1 //===- TargetGlobalISel.td - Common code for GlobalISel ----*- tablegen -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines the target-independent interfaces used to support 11 // SelectionDAG instruction selection patterns (specified in 12 // TargetSelectionDAG.td) when generating GlobalISel instruction selectors. 13 // 14 // This is intended as a compatibility layer, to enable reuse of target 15 // descriptions written for SelectionDAG without requiring explicit GlobalISel 16 // support. It will eventually supersede SelectionDAG patterns. 17 // 18 //===----------------------------------------------------------------------===// 19 20 // Declare that a generic Instruction is 'equivalent' to an SDNode, that is, 21 // SelectionDAG patterns involving the SDNode can be transformed to match the 22 // Instruction instead. 23 class GINodeEquiv<Instruction i, SDNode node> { 24 Instruction I = i; 25 SDNode Node = node; 26 } 27 28 // These are defined in the same order as the G_* instructions. 29 def : GINodeEquiv<G_ANYEXT, anyext>; 30 def : GINodeEquiv<G_SEXT, sext>; 31 def : GINodeEquiv<G_ZEXT, zext>; 32 def : GINodeEquiv<G_TRUNC, trunc>; 33 def : GINodeEquiv<G_BITCAST, bitconvert>; 34 // G_INTTOPTR - SelectionDAG has no equivalent. 35 // G_PTRTOINT - SelectionDAG has no equivalent. 36 // G_CONSTANT - Not needed since constants aren't operators. 37 // G_FCONSTANT - Not needed since constants aren't operators. 38 def : GINodeEquiv<G_ADD, add>; 39 def : GINodeEquiv<G_SUB, sub>; 40 def : GINodeEquiv<G_MUL, mul>; 41 def : GINodeEquiv<G_SDIV, sdiv>; 42 def : GINodeEquiv<G_UDIV, udiv>; 43 def : GINodeEquiv<G_SREM, srem>; 44 def : GINodeEquiv<G_UREM, urem>; 45 def : GINodeEquiv<G_AND, and>; 46 def : GINodeEquiv<G_OR, or>; 47 def : GINodeEquiv<G_XOR, xor>; 48 def : GINodeEquiv<G_SHL, shl>; 49 def : GINodeEquiv<G_LSHR, srl>; 50 def : GINodeEquiv<G_ASHR, sra>; 51 def : GINodeEquiv<G_SELECT, select>; 52 def : GINodeEquiv<G_FNEG, fneg>; 53 def : GINodeEquiv<G_FPEXT, fpextend>; 54 def : GINodeEquiv<G_FPTRUNC, ftrunc>; 55 def : GINodeEquiv<G_FPTOSI, fp_to_sint>; 56 def : GINodeEquiv<G_FPTOUI, fp_to_uint>; 57 def : GINodeEquiv<G_SITOFP, sint_to_fp>; 58 def : GINodeEquiv<G_UITOFP, uint_to_fp>; 59 def : GINodeEquiv<G_FADD, fadd>; 60 def : GINodeEquiv<G_FSUB, fsub>; 61 def : GINodeEquiv<G_FMUL, fmul>; 62 def : GINodeEquiv<G_FDIV, fdiv>; 63 def : GINodeEquiv<G_FREM, frem>; 64 def : GINodeEquiv<G_FPOW, fpow>; 65 def : GINodeEquiv<G_BR, br>; 66 67 // Specifies the GlobalISel equivalents for SelectionDAG's ComplexPattern. 68 // Should be used on defs that subclass GIComplexOperandMatcher<>. 69 class GIComplexPatternEquiv<ComplexPattern seldag> { 70 ComplexPattern SelDAGEquivalent = seldag; 71 } 72
