constants.go

     1  // asmcheck
     2  
     3  // Copyright 2023 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package codegen
     8  
     9  // A uint16 or sint16 constant shifted left.
    10  func shifted16BitConstants(out [64]uint64) {
    11  	// ppc64x: "MOVD\t[$]8193,", "SLD\t[$]27,"
    12  	out[0] = 0x0000010008000000
    13  	// ppc64x: "MOVD\t[$]-32767", "SLD\t[$]26,"
    14  	out[1] = 0xFFFFFE0004000000
    15  	// ppc64x: "MOVD\t[$]-1", "SLD\t[$]48,"
    16  	out[2] = 0xFFFF000000000000
    17  	// ppc64x: "MOVD\t[$]65535", "SLD\t[$]44,"
    18  	out[3] = 0x0FFFF00000000000
    19  }
    20  
    21  // A contiguous set of 1 bits, potentially wrapping.
    22  func contiguousMaskConstants(out [64]uint64) {
    23  	// ppc64x: "MOVD\t[$]-1", "RLDC\tR[0-9]+, [$]44, [$]63,"
    24  	out[0] = 0xFFFFF00000000001
    25  	// ppc64x: "MOVD\t[$]-1", "RLDC\tR[0-9]+, [$]43, [$]63,"
    26  	out[1] = 0xFFFFF80000000001
    27  	// ppc64x: "MOVD\t[$]-1", "RLDC\tR[0-9]+, [$]43, [$]4,"
    28  	out[2] = 0x0FFFF80000000000
    29  	// ppc64x/power8: "MOVD\t[$]-1", "RLDC\tR[0-9]+, [$]33, [$]63,"
    30  	// ppc64x/power9: "MOVD\t[$]-1", "RLDC\tR[0-9]+, [$]33, [$]63,"
    31  	// ppc64x/power10: "MOVD\t[$]-8589934591,"
    32  	out[3] = 0xFFFFFFFE00000001
    33  }
    34
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