1 //===-- X86FoldTablesUtils.h ------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_SUPPORT_X86FOLDTABLESUTILS_H 10 #define LLVM_SUPPORT_X86FOLDTABLESUTILS_H 11 12 namespace llvm { 13 enum { 14 // Select which memory operand is being unfolded. 15 // (stored in bits 0 - 2) 16 TB_INDEX_0 = 0, 17 TB_INDEX_1 = 1, 18 TB_INDEX_2 = 2, 19 TB_INDEX_3 = 3, 20 TB_INDEX_4 = 4, 21 TB_INDEX_MASK = 0x7, 22 23 // Do not insert the reverse map (MemOp -> RegOp) into the table. 24 // This may be needed because there is a many -> one mapping. 25 TB_NO_REVERSE = 1 << 3, 26 27 // Do not insert the forward map (RegOp -> MemOp) into the table. 28 // This is needed for Native Client, which prohibits branch 29 // instructions from using a memory operand. 30 TB_NO_FORWARD = 1 << 4, 31 32 TB_FOLDED_LOAD = 1 << 5, 33 TB_FOLDED_STORE = 1 << 6, 34 TB_FOLDED_BCAST = 1 << 7, 35 36 // Minimum alignment required for load/store. 37 // Used for RegOp->MemOp conversion. Encoded as Log2(Align) 38 // (stored in bits 9 - 11) 39 TB_ALIGN_SHIFT = 8, 40 TB_ALIGN_1 = 0 << TB_ALIGN_SHIFT, 41 TB_ALIGN_16 = 4 << TB_ALIGN_SHIFT, 42 TB_ALIGN_32 = 5 << TB_ALIGN_SHIFT, 43 TB_ALIGN_64 = 6 << TB_ALIGN_SHIFT, 44 TB_ALIGN_MASK = 0x7 << TB_ALIGN_SHIFT, 45 46 // Broadcast type. 47 // (stored in bits 12 - 13) 48 TB_BCAST_TYPE_SHIFT = TB_ALIGN_SHIFT + 3, 49 TB_BCAST_D = 0 << TB_BCAST_TYPE_SHIFT, 50 TB_BCAST_Q = 1 << TB_BCAST_TYPE_SHIFT, 51 TB_BCAST_SS = 2 << TB_BCAST_TYPE_SHIFT, 52 TB_BCAST_SD = 3 << TB_BCAST_TYPE_SHIFT, 53 TB_BCAST_MASK = 0x3 << TB_BCAST_TYPE_SHIFT, 54 55 // Unused bits 14-15 56 }; 57 } // namespace llvm 58 #endif // LLVM_SUPPORT_X86FOLDTABLESUTILS_H 59