[llvm-commits] [llvm] r37844 - /llvm/trunk/lib/Target/X86/X86CallingConv.td

[Dan Gohman]

Author: djg
Date: Mon Jul  2 11:21:53 2007
New Revision: 37844

URL: http://llvm.org/viewvc/llvm-project?rev=37844&view=rev
Log:
Vector results may be returned in XMM0 and XMM1, not just XMM0. With
the recent lowering changes, this allows types like <4 x double> to
be returned, using two vector registers.

Modified:
    llvm/trunk/lib/Target/X86/X86CallingConv.td

Modified: llvm/trunk/lib/Target/X86/X86CallingConv.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86CallingConv.td?rev=37844&r1=37843&r2=37844&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86CallingConv.td (original)
+++ llvm/trunk/lib/Target/X86/X86CallingConv.td Mon Jul  2 11:21:53 2007
@@ -28,9 +28,10 @@
   CCIfType<[i32], CCAssignToReg<[EAX, EDX]>>,
   CCIfType<[i64], CCAssignToReg<[RAX, RDX]>>,
   
-  // Vector types are always returned in XMM0.  If the target doesn't have XMM0,
-  // it won't have vector types.
-  CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToReg<[XMM0]>>,
+  // Vector types are returned in XMM0 and XMM1, when they fit.  If the target
+  // doesn't have XMM registers, it won't have vector types.
+  CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
+            CCAssignToReg<[XMM0,XMM1]>>,
 
   // MMX vector types are always returned in MM0. If the target doesn't have
   // MM0, it doesn't support these vector types.