Current Path : /usr/local/go/src/cmd/compile/internal/ssa/_gen/ |
Current File : //usr/local/go/src/cmd/compile/internal/ssa/_gen/RISCV64latelower.rules |
// Copyright 2022 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Fold constant shift with extension. (SRAI [c] (MOVBreg x)) && c < 8 => (SRAI [56+c] (SLLI <typ.Int64> [56] x)) (SRAI [c] (MOVHreg x)) && c < 16 => (SRAI [48+c] (SLLI <typ.Int64> [48] x)) (SRAI [c] (MOVWreg x)) && c < 32 => (SRAI [32+c] (SLLI <typ.Int64> [32] x)) (SRLI [c] (MOVBUreg x)) && c < 8 => (SRLI [56+c] (SLLI <typ.UInt64> [56] x)) (SRLI [c] (MOVHUreg x)) && c < 16 => (SRLI [48+c] (SLLI <typ.UInt64> [48] x)) (SRLI [c] (MOVWUreg x)) && c < 32 => (SRLI [32+c] (SLLI <typ.UInt64> [32] x)) (SLLI [c] (MOVBUreg x)) && c <= 56 => (SRLI [56-c] (SLLI <typ.UInt64> [56] x)) (SLLI [c] (MOVHUreg x)) && c <= 48 => (SRLI [48-c] (SLLI <typ.UInt64> [48] x)) (SLLI [c] (MOVWUreg x)) && c <= 32 => (SRLI [32-c] (SLLI <typ.UInt64> [32] x)) // Shift by zero. (SRAI [0] x) => x (SRLI [0] x) => x (SLLI [0] x) => x