Mesa (master): util: (trivial) add has_popcnt field
Roland Scheidegger
sroland at kemper.freedesktop.org
Wed Jun 19 21:53:04 UTC 2013
Module: Mesa
Branch: master
Commit: ffebefa11424411d7e54a3a1223fe87a2de6e596
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=ffebefa11424411d7e54a3a1223fe87a2de6e596
Author: Roland Scheidegger <sroland at vmware.com>
Date: Wed Jun 19 23:46:15 2013 +0200
util: (trivial) add has_popcnt field
Not used yet but there's a couple of places in llvmpipe which should use this
(occlusion count is currently very inefficent if there's no cpu popcnt
instruction).
---
src/gallium/auxiliary/util/u_cpu_detect.c | 1 +
src/gallium/auxiliary/util/u_cpu_detect.h | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c
index 763b5cc..b118fc8 100644
--- a/src/gallium/auxiliary/util/u_cpu_detect.c
+++ b/src/gallium/auxiliary/util/u_cpu_detect.c
@@ -283,6 +283,7 @@ util_cpu_detect(void)
util_cpu_caps.has_ssse3 = (regs2[2] >> 9) & 1; /* 0x0000020 */
util_cpu_caps.has_sse4_1 = (regs2[2] >> 19) & 1;
util_cpu_caps.has_sse4_2 = (regs2[2] >> 20) & 1;
+ util_cpu_caps.has_popcnt = (regs2[2] >> 23) & 1;
util_cpu_caps.has_avx = (regs2[2] >> 28) & 1;
util_cpu_caps.has_f16c = (regs2[2] >> 29) & 1;
util_cpu_caps.has_mmx2 = util_cpu_caps.has_sse; /* SSE cpus supports mmxext too */
diff --git a/src/gallium/auxiliary/util/u_cpu_detect.h b/src/gallium/auxiliary/util/u_cpu_detect.h
index 21c2f04..f9cd647 100644
--- a/src/gallium/auxiliary/util/u_cpu_detect.h
+++ b/src/gallium/auxiliary/util/u_cpu_detect.h
@@ -62,6 +62,7 @@ struct util_cpu_caps {
unsigned has_ssse3:1;
unsigned has_sse4_1:1;
unsigned has_sse4_2:1;
+ unsigned has_popcnt:1;
unsigned has_avx:1;
unsigned has_f16c:1;
unsigned has_3dnow:1;
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