Enable support for materializing i1, i8, and i16 integers via move immediate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143739 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 6 deletions

diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp
index 0290c9d611..e8e8124b66 100644
--- a/lib/Target/ARM/ARMFastISel.cpp
+++ b/lib/Target/ARM/ARMFastISel.cpp
@@ -545,22 +545,27 @@ unsigned ARMFastISel::ARMMaterializeFP(const ConstantFP *CFP, EVT VT) {
 
 unsigned ARMFastISel::ARMMaterializeInt(const Constant *C, EVT VT) {
 
-  // For now 32-bit only.
-  if (VT != MVT::i32) return false;
-
-  unsigned DestReg = createResultReg(TLI.getRegClassFor(VT));
+  if (VT != MVT::i32 && VT != MVT::i16 && VT != MVT::i8 && VT != MVT::i1)
+    return false;
 
   // If we can do this in a single instruction without a constant pool entry
   // do so now.
   const ConstantInt *CI = cast<ConstantInt>(C);
   if (Subtarget->hasV6T2Ops() && isUInt<16>(CI->getSExtValue())) {
     unsigned Opc = isThumb ? ARM::t2MOVi16 : ARM::MOVi16;
+    unsigned ImmReg = createResultReg(TLI.getRegClassFor(VT));
     AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
-                            TII.get(Opc), DestReg)
+                            TII.get(Opc), ImmReg)
                     .addImm(CI->getSExtValue()));
-    return DestReg;
+    return ImmReg;
   }
 
+  // For now 32-bit only.
+  if (VT != MVT::i32)
+    return false;
+
+  unsigned DestReg = createResultReg(TLI.getRegClassFor(VT));
+
   // MachineConstantPool wants an explicit alignment.
   unsigned Align = TD.getPrefTypeAlignment(C->getType());
   if (Align == 0) {