Change if-conversion block size limit checks to add some flexibility.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106901 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 7ef7fd6..c0d0509 100644
--- a/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -1447,6 +1447,24 @@
return false;
}
+bool ARMBaseInstrInfo::
+isProfitableToIfCvt(MachineBasicBlock &MBB, unsigned NumInstrs) const {
+ if (!NumInstrs)
+ return false;
+ if (Subtarget.getCPUString() == "generic")
+ // Generic (and overly aggressive) if-conversion limits for testing.
+ return NumInstrs <= 10;
+ else if (Subtarget.hasV7Ops())
+ return NumInstrs <= 3;
+ return NumInstrs <= 2;
+}
+
+bool ARMBaseInstrInfo::
+isProfitableToIfCvt(MachineBasicBlock &TMBB, unsigned NumT,
+ MachineBasicBlock &FMBB, unsigned NumF) const {
+ return NumT && NumF && NumT <= 2 && NumF <= 2;
+}
+
/// getInstrPredicate - If instruction is predicated, returns its predicate
/// condition, otherwise returns AL. It also returns the condition code
/// register by reference.