[Sparc] Do not emit nop after fcmp* instruction with V9.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192056 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/DelaySlotFiller.cpp b/lib/Target/Sparc/DelaySlotFiller.cpp
index b101751..4ae6407 100644
--- a/lib/Target/Sparc/DelaySlotFiller.cpp
+++ b/lib/Target/Sparc/DelaySlotFiller.cpp
@@ -14,6 +14,7 @@
#define DEBUG_TYPE "delay-slot-filler"
#include "Sparc.h"
+#include "SparcSubtarget.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
@@ -39,10 +40,13 @@
/// layout, etc.
///
TargetMachine &TM;
+ const SparcSubtarget *Subtarget;
static char ID;
Filler(TargetMachine &tm)
- : MachineFunctionPass(ID), TM(tm) { }
+ : MachineFunctionPass(ID), TM(tm),
+ Subtarget(&TM.getSubtarget<SparcSubtarget>()) {
+ }
virtual const char *getPassName() const {
return "SPARC Delay Slot Filler";
@@ -102,6 +106,8 @@
bool Filler::runOnMachineBasicBlock(MachineBasicBlock &MBB) {
bool Changed = false;
+ const TargetInstrInfo *TII = TM.getInstrInfo();
+
for (MachineBasicBlock::iterator I = MBB.begin(); I != MBB.end(); ) {
MachineBasicBlock::iterator MI = I;
++I;
@@ -114,6 +120,14 @@
continue;
}
+ if (!Subtarget->isV9() &&
+ (MI->getOpcode() == SP::FCMPS || MI->getOpcode() == SP::FCMPD
+ || MI->getOpcode() == SP::FCMPQ)) {
+ BuildMI(MBB, I, MI->getDebugLoc(), TII->get(SP::NOP));
+ Changed = true;
+ continue;
+ }
+
// If MI has no delay slot, skip.
if (!MI->hasDelaySlot())
continue;
@@ -126,7 +140,6 @@
++FilledSlots;
Changed = true;
- const TargetInstrInfo *TII = TM.getInstrInfo();
if (D == MBB.end())
BuildMI(MBB, I, MI->getDebugLoc(), TII->get(SP::NOP));
else