Start moving sparc to use SparcCallingConv.td, switching over

return lowering first.  This fixes a bug where the top and bottom
of i64 values were returned in the wrong registers before.

llvm-svn: 48443

1 files changed, 23 insertions, 0 deletions

diff --git a/llvm/lib/Target/Sparc/SparcCallingConv.td b/llvm/lib/Target/Sparc/SparcCallingConv.td
new file mode 100644
index 00000000000..02d24397e6d
--- /dev/null
+++ b/llvm/lib/Target/Sparc/SparcCallingConv.td
@@ -0,0 +1,23 @@
+//===- SparcCallingConv.td - Calling Conventions Sparc -----*- tablegen -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// This describes the calling conventions for the Sparc architectures.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Return Value Calling Conventions
+//===----------------------------------------------------------------------===//
+
+// Sparc 32-bit C return-value convention.
+def RetCC_Sparc32 : CallingConv<[
+  CCIfType<[i32], CCAssignToReg<[I0, I1]>>,
+  CCIfType<[f32], CCAssignToReg<[F0]>>,
+  CCIfType<[f64], CCAssignToReg<[D0]>>
+]>;