Long double patch 4 of N: initial x87 implementation.
Lots of problems yet but some simple things work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40847 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86FloatingPoint.cpp b/lib/Target/X86/X86FloatingPoint.cpp
index c293a32..e481406 100644
--- a/lib/Target/X86/X86FloatingPoint.cpp
+++ b/lib/Target/X86/X86FloatingPoint.cpp
@@ -326,53 +326,79 @@
 static const TableEntry OpcodeTable[] = {
   { X86::ABS_Fp32     , X86::ABS_F     },
   { X86::ABS_Fp64     , X86::ABS_F     },
+  { X86::ABS_Fp80     , X86::ABS_F     },
   { X86::ADD_Fp32m    , X86::ADD_F32m  },
   { X86::ADD_Fp64m    , X86::ADD_F64m  },
   { X86::ADD_Fp64m32  , X86::ADD_F32m  },
+  { X86::ADD_Fp80m32  , X86::ADD_F32m  },
+  { X86::ADD_Fp80m64  , X86::ADD_F64m  },
   { X86::ADD_FpI16m32 , X86::ADD_FI16m },
   { X86::ADD_FpI16m64 , X86::ADD_FI16m },
+  { X86::ADD_FpI16m80 , X86::ADD_FI16m },
   { X86::ADD_FpI32m32 , X86::ADD_FI32m },
   { X86::ADD_FpI32m64 , X86::ADD_FI32m },
+  { X86::ADD_FpI32m80 , X86::ADD_FI32m },
   { X86::CHS_Fp32     , X86::CHS_F     },
   { X86::CHS_Fp64     , X86::CHS_F     },
+  { X86::CHS_Fp80     , X86::CHS_F     },
   { X86::CMOVBE_Fp32  , X86::CMOVBE_F  },
   { X86::CMOVBE_Fp64  , X86::CMOVBE_F  },
+  { X86::CMOVBE_Fp80  , X86::CMOVBE_F  },
   { X86::CMOVB_Fp32   , X86::CMOVB_F   },
   { X86::CMOVB_Fp64   , X86::CMOVB_F  },
+  { X86::CMOVB_Fp80   , X86::CMOVB_F  },
   { X86::CMOVE_Fp32   , X86::CMOVE_F  },
   { X86::CMOVE_Fp64   , X86::CMOVE_F   },
+  { X86::CMOVE_Fp80   , X86::CMOVE_F   },
   { X86::CMOVNBE_Fp32 , X86::CMOVNBE_F },
   { X86::CMOVNBE_Fp64 , X86::CMOVNBE_F },
+  { X86::CMOVNBE_Fp80 , X86::CMOVNBE_F },
   { X86::CMOVNB_Fp32  , X86::CMOVNB_F  },
   { X86::CMOVNB_Fp64  , X86::CMOVNB_F  },
+  { X86::CMOVNB_Fp80  , X86::CMOVNB_F  },
   { X86::CMOVNE_Fp32  , X86::CMOVNE_F  },
   { X86::CMOVNE_Fp64  , X86::CMOVNE_F  },
+  { X86::CMOVNE_Fp80  , X86::CMOVNE_F  },
   { X86::CMOVNP_Fp32  , X86::CMOVNP_F  },
   { X86::CMOVNP_Fp64  , X86::CMOVNP_F  },
+  { X86::CMOVNP_Fp80  , X86::CMOVNP_F  },
   { X86::CMOVP_Fp32   , X86::CMOVP_F   },
   { X86::CMOVP_Fp64   , X86::CMOVP_F   },
+  { X86::CMOVP_Fp80   , X86::CMOVP_F   },
   { X86::COS_Fp32     , X86::COS_F     },
   { X86::COS_Fp64     , X86::COS_F     },
+  { X86::COS_Fp80     , X86::COS_F     },
   { X86::DIVR_Fp32m   , X86::DIVR_F32m },
   { X86::DIVR_Fp64m   , X86::DIVR_F64m },
   { X86::DIVR_Fp64m32 , X86::DIVR_F32m },
+  { X86::DIVR_Fp80m32 , X86::DIVR_F32m },
+  { X86::DIVR_Fp80m64 , X86::DIVR_F64m },
   { X86::DIVR_FpI16m32, X86::DIVR_FI16m},
   { X86::DIVR_FpI16m64, X86::DIVR_FI16m},
+  { X86::DIVR_FpI16m80, X86::DIVR_FI16m},
   { X86::DIVR_FpI32m32, X86::DIVR_FI32m},
   { X86::DIVR_FpI32m64, X86::DIVR_FI32m},
+  { X86::DIVR_FpI32m80, X86::DIVR_FI32m},
   { X86::DIV_Fp32m    , X86::DIV_F32m  },
   { X86::DIV_Fp64m    , X86::DIV_F64m  },
   { X86::DIV_Fp64m32  , X86::DIV_F32m  },
+  { X86::DIV_Fp80m32  , X86::DIV_F32m  },
+  { X86::DIV_Fp80m64  , X86::DIV_F64m  },
   { X86::DIV_FpI16m32 , X86::DIV_FI16m },
   { X86::DIV_FpI16m64 , X86::DIV_FI16m },
+  { X86::DIV_FpI16m80 , X86::DIV_FI16m },
   { X86::DIV_FpI32m32 , X86::DIV_FI32m },
   { X86::DIV_FpI32m64 , X86::DIV_FI32m },
+  { X86::DIV_FpI32m80 , X86::DIV_FI32m },
   { X86::ILD_Fp16m32  , X86::ILD_F16m  },
   { X86::ILD_Fp16m64  , X86::ILD_F16m  },
+  { X86::ILD_Fp16m80  , X86::ILD_F16m  },
   { X86::ILD_Fp32m32  , X86::ILD_F32m  },
   { X86::ILD_Fp32m64  , X86::ILD_F32m  },
+  { X86::ILD_Fp32m80  , X86::ILD_F32m  },
   { X86::ILD_Fp64m32  , X86::ILD_F64m  },
   { X86::ILD_Fp64m64  , X86::ILD_F64m  },
+  { X86::ILD_Fp64m80  , X86::ILD_F64m  },
   { X86::ISTT_Fp16m32 , X86::ISTT_FP16m},
   { X86::ISTT_Fp16m64 , X86::ISTT_FP16m},
   { X86::ISTT_Fp32m32 , X86::ISTT_FP32m},
@@ -381,50 +407,76 @@
   { X86::ISTT_Fp64m64 , X86::ISTT_FP64m},
   { X86::IST_Fp16m32  , X86::IST_F16m  },
   { X86::IST_Fp16m64  , X86::IST_F16m  },
+  { X86::IST_Fp16m80  , X86::IST_F16m  },
   { X86::IST_Fp32m32  , X86::IST_F32m  },
   { X86::IST_Fp32m64  , X86::IST_F32m  },
+  { X86::IST_Fp32m80  , X86::IST_F32m  },
   { X86::IST_Fp64m32  , X86::IST_FP64m },
   { X86::IST_Fp64m64  , X86::IST_FP64m },
+  { X86::IST_Fp64m80  , X86::IST_FP64m },
   { X86::LD_Fp032     , X86::LD_F0     },
   { X86::LD_Fp064     , X86::LD_F0     },
+  { X86::LD_Fp080     , X86::LD_F0     },
   { X86::LD_Fp132     , X86::LD_F1     },
   { X86::LD_Fp164     , X86::LD_F1     },
+  { X86::LD_Fp180     , X86::LD_F1     },
   { X86::LD_Fp32m     , X86::LD_F32m   },
   { X86::LD_Fp64m     , X86::LD_F64m   },
+  { X86::LD_Fp80m     , X86::LD_F80m   },
   { X86::MUL_Fp32m    , X86::MUL_F32m  },
   { X86::MUL_Fp64m    , X86::MUL_F64m  },
   { X86::MUL_Fp64m32  , X86::MUL_F32m  },
+  { X86::MUL_Fp80m32  , X86::MUL_F32m  },
+  { X86::MUL_Fp80m64  , X86::MUL_F64m  },
   { X86::MUL_FpI16m32 , X86::MUL_FI16m },
   { X86::MUL_FpI16m64 , X86::MUL_FI16m },
+  { X86::MUL_FpI16m80 , X86::MUL_FI16m },
   { X86::MUL_FpI32m32 , X86::MUL_FI32m },
   { X86::MUL_FpI32m64 , X86::MUL_FI32m },
+  { X86::MUL_FpI32m80 , X86::MUL_FI32m },
   { X86::SIN_Fp32     , X86::SIN_F     },
   { X86::SIN_Fp64     , X86::SIN_F     },
+  { X86::SIN_Fp80     , X86::SIN_F     },
   { X86::SQRT_Fp32    , X86::SQRT_F    },
   { X86::SQRT_Fp64    , X86::SQRT_F    },
+  { X86::SQRT_Fp80    , X86::SQRT_F    },
   { X86::ST_Fp32m     , X86::ST_F32m   },
   { X86::ST_Fp64m     , X86::ST_F64m   },
   { X86::ST_Fp64m32   , X86::ST_F32m   },
+  { X86::ST_Fp80m32   , X86::ST_F32m   },
+  { X86::ST_Fp80m64   , X86::ST_F64m   },
+  { X86::ST_FpP80m    , X86::ST_FP80m  },
   { X86::SUBR_Fp32m   , X86::SUBR_F32m },
   { X86::SUBR_Fp64m   , X86::SUBR_F64m },
   { X86::SUBR_Fp64m32 , X86::SUBR_F32m },
+  { X86::SUBR_Fp80m32 , X86::SUBR_F32m },
+  { X86::SUBR_Fp80m64 , X86::SUBR_F64m },
   { X86::SUBR_FpI16m32, X86::SUBR_FI16m},
   { X86::SUBR_FpI16m64, X86::SUBR_FI16m},
+  { X86::SUBR_FpI16m80, X86::SUBR_FI16m},
   { X86::SUBR_FpI32m32, X86::SUBR_FI32m},
   { X86::SUBR_FpI32m64, X86::SUBR_FI32m},
+  { X86::SUBR_FpI32m80, X86::SUBR_FI32m},
   { X86::SUB_Fp32m    , X86::SUB_F32m  },
   { X86::SUB_Fp64m    , X86::SUB_F64m  },
   { X86::SUB_Fp64m32  , X86::SUB_F32m  },
+  { X86::SUB_Fp80m32  , X86::SUB_F32m  },
+  { X86::SUB_Fp80m64  , X86::SUB_F64m  },
   { X86::SUB_FpI16m32 , X86::SUB_FI16m },
   { X86::SUB_FpI16m64 , X86::SUB_FI16m },
+  { X86::SUB_FpI16m80 , X86::SUB_FI16m },
   { X86::SUB_FpI32m32 , X86::SUB_FI32m },
   { X86::SUB_FpI32m64 , X86::SUB_FI32m },
+  { X86::SUB_FpI32m80 , X86::SUB_FI32m },
   { X86::TST_Fp32     , X86::TST_F     },
   { X86::TST_Fp64     , X86::TST_F     },
+  { X86::TST_Fp80     , X86::TST_F     },
   { X86::UCOM_FpIr32  , X86::UCOM_FIr  },
   { X86::UCOM_FpIr64  , X86::UCOM_FIr  },
+  { X86::UCOM_FpIr80  , X86::UCOM_FIr  },
   { X86::UCOM_Fpr32   , X86::UCOM_Fr   },
   { X86::UCOM_Fpr64   , X86::UCOM_Fr   },
+  { X86::UCOM_Fpr80   , X86::UCOM_Fr   },
 };
 
 static unsigned getConcreteOpcode(unsigned Opcode) {
@@ -563,7 +615,8 @@
        MI->getOpcode() == X86::IST_Fp64m64 ||
        MI->getOpcode() == X86::ISTT_Fp16m64 ||
        MI->getOpcode() == X86::ISTT_Fp32m64 ||
-       MI->getOpcode() == X86::ISTT_Fp64m64)) {
+       MI->getOpcode() == X86::ISTT_Fp64m64 ||
+       MI->getOpcode() == X86::ST_FpP80m)) {
     duplicateToTop(Reg, 7 /*temp register*/, I);
   } else {
     moveToTop(Reg, I);            // Move to the top of the stack...
@@ -856,7 +909,12 @@
   case X86::MOV_Fp3232:
   case X86::MOV_Fp3264:
   case X86::MOV_Fp6432:
-  case X86::MOV_Fp6464: {
+  case X86::MOV_Fp6464: 
+  case X86::MOV_Fp3280:
+  case X86::MOV_Fp6480:
+  case X86::MOV_Fp8032:
+  case X86::MOV_Fp8064: 
+  case X86::MOV_Fp8080: {
     unsigned SrcReg = getFPReg(MI->getOperand(1));
     unsigned DestReg = getFPReg(MI->getOperand(0));