Make post-ra scheduling, anti-dep breaking, and register scavenger (conservatively) aware of predicated instructions. This enables ARM to move if-conversion before post-ra scheduler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106091 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 1a35f6f..78ce2f0 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -62,6 +62,11 @@
cl::desc("Generate calls via indirect call instructions."),
cl::init(false));
+static cl::opt<bool>
+ARMInterworking("arm-interworking", cl::Hidden,
+ cl::desc("Enable / disable ARM interworking (for debugging only)"),
+ cl::init(true));
+
static bool CC_ARM_APCS_Custom_f64(unsigned &ValNo, EVT &ValVT, EVT &LocVT,
CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags,
@@ -1188,7 +1193,7 @@
getTargetMachine().getRelocationModel() != Reloc::Static;
isARMFunc = !Subtarget->isThumb() || isStub;
// ARM call to a local ARM function is predicable.
- isLocalARMFunc = !Subtarget->isThumb() && !isExt;
+ isLocalARMFunc = !Subtarget->isThumb() && (!isExt || !ARMInterworking);
// tBX takes a register source operand.
if (isARMFunc && Subtarget->isThumb1Only() && !Subtarget->hasV5TOps()) {
unsigned ARMPCLabelIndex = AFI->createConstPoolEntryUId();