[Mesa-dev] [PATCH 1/2] mesa/x86: add SSE4.1 runtime detection

[Matthew Atwood]

From: Matt Atwood <matthew.s.atwood at intel.com>

add in bit to _mesa_x86_features for sse4.1, along with macros to query
---
 src/mesa/x86/common_x86.c          | 3 +++
 src/mesa/x86/common_x86_features.h | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/src/mesa/x86/common_x86.c b/src/mesa/x86/common_x86.c
index 3c1adc9..87fa68a 100644
--- a/src/mesa/x86/common_x86.c
+++ b/src/mesa/x86/common_x86.c
@@ -238,6 +238,7 @@ _mesa_get_x86_features(void)
 
        /* get cpu features */
        cpu_features = _mesa_x86_cpuid_edx(1);
+       cpu_features_ecx = _mesa_x86_cpuid_ecx(1);
 
        if (cpu_features & X86_CPU_FPU)
 	   _mesa_x86_cpu_features |= X86_FEATURE_FPU;
@@ -254,6 +255,8 @@ _mesa_get_x86_features(void)
 	   _mesa_x86_cpu_features |= X86_FEATURE_XMM;
        if (cpu_features & X86_CPU_XMM2)
 	   _mesa_x86_cpu_features |= X86_FEATURE_XMM2;
+       if (cpu_features & x86_CPU_SSE4_1)
+	   _mesa_x86_features |= X86_FEATURE_SSE4_1;
 #endif
 
        /* query extended cpu features */
diff --git a/src/mesa/x86/common_x86_features.h b/src/mesa/x86/common_x86_features.h
index 8625484..1e4bbfc 100644
--- a/src/mesa/x86/common_x86_features.h
+++ b/src/mesa/x86/common_x86_features.h
@@ -43,6 +43,7 @@
 #define X86_FEATURE_XMM2	(1<<6)
 #define X86_FEATURE_3DNOWEXT	(1<<7)
 #define X86_FEATURE_3DNOW	(1<<8)
+#define X86_FEATURE_SSE4_1	(1<<9)
 
 /* standard X86 CPU features */
 #define X86_CPU_FPU		(1<<0)
@@ -50,6 +51,7 @@
 #define X86_CPU_MMX		(1<<23)
 #define X86_CPU_XMM		(1<<25)
 #define X86_CPU_XMM2		(1<<26)
+#define X86_CPU_SSE4_1		(1<<19)
 
 /* extended X86 CPU features */
 #define X86_CPUEXT_MMX_EXT	(1<<22)
@@ -62,6 +64,7 @@
 #define cpu_has_xmm2		(_mesa_x86_cpu_features & X86_FEATURE_XMM2)
 #define cpu_has_3dnow		(_mesa_x86_cpu_features & X86_FEATURE_3DNOW)
 #define cpu_has_3dnowext	(_mesa_x86_cpu_features & X86_FEATURE_3DNOWEXT)
+#define cpu_has_sse4_1		(_mesa_x86_cpu_features & X86_FEATURE_SSE4_1)
 
 #endif
 
-- 
1.8.3.2