[llvm-commits] [llvm] r121677 - in /llvm/trunk/lib/Target/X86: X86.td X86Subtarget.cpp

[Evan Cheng]

Author: evancheng
Date: Sun Dec 12 22:23:53 2010
New Revision: 121677

URL: http://llvm.org/viewvc/llvm-project?rev=121677&view=rev
Log:
Disable auto-detection of AVX support since AVX codegen support is not ready.

Modified:
    llvm/trunk/lib/Target/X86/X86.td
    llvm/trunk/lib/Target/X86/X86Subtarget.cpp

Modified: llvm/trunk/lib/Target/X86/X86.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86.td?rev=121677&r1=121676&r2=121677&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86.td (original)
+++ llvm/trunk/lib/Target/X86/X86.td Sun Dec 12 22:23:53 2010
@@ -120,7 +120,9 @@
                                FeatureFastUAMem, FeatureAES, FeatureCLMUL]>;
 // SSE is not listed here since llvm treats AVX as a reimplementation of SSE,
 // rather than a superset.
-def : Proc<"sandybridge",     [FeatureAVX, FeatureAES, FeatureCLMUL, Feature64Bit]>;
+// FIXME: Disabling AVX for now since it's not ready.
+def : Proc<"sandybridge",     [FeatureSSE42, Feature64Bit,
+                               FeatureAES, FeatureCLMUL]>;
 
 def : Proc<"k6",              [FeatureMMX]>;
 def : Proc<"k6-2",            [FeatureMMX,    Feature3DNow]>;

Modified: llvm/trunk/lib/Target/X86/X86Subtarget.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86Subtarget.cpp?rev=121677&r1=121676&r2=121677&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86Subtarget.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86Subtarget.cpp Sun Dec 12 22:23:53 2010
@@ -256,7 +256,8 @@
   if ((ECX >> 9)  & 1) X86SSELevel = SSSE3;
   if ((ECX >> 19) & 1) X86SSELevel = SSE41;
   if ((ECX >> 20) & 1) X86SSELevel = SSE42;
-  if ((ECX >> 28) & 1) { HasAVX = true; X86SSELevel = NoMMXSSE; }
+  // FIXME: AVX codegen support is not ready.
+  //if ((ECX >> 28) & 1) { HasAVX = true; X86SSELevel = NoMMXSSE; }
 
   bool IsIntel = memcmp(text.c, "GenuineIntel", 12) == 0;
   bool IsAMD   = !IsIntel && memcmp(text.c, "AuthenticAMD", 12) == 0;