From 06613b7b3a641b66400f09993a884daf7ab34509 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 7 Apr 2011 13:43:00 -0600 Subject: [PATCH] llvmpipe: document issue with LLVM 2.8 and earlier with AVX --- src/gallium/drivers/llvmpipe/README | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/gallium/drivers/llvmpipe/README b/src/gallium/drivers/llvmpipe/README index 1fc7746a834..cd0e476e73b 100644 --- a/src/gallium/drivers/llvmpipe/README +++ b/src/gallium/drivers/llvmpipe/README @@ -13,6 +13,10 @@ Requirements See /proc/cpuinfo to know what your CPU supports. - LLVM. Version 2.8 recommended. 2.6 or later required. + + NOTE: LLVM 2.8 and earlier will not work on systems that support the + Intel AVX extensions (e.g. Sandybridge). LLVM's code generator will + fail when trying to emit AVX instructions. This was fixed in LLVM 2.9. For Linux, on a recent Debian based distribution do: -- 2.30.2