[X86] Use TargetConstant instead of Constant for operands to X86vaarg64.

Author: topperc

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -24294,9 +24294,10 @@ SDValue X86TargetLowering::LowerVAARG(SDValue Op, SelectionDAG &DAG) const {
 
   // Insert VAARG_64 node into the DAG
   // VAARG_64 returns two values: Variable Argument Address, Chain
-  SDValue InstOps[] = {Chain, SrcPtr, DAG.getConstant(ArgSize, dl, MVT::i32),
-                       DAG.getConstant(ArgMode, dl, MVT::i8),
-                       DAG.getConstant(Align, dl, MVT::i32)};
+  SDValue InstOps[] = {Chain, SrcPtr,
+                       DAG.getTargetConstant(ArgSize, dl, MVT::i32),
+                       DAG.getTargetConstant(ArgMode, dl, MVT::i8),
+                       DAG.getTargetConstant(Align, dl, MVT::i32)};
   SDVTList VTs = DAG.getVTList(getPointerTy(DAG.getDataLayout()), MVT::Other);
   SDValue VAARG = DAG.getMemIntrinsicNode(
       X86ISD::VAARG_64, dl, VTs, InstOps, MVT::i64, MachinePointerInfo(SV),

llvm/lib/Target/X86/X86InstrCompiler.td

@@ -89,7 +89,7 @@ def VAARG_64 : I<0, Pseudo,
                  (ins i8mem:$ap, i32imm:$size, i8imm:$mode, i32imm:$align),
                  "#VAARG_64 $dst, $ap, $size, $mode, $align",
                  [(set GR64:$dst,
-                    (X86vaarg64 addr:$ap, imm:$size, imm:$mode, imm:$align)),
+                    (X86vaarg64 addr:$ap, timm:$size, timm:$mode, timm:$align)),
                   (implicit EFLAGS)]>;