ref: 675298216d24c7c9ad73140cd7d81acf28648a30
parent: 38a20e030f442fb8dfa1e596c98500bd35919e6f
parent: 7d243701d986b8b7fa2d3148e7a09b52cffd272a
author: John Koleszar <jkoleszar@google.com>
date: Mon Aug 2 02:16:26 EDT 2010
Merge "Replace pinsrw (SSE) with MMX instructions"
--- a/vp8/decoder/x86/dequantize_mmx.asm
+++ b/vp8/decoder/x86/dequantize_mmx.asm
@@ -261,8 +261,6 @@
mov rax, arg(0) ;input
mov rdx, arg(1) ;dq
- movsxd rcx, dword ptr arg(6) ;Dc
-
movq mm0, [rax ]
pmullw mm0, [rdx]
@@ -286,8 +284,13 @@
movq [rax+16],mm7
movq [rax+24],mm7
+ ; move lower word of Dc to lower word of mm0
+ psrlq mm0, 16
+ movzx rcx, word ptr arg(6) ;Dc
+ psllq mm0, 16
+ movd mm7, rcx
+ por mm0, mm7
- pinsrw mm0, rcx, 0
movsxd rax, dword ptr arg(4) ;pitch
movsxd rdi, dword ptr arg(5) ;stride