use PSHUFD for longlong-2 broadcast when dst != src to avoid a %copy

2009-09-28 12:04:08 -05:00 · 2009-09-28 12:04:08 -05:00 · 01f526ff28
parent 7520da41cc
commit 01f526ff28
1 changed files with 5 additions and 2 deletions
--- a/basis/cpu/x86/x86.factor
+++ b/basis/cpu/x86/x86.factor
@ -596,8 +596,11 @@ M:: x86 %broadcast-vector ( dst src rep -- )
            dst src MOVDDUP
        ] }
        { longlong-2-rep [
-            dst src longlong-2-rep %copy
-            dst dst PUNPCKLQDQ
+            dst src = [
+                dst dst PUNPCKLQDQ
+            ] [
+                dst src { 0 1 0 1 } PSHUFD
+            ] if
        ] }
        { int-4-rep      [ dst src { 0 0 0 0 } PSHUFD ] }
        { short-8-rep    [