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authorBrian Paul <brianp@vmware.com>2011-04-07 13:43:00 -0600
committerBrian Paul <brianp@vmware.com>2011-04-07 13:43:00 -0600
commit06613b7b3a641b66400f09993a884daf7ab34509 (patch)
tree03d7a0af86015b5e62303b8dde4b8877c713edb8 /src/gallium/drivers/llvmpipe
parentef2c80f5064b2d1830cea5bbcacde850138d54c4 (diff)
llvmpipe: document issue with LLVM 2.8 and earlier with AVX
Diffstat (limited to 'src/gallium/drivers/llvmpipe')
-rw-r--r--src/gallium/drivers/llvmpipe/README4
1 files changed, 4 insertions, 0 deletions
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: