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[Qemu-devel] [PATCHv5 02/10] add a zero splat vector to qemu-common.h
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCHv5 02/10] add a zero splat vector to qemu-common.h |
Date: |
Tue, 26 Mar 2013 10:58:31 +0100 |
Signed-off-by: Peter Lieven <address@hidden>
---
include/qemu-common.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/qemu-common.h b/include/qemu-common.h
index d7ad3a7..9022646 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -453,6 +453,7 @@ void hexdump(const char *buf, FILE *fp, const char *prefix,
size_t size);
#include <altivec.h>
#define VECTYPE vector unsigned char
#define SPLAT(p) vec_splat(vec_ld(0, p), 0)
+#define ZERO_SPLAT vec_splat(vec_ld(0, 0), 0)
#define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
/* altivec.h may redefine the bool macro as vector type.
* Reset it to POSIX semantics. */
@@ -462,10 +463,12 @@ void hexdump(const char *buf, FILE *fp, const char
*prefix, size_t size);
#include <emmintrin.h>
#define VECTYPE __m128i
#define SPLAT(p) _mm_set1_epi8(*(p))
+#define ZERO_SPLAT _mm_setzero_si128()
#define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
#else
#define VECTYPE unsigned long
#define SPLAT(p) (*(p) * (~0UL / 255))
+#define ZERO_SPLAT 0x0UL
#define ALL_EQ(v1, v2) ((v1) == (v2))
#endif
--
1.7.9.5
- [Qemu-devel] [PATCHv5 00/10] buffer_is_zero / migration optimizations, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 04/10] buffer_is_zero: use vector optimizations if possible, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 05/10] bitops: unroll while loop in find_next_bit(), Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 08/10] migration: do not sent zero pages in bulk stage, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 09/10] migration: do not search dirty pages in bulk stage, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 07/10] migration: add an indicator for bulk state of ram migration, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 06/10] migration: search for zero instead of dup pages, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 10/10] migration: use XBZRLE only after bulk stage, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 01/10] move vector definitions to qemu-common.h, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 02/10] add a zero splat vector to qemu-common.h,
Peter Lieven <=
[Qemu-devel] [PATCHv5 03/10] cutils: add a function to find non-zero content in a buffer, Peter Lieven, 2013/03/26
Re: [Qemu-devel] [PATCHv5 00/10] buffer_is_zero / migration optimizations, Juan Quintela, 2013/03/26