Remove checks to see if system's processor matches the target the code was compiled for.

(Preparation for multi-target output.)

examples/mandelbrot_tasks/mandelbrot.cpp

@@ -42,7 +42,6 @@
 #include <algorithm>
 #include <string.h>
 #include "../timing.h"
-#include "../cpuid.h"
 #include "mandelbrot_ispc.h"
 using namespace ispc;
 
@@ -69,37 +68,6 @@ writePPM(int *buf, int width, int height, const char *fn) {
 }
 
 
-// Make sure that the vector ISA used during compilation is supported by
-// the processor.  The ISPC_TARGET_* macro is set in the ispc-generated
-// header file that we include above.
-static void
-ensureTargetISAIsSupported() {
-#if defined(ISPC_TARGET_SSE2)
-    bool isaSupported = CPUSupportsSSE2();
-    const char *target = "SSE2";
-#elif defined(ISPC_TARGET_SSE4)
-    bool isaSupported = CPUSupportsSSE4();
-    const char *target = "SSE4";
-#elif defined(ISPC_TARGET_AVX)
-    bool isaSupported = CPUSupportsAVX();
-    const char *target = "AVX";
-#else
-#error "Unknown ISPC_TARGET_* value"
-#endif
-    if (!isaSupported) {
-        fprintf(stderr, "***\n*** Error: the ispc-compiled code uses the %s instruction "
-                "set, which isn't\n***        supported by this computer's CPU!\n", target);
-        fprintf(stderr, "***\n***        Please modify the "
-#ifdef _MSC_VER
-                "MSVC project file "
-#else
-                "Makefile "
-#endif
-                "to select another target (e.g. sse2)\n***\n");
-        exit(1);
-    }
-}
-
 static void usage() {
     fprintf(stderr, "usage: mandelbrot [--scale=<factor>]\n");
     exit(1);
@@ -132,8 +100,6 @@ int main(int argc, char *argv[]) {
     else
         usage();
 
-    ensureTargetISAIsSupported();
-
     int maxIterations = 512;
     int *buf = new int[width*height];