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| //===-- PPCInstrHTM.td - The PowerPC Hardware Transactional Memory -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file describes the Hardware Transactional Memory extension to the
// PowerPC instruction set.
//
//===----------------------------------------------------------------------===//
def HasHTM : Predicate<"PPCSubTarget->hasHTM()">;
def HTM_get_imm : SDNodeXForm<imm, [{
return getI32Imm (N->getZExtValue(), SDLoc(N));
}]>;
let hasSideEffects = 1 in {
def TCHECK_RET : PPCCustomInserterPseudo<(outs gprc:$out), (ins), "#TCHECK_RET", []>;
def TBEGIN_RET : PPCCustomInserterPseudo<(outs gprc:$out), (ins u1imm:$R), "#TBEGIN_RET", []>;
}
let Predicates = [HasHTM] in {
let Defs = [CR0] in {
def TBEGIN : XForm_htm0 <31, 654,
(outs), (ins u1imm:$R), "tbegin. $R", IIC_SprMTSPR, []>;
def TEND : XForm_htm1 <31, 686,
(outs), (ins u1imm:$A), "tend. $A", IIC_SprMTSPR, []>;
def TABORT : XForm_base_r3xo <31, 910,
(outs), (ins gprc:$A), "tabort. $A", IIC_SprMTSPR,
[]>, isDOT {
let RST = 0;
let B = 0;
}
def TABORTWC : XForm_base_r3xo <31, 782,
(outs), (ins u5imm:$RTS, gprc:$A, gprc:$B),
"tabortwc. $RTS, $A, $B", IIC_SprMTSPR, []>,
isDOT;
def TABORTWCI : XForm_base_r3xo <31, 846,
(outs), (ins u5imm:$RTS, gprc:$A, u5imm:$B),
"tabortwci. $RTS, $A, $B", IIC_SprMTSPR, []>,
isDOT;
def TABORTDC : XForm_base_r3xo <31, 814,
(outs), (ins u5imm:$RTS, gprc:$A, gprc:$B),
"tabortdc. $RTS, $A, $B", IIC_SprMTSPR, []>,
isDOT;
def TABORTDCI : XForm_base_r3xo <31, 878,
(outs), (ins u5imm:$RTS, gprc:$A, u5imm:$B),
"tabortdci. $RTS, $A, $B", IIC_SprMTSPR, []>,
isDOT;
def TSR : XForm_htm2 <31, 750,
(outs), (ins u1imm:$L), "tsr. $L", IIC_SprMTSPR, []>,
isDOT;
def TRECLAIM : XForm_base_r3xo <31, 942,
(outs), (ins gprc:$A), "treclaim. $A",
IIC_SprMTSPR, []>,
isDOT {
let RST = 0;
let B = 0;
}
def TRECHKPT : XForm_base_r3xo <31, 1006,
(outs), (ins), "trechkpt.", IIC_SprMTSPR, []>,
isDOT {
let RST = 0;
let A = 0;
let B = 0;
}
}
def TCHECK : XForm_htm3 <31, 718,
(outs crrc:$BF), (ins), "tcheck $BF", IIC_SprMTSPR, []>;
// Builtins
// All HTM instructions, with the exception of tcheck, set CR0 with the
// value of the MSR Transaction State (TS) bits that exist before the
// instruction is executed. For tbegin., the EQ bit in CR0 can be used
// to determine whether the transaction was successfully started (0) or
// failed (1). We use an XORI pattern to 'flip' the bit to match the
// tbegin builtin API which defines a return value of 1 as success.
def : Pat<(int_ppc_tbegin i32:$R),
(XORI (TBEGIN_RET(HTM_get_imm imm:$R)), 1)>;
def : Pat<(int_ppc_tend i32:$R),
(TEND (HTM_get_imm imm:$R))>;
def : Pat<(int_ppc_tabort i32:$R),
(TABORT $R)>;
def : Pat<(int_ppc_tabortwc i32:$TO, i32:$RA, i32:$RB),
(TABORTWC (HTM_get_imm imm:$TO), $RA, $RB)>;
def : Pat<(int_ppc_tabortwci i32:$TO, i32:$RA, i32:$SI),
(TABORTWCI (HTM_get_imm imm:$TO), $RA, (HTM_get_imm imm:$SI))>;
def : Pat<(int_ppc_tabortdc i32:$TO, i32:$RA, i32:$RB),
(TABORTDC (HTM_get_imm imm:$TO), $RA, $RB)>;
def : Pat<(int_ppc_tabortdci i32:$TO, i32:$RA, i32:$SI),
(TABORTDCI (HTM_get_imm imm:$TO), $RA, (HTM_get_imm imm:$SI))>;
def : Pat<(int_ppc_tcheck),
(TCHECK_RET)>;
def : Pat<(int_ppc_treclaim i32:$RA),
(TRECLAIM $RA)>;
def : Pat<(int_ppc_trechkpt),
(TRECHKPT)>;
def : Pat<(int_ppc_tsr i32:$L),
(TSR (HTM_get_imm imm:$L))>;
def : Pat<(int_ppc_get_texasr),
(MFSPR8 130)>;
def : Pat<(int_ppc_get_texasru),
(MFSPR8 131)>;
def : Pat<(int_ppc_get_tfhar),
(MFSPR8 128)>;
def : Pat<(int_ppc_get_tfiar),
(MFSPR8 129)>;
def : Pat<(int_ppc_set_texasr i64:$V),
(MTSPR8 130, $V)>;
def : Pat<(int_ppc_set_texasru i64:$V),
(MTSPR8 131, $V)>;
def : Pat<(int_ppc_set_tfhar i64:$V),
(MTSPR8 128, $V)>;
def : Pat<(int_ppc_set_tfiar i64:$V),
(MTSPR8 129, $V)>;
// Extended mnemonics
def : Pat<(int_ppc_tendall),
(TEND 1)>;
def : Pat<(int_ppc_tresume),
(TSR 1)>;
def : Pat<(int_ppc_tsuspend),
(TSR 0)>;
def : Pat<(i64 (int_ppc_ttest)),
(RLDICL (i64 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
(TABORTWCI 0, (LI 0), 0), sub_32)),
36, 28)>;
} // [HasHTM]
|