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[Hexagon] Add a target feature for memop generation

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llvm-svn: 332285
This commit is contained in:
Krzysztof Parzyszek 2018-05-14 20:09:07 +00:00
parent 7e2ce4c73e
commit a4467d89bc
5 changed files with 55 additions and 31 deletions
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25
lib/Target/Hexagon/Hexagon.td
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@ -48,6 +48,8 @@ def FeatureLongCalls: SubtargetFeature<"long-calls", "UseLongCalls", "true",
"Use constant-extended calls">;
def FeatureMemNoShuf: SubtargetFeature<"mem_noshuf", "HasMemNoShuf", "false",
"Supports mem_noshuf feature">;
def FeatureMemops: SubtargetFeature<"memops", "UseMemops", "true",
"Use memop instructions">;
def FeatureNVJ: SubtargetFeature<"nvj", "UseNewValueJumps", "true",
"Support for new-value jumps", [FeaturePackets]>;
def FeatureDuplex: SubtargetFeature<"duplex", "EnableDuplex", "true",
@ -59,7 +61,7 @@ def FeatureReservedR19: SubtargetFeature<"reserved-r19", "ReservedR19",
// Hexagon Instruction Predicate Definitions.
//===----------------------------------------------------------------------===//
def UseMEMOP : Predicate<"HST->useMemOps()">;
def UseMEMOPS : Predicate<"HST->useMemops()">;
def IEEERndNearV5T : Predicate<"HST->modeIEEERndNear()">;
def UseHVX64B : Predicate<"HST->useHVX64BOps()">,
AssemblerPredicate<"ExtensionHVX64B">;
@ -318,21 +320,24 @@ class Proc<string Name, SchedMachineModel Model,
: ProcessorModel<Name, Model, Features>;
def : Proc<"hexagonv4", HexagonModelV4,
[ArchV4, FeaturePackets, FeatureNVJ, FeatureDuplex]>;
[ArchV4,
FeatureDuplex, FeatureMemops, FeatureNVJ, FeaturePackets]>;
def : Proc<"hexagonv5", HexagonModelV4,
[ArchV4, ArchV5, FeaturePackets, FeatureNVJ, FeatureDuplex]>;
[ArchV4, ArchV5,
FeatureDuplex, FeatureMemops, FeatureNVJ, FeaturePackets]>;
def : Proc<"hexagonv55", HexagonModelV55,
[ArchV4, ArchV5, ArchV55, FeaturePackets, FeatureNVJ,
FeatureDuplex]>;
[ArchV4, ArchV5, ArchV55,
FeatureDuplex, FeatureMemops, FeatureNVJ, FeaturePackets]>;
def : Proc<"hexagonv60", HexagonModelV60,
[ArchV4, ArchV5, ArchV55, ArchV60, FeaturePackets, FeatureNVJ,
FeatureDuplex]>;
[ArchV4, ArchV5, ArchV55, ArchV60,
FeatureDuplex, FeatureMemops, FeatureNVJ, FeaturePackets]>;
def : Proc<"hexagonv62", HexagonModelV62,
[ArchV4, ArchV5, ArchV55, ArchV60, ArchV62, FeaturePackets,
FeatureNVJ, FeatureDuplex]>;
[ArchV4, ArchV5, ArchV55, ArchV60, ArchV62,
FeatureDuplex, FeatureMemops, FeatureNVJ, FeaturePackets]>;
def : Proc<"hexagonv65", HexagonModelV65,
[ArchV4, ArchV5, ArchV55, ArchV60, ArchV62, ArchV65,
FeatureMemNoShuf, FeaturePackets, FeatureNVJ, FeatureDuplex]>;
FeatureDuplex, FeatureMemNoShuf, FeatureMemops, FeatureNVJ,
FeaturePackets]>;
//===----------------------------------------------------------------------===//
// Declare the target which we are implementing

12
lib/Target/Hexagon/HexagonPatterns.td
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@ -2581,8 +2581,10 @@ multiclass Memopxr_add_pat<PatFrag Load, PatFrag Store, PatFrag ImmPred,
multiclass Memopxr_pat<PatFrag Load, PatFrag Store, PatFrag ImmPred,
SDNode Oper, InstHexagon MI> {
defm: Memopxr_base_pat <Load, Store, Oper, MI>;
defm: Memopxr_add_pat <Load, Store, ImmPred, Oper, MI>;
let Predicates = [UseMEMOPS] in {
defm: Memopxr_base_pat <Load, Store, Oper, MI>;
defm: Memopxr_add_pat <Load, Store, ImmPred, Oper, MI>;
}
}
let AddedComplexity = 200 in {
@ -2680,8 +2682,10 @@ multiclass Memopxi_add_pat<PatFrag Load, PatFrag Store, PatFrag ImmPred,
multiclass Memopxi_pat<PatFrag Load, PatFrag Store, PatFrag ImmPred,
SDNode Oper, PatFrag Arg, SDNodeXForm ArgMod,
InstHexagon MI> {
defm: Memopxi_base_pat <Load, Store, Oper, Arg, ArgMod, MI>;
defm: Memopxi_add_pat <Load, Store, ImmPred, Oper, Arg, ArgMod, MI>;
let Predicates = [UseMEMOPS] in {
defm: Memopxi_base_pat <Load, Store, Oper, Arg, ArgMod, MI>;
defm: Memopxi_add_pat <Load, Store, ImmPred, Oper, Arg, ArgMod, MI>;
}
}
let AddedComplexity = 220 in {

11
lib/Target/Hexagon/HexagonSubtarget.cpp
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@ -39,13 +39,6 @@ using namespace llvm;
#define GET_SUBTARGETINFO_TARGET_DESC
#include "HexagonGenSubtargetInfo.inc"
static cl::opt<bool> EnableMemOps("enable-hexagon-memops",
cl::Hidden, cl::ZeroOrMore, cl::ValueDisallowed, cl::init(true),
cl::desc("Generate V4 MEMOP in code generation for Hexagon target"));
static cl::opt<bool> DisableMemOps("disable-hexagon-memops",
cl::Hidden, cl::ZeroOrMore, cl::ValueDisallowed, cl::init(false),
cl::desc("Do not generate V4 MEMOP in code generation for Hexagon target"));
static cl::opt<bool> EnableIEEERndNear("enable-hexagon-ieee-rnd-near",
cl::Hidden, cl::ZeroOrMore, cl::init(false),
@ -61,9 +54,6 @@ static cl::opt<bool> EnableDotCurSched("enable-cur-sched",
cl::Hidden, cl::ZeroOrMore, cl::init(true),
cl::desc("Enable the scheduler to generate .cur"));
static cl::opt<bool> EnableVecFrwdSched("enable-evec-frwd-sched",
cl::Hidden, cl::ZeroOrMore, cl::init(true));
static cl::opt<bool> DisableHexagonMISched("disable-hexagon-misched",
cl::Hidden, cl::ZeroOrMore, cl::init(false),
cl::desc("Disable Hexagon MI Scheduling"));
@ -124,7 +114,6 @@ HexagonSubtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
UseHVX64BOps = false;
UseLongCalls = false;
UseMemOps = DisableMemOps ? false : EnableMemOps;
ModeIEEERndNear = EnableIEEERndNear;
UseBSBScheduling = hasV60TOps() && EnableBSBSched;

15
lib/Target/Hexagon/HexagonSubtarget.h
View File

@ -46,11 +46,14 @@ class Triple;
class HexagonSubtarget : public HexagonGenSubtargetInfo {
virtual void anchor();
bool UseMemOps, UseHVX64BOps, UseHVX128BOps;
bool UseLongCalls;
bool UseHVX64BOps = false;
bool UseHVX128BOps = false;
bool ModeIEEERndNear = false;
bool UseLongCalls = false;
bool UseMemops = false;
bool UsePackets = false;
bool UseNewValueJumps = false;
bool ModeIEEERndNear;
bool HasMemNoShuf = false;
bool EnableDuplex = false;
@ -119,7 +122,6 @@ public:
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
bool useMemOps() const { return UseMemOps; }
bool hasV5TOps() const {
return getHexagonArchVersion() >= Hexagon::ArchEnum::V5;
}
@ -150,13 +152,14 @@ public:
bool hasV65TOpsOnly() const {
return getHexagonArchVersion() == Hexagon::ArchEnum::V65;
}
bool useMemops() const { return UseMemops; }
bool usePackets() const { return UsePackets; }
bool useNewValueJumps() const { return UseNewValueJumps; }
bool modeIEEERndNear() const { return ModeIEEERndNear; }
bool useHVXOps() const { return HexagonHVXVersion > Hexagon::ArchEnum::V4; }
bool useHVX128BOps() const { return useHVXOps() && UseHVX128BOps; }
bool useHVX64BOps() const { return useHVXOps() && UseHVX64BOps; }
bool usePackets() const { return UsePackets; }
bool useNewValueJumps() const { return UseNewValueJumps; }
bool hasMemNoShuf() const { return HasMemNoShuf; }
bool hasReservedR19() const { return ReservedR19; }

23
test/CodeGen/Hexagon/feature-memops.ll Normal file
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@ -0,0 +1,23 @@
; RUN: llc -march=hexagon < %s | FileCheck %s
; CHECK-LABEL: enabled:
; CHECK: memw({{.*}}) += #1
define void @enabled(i32* %p) #0 {
%v0 = load i32, i32* %p
%v1 = add i32 %v0, 1
store i32 %v1, i32* %p
ret void
}
; CHECK-LABEL: disabled:
; CHECK-NOT: memw({{.*}}) += #1
define void @disabled(i32* %p) #1 {
%v0 = load i32, i32* %p
%v1 = add i32 %v0, 1
store i32 %v1, i32* %p
ret void
}
attributes #0 = { nounwind }
attributes #1 = { nounwind "target-features"="-memops" }