From: Debian Julia Team <pkg-julia-devel@lists.alioth.debian.org>
Date: Sat, 2 Mar 2019 23:41:50 +0000 (+0000)
Subject: require-sse2-on-i386
X-Git-Tag: archive/raspbian/1.0.4+dfsg-1+rpi1~18
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=fb615cb4b687624112c04efddba683c8b7511e96;p=julia.git

require-sse2-on-i386


Gbp-Pq: Name require-sse2-on-i386.patch
---

diff --git a/src/codegen.cpp b/src/codegen.cpp
index 89a9727..5201b2a 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -26,6 +26,9 @@
 #endif
 
 #include <setjmp.h>
+#ifdef __i386__
+#include <cpuid.h>
+#endif
 #include <string>
 #include <sstream>
 #include <fstream>
@@ -7378,6 +7381,15 @@ static void init_julia_llvm_env(Module *m)
 
 extern "C" void *jl_init_llvm(void)
 {
+#ifdef __i386__
+    unsigned int eax = 0, ebx = 0, ecx = 0, edx = 0;
+    __get_cpuid(1, &eax, &ebx, &ecx, &edx);
+    if (!(edx & bit_SSE2)) {
+        fprintf(stderr, "Your processor does not have SSE2 extension, which is required by Julia. Exiting.\n");
+        exit(EXIT_FAILURE);
+    }
+#endif
+
     const char *const argv_tailmerge[] = {"", "-enable-tail-merge=0"}; // NOO TOUCHIE; NO TOUCH! See #922
     cl::ParseCommandLineOptions(sizeof(argv_tailmerge)/sizeof(argv_tailmerge[0]), argv_tailmerge, "disable-tail-merge\n");
 #if defined(_OS_WINDOWS_) && defined(_CPU_X86_64_)