| //===- TargetGlobalISel.td - Common code for GlobalISel ----*- tablegen -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the target-independent interfaces used to support |
| // SelectionDAG instruction selection patterns (specified in |
| // TargetSelectionDAG.td) when generating GlobalISel instruction selectors. |
| // |
| // This is intended as a compatibility layer, to enable reuse of target |
| // descriptions written for SelectionDAG without requiring explicit GlobalISel |
| // support. It will eventually supersede SelectionDAG patterns. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Declare that a generic Instruction is 'equivalent' to an SDNode, that is, |
| // SelectionDAG patterns involving the SDNode can be transformed to match the |
| // Instruction instead. |
| class GINodeEquiv<Instruction i, SDNode node> { |
| Instruction I = i; |
| SDNode Node = node; |
| } |
| |
| // These are defined in the same order as the G_* instructions. |
| def : GINodeEquiv<G_ANYEXT, anyext>; |
| def : GINodeEquiv<G_SEXT, sext>; |
| def : GINodeEquiv<G_ZEXT, zext>; |
| def : GINodeEquiv<G_TRUNC, trunc>; |
| def : GINodeEquiv<G_BITCAST, bitconvert>; |
| // G_INTTOPTR - SelectionDAG has no equivalent. |
| // G_PTRTOINT - SelectionDAG has no equivalent. |
| // G_CONSTANT - Not needed since constants aren't operators. |
| // G_FCONSTANT - Not needed since constants aren't operators. |
| def : GINodeEquiv<G_ADD, add>; |
| def : GINodeEquiv<G_SUB, sub>; |
| def : GINodeEquiv<G_MUL, mul>; |
| def : GINodeEquiv<G_SDIV, sdiv>; |
| def : GINodeEquiv<G_UDIV, udiv>; |
| def : GINodeEquiv<G_SREM, srem>; |
| def : GINodeEquiv<G_UREM, urem>; |
| def : GINodeEquiv<G_AND, and>; |
| def : GINodeEquiv<G_OR, or>; |
| def : GINodeEquiv<G_XOR, xor>; |
| def : GINodeEquiv<G_SHL, shl>; |
| def : GINodeEquiv<G_LSHR, srl>; |
| def : GINodeEquiv<G_ASHR, sra>; |
| def : GINodeEquiv<G_SELECT, select>; |
| def : GINodeEquiv<G_FNEG, fneg>; |
| def : GINodeEquiv<G_FPEXT, fpextend>; |
| def : GINodeEquiv<G_FPTRUNC, ftrunc>; |
| def : GINodeEquiv<G_FPTOSI, fp_to_sint>; |
| def : GINodeEquiv<G_FPTOUI, fp_to_uint>; |
| def : GINodeEquiv<G_SITOFP, sint_to_fp>; |
| def : GINodeEquiv<G_UITOFP, uint_to_fp>; |
| def : GINodeEquiv<G_FADD, fadd>; |
| def : GINodeEquiv<G_FSUB, fsub>; |
| def : GINodeEquiv<G_FMUL, fmul>; |
| def : GINodeEquiv<G_FDIV, fdiv>; |
| def : GINodeEquiv<G_FREM, frem>; |
| def : GINodeEquiv<G_FPOW, fpow>; |
| def : GINodeEquiv<G_BR, br>; |
| |
| // Specifies the GlobalISel equivalents for SelectionDAG's ComplexPattern. |
| // Should be used on defs that subclass GIComplexOperandMatcher<>. |
| class GIComplexPatternEquiv<ComplexPattern seldag> { |
| ComplexPattern SelDAGEquivalent = seldag; |
| } |
