Add soft float support for a bunch more operations. Original

patch by Richard Osborne, tweaked and extended by your humble
servant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59464 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp

@@ -61,14 +61,28 @@ void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
       break;
     case ISD::FABS:        R = SoftenFloatRes_FABS(N); break;
     case ISD::FADD:        R = SoftenFloatRes_FADD(N); break;
+    case ISD::FCEIL:       R = SoftenFloatRes_FCEIL(N); break;
     case ISD::FCOPYSIGN:   R = SoftenFloatRes_FCOPYSIGN(N); break;
+    case ISD::FCOS:        R = SoftenFloatRes_FCOS(N); break;
     case ISD::FDIV:        R = SoftenFloatRes_FDIV(N); break;
+    case ISD::FEXP:        R = SoftenFloatRes_FEXP(N); break;
+    case ISD::FEXP2:       R = SoftenFloatRes_FEXP2(N); break;
+    case ISD::FFLOOR:      R = SoftenFloatRes_FFLOOR(N); break;
+    case ISD::FLOG:        R = SoftenFloatRes_FLOG(N); break;
+    case ISD::FLOG2:       R = SoftenFloatRes_FLOG2(N); break;
+    case ISD::FLOG10:      R = SoftenFloatRes_FLOG10(N); break;
     case ISD::FMUL:        R = SoftenFloatRes_FMUL(N); break;
+    case ISD::FNEARBYINT:  R = SoftenFloatRes_FNEARBYINT(N); break;
+    case ISD::FNEG:        R = SoftenFloatRes_FNEG(N); break;
     case ISD::FP_EXTEND:   R = SoftenFloatRes_FP_EXTEND(N); break;
     case ISD::FP_ROUND:    R = SoftenFloatRes_FP_ROUND(N); break;
     case ISD::FPOW:        R = SoftenFloatRes_FPOW(N); break;
     case ISD::FPOWI:       R = SoftenFloatRes_FPOWI(N); break;
+    case ISD::FRINT:       R = SoftenFloatRes_FRINT(N); break;
+    case ISD::FSIN:        R = SoftenFloatRes_FSIN(N); break;
+    case ISD::FSQRT:       R = SoftenFloatRes_FSQRT(N); break;
     case ISD::FSUB:        R = SoftenFloatRes_FSUB(N); break;
+    case ISD::FTRUNC:      R = SoftenFloatRes_FTRUNC(N); break;
     case ISD::LOAD:        R = SoftenFloatRes_LOAD(N); break;
     case ISD::SELECT:      R = SoftenFloatRes_SELECT(N); break;
     case ISD::SELECT_CC:   R = SoftenFloatRes_SELECT_CC(N); break;
@@ -121,6 +135,17 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
                      NVT, Ops, 2, false);
 }
 
+SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::CEIL_F32,
+                                  RTLIB::CEIL_F64,
+                                  RTLIB::CEIL_F80,
+                                  RTLIB::CEIL_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
 SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
   SDValue LHS = GetSoftenedFloat(N->getOperand(0));
   SDValue RHS = BitConvertToInteger(N->getOperand(1));
@@ -160,6 +185,17 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
   return DAG.getNode(ISD::OR, LVT, LHS, SignBit);
 }
 
+SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::COS_F32,
+                                  RTLIB::COS_F64,
+                                  RTLIB::COS_F80,
+                                  RTLIB::COS_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
 SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
   MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
   SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
@@ -172,6 +208,72 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
                      NVT, Ops, 2, false);
 }
 
+SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::EXP_F32,
+                                  RTLIB::EXP_F64,
+                                  RTLIB::EXP_F80,
+                                  RTLIB::EXP_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::EXP2_F32,
+                                  RTLIB::EXP2_F64,
+                                  RTLIB::EXP2_F80,
+                                  RTLIB::EXP2_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::FLOOR_F32,
+                                  RTLIB::FLOOR_F64,
+                                  RTLIB::FLOOR_F80,
+                                  RTLIB::FLOOR_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::LOG_F32,
+                                  RTLIB::LOG_F64,
+                                  RTLIB::LOG_F80,
+                                  RTLIB::LOG_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::LOG2_F32,
+                                  RTLIB::LOG2_F64,
+                                  RTLIB::LOG2_F80,
+                                  RTLIB::LOG2_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::LOG10_F32,
+                                  RTLIB::LOG10_F64,
+                                  RTLIB::LOG10_F80,
+                                  RTLIB::LOG10_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
 SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
   MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
   SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
@@ -184,6 +286,30 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
                      NVT, Ops, 2, false);
 }
 
+SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::NEARBYINT_F32,
+                                  RTLIB::NEARBYINT_F64,
+                                  RTLIB::NEARBYINT_F80,
+                                  RTLIB::NEARBYINT_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  // Expand Y = FNEG(X) -> Y = SUB -0.0, X
+  SDValue Ops[2] = { DAG.getConstantFP(-0.0, NVT),
+                     GetSoftenedFloat(N->getOperand(0)) };
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::SUB_F32,
+                                  RTLIB::SUB_F64,
+                                  RTLIB::SUB_F80,
+                                  RTLIB::SUB_PPCF128),
+                     NVT, Ops, 2, false);
+}
+
 SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
   MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
   SDValue Op = N->getOperand(0);
@@ -225,6 +351,39 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
                      NVT, Ops, 2, false);
 }
 
+SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::RINT_F32,
+                                  RTLIB::RINT_F64,
+                                  RTLIB::RINT_F80,
+                                  RTLIB::RINT_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::SIN_F32,
+                                  RTLIB::SIN_F64,
+                                  RTLIB::SIN_F80,
+                                  RTLIB::SIN_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::SQRT_F32,
+                                  RTLIB::SQRT_F64,
+                                  RTLIB::SQRT_F80,
+                                  RTLIB::SQRT_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
 SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
   MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
   SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
@@ -237,6 +396,17 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
                      NVT, Ops, 2, false);
 }
 
+SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
+  MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+  SDValue Op = GetSoftenedFloat(N->getOperand(0));
+  return MakeLibCall(GetFPLibCall(N->getValueType(0),
+                                  RTLIB::TRUNC_F32,
+                                  RTLIB::TRUNC_F64,
+                                  RTLIB::TRUNC_F80,
+                                  RTLIB::TRUNC_PPCF128),
+                     NVT, &Op, 1, false);
+}
+
 SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
   LoadSDNode *L = cast<LoadSDNode>(N);
   MVT VT = N->getValueType(0);
@@ -607,7 +777,7 @@ void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
   case ISD::FPOW:       ExpandFloatRes_FPOW(N, Lo, Hi); break;
   case ISD::FPOWI:      ExpandFloatRes_FPOWI(N, Lo, Hi); break;
   case ISD::FRINT:      ExpandFloatRes_FRINT(N, Lo, Hi); break;
-  case ISD::FSIN:       ExpandFloatRes_FABS(N, Lo, Hi); break;
+  case ISD::FSIN:       ExpandFloatRes_FSIN(N, Lo, Hi); break;
   case ISD::FSQRT:      ExpandFloatRes_FSQRT(N, Lo, Hi); break;
   case ISD::FSUB:       ExpandFloatRes_FSUB(N, Lo, Hi); break;
   case ISD::FTRUNC:     ExpandFloatRes_FTRUNC(N, Lo, Hi); break;

lib/CodeGen/SelectionDAG/LegalizeTypes.h

@@ -351,14 +351,28 @@ private:
   SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N);
   SDValue SoftenFloatRes_FABS(SDNode *N);
   SDValue SoftenFloatRes_FADD(SDNode *N);
+  SDValue SoftenFloatRes_FCEIL(SDNode *N);
   SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N);
+  SDValue SoftenFloatRes_FCOS(SDNode *N);
   SDValue SoftenFloatRes_FDIV(SDNode *N);
+  SDValue SoftenFloatRes_FEXP(SDNode *N);
+  SDValue SoftenFloatRes_FEXP2(SDNode *N);
+  SDValue SoftenFloatRes_FFLOOR(SDNode *N);
+  SDValue SoftenFloatRes_FLOG(SDNode *N);
+  SDValue SoftenFloatRes_FLOG2(SDNode *N);
+  SDValue SoftenFloatRes_FLOG10(SDNode *N);
   SDValue SoftenFloatRes_FMUL(SDNode *N);
+  SDValue SoftenFloatRes_FNEARBYINT(SDNode *N);
+  SDValue SoftenFloatRes_FNEG(SDNode *N);
   SDValue SoftenFloatRes_FP_EXTEND(SDNode *N);
   SDValue SoftenFloatRes_FP_ROUND(SDNode *N);
   SDValue SoftenFloatRes_FPOW(SDNode *N);
   SDValue SoftenFloatRes_FPOWI(SDNode *N);
+  SDValue SoftenFloatRes_FRINT(SDNode *N);
+  SDValue SoftenFloatRes_FSIN(SDNode *N);
+  SDValue SoftenFloatRes_FSQRT(SDNode *N);
   SDValue SoftenFloatRes_FSUB(SDNode *N);
+  SDValue SoftenFloatRes_FTRUNC(SDNode *N);
   SDValue SoftenFloatRes_LOAD(SDNode *N);
   SDValue SoftenFloatRes_SELECT(SDNode *N);
   SDValue SoftenFloatRes_SELECT_CC(SDNode *N);

test/CodeGen/XCore/cos.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl cosf" %t1.s | count 1
+; RUN: grep "bl cos" %t1.s | count 2
+declare double @llvm.cos.f64(double)
+
+define double @test(double %F) {
+        %result = call double @llvm.cos.f64(double %F)
+	ret double %result
+}
+
+declare float @llvm.cos.f32(float)
+
+define float @testf(float %F) {
+        %result = call float @llvm.cos.f32(float %F)
+	ret float %result
+}

test/CodeGen/XCore/exp.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl expf" %t1.s | count 1
+; RUN: grep "bl exp" %t1.s | count 2
+declare double @llvm.exp.f64(double)
+
+define double @test(double %F) {
+        %result = call double @llvm.exp.f64(double %F)
+	ret double %result
+}
+
+declare float @llvm.exp.f32(float)
+
+define float @testf(float %F) {
+        %result = call float @llvm.exp.f32(float %F)
+	ret float %result
+}

test/CodeGen/XCore/exp2.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl exp2f" %t1.s | count 1
+; RUN: grep "bl exp2" %t1.s | count 2
+declare double @llvm.exp2.f64(double)
+
+define double @test(double %F) {
+        %result = call double @llvm.exp2.f64(double %F)
+	ret double %result
+}
+
+declare float @llvm.exp2.f32(float)
+
+define float @testf(float %F) {
+        %result = call float @llvm.exp2.f32(float %F)
+	ret float %result
+}

test/CodeGen/XCore/fneg.ll

@@ -0,0 +1,8 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl __subdf3" %t1.s | count 1
+define i1 @test(double %F) nounwind {
+entry:
+	%0 = sub double -0.000000e+00, %F
+	%1 = fcmp olt double 0.000000e+00, %0
+	ret i1 %1
+}

test/CodeGen/XCore/log.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl logf" %t1.s | count 1
+; RUN: grep "bl log" %t1.s | count 2
+declare double @llvm.log.f64(double)
+
+define double @test(double %F) {
+        %result = call double @llvm.log.f64(double %F)
+	ret double %result
+}
+
+declare float @llvm.log.f32(float)
+
+define float @testf(float %F) {
+        %result = call float @llvm.log.f32(float %F)
+	ret float %result
+}

test/CodeGen/XCore/log10.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl log10f" %t1.s | count 1
+; RUN: grep "bl log10" %t1.s | count 2
+declare double @llvm.log10.f64(double)
+
+define double @test(double %F) {
+        %result = call double @llvm.log10.f64(double %F)
+	ret double %result
+}
+
+declare float @llvm.log10.f32(float)
+
+define float @testf(float %F) {
+        %result = call float @llvm.log10.f32(float %F)
+	ret float %result
+}

test/CodeGen/XCore/log2.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl log2f" %t1.s | count 1
+; RUN: grep "bl log2" %t1.s | count 2
+declare double @llvm.log2.f64(double)
+
+define double @test(double %F) {
+        %result = call double @llvm.log2.f64(double %F)
+	ret double %result
+}
+
+declare float @llvm.log2.f32(float)
+
+define float @testf(float %F) {
+        %result = call float @llvm.log2.f32(float %F)
+	ret float %result
+}

test/CodeGen/XCore/pow.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl powf" %t1.s | count 1
+; RUN: grep "bl pow" %t1.s | count 2
+declare double @llvm.pow.f64(double, double)
+
+define double @test(double %F, double %power) {
+        %result = call double @llvm.pow.f64(double %F, double %power)
+	ret double %result
+}
+
+declare float @llvm.pow.f32(float, float)
+
+define float @testf(float %F, float %power) {
+        %result = call float @llvm.pow.f32(float %F, float %power)
+	ret float %result
+}

test/CodeGen/XCore/powi.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl __powidf2" %t1.s | count 1
+; RUN: grep "bl __powisf2" %t1.s | count 1
+declare double @llvm.powi.f64(double, i32)
+
+define double @test(double %F, i32 %power) {
+        %result = call double @llvm.powi.f64(double %F, i32 %power)
+	ret double %result
+}
+
+declare float @llvm.powi.f32(float, i32)
+
+define float @testf(float %F, i32 %power) {
+        %result = call float @llvm.powi.f32(float %F, i32 %power)
+	ret float %result
+}

test/CodeGen/XCore/sin.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl sinf" %t1.s | count 1
+; RUN: grep "bl sin" %t1.s | count 2
+declare double @llvm.sin.f64(double)
+
+define double @test(double %F) {
+        %result = call double @llvm.sin.f64(double %F)
+	ret double %result
+}
+
+declare float @llvm.sin.f32(float)
+
+define float @testf(float %F) {
+        %result = call float @llvm.sin.f32(float %F)
+	ret float %result
+}

test/CodeGen/XCore/sqrt.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=xcore > %t1.s
+; RUN: grep "bl sqrtf" %t1.s | count 1
+; RUN: grep "bl sqrt" %t1.s | count 2
+declare double @llvm.sqrt.f64(double)
+
+define double @test(double %F) {
+        %result = call double @llvm.sqrt.f64(double %F)
+	ret double %result
+}
+
+declare float @llvm.sqrt.f32(float)
+
+define float @testf(float %F) {
+        %result = call float @llvm.sqrt.f32(float %F)
+	ret float %result
+}