[mips] Add predicate HasFPIdx for floating-point indexed load instruction

support and use it in place of HasMips32r2Or64.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168089 91177308-0d34-0410-b5e6-96231b3b80d8

6 files changed, 16 insertions, 11 deletions

diff --git a/lib/Target/Mips/Mips.td b/lib/Target/Mips/Mips.td
index 90c01d5de0..31194ae610 100644
--- a/lib/Target/Mips/Mips.td
+++ b/lib/Target/Mips/Mips.td
@@ -60,16 +60,19 @@ def FeatureSwap        : SubtargetFeature<"swap", "HasSwap", "true",
                                 "Enable 'byte/half swap' instructions.">;
 def FeatureBitCount    : SubtargetFeature<"bitcount", "HasBitCount", "true",
                                 "Enable 'count leading bits' instructions.">;
+def FeatureFPIdx       : SubtargetFeature<"FPIdx", "HasFPIdx", "true",
+                                "Enable 'FP indexed load/store' instructions.">;
 def FeatureMips32      : SubtargetFeature<"mips32", "MipsArchVersion", "Mips32",
                                 "Mips32 ISA Support",
                                 [FeatureCondMov, FeatureBitCount]>;
 def FeatureMips32r2    : SubtargetFeature<"mips32r2", "MipsArchVersion",
                                 "Mips32r2", "Mips32r2 ISA Support",
-                                [FeatureMips32, FeatureSEInReg, FeatureSwap]>;
+                                [FeatureMips32, FeatureSEInReg, FeatureSwap,
+                                 FeatureFPIdx]>;
 def FeatureMips64      : SubtargetFeature<"mips64", "MipsArchVersion",
                                 "Mips64", "Mips64 ISA Support",
                                 [FeatureGP64Bit, FeatureFP64Bit,
-                                 FeatureMips32]>;
+                                 FeatureMips32, FeatureFPIdx]>;
 def FeatureMips64r2    : SubtargetFeature<"mips64r2", "MipsArchVersion",
                                 "Mips64r2", "Mips64r2 ISA Support",
                                 [FeatureMips64, FeatureMips32r2]>;
diff --git a/lib/Target/Mips/MipsISelDAGToDAG.cpp b/lib/Target/Mips/MipsISelDAGToDAG.cpp
index c5fca7f4b2..acfbad235f 100644
--- a/lib/Target/Mips/MipsISelDAGToDAG.cpp
+++ b/lib/Target/Mips/MipsISelDAGToDAG.cpp
@@ -390,7 +390,7 @@ SelectAddr(SDNode *Parent, SDValue Addr, SDValue &Base, SDValue &Offset) {
 
     if (LS &&
         (LS->getMemoryVT() == MVT::f32 || LS->getMemoryVT() == MVT::f64) &&
-        Subtarget.hasMips32r2Or64())
+        Subtarget.hasFPIdx())
       return false;
   }
 
@@ -500,7 +500,7 @@ bool MipsDAGToDAGISel::SelectAddr16(
 
     if (LS &&
         (LS->getMemoryVT() == MVT::f32 || LS->getMemoryVT() == MVT::f64) &&
-        Subtarget.hasMips32r2Or64())
+        Subtarget.hasFPIdx())
       return false;
   }
   Base   = Addr;
diff --git a/lib/Target/Mips/MipsInstrFPU.td b/lib/Target/Mips/MipsInstrFPU.td
index 33ee020689..750b700aee 100644
--- a/lib/Target/Mips/MipsInstrFPU.td
+++ b/lib/Target/Mips/MipsInstrFPU.td
@@ -282,7 +282,7 @@ let Predicates = [NotN64, NotMips64, HasStandardEncoding] in {
 }
 
 // Indexed loads and stores.
-let Predicates = [HasMips32r2Or64, HasStandardEncoding] in {
+let Predicates = [HasFPIdx, HasStandardEncoding] in {
   def LWXC1 : FPIdxLoad<0x0, "lwxc1", FGR32, CPURegs, load>;
   def SWXC1 : FPIdxStore<0x8, "swxc1", FGR32, CPURegs, store>;
 }
diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index f16b5f9ee7..9197066289 100644
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -148,14 +148,14 @@ def HasSwap     :     Predicate<"Subtarget.hasSwap()">,
                       AssemblerPredicate<"FeatureSwap">;
 def HasCondMov  :     Predicate<"Subtarget.hasCondMov()">,
                       AssemblerPredicate<"FeatureCondMov">;
+def HasFPIdx    :     Predicate<"Subtarget.hasFPIdx()">,
+                      AssemblerPredicate<"FeatureFPIdx">;
 def HasMips32    :    Predicate<"Subtarget.hasMips32()">,
                       AssemblerPredicate<"FeatureMips32">;
 def HasMips32r2  :    Predicate<"Subtarget.hasMips32r2()">,
                       AssemblerPredicate<"FeatureMips32r2">;
 def HasMips64    :    Predicate<"Subtarget.hasMips64()">,
                       AssemblerPredicate<"FeatureMips64">;
-def HasMips32r2Or64 : Predicate<"Subtarget.hasMips32r2Or64()">,
-                      AssemblerPredicate<"FeatureMips32r2,FeatureMips64">;
 def NotMips64    :    Predicate<"!Subtarget.hasMips64()">,
                       AssemblerPredicate<"!FeatureMips64">;
 def HasMips64r2  :    Predicate<"Subtarget.hasMips64r2()">,
diff --git a/lib/Target/Mips/MipsSubtarget.cpp b/lib/Target/Mips/MipsSubtarget.cpp
index 930af4dda1..a7436ad860 100644
--- a/lib/Target/Mips/MipsSubtarget.cpp
+++ b/lib/Target/Mips/MipsSubtarget.cpp
@@ -31,8 +31,8 @@ MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
   MipsArchVersion(Mips32), MipsABI(UnknownABI), IsLittle(little),
   IsSingleFloat(false), IsFP64bit(false), IsGP64bit(false), HasVFPU(false),
   IsLinux(true), HasSEInReg(false), HasCondMov(false), HasMulDivAdd(false),
-  HasMinMax(false), HasSwap(false), HasBitCount(false), InMips16Mode(false),
-  HasDSP(false), HasDSPR2(false), IsAndroid(false)
+  HasMinMax(false), HasSwap(false), HasBitCount(false), HasFPIdx(false),
+  InMips16Mode(false), HasDSP(false), HasDSPR2(false), IsAndroid(false)
 {
   std::string CPUName = CPU;
   if (CPUName.empty())
diff --git a/lib/Target/Mips/MipsSubtarget.h b/lib/Target/Mips/MipsSubtarget.h
index ff69237ec2..ff32219c7d 100644
--- a/lib/Target/Mips/MipsSubtarget.h
+++ b/lib/Target/Mips/MipsSubtarget.h
@@ -89,6 +89,9 @@ protected:
   // HasBitCount - Count leading '1' and '0' bits.
   bool HasBitCount;
 
+  // HasFPIdx -- Floating point indexed load/store instructions.
+  bool HasFPIdx;
+
   // InMips16 -- can process Mips16 instructions
   bool InMips16Mode;
 
@@ -127,8 +130,6 @@ public:
   bool hasMips64() const { return MipsArchVersion >= Mips64; }
   bool hasMips64r2() const { return MipsArchVersion == Mips64r2; }
 
-  bool hasMips32r2Or64() const { return hasMips32r2() || hasMips64(); }
-
   bool isLittle() const { return IsLittle; }
   bool isFP64bit() const { return IsFP64bit; }
   bool isGP64bit() const { return IsGP64bit; }
@@ -152,6 +153,7 @@ public:
   bool hasMinMax()    const { return HasMinMax; }
   bool hasSwap()      const { return HasSwap; }
   bool hasBitCount()  const { return HasBitCount; }
+  bool hasFPIdx()     const { return HasFPIdx; }
 };
 } // End llvm namespace