llvmpipe: Emit SSE intrinsics based on runtime cpu capability check.

Note that llvmpipe still doesn't run on any processor yet: if you don't
have a recent processor with SSE4.1 you will still likely end up
hitting a code path for which a generic non-sse4 version is not
implemented yet.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_bld_logic.c b/src/gallium/drivers/llvmpipe/lp_bld_logic.c
index 6b6f820769..db22a8028a 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_logic.c
+++ b/src/gallium/drivers/llvmpipe/lp_bld_logic.c
@@ -33,6 +33,8 @@
  */
 
 
+#include "util/u_cpu_detect.h"
+
 #include "lp_bld_type.h"
 #include "lp_bld_const.h"
 #include "lp_bld_intr.h"
@@ -65,7 +67,7 @@ lp_build_cmp(struct lp_build_context *bld,
 
 #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
    if(type.width * type.length == 128) {
-      if(type.floating) {
+      if(type.floating && util_cpu_caps.has_sse) {
          LLVMValueRef args[3];
          unsigned cc;
          boolean swap;
@@ -114,7 +116,7 @@ lp_build_cmp(struct lp_build_context *bld,
          res = LLVMBuildBitCast(bld->builder, res, int_vec_type, "");
          return res;
       }
-      else {
+      else if(util_cpu_caps.has_sse2) {
          static const struct {
             unsigned swap:1;
             unsigned eq:1;