diff options
Diffstat (limited to 'lib/Target/AArch64/AArch64SchedA57.td')
| -rw-r--r-- | lib/Target/AArch64/AArch64SchedA57.td | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/lib/Target/AArch64/AArch64SchedA57.td b/lib/Target/AArch64/AArch64SchedA57.td index 3ec4157..ca4457a 100644 --- a/lib/Target/AArch64/AArch64SchedA57.td +++ b/lib/Target/AArch64/AArch64SchedA57.td @@ -60,7 +60,12 @@ include "AArch64SchedA57WriteRes.td" // Cortex-A57. The Cortex-A57 types are directly associated with resources, so // defining the aliases precludes the need for mapping them using WriteRes. The // aliases are sufficient for creating a coarse, working model. As the model -// evolves, InstRWs will be used to override these SchedAliases. +// evolves, InstRWs will be used to override some of these SchedAliases. +// +// WARNING: Using SchedAliases is convenient and works well for latency and +// resource lookup for instructions. However, this creates an entry in +// AArch64WriteLatencyTable with a WriteResourceID of 0, breaking +// any SchedReadAdvance since the lookup will fail. def : SchedAlias<WriteImm, A57Write_1cyc_1I>; def : SchedAlias<WriteI, A57Write_1cyc_1I>; @@ -70,8 +75,8 @@ def : SchedAlias<WriteExtr, A57Write_1cyc_1I>; def : SchedAlias<WriteIS, A57Write_1cyc_1I>; def : SchedAlias<WriteID32, A57Write_19cyc_1M>; def : SchedAlias<WriteID64, A57Write_35cyc_1M>; -def : SchedAlias<WriteIM32, A57Write_3cyc_1M>; -def : SchedAlias<WriteIM64, A57Write_5cyc_1M>; +def : WriteRes<WriteIM32, [A57UnitM]> { let Latency = 3; } +def : WriteRes<WriteIM64, [A57UnitM]> { let Latency = 5; } def : SchedAlias<WriteBr, A57Write_1cyc_1B>; def : SchedAlias<WriteBrReg, A57Write_1cyc_1B>; def : SchedAlias<WriteLD, A57Write_4cyc_1L>; @@ -127,6 +132,15 @@ def : InstRW<[A57Write_1cyc_1B_1I], (instrs BL)>; def : InstRW<[A57Write_2cyc_1B_1I], (instrs BLR)>; +// Shifted Register with Shift == 0 +// ---------------------------------------------------------------------------- + +def A57WriteISReg : SchedWriteVariant<[ + SchedVar<RegShiftedPred, [WriteISReg]>, + SchedVar<NoSchedPred, [WriteI]>]>; +def : InstRW<[A57WriteISReg], (instregex ".*rs$")>; + + // Divide and Multiply Instructions // ----------------------------------------------------------------------------- |