Use the same CALL instructions for Windows as for everything else.

The different calling conventions and call-preserved registers are
represented with regmask operands that are added dynamically.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150708 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index 6ab218a..efc4c06 100644
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -1793,9 +1793,7 @@
   if (CalleeOp) {
     // Register-indirect call.
     unsigned CallOpc;
-    if (Subtarget->isTargetWin64())
-      CallOpc = X86::WINCALL64r;
-    else if (Subtarget->is64Bit())
+    if (Subtarget->is64Bit())
       CallOpc = X86::CALL64r;
     else
       CallOpc = X86::CALL32r;
@@ -1806,9 +1804,7 @@
     // Direct call.
     assert(GV && "Not a direct call");
     unsigned CallOpc;
-    if (Subtarget->isTargetWin64())
-      CallOpc = X86::WINCALL64pcrel32;
-    else if (Subtarget->is64Bit())
+    if (Subtarget->is64Bit())
       CallOpc = X86::CALL64pcrel32;
     else
       CallOpc = X86::CALLpcrel32;