arch, cpu: Remove float type accessors.

Use the binary accessors instead.

Change-Id: Iff1877e92c79df02b3d13635391a8c2f025776a2
Reviewed-on: https://gem5-review.googlesource.com/c/14457
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>

src/arch/alpha/ev5.cc

@@ -88,7 +88,7 @@ zeroRegisters(CPU *cpu)
     // (no longer very clean due to the change in setIntReg() in the
     // cpu model.  Consider changing later.)
     cpu->thread->setIntReg(ZeroReg, 0);
-    cpu->thread->setFloatReg(ZeroReg, 0.0);
+    cpu->thread->setFloatRegBits(ZeroReg, 0);
 }
 
 ////////////////////////////////////////////////////////////////////////

src/arch/arm/tracers/tarmac_record.cc

@@ -235,7 +235,7 @@ TarmacTracerRecord::TraceRegEntry::updateFloat(
 
     regValid = true;
     regName  = "f" + std::to_string(regRelIdx);
-    valueLo = thread->readFloatReg(regRelIdx);
+    valueLo = bitsToFloat32(thread->readFloatRegBits(regRelIdx));
 }
 
 void

src/arch/arm/utility.cc

@@ -152,7 +152,7 @@ copyRegs(ThreadContext *src, ThreadContext *dest)
         dest->setIntRegFlat(i, src->readIntRegFlat(i));
 
     for (int i = 0; i < NumFloatRegs; i++)
-        dest->setFloatRegFlat(i, src->readFloatRegFlat(i));
+        dest->setFloatRegBitsFlat(i, src->readFloatRegBitsFlat(i));
 
     for (int i = 0; i < NumVecRegs; i++)
         dest->setVecRegFlat(i, src->readVecRegFlat(i));

src/arch/mips/utility.cc

@@ -225,7 +225,7 @@ zeroRegisters(CPU *cpu)
     // (no longer very clean due to the change in setIntReg() in the
     // cpu model.  Consider changing later.)
     cpu->thread->setIntReg(ZeroReg, 0);
-    cpu->thread->setFloatReg(ZeroReg, 0.0);
+    cpu->thread->setFloatRegBits(ZeroReg, 0);
 }
 
 void
@@ -247,7 +247,7 @@ copyRegs(ThreadContext *src, ThreadContext *dest)
 
     // Then loop through the floating point registers.
     for (int i = 0; i < NumFloatRegs; i++)
-        dest->setFloatRegFlat(i, src->readFloatRegFlat(i));
+        dest->setFloatRegBitsFlat(i, src->readFloatRegBitsFlat(i));
 
     // Would need to add condition-code regs if implemented
     assert(NumCCRegs == 0);