, hasDelaySlot = 0 in
 def pic16brcond: ControlFormat<0x0, (outs), (ins brtarget:$dst, CCOp:$cc),
                           "b$cc $dst",
                           [(PIC16Brcond bb:$dst, imm:$cc)]>;
 
 // Unconditional branch.
+let isBranch = 1, isTerminator = 1, hasDelaySlot = 0 in
 def br_uncond: ControlFormat<0x0, (outs), (ins brtarget:$dst),
                           "goto $dst",
                           [(br bb:$dst)]>;
@@ -488,8 +493,9 @@ def pagesel :
 
 
 // Return insn.
+let isTerminator = 1, isBarrier = 1, isReturn = 1 in
 def Return : 
-  ControlFormat<0, (outs), (ins), "return", [(ret)]>;
+  ControlFormat<0, (outs), (ins), "return", [(PIC16ret)]>;
 
 //===----------------------------------------------------------------------===//
 // PIC16 Replacment Patterns.