Handle fp80 for win64

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50324 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86CallingConv.td b/lib/Target/X86/X86CallingConv.td
index b2a02e4a38723abbf826ebabc6afcdccd08b3cc1..e32a891eba150bdedb6837e792bc3aa15e882069 100644 (file)
--- a/lib/Target/X86/X86CallingConv.td
+++ b/lib/Target/X86/X86CallingConv.td
@@ -165,7 +165,6 @@ def CC_X86_64_C : CallingConv<[
 // Calling convention used on Win64
 def CC_X86_Win64_C : CallingConv<[
   // FIXME: Handle byval stuff.
-  // FIXME: Handle fp80.
   // FIXME: Handle varargs.
 
   // Promote i8/i16 arguments to i32.
@@ -194,6 +193,10 @@ def CC_X86_Win64_C : CallingConv<[
   // 16-byte aligned if there are no more registers to hold them.
   CCIfType<[i32, i64, f32, f64], CCAssignToStack<8, 16>>,
 
+  // Long doubles get stack slots whose size and alignment depends on the
+  // subtarget.
+  CCIfType<[f80], CCAssignToStack<0, 0>>,
+
   // Vectors get 16-byte stack slots that are 16-byte aligned.
   CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>,