Test commit

[oota-llvm.git] / lib / Target / Mips / MipsSubtarget.cpp

diff --git a/lib/Target/Mips/MipsSubtarget.cpp b/lib/Target/Mips/MipsSubtarget.cpp
index 8383904246769766d637ad9e43515bef481b8e7e..ba53894fe25af06b1e378adf953a82e7ce489471 100644 (file)
--- a/lib/Target/Mips/MipsSubtarget.cpp
+++ b/lib/Target/Mips/MipsSubtarget.cpp
@@ -14,10 +14,10 @@
 #define DEBUG_TYPE "mips-subtarget"
 
 #include "MipsMachineFunction.h"
-#include "MipsSubtarget.h"
-#include "MipsTargetMachine.h"
 #include "Mips.h"
 #include "MipsRegisterInfo.h"
+#include "MipsSubtarget.h"
+#include "MipsTargetMachine.h"
 #include "llvm/IR/Attributes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/Support/CommandLine.h"
@@ -53,6 +53,12 @@ Mips16HardFloat("mips16-hard-float", cl::NotHidden,
                 cl::desc("MIPS: mips16 hard float enable."),
                 cl::init(false));
 
+static cl::opt<bool>
+Mips16ConstantIslands(
+  "mips16-constant-islands", cl::NotHidden,
+  cl::desc("MIPS: mips16 constant islands enable."),
+  cl::init(true));
+
 void MipsSubtarget::anchor() { }
 
 MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
@@ -75,6 +81,16 @@ MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
   // Parse features string.
   ParseSubtargetFeatures(CPUName, FS);
 
+  if (InMips16Mode && !TM->Options.UseSoftFloat) {
+    // Hard float for mips16 means essentially to compile as soft float
+    // but to use a runtime library for soft float that is written with
+    // native mips32 floating point instructions (those runtime routines
+    // run in mips32 hard float mode).
+    TM->Options.UseSoftFloat = true;
+    TM->Options.FloatABIType = FloatABI::Soft;
+    InMips16HardFloat = true;
+  }
+
   PreviousInMips16Mode = InMips16Mode;
 
   // Initialize scheduling itinerary for the specified CPU.
@@ -89,6 +105,11 @@ MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
           (hasMips64() && (isABI_N32() || isABI_N64()))) &&
          "Invalid  Arch & ABI pair.");
 
+  if (hasMSA() && !isFP64bit())
+    report_fatal_error("MSA requires a 64-bit FPU register file (FR=1 mode). "
+                       "See -mattr=+fp64.",
+                       false);
+
   // Is the target system Linux ?
   if (TT.find("linux") == std::string::npos)
     IsLinux = false;
@@ -155,3 +176,11 @@ void MipsSubtarget::resetSubtarget(MachineFunction *MF) {
   }
 }
 
+bool MipsSubtarget::mipsSEUsesSoftFloat() const {
+  return TM->Options.UseSoftFloat && !InMips16HardFloat;
+}
+
+bool MipsSubtarget::useConstantIslands() {
+  DEBUG(dbgs() << "use constant islands " << Mips16ConstantIslands << "\n");
+  return Mips16ConstantIslands;
+}