[Pixman] [PATCH] MIPS: skip runtime detection for DSPr2 if -mdspr2 option is in CFLAGS

[Siarhei Siamashka]

This provides a way to enable MIPS DSP ASE optimizations if running
under qemu-user (where /proc/cpuinfo contains information about the
host processor instead of the emulated one). Can be used for running
pixman test suite in qemu-user when having no access to real MIPS
hardware.
---
 pixman/pixman-mips.c |   16 +++++++++++++---
 1 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/pixman/pixman-mips.c b/pixman/pixman-mips.c
index 2b280c6..3048813 100644
--- a/pixman/pixman-mips.c
+++ b/pixman/pixman-mips.c
@@ -75,9 +75,19 @@ _pixman_mips_get_implementations (pixman_implementation_t *imp)
 #endif
 
 #ifdef USE_MIPS_DSPR2
-    /* Only currently available MIPS core that supports DSPr2 is 74K. */
-    if (!_pixman_disabled ("mips-dspr2") && have_feature ("MIPS 74K"))
-	imp = _pixman_implementation_create_mips_dspr2 (imp);
+    if (!_pixman_disabled ("mips-dspr2"))
+    {
+	int already_compiling_everything_for_dspr2 = 0;
+#if defined(__mips_dsp) && (__mips_dsp_rev >= 2)
+	already_compiling_everything_for_dspr2 = 1;
+#endif
+	if (already_compiling_everything_for_dspr2 ||
+	    /* Only currently available MIPS core that supports DSPr2 is 74K. */
+	    have_feature ("MIPS 74K"))
+	{
+	    imp = _pixman_implementation_create_mips_dspr2 (imp);
+	}
+    }
 #endif
 
     return imp;
-- 
1.7.8.6