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Add more PPC floating-point conversion instructions

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The P7 and A2 have additional floating-point conversion instructions which
allow a direct two-instruction sequence (plus load/store) to convert from all
combinations (signed/unsigned i32/i64) <--> (float/double) (on previous cores,
only some combinations were directly available).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178480 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2013-04-01 17:52:07 +00:00
parent a1f4290ac9
commit 4647919784
12 changed files with 325 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
lib/Target/PowerPC/PPC.td
View File

@ -63,6 +63,8 @@ def FeatureLFIWAX : SubtargetFeature<"lfiwax","HasLFIWAX", "true",
"Enable the lfiwax instruction">;
def FeatureFPRND : SubtargetFeature<"fprnd", "HasFPRND", "true",
"Enable the fri[mnpz] instructions">;
def FeatureFPCVT : SubtargetFeature<"fpcvt", "HasFPCVT", "true",
"Enable fc[ft]* (unsigned and single-precision) and lfiwzx instructions">;
def FeatureISEL : SubtargetFeature<"isel","HasISEL", "true",
"Enable the isel instruction">;
def FeaturePOPCNTD : SubtargetFeature<"popcntd","HasPOPCNTD", "true",
@ -79,10 +81,8 @@ def FeatureQPX : SubtargetFeature<"qpx","HasQPX", "true",
//
// CMPB p6, p6x, p7 cmpb
// DFP p6, p6x, p7 decimal floating-point instructions
// FLT_CVT p7 fcfids, fcfidu, fcfidus, fcfiduz, fctiwuz
// FRE p5 through p7 fre (vs. fres, available since p3)
// FRSQRTES p5 through p7 frsqrtes (vs. frsqrte, available since p3)
// LFIWZX p7 lfiwzx
// POPCNTB p5 through p7 popcntb and related instructions
// RECIP_PREC p6, p6x, p7 higher precision reciprocal estimates
// VSX p7 vector-scalar instruction set
@ -135,14 +135,15 @@ def : ProcessorModel<"e5500", PPCE5500Model,
def : Processor<"a2", PPCA2Itineraries,
[DirectiveA2, FeatureBookE, FeatureMFOCRF,
FeatureFSqrt, FeatureSTFIWX, FeatureLFIWAX,
FeatureFPRND, FeatureISEL, FeaturePOPCNTD,
FeatureLDBRX, Feature64Bit /*, Feature64BitRegs */]>;
FeatureFPRND, FeatureFPCVT, FeatureISEL,
FeaturePOPCNTD, FeatureLDBRX, Feature64Bit
/*, Feature64BitRegs */]>;
def : Processor<"a2q", PPCA2Itineraries,
[DirectiveA2, FeatureBookE, FeatureMFOCRF,
FeatureFSqrt, FeatureSTFIWX, FeatureLFIWAX,
FeatureFPRND, FeatureISEL, FeaturePOPCNTD,
FeatureLDBRX, Feature64Bit /*, Feature64BitRegs */,
FeatureQPX]>;
FeatureFPRND, FeatureFPCVT, FeatureISEL,
FeaturePOPCNTD, FeatureLDBRX, Feature64Bit
/*, Feature64BitRegs */, FeatureQPX]>;
def : Processor<"pwr3", G5Itineraries,
[DirectivePwr3, FeatureAltivec, FeatureMFOCRF,
FeatureSTFIWX, Feature64Bit]>;
@ -168,9 +169,9 @@ def : Processor<"pwr6x", G5Itineraries,
def : Processor<"pwr7", G5Itineraries,
[DirectivePwr7, FeatureAltivec,
FeatureMFOCRF, FeatureFSqrt, FeatureSTFIWX,
FeatureLFIWAX, FeatureFPRND, FeatureISEL,
FeaturePOPCNTD, FeatureLDBRX, Feature64Bit
/*, Feature64BitRegs */]>;
FeatureLFIWAX, FeatureFPRND, FeatureFPCVT,
FeatureISEL, FeaturePOPCNTD, FeatureLDBRX,
Feature64Bit /*, Feature64BitRegs */]>;
def : Processor<"ppc", G3Itineraries, [Directive32]>;
def : Processor<"ppc64", G5Itineraries,
[Directive64, FeatureAltivec,

96
lib/Target/PowerPC/PPCISelLowering.cpp
View File

@ -326,13 +326,28 @@ PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM)
// We cannot do this with Promote because i64 is not a legal type.
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Custom);
if (Subtarget->isPPC64())
if (PPCSubTarget.hasLFIWAX() || Subtarget->isPPC64())
setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
} else {
// PowerPC does not have FP_TO_UINT on 32-bit implementations.
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
}
// With the instructions enabled under FPCVT, we can do everything.
if (PPCSubTarget.hasFPCVT()) {
if (Subtarget->has64BitSupport()) {
setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
setOperationAction(ISD::FP_TO_UINT, MVT::i64, Custom);
setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::i64, Custom);
}
setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Custom);
setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::i32, Custom);
}
if (Subtarget->use64BitRegs()) {
// 64-bit PowerPC implementations can support i64 types directly
addRegisterClass(MVT::i64, &PPC::G8RCRegClass);
@ -4716,37 +4731,72 @@ SDValue PPCTargetLowering::LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG,
default: llvm_unreachable("Unhandled FP_TO_INT type in custom expander!");
case MVT::i32:
Tmp = DAG.getNode(Op.getOpcode()==ISD::FP_TO_SINT ? PPCISD::FCTIWZ :
PPCISD::FCTIDZ,
(PPCSubTarget.hasFPCVT() ? PPCISD::FCTIWUZ :
PPCISD::FCTIDZ),
dl, MVT::f64, Src);
break;
case MVT::i64:
Tmp = DAG.getNode(PPCISD::FCTIDZ, dl, MVT::f64, Src);
assert((Op.getOpcode() == ISD::SINT_TO_FP || PPCSubTarget.hasFPCVT()) &&
"i64 UINT_TO_FP is supported only with FPCVT");
Tmp = DAG.getNode(Op.getOpcode()==ISD::FP_TO_SINT ? PPCISD::FCTIDZ :
PPCISD::FCTIDUZ,
dl, MVT::f64, Src);
break;
}
// Convert the FP value to an int value through memory.
SDValue FIPtr = DAG.CreateStackTemporary(MVT::f64);
bool i32Stack = Op.getValueType() == MVT::i32 && PPCSubTarget.hasSTFIWX() &&
(Op.getOpcode() == ISD::FP_TO_SINT || PPCSubTarget.hasFPCVT());
SDValue FIPtr = DAG.CreateStackTemporary(i32Stack ? MVT::i32 : MVT::f64);
int FI = cast<FrameIndexSDNode>(FIPtr)->getIndex();
MachinePointerInfo MPI = MachinePointerInfo::getFixedStack(FI);
// Emit a store to the stack slot.
SDValue Chain = DAG.getStore(DAG.getEntryNode(), dl, Tmp, FIPtr,
MachinePointerInfo(), false, false, 0);
SDValue Chain;
if (i32Stack) {
MachineFunction &MF = DAG.getMachineFunction();
MachineMemOperand *MMO =
MF.getMachineMemOperand(MPI, MachineMemOperand::MOStore, 4, 4);
SDValue Ops[] = { DAG.getEntryNode(), Tmp, FIPtr };
Chain = DAG.getMemIntrinsicNode(PPCISD::STFIWX, dl,
DAG.getVTList(MVT::Other), Ops, array_lengthof(Ops),
MVT::i32, MMO);
} else
Chain = DAG.getStore(DAG.getEntryNode(), dl, Tmp, FIPtr,
MPI, false, false, 0);
// Result is a load from the stack slot. If loading 4 bytes, make sure to
// add in a bias.
if (Op.getValueType() == MVT::i32)
if (Op.getValueType() == MVT::i32 && !i32Stack) {
FIPtr = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr,
DAG.getConstant(4, FIPtr.getValueType()));
return DAG.getLoad(Op.getValueType(), dl, Chain, FIPtr, MachinePointerInfo(),
MPI = MachinePointerInfo();
}
return DAG.getLoad(Op.getValueType(), dl, Chain, FIPtr, MPI,
false, false, false, 0);
}
SDValue PPCTargetLowering::LowerSINT_TO_FP(SDValue Op,
SDValue PPCTargetLowering::LowerINT_TO_FP(SDValue Op,
SelectionDAG &DAG) const {
DebugLoc dl = Op.getDebugLoc();
// Don't handle ppc_fp128 here; let it be lowered to a libcall.
if (Op.getValueType() != MVT::f32 && Op.getValueType() != MVT::f64)
return SDValue();
assert((Op.getOpcode() == ISD::SINT_TO_FP || PPCSubTarget.hasFPCVT()) &&
"UINT_TO_FP is supported only with FPCVT");
// If we have FCFIDS, then use it when converting to single-precision.
// Otherwise, convert to double-prcision and then round.
unsigned FCFOp = (PPCSubTarget.hasFPCVT() && Op.getValueType() == MVT::f32) ?
(Op.getOpcode() == ISD::UINT_TO_FP ?
PPCISD::FCFIDUS : PPCISD::FCFIDS) :
(Op.getOpcode() == ISD::UINT_TO_FP ?
PPCISD::FCFIDU : PPCISD::FCFID);
MVT FCFTy = (PPCSubTarget.hasFPCVT() && Op.getValueType() == MVT::f32) ?
MVT::f32 : MVT::f64;
if (Op.getOperand(0).getValueType() == MVT::i64) {
SDValue SINT = Op.getOperand(0);
// When converting to single-precision, we actually need to convert
@ -4760,6 +4810,7 @@ SDValue PPCTargetLowering::LowerSINT_TO_FP(SDValue Op,
// However, if -enable-unsafe-fp-math is in effect, accept double
// rounding to avoid the extra overhead.
if (Op.getValueType() == MVT::f32 &&
!PPCSubTarget.hasFPCVT() &&
!DAG.getTarget().Options.UnsafeFPMath) {
// Twiddle input to make sure the low 11 bits are zero. (If this
@ -4793,16 +4844,18 @@ SDValue PPCTargetLowering::LowerSINT_TO_FP(SDValue Op,
SINT = DAG.getNode(ISD::SELECT, dl, MVT::i64, Cond, Round, SINT);
}
SDValue Bits = DAG.getNode(ISD::BITCAST, dl, MVT::f64, SINT);
SDValue FP = DAG.getNode(PPCISD::FCFID, dl, MVT::f64, Bits);
if (Op.getValueType() == MVT::f32)
SDValue FP = DAG.getNode(FCFOp, dl, FCFTy, Bits);
if (Op.getValueType() == MVT::f32 && !PPCSubTarget.hasFPCVT())
FP = DAG.getNode(ISD::FP_ROUND, dl,
MVT::f32, FP, DAG.getIntPtrConstant(0));
return FP;
}
assert(Op.getOperand(0).getValueType() == MVT::i32 &&
"Unhandled SINT_TO_FP type in custom expander!");
"Unhandled INT_TO_FP type in custom expander!");
// Since we only generate this in 64-bit mode, we can take advantage of
// 64-bit registers. In particular, sign extend the input value into the
// 64-bit register with extsw, store the WHOLE 64-bit value into the stack
@ -4812,7 +4865,7 @@ SDValue PPCTargetLowering::LowerSINT_TO_FP(SDValue Op,
EVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
SDValue Ld;
if (PPCSubTarget.hasLFIWAX()) {
if (PPCSubTarget.hasLFIWAX() || PPCSubTarget.hasFPCVT()) {
int FrameIdx = FrameInfo->CreateStackObject(4, 4, false);
SDValue FIdx = DAG.getFrameIndex(FrameIdx, PtrVT);
@ -4826,10 +4879,14 @@ SDValue PPCTargetLowering::LowerSINT_TO_FP(SDValue Op,
MF.getMachineMemOperand(MachinePointerInfo::getFixedStack(FrameIdx),
MachineMemOperand::MOLoad, 4, 4);
SDValue Ops[] = { Store, FIdx };
Ld = DAG.getMemIntrinsicNode(PPCISD::LFIWAX, dl,
DAG.getVTList(MVT::f64, MVT::Other), Ops, 2,
MVT::i32, MMO);
Ld = DAG.getMemIntrinsicNode(Op.getOpcode() == ISD::UINT_TO_FP ?
PPCISD::LFIWZX : PPCISD::LFIWAX,
dl, DAG.getVTList(MVT::f64, MVT::Other),
Ops, 2, MVT::i32, MMO);
} else {
assert(PPCSubTarget.isPPC64() &&
"i32->FP without LFIWAX supported only on PPC64");
int FrameIdx = FrameInfo->CreateStackObject(8, 8, false);
SDValue FIdx = DAG.getFrameIndex(FrameIdx, PtrVT);
@ -4848,8 +4905,8 @@ SDValue PPCTargetLowering::LowerSINT_TO_FP(SDValue Op,
}
// FCFID it and return it.
SDValue FP = DAG.getNode(PPCISD::FCFID, dl, MVT::f64, Ld);
if (Op.getValueType() == MVT::f32)
SDValue FP = DAG.getNode(FCFOp, dl, FCFTy, Ld);
if (Op.getValueType() == MVT::f32 && !PPCSubTarget.hasFPCVT())
FP = DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, FP, DAG.getIntPtrConstant(0));
return FP;
}
@ -5651,7 +5708,8 @@ SDValue PPCTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const {
case ISD::FP_TO_UINT:
case ISD::FP_TO_SINT: return LowerFP_TO_INT(Op, DAG,
Op.getDebugLoc());
case ISD::SINT_TO_FP: return LowerSINT_TO_FP(Op, DAG);
case ISD::UINT_TO_FP:
case ISD::SINT_TO_FP: return LowerINT_TO_FP(Op, DAG);
case ISD::FLT_ROUNDS_: return LowerFLT_ROUNDS_(Op, DAG);
// Lower 64-bit shifts.

15
lib/Target/PowerPC/PPCISelLowering.h
View File

@ -36,11 +36,19 @@ namespace llvm {
/// was temporarily in the f64 operand.
FCFID,
/// Newer FCFID[US] integer-to-floating-point conversion instructions for
/// unsigned integers and single-precision outputs.
FCFIDU, FCFIDS, FCFIDUS,
/// FCTI[D,W]Z - The FCTIDZ and FCTIWZ instructions, taking an f32 or f64
/// operand, producing an f64 value containing the integer representation
/// of that FP value.
FCTIDZ, FCTIWZ,
/// Newer FCTI[D,W]UZ floating-point-to-integer conversion instructions for
/// unsigned integers.
FCTIDUZ, FCTIWUZ,
// VMADDFP, VNMSUBFP - The VMADDFP and VNMSUBFP instructions, taking
// three v4f32 operands and producing a v4f32 result.
VMADDFP, VNMSUBFP,
@ -247,6 +255,11 @@ namespace llvm {
/// destination 64-bit register.
LFIWAX,
/// GPRC, CHAIN = LFIWZX CHAIN, Ptr - This is a floating-point
/// load which zero-extends from a 32-bit integer value into the
/// destination 64-bit register.
LFIWZX,
/// G8RC = ADDIS_TOC_HA %X2, Symbol - For medium and large code model,
/// produces an ADDIS8 instruction that adds the TOC base register to
/// sym@toc@ha.
@ -494,7 +507,7 @@ namespace llvm {
const PPCSubtarget &Subtarget) const;
SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG, DebugLoc dl) const;
SDValue LowerSINT_TO_FP(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerINT_TO_FP(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerFLT_ROUNDS_(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerSHL_PARTS(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerSRL_PARTS(SDValue Op, SelectionDAG &DAG) const;

16
lib/Target/PowerPC/PPCInstr64Bit.td
View File

@ -859,6 +859,22 @@ def FCFID : XForm_26<63, 846, (outs F8RC:$frD), (ins F8RC:$frB),
def FCTIDZ : XForm_26<63, 815, (outs F8RC:$frD), (ins F8RC:$frB),
"fctidz $frD, $frB", FPGeneral,
[(set f64:$frD, (PPCfctidz f64:$frB))]>, isPPC64;
def FCFIDU : XForm_26<63, 974, (outs F8RC:$frD), (ins F8RC:$frB),
"fcfidu $frD, $frB", FPGeneral,
[(set f64:$frD, (PPCfcfidu f64:$frB))]>, isPPC64;
def FCFIDS : XForm_26<59, 846, (outs F4RC:$frD), (ins F8RC:$frB),
"fcfids $frD, $frB", FPGeneral,
[(set f32:$frD, (PPCfcfids f64:$frB))]>, isPPC64;
def FCFIDUS : XForm_26<59, 974, (outs F4RC:$frD), (ins F8RC:$frB),
"fcfidus $frD, $frB", FPGeneral,
[(set f32:$frD, (PPCfcfidus f64:$frB))]>, isPPC64;
def FCTIDUZ : XForm_26<63, 943, (outs F8RC:$frD), (ins F8RC:$frB),
"fctiduz $frD, $frB", FPGeneral,
[(set f64:$frD, (PPCfctiduz f64:$frB))]>, isPPC64;
def FCTIWUZ : XForm_26<63, 143, (outs F8RC:$frD), (ins F8RC:$frB),
"fctiwuz $frD, $frB", FPGeneral,
[(set f64:$frD, (PPCfctiwuz f64:$frB))]>, isPPC64;
}

16
lib/Target/PowerPC/PPCInstrInfo.td
View File

@ -20,7 +20,7 @@ include "PPCInstrFormats.td"
def SDT_PPCstfiwx : SDTypeProfile<0, 2, [ // stfiwx
SDTCisVT<0, f64>, SDTCisPtrTy<1>
]>;
def SDT_PPClfiwax : SDTypeProfile<1, 1, [ // lfiwax
def SDT_PPClfiwx : SDTypeProfile<1, 1, [ // lfiw[az]x
SDTCisVT<0, f64>, SDTCisPtrTy<1>
]>;
@ -62,12 +62,19 @@ def SDT_PPCTC_ret : SDTypeProfile<0, 2, [
// PowerPC specific DAG Nodes.
//
def PPCfcfid : SDNode<"PPCISD::FCFID" , SDTFPUnaryOp, []>;
def PPCfcfid : SDNode<"PPCISD::FCFID", SDTFPUnaryOp, []>;
def PPCfcfidu : SDNode<"PPCISD::FCFIDU", SDTFPUnaryOp, []>;
def PPCfcfids : SDNode<"PPCISD::FCFIDS", SDTFPRoundOp, []>;
def PPCfcfidus: SDNode<"PPCISD::FCFIDUS", SDTFPRoundOp, []>;
def PPCfctidz : SDNode<"PPCISD::FCTIDZ", SDTFPUnaryOp, []>;
def PPCfctiwz : SDNode<"PPCISD::FCTIWZ", SDTFPUnaryOp, []>;
def PPCfctiduz: SDNode<"PPCISD::FCTIDUZ",SDTFPUnaryOp, []>;
def PPCfctiwuz: SDNode<"PPCISD::FCTIWUZ",SDTFPUnaryOp, []>;
def PPCstfiwx : SDNode<"PPCISD::STFIWX", SDT_PPCstfiwx,
[SDNPHasChain, SDNPMayStore]>;
def PPClfiwax : SDNode<"PPCISD::LFIWAX", SDT_PPClfiwax,
def PPClfiwax : SDNode<"PPCISD::LFIWAX", SDT_PPClfiwx,
[SDNPHasChain, SDNPMayLoad]>;
def PPClfiwzx : SDNode<"PPCISD::LFIWZX", SDT_PPClfiwx,
[SDNPHasChain, SDNPMayLoad]>;
// Extract FPSCR (not modeled at the DAG level).
@ -853,6 +860,9 @@ def LFDX : XForm_25<31, 599, (outs F8RC:$frD), (ins memrr:$src),
def LFIWAX : XForm_25<31, 855, (outs F8RC:$frD), (ins memrr:$src),
"lfiwax $frD, $src", LdStLFD,
[(set f64:$frD, (PPClfiwax xoaddr:$src))]>;
def LFIWZX : XForm_25<31, 887, (outs F8RC:$frD), (ins memrr:$src),
"lfiwzx $frD, $src", LdStLFD,
[(set f64:$frD, (PPClfiwzx xoaddr:$src))]>;
}
//===----------------------------------------------------------------------===//

1
lib/Target/PowerPC/PPCSubtarget.cpp
View File

@ -41,6 +41,7 @@ PPCSubtarget::PPCSubtarget(const std::string &TT, const std::string &CPU,
, HasSTFIWX(false)
, HasLFIWAX(false)
, HasFPRND(false)
, HasFPCVT(false)
, HasISEL(false)
, HasPOPCNTD(false)
, HasLDBRX(false)

2
lib/Target/PowerPC/PPCSubtarget.h
View File

@ -80,6 +80,7 @@ protected:
bool HasSTFIWX;
bool HasLFIWAX;
bool HasFPRND;
bool HasFPCVT;
bool HasISEL;
bool HasPOPCNTD;
bool HasLDBRX;
@ -161,6 +162,7 @@ public:
bool hasSTFIWX() const { return HasSTFIWX; }
bool hasLFIWAX() const { return HasLFIWAX; }
bool hasFPRND() const { return HasFPRND; }
bool hasFPCVT() const { return HasFPCVT; }
bool hasAltivec() const { return HasAltivec; }
bool hasQPX() const { return HasQPX; }
bool hasMFOCRF() const { return HasMFOCRF; }

92
test/CodeGen/PowerPC/float-to-int.ll Normal file
View File

@ -0,0 +1,92 @@
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=a2 | FileCheck %s
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
define i64 @foo(float %a) nounwind {
%x = fptosi float %a to i64
ret i64 %x
; CHECK: @foo
; CHECK: fctidz [[REG:[0-9]+]], 1
; CHECK: stfd [[REG]],
; CHECK: ld 3,
; CHECK: blr
}
define i64 @foo2(double %a) nounwind {
%x = fptosi double %a to i64
ret i64 %x
; CHECK: @foo2
; CHECK: fctidz [[REG:[0-9]+]], 1
; CHECK: stfd [[REG]],
; CHECK: ld 3,
; CHECK: blr
}
define i64 @foo3(float %a) nounwind {
%x = fptoui float %a to i64
ret i64 %x
; CHECK: @foo3
; CHECK: fctiduz [[REG:[0-9]+]], 1
; CHECK: stfd [[REG]],
; CHECK: ld 3,
; CHECK: blr
}
define i64 @foo4(double %a) nounwind {
%x = fptoui double %a to i64
ret i64 %x
; CHECK: @foo4
; CHECK: fctiduz [[REG:[0-9]+]], 1
; CHECK: stfd [[REG]],
; CHECK: ld 3,
; CHECK: blr
}
define i32 @goo(float %a) nounwind {
%x = fptosi float %a to i32
ret i32 %x
; CHECK: @goo
; CHECK: fctiwz [[REG:[0-9]+]], 1
; CHECK: stfiwx [[REG]],
; CHECK: lwz 3,
; CHECK: blr
}
define i32 @goo2(double %a) nounwind {
%x = fptosi double %a to i32
ret i32 %x
; CHECK: @goo2
; CHECK: fctiwz [[REG:[0-9]+]], 1
; CHECK: stfiwx [[REG]],
; CHECK: lwz 3,
; CHECK: blr
}
define i32 @goo3(float %a) nounwind {
%x = fptoui float %a to i32
ret i32 %x
; CHECK: @goo3
; CHECK: fctiwuz [[REG:[0-9]+]], 1
; CHECK: stfiwx [[REG]],
; CHECK: lwz 3,
; CHECK: blr
}
define i32 @goo4(double %a) nounwind {
%x = fptoui double %a to i32
ret i32 %x
; CHECK: @goo4
; CHECK: fctiwuz [[REG:[0-9]+]], 1
; CHECK: stfiwx [[REG]],
; CHECK: lwz 3,
; CHECK: blr
}

41
test/CodeGen/PowerPC/i32-to-float.ll
View File

@ -1,4 +1,5 @@
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=g5 | FileCheck %s
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr6 | FileCheck -check-prefix=CHECK-PWR6 %s
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=a2 | FileCheck -check-prefix=CHECK-A2 %s
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
@ -16,11 +17,17 @@ entry:
; CHECK: frsp 1, [[REG3]]
; CHECK: blr
; CHECK-PWR6: @foo
; CHECK-PWR6: stw 3,
; CHECK-PWR6: lfiwax [[REG:[0-9]+]],
; CHECK-PWR6: fcfid [[REG2:[0-9]+]], [[REG]]
; CHECK-PWR6: frsp 1, [[REG2]]
; CHECK-PWR6: blr
; CHECK-A2: @foo
; CHECK-A2: stw 3,
; CHECK-A2: lfiwax [[REG:[0-9]+]],
; CHECK-A2: fcfid [[REG2:[0-9]+]], [[REG]]
; CHECK-A2: frsp 1, [[REG2]]
; CHECK-A2: fcfids 1, [[REG]]
; CHECK-A2: blr
}
@ -36,6 +43,12 @@ entry:
; CHECK: fcfid 1, [[REG2]]
; CHECK: blr
; CHECK-PWR6: @goo
; CHECK-PWR6: stw 3,
; CHECK-PWR6: lfiwax [[REG:[0-9]+]],
; CHECK-PWR6: fcfid 1, [[REG]]
; CHECK-PWR6: blr
; CHECK-A2: @goo
; CHECK-A2: stw 3,
; CHECK-A2: lfiwax [[REG:[0-9]+]],
@ -43,3 +56,27 @@ entry:
; CHECK-A2: blr
}
define float @foou(i32 %a) nounwind {
entry:
%x = uitofp i32 %a to float
ret float %x
; CHECK-A2: @foou
; CHECK-A2: stw 3,
; CHECK-A2: lfiwzx [[REG:[0-9]+]],
; CHECK-A2: fcfidus 1, [[REG]]
; CHECK-A2: blr
}
define double @goou(i32 %a) nounwind {
entry:
%x = uitofp i32 %a to double
ret double %x
; CHECK-A2: @goou
; CHECK-A2: stw 3,
; CHECK-A2: lfiwzx [[REG:[0-9]+]],
; CHECK-A2: fcfidu 1, [[REG]]
; CHECK-A2: blr
}

52
test/CodeGen/PowerPC/i64-to-float.ll Normal file
View File

@ -0,0 +1,52 @@
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=a2 | FileCheck %s
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
define float @foo(i64 %a) nounwind {
entry:
%x = sitofp i64 %a to float
ret float %x
; CHECK: @foo
; CHECK: std 3,
; CHECK: lfd [[REG:[0-9]+]],
; CHECK: fcfids 1, [[REG]]
; CHECK: blr
}
define double @goo(i64 %a) nounwind {
entry:
%x = sitofp i64 %a to double
ret double %x
; CHECK: @goo
; CHECK: std 3,
; CHECK: lfd [[REG:[0-9]+]],
; CHECK: fcfid 1, [[REG]]
; CHECK: blr
}
define float @foou(i64 %a) nounwind {
entry:
%x = uitofp i64 %a to float
ret float %x
; CHECK: @foou
; CHECK: std 3,
; CHECK: lfd [[REG:[0-9]+]],
; CHECK: fcfidus 1, [[REG]]
; CHECK: blr
}
define double @goou(i64 %a) nounwind {
entry:
%x = uitofp i64 %a to double
ret double %x
; CHECK: @goou
; CHECK: std 3,
; CHECK: lfd [[REG:[0-9]+]],
; CHECK: fcfidu 1, [[REG]]
; CHECK: blr
}

4
test/CodeGen/PowerPC/i64_fp_round.ll
View File

@ -1,4 +1,4 @@
; RUN: llc -mcpu=pwr7 < %s | FileCheck %s
; RUN: llc -mcpu=pwr7 -mattr=-fpcvt < %s | FileCheck %s
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
@ -22,6 +22,6 @@ entry:
; Also check that with -enable-unsafe-fp-math we do not get that extra
; code sequence. Simply verify that there is no "isel" present.
; RUN: llc -mcpu=pwr7 -enable-unsafe-fp-math < %s | FileCheck %s -check-prefix=UNSAFE
; RUN: llc -mcpu=pwr7 -mattr=-fpcvt -enable-unsafe-fp-math < %s | FileCheck %s -check-prefix=UNSAFE
; CHECK-UNSAFE-NOT: isel

9
test/CodeGen/PowerPC/stfiwx-2.ll
View File

@ -1,11 +1,14 @@
; This cannot be a stfiwx
; RUN: llc < %s -march=ppc32 -mcpu=g5 | grep stb
; RUN: llc < %s -march=ppc32 -mcpu=g5 | not grep stfiwx
; RUN: llc < %s -march=ppc32 -mcpu=g5 | FileCheck %s
define void @test(float %F, i8* %P) {
%I = fptosi float %F to i32
%X = trunc i32 %I to i8
store i8 %X, i8* %P
ret void
; CHECK: fctiwz 0, 1
; CHECK: stfiwx 0, 0, 4
; CHECK: lwz 4, 12(1)
; CHECK: stb 4, 0(3)
; CHECK: blr
}