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-rw-r--r--lib/Target/Mips/MipsISelLowering.cpp143
-rw-r--r--test/CodeGen/Mips/fcopysign-f32-f64.ll50
-rw-r--r--test/CodeGen/Mips/fcopysign.ll85
3 files changed, 183 insertions, 95 deletions
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index c772c5d371..2b3921d2b1 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -1756,66 +1756,105 @@ SDValue MipsTargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG) const {
MachinePointerInfo(SV), false, false, 0);
}
-// Called if the size of integer registers is large enough to hold the whole
-// floating point number.
-static SDValue LowerFCOPYSIGNLargeIntReg(SDValue Op, SelectionDAG &DAG) {
- // FIXME: Use ext/ins instructions if target architecture is Mips32r2.
- EVT ValTy = Op.getValueType();
- EVT IntValTy = MVT::getIntegerVT(ValTy.getSizeInBits());
- uint64_t Mask = (uint64_t)1 << (ValTy.getSizeInBits() - 1);
- DebugLoc dl = Op.getDebugLoc();
- SDValue Op0 = DAG.getNode(ISD::BITCAST, dl, IntValTy, Op.getOperand(0));
- SDValue Op1 = DAG.getNode(ISD::BITCAST, dl, IntValTy, Op.getOperand(1));
- SDValue And0 = DAG.getNode(ISD::AND, dl, IntValTy, Op0,
- DAG.getConstant(Mask - 1, IntValTy));
- SDValue And1 = DAG.getNode(ISD::AND, dl, IntValTy, Op1,
- DAG.getConstant(Mask, IntValTy));
- SDValue Result = DAG.getNode(ISD::OR, dl, IntValTy, And0, And1);
- return DAG.getNode(ISD::BITCAST, dl, ValTy, Result);
-}
+static SDValue LowerFCOPYSIGN32(SDValue Op, SelectionDAG &DAG, bool HasR2) {
+ EVT TyX = Op.getOperand(0).getValueType();
+ EVT TyY = Op.getOperand(1).getValueType();
+ SDValue Const1 = DAG.getConstant(1, MVT::i32);
+ SDValue Const31 = DAG.getConstant(31, MVT::i32);
+ DebugLoc DL = Op.getDebugLoc();
+ SDValue Res;
+
+ // If operand is of type f64, extract the upper 32-bit. Otherwise, bitcast it
+ // to i32.
+ SDValue X = (TyX == MVT::f32) ?
+ DAG.getNode(ISD::BITCAST, DL, MVT::i32, Op.getOperand(0)) :
+ DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, Op.getOperand(0),
+ Const1);
+ SDValue Y = (TyY == MVT::f32) ?
+ DAG.getNode(ISD::BITCAST, DL, MVT::i32, Op.getOperand(1)) :
+ DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32, Op.getOperand(1),
+ Const1);
+
+ if (HasR2) {
+ // ext E, Y, 31, 1 ; extract bit31 of Y
+ // ins X, E, 31, 1 ; insert extracted bit at bit31 of X
+ SDValue E = DAG.getNode(MipsISD::Ext, DL, MVT::i32, Y, Const31, Const1);
+ Res = DAG.getNode(MipsISD::Ins, DL, MVT::i32, E, Const31, Const1, X);
+ } else {
+ // sll SllX, X, 1
+ // srl SrlX, SllX, 1
+ // srl SrlY, Y, 31
+ // sll SllY, SrlX, 31
+ // or Or, SrlX, SllY
+ SDValue SllX = DAG.getNode(ISD::SHL, DL, MVT::i32, X, Const1);
+ SDValue SrlX = DAG.getNode(ISD::SRL, DL, MVT::i32, SllX, Const1);
+ SDValue SrlY = DAG.getNode(ISD::SRL, DL, MVT::i32, Y, Const31);
+ SDValue SllY = DAG.getNode(ISD::SHL, DL, MVT::i32, SrlY, Const31);
+ Res = DAG.getNode(ISD::OR, DL, MVT::i32, SrlX, SllY);
+ }
-// Called if the size of integer registers is not large enough to hold the whole
-// floating point number (e.g. f64 & 32-bit integer register).
-static SDValue
-LowerFCOPYSIGNSmallIntReg(SDValue Op, SelectionDAG &DAG, bool isLittle) {
- // FIXME:
- // Use ext/ins instructions if target architecture is Mips32r2.
- // Eliminate redundant mfc1 and mtc1 instructions.
- unsigned LoIdx = 0, HiIdx = 1;
+ if (TyX == MVT::f32)
+ return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), Res);
- if (!isLittle)
- std::swap(LoIdx, HiIdx);
+ SDValue LowX = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
+ Op.getOperand(0), DAG.getConstant(0, MVT::i32));
+ return DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, LowX, Res);
+}
- DebugLoc dl = Op.getDebugLoc();
- SDValue Word0 = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32,
- Op.getOperand(0),
- DAG.getConstant(LoIdx, MVT::i32));
- SDValue Hi0 = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32,
- Op.getOperand(0), DAG.getConstant(HiIdx, MVT::i32));
- SDValue Hi1 = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32,
- Op.getOperand(1), DAG.getConstant(HiIdx, MVT::i32));
- SDValue And0 = DAG.getNode(ISD::AND, dl, MVT::i32, Hi0,
- DAG.getConstant(0x7fffffff, MVT::i32));
- SDValue And1 = DAG.getNode(ISD::AND, dl, MVT::i32, Hi1,
- DAG.getConstant(0x80000000, MVT::i32));
- SDValue Word1 = DAG.getNode(ISD::OR, dl, MVT::i32, And0, And1);
-
- if (!isLittle)
- std::swap(Word0, Word1);
-
- return DAG.getNode(MipsISD::BuildPairF64, dl, MVT::f64, Word0, Word1);
+static SDValue LowerFCOPYSIGN64(SDValue Op, SelectionDAG &DAG, bool HasR2) {
+ unsigned WidthX = Op.getOperand(0).getValueSizeInBits();
+ unsigned WidthY = Op.getOperand(1).getValueSizeInBits();
+ EVT TyX = MVT::getIntegerVT(WidthX), TyY = MVT::getIntegerVT(WidthY);
+ SDValue Const1 = DAG.getConstant(1, MVT::i32);
+ DebugLoc DL = Op.getDebugLoc();
+
+ // Bitcast to integer nodes.
+ SDValue X = DAG.getNode(ISD::BITCAST, DL, TyX, Op.getOperand(0));
+ SDValue Y = DAG.getNode(ISD::BITCAST, DL, TyY, Op.getOperand(1));
+
+ if (HasR2) {
+ // ext E, Y, width(Y) - 1, 1 ; extract bit width(Y)-1 of Y
+ // ins X, E, width(X) - 1, 1 ; insert extracted bit at bit width(X)-1 of X
+ SDValue E = DAG.getNode(MipsISD::Ext, DL, TyY, Y,
+ DAG.getConstant(WidthY - 1, MVT::i32), Const1);
+
+ if (WidthX > WidthY)
+ E = DAG.getNode(ISD::ZERO_EXTEND, DL, TyX, E);
+ else if (WidthY > WidthX)
+ E = DAG.getNode(ISD::TRUNCATE, DL, TyX, E);
+
+ SDValue I = DAG.getNode(MipsISD::Ins, DL, TyX, E,
+ DAG.getConstant(WidthX - 1, MVT::i32), Const1, X);
+ return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), I);
+ }
+
+ // (d)sll SllX, X, 1
+ // (d)srl SrlX, SllX, 1
+ // (d)srl SrlY, Y, width(Y)-1
+ // (d)sll SllY, SrlX, width(Y)-1
+ // or Or, SrlX, SllY
+ SDValue SllX = DAG.getNode(ISD::SHL, DL, TyX, X, Const1);
+ SDValue SrlX = DAG.getNode(ISD::SRL, DL, TyX, SllX, Const1);
+ SDValue SrlY = DAG.getNode(ISD::SRL, DL, TyY, Y,
+ DAG.getConstant(WidthY - 1, MVT::i32));
+
+ if (WidthX > WidthY)
+ SrlY = DAG.getNode(ISD::ZERO_EXTEND, DL, TyX, SrlY);
+ else if (WidthY > WidthX)
+ SrlY = DAG.getNode(ISD::TRUNCATE, DL, TyX, SrlY);
+
+ SDValue SllY = DAG.getNode(ISD::SHL, DL, TyX, SrlY,
+ DAG.getConstant(WidthX - 1, MVT::i32));
+ SDValue Or = DAG.getNode(ISD::OR, DL, TyX, SrlX, SllY);
+ return DAG.getNode(ISD::BITCAST, DL, Op.getOperand(0).getValueType(), Or);
}
SDValue
MipsTargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const {
- EVT Ty = Op.getValueType();
-
- assert(Ty == MVT::f32 || Ty == MVT::f64);
-
- if (Ty == MVT::f32 || HasMips64)
- return LowerFCOPYSIGNLargeIntReg(Op, DAG);
+ if (Subtarget->hasMips64())
+ return LowerFCOPYSIGN64(Op, DAG, Subtarget->hasMips32r2());
- return LowerFCOPYSIGNSmallIntReg(Op, DAG, Subtarget->isLittle());
+ return LowerFCOPYSIGN32(Op, DAG, Subtarget->hasMips32r2());
}
SDValue MipsTargetLowering::
diff --git a/test/CodeGen/Mips/fcopysign-f32-f64.ll b/test/CodeGen/Mips/fcopysign-f32-f64.ll
new file mode 100644
index 0000000000..b36473d6f5
--- /dev/null
+++ b/test/CodeGen/Mips/fcopysign-f32-f64.ll
@@ -0,0 +1,50 @@
+; RUN: llc < %s -march=mips64el -mcpu=mips64 -mattr=n64 | FileCheck %s -check-prefix=64
+; RUN: llc < %s -march=mips64el -mcpu=mips64r2 -mattr=n64 | FileCheck %s -check-prefix=64R2
+
+declare double @copysign(double, double) nounwind readnone
+
+declare float @copysignf(float, float) nounwind readnone
+
+define float @func2(float %d, double %f) nounwind readnone {
+entry:
+; 64: func2
+; 64: lui $[[T0:[0-9]+]], 32767
+; 64: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
+; 64: and $[[AND0:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
+; 64: dsrl ${{[0-9]+}}, ${{[0-9]+}}, 63
+; 64: sll $[[SLL:[0-9]+]], ${{[0-9]+}}, 31
+; 64: or $[[OR:[0-9]+]], $[[AND0]], $[[SLL]]
+; 64: mtc1 $[[OR]], $f0
+
+; 64R2: dext ${{[0-9]+}}, ${{[0-9]+}}, 63, 1
+; 64R2: ins $[[INS:[0-9]+]], ${{[0-9]+}}, 31, 1
+; 64R2: mtc1 $[[INS]], $f0
+
+ %add = fadd float %d, 1.000000e+00
+ %conv = fptrunc double %f to float
+ %call = tail call float @copysignf(float %add, float %conv) nounwind readnone
+ ret float %call
+}
+
+define double @func3(double %d, float %f) nounwind readnone {
+entry:
+
+; 64: daddiu $[[T0:[0-9]+]], $zero, 1
+; 64: dsll $[[T1:[0-9]+]], $[[T0]], 63
+; 64: daddiu $[[MSK0:[0-9]+]], $[[T1]], -1
+; 64: and $[[AND0:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
+; 64: srl ${{[0-9]+}}, ${{[0-9]+}}, 31
+; 64: dsll $[[DSLL:[0-9]+]], ${{[0-9]+}}, 63
+; 64: or $[[OR:[0-9]+]], $[[AND0]], $[[DSLL]]
+; 64: dmtc1 $[[OR]], $f0
+
+; 64R2: ext ${{[0-9]+}}, ${{[0-9]+}}, 31, 1
+; 64R2: dins $[[INS:[0-9]+]], ${{[0-9]+}}, 63, 1
+; 64R2: dmtc1 $[[INS]], $f0
+
+ %add = fadd double %d, 1.000000e+00
+ %conv = fpext float %f to double
+ %call = tail call double @copysign(double %add, double %conv) nounwind readnone
+ ret double %call
+}
+
diff --git a/test/CodeGen/Mips/fcopysign.ll b/test/CodeGen/Mips/fcopysign.ll
index e494fe2291..1c57eca3c9 100644
--- a/test/CodeGen/Mips/fcopysign.ll
+++ b/test/CodeGen/Mips/fcopysign.ll
@@ -1,40 +1,35 @@
-; RUN: llc < %s -march=mipsel | FileCheck %s -check-prefix=MIPS32-EL
-; RUN: llc < %s -march=mips | FileCheck %s -check-prefix=MIPS32-EB
-; RUN: llc < %s -march=mips64el -mcpu=mips64 -mattr=n64 | FileCheck %s -check-prefix=MIPS64
+; RUN: llc < %s -march=mipsel -mcpu=mips32 | FileCheck %s -check-prefix=32
+; RUN: llc < %s -march=mipsel -mcpu=mips32r2 | FileCheck %s -check-prefix=32R2
+; RUN: llc < %s -march=mips64el -mcpu=mips64 -mattr=n64 | FileCheck %s -check-prefix=64
+; RUN: llc < %s -march=mips64el -mcpu=mips64r2 -mattr=n64 | FileCheck %s -check-prefix=64R2
define double @func0(double %d0, double %d1) nounwind readnone {
entry:
-; MIPS32-EL: func0:
-; MIPS32-EL: mfc1 $[[HI0:[0-9]+]], $f15
-; MIPS32-EL: lui $[[MSK1:[0-9]+]], 32768
-; MIPS32-EL: and $[[AND1:[0-9]+]], $[[HI0]], $[[MSK1]]
-; MIPS32-EL: lui $[[T0:[0-9]+]], 32767
-; MIPS32-EL: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
-; MIPS32-EL: mfc1 $[[HI1:[0-9]+]], $f13
-; MIPS32-EL: and $[[AND0:[0-9]+]], $[[HI1]], $[[MSK0]]
-; MIPS32-EL: or $[[OR:[0-9]+]], $[[AND0]], $[[AND1]]
-; MIPS32-EL: mfc1 $[[LO0:[0-9]+]], $f12
-; MIPS32-EL: mtc1 $[[LO0]], $f0
-; MIPS32-EL: mtc1 $[[OR]], $f1
;
-; MIPS32-EB: mfc1 $[[HI1:[0-9]+]], $f14
-; MIPS32-EB: lui $[[MSK1:[0-9]+]], 32768
-; MIPS32-EB: and $[[AND1:[0-9]+]], $[[HI1]], $[[MSK1]]
-; MIPS32-EB: lui $[[T0:[0-9]+]], 32767
-; MIPS32-EB: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
-; MIPS32-EB: mfc1 $[[HI0:[0-9]+]], $f12
-; MIPS32-EB: and $[[AND0:[0-9]+]], $[[HI0]], $[[MSK0]]
-; MIPS32-EB: or $[[OR:[0-9]+]], $[[AND0]], $[[AND1]]
-; MIPS32-EB: mfc1 $[[LO0:[0-9]+]], $f13
-; MIPS32-EB: mtc1 $[[OR]], $f0
-; MIPS32-EB: mtc1 $[[LO0]], $f1
-
-; MIPS64: dmfc1 $[[R0:[0-9]+]], $f13
-; MIPS64: and $[[R1:[0-9]+]], $[[R0]], ${{[0-9]+}}
-; MIPS64: dmfc1 $[[R2:[0-9]+]], $f12
-; MIPS64: and $[[R3:[0-9]+]], $[[R2]], ${{[0-9]+}}
-; MIPS64: or $[[R4:[0-9]+]], $[[R3]], $[[R1]]
-; MIPS64: dmtc1 $[[R4]], $f0
+; 32: lui $[[MSK1:[0-9]+]], 32768
+; 32: and $[[AND1:[0-9]+]], ${{[0-9]+}}, $[[MSK1]]
+; 32: lui $[[T0:[0-9]+]], 32767
+; 32: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
+; 32: and $[[AND0:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
+; 32: or $[[OR:[0-9]+]], $[[AND0]], $[[AND1]]
+; 32: mtc1 $[[OR]], $f1
+
+; 32R2: ext $[[EXT:[0-9]+]], ${{[0-9]+}}, 31, 1
+; 32R2: ins $[[INS:[0-9]+]], $[[EXT]], 31, 1
+; 32R2: mtc1 $[[INS]], $f1
+
+; 64: daddiu $[[T0:[0-9]+]], $zero, 1
+; 64: dsll $[[MSK1:[0-9]+]], $[[T0]], 63
+; 64: and $[[AND1:[0-9]+]], ${{[0-9]+}}, $[[MSK1]]
+; 64: daddiu $[[MSK0:[0-9]+]], $[[MSK1]], -1
+; 64: and $[[AND0:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
+; 64: or $[[OR:[0-9]+]], $[[AND0]], $[[AND1]]
+; 64: dmtc1 $[[OR]], $f0
+
+; 64R2: dext $[[EXT:[0-9]+]], ${{[0-9]+}}, 63, 1
+; 64R2: dins $[[INS:[0-9]+]], $[[EXT]], 63, 1
+; 64R2: dmtc1 $[[INS]], $f0
+
%call = tail call double @copysign(double %d0, double %d1) nounwind readnone
ret double %call
}
@@ -43,18 +38,22 @@ declare double @copysign(double, double) nounwind readnone
define float @func1(float %f0, float %f1) nounwind readnone {
entry:
-; MIPS32-EL: func1:
-; MIPS32-EL: mfc1 $[[ARG1:[0-9]+]], $f14
-; MIPS32-EL: lui $[[MSK1:[0-9]+]], 32768
-; MIPS32-EL: and $[[T3:[0-9]+]], $[[ARG1]], $[[MSK1]]
-; MIPS32-EL: lui $[[T0:[0-9]+]], 32767
-; MIPS32-EL: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
-; MIPS32-EL: mfc1 $[[ARG0:[0-9]+]], $f12
-; MIPS32-EL: and $[[T2:[0-9]+]], $[[ARG0]], $[[MSK0]]
-; MIPS32-EL: or $[[T4:[0-9]+]], $[[T2]], $[[T3]]
-; MIPS32-EL: mtc1 $[[T4]], $f0
+
+; 32: lui $[[MSK1:[0-9]+]], 32768
+; 32: and $[[AND1:[0-9]+]], ${{[0-9]+}}, $[[MSK1]]
+; 32: lui $[[T0:[0-9]+]], 32767
+; 32: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
+; 32: and $[[AND0:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
+; 32: or $[[OR:[0-9]+]], $[[AND0]], $[[AND1]]
+; 32: mtc1 $[[OR]], $f0
+
+; 32R2: ext $[[EXT:[0-9]+]], ${{[0-9]+}}, 31, 1
+; 32R2: ins $[[INS:[0-9]+]], $[[EXT]], 31, 1
+; 32R2: mtc1 $[[INS]], $f0
+
%call = tail call float @copysignf(float %f0, float %f1) nounwind readnone
ret float %call
}
declare float @copysignf(float, float) nounwind readnone
+
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-02-22 12:49:24 +0000