[x264-devel] x86inc: create xm# and ym#, analagous to m#

[Loren Merritt]

x264 | branch: master | Loren Merritt <pengvado at akuvian.org> | Mon Feb 25 21:16:45 2013 +0000| [da592fbb48d703cc5ac1fbedef696d414f0ecb2f] | committer: Jason Garrett-Glaser

x86inc: create xm# and ym#, analagous to m#

For when we want to mix simd sizes within one function.

> http://git.videolan.org/gitweb.cgi/x264.git/?a=commit;h=da592fbb48d703cc5ac1fbedef696d414f0ecb2f
---

 common/x86/x86inc.asm |   26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/common/x86/x86inc.asm b/common/x86/x86inc.asm
index ea3371e..bd85eb4 100644
--- a/common/x86/x86inc.asm
+++ b/common/x86/x86inc.asm
@@ -785,7 +785,11 @@ SECTION .note.GNU-stack noalloc noexec nowrite progbits
     %endif
 %endmacro
 
-; merge mmx and sse*
+; Merge mmx and sse*
+; m# is a simd regsiter of the currently selected size
+; xm# is the corresponding xmmreg (if selcted xmm or ymm size), or mmreg (if selected mmx)
+; ym# is the corresponding ymmreg (if selcted xmm or ymm size), or mmreg (if selected mmx)
+; (All 3 remain in sync through SWAP.)
 
 %macro CAT_XDEFINE 3
     %xdefine %1%2 %3
@@ -862,6 +866,26 @@ SECTION .note.GNU-stack noalloc noexec nowrite progbits
 
 INIT_XMM
 
+%macro DECLARE_MMCAST 1
+    %define  mmmm%1   mm%1
+    %define  mmxmm%1  mm%1
+    %define  mmymm%1  mm%1
+    %define xmmmm%1   mm%1
+    %define xmmxmm%1 xmm%1
+    %define xmmymm%1 xmm%1
+    %define ymmmm%1   mm%1
+    %define ymmxmm%1 ymm%1
+    %define ymmymm%1 ymm%1
+    %define xm%1 xmm %+ m%1
+    %define ym%1 ymm %+ m%1
+%endmacro
+
+%assign i 0
+%rep 16
+    DECLARE_MMCAST i
+%assign i i+1
+%endrep
+
 ; I often want to use macros that permute their arguments. e.g. there's no
 ; efficient way to implement butterfly or transpose or dct without swapping some
 ; arguments.