Enable detection of AVX and AVX2 support through CPUID. Add AVX/AVX2 to corei7-avx...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155618 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86.td b/lib/Target/X86/X86.td
index b6591d4419690f1cd7261862c31696f3cd0db9be..90a724b7aaa27a00e399462d0f143026e23f993d 100644 (file)
--- a/lib/Target/X86/X86.td
+++ b/lib/Target/X86/X86.td
@@ -173,21 +173,19 @@ def : Proc<"westmere",        [FeatureSSE42, FeatureCMPXCHG16B,
 // Sandy Bridge
 // SSE is not listed here since llvm treats AVX as a reimplementation of SSE,
 // rather than a superset.
-// FIXME: Disabling AVX for now since it's not ready.
-def : Proc<"corei7-avx",      [FeatureSSE42, FeatureCMPXCHG16B, FeaturePOPCNT,
+def : Proc<"corei7-avx",      [FeatureAVX, FeatureCMPXCHG16B, FeaturePOPCNT,
                                FeatureAES, FeatureCLMUL]>;
 // Ivy Bridge
-def : Proc<"core-avx-i",      [FeatureSSE42, FeatureCMPXCHG16B, FeaturePOPCNT,
+def : Proc<"core-avx-i",      [FeatureAVX, FeatureCMPXCHG16B, FeaturePOPCNT,
                                FeatureAES, FeatureCLMUL,
                                FeatureRDRAND, FeatureF16C, FeatureFSGSBase]>;
 
 // Haswell
-// FIXME: Disabling AVX/AVX2/FMA3 for now since it's not ready.
-def : Proc<"core-avx2",       [FeatureSSE42, FeatureCMPXCHG16B, FeaturePOPCNT,
+def : Proc<"core-avx2",       [FeatureAVX2, FeatureCMPXCHG16B, FeaturePOPCNT,
                                FeatureAES, FeatureCLMUL, FeatureRDRAND,
                                FeatureF16C, FeatureFSGSBase,
                                FeatureMOVBE, FeatureLZCNT, FeatureBMI,
-                               FeatureBMI2]>;
+                               FeatureBMI2, FeatureFMA3]>;
 
 def : Proc<"k6",              [FeatureMMX]>;
 def : Proc<"k6-2",            [Feature3DNow]>;

diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index 452dd7eba326e009f6843e4fc4c53a2919818fc6..fbc5b8ca95ddd3f6ccae2c1bfabaeb1a15b27807 100644 (file)
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -196,8 +196,7 @@ void X86Subtarget::AutoDetectSubtargetFeatures() {
   if ((ECX >> 9)  & 1) { X86SSELevel = SSSE3; ToggleFeature(X86::FeatureSSSE3);}
   if ((ECX >> 19) & 1) { X86SSELevel = SSE41; ToggleFeature(X86::FeatureSSE41);}
   if ((ECX >> 20) & 1) { X86SSELevel = SSE42; ToggleFeature(X86::FeatureSSE42);}
-  // FIXME: AVX codegen support is not ready.
-  //if ((ECX >> 28) & 1) { X86SSELevel = AVX;  ToggleFeature(X86::FeatureAVX); }
+  if ((ECX >> 28) & 1) { X86SSELevel = AVX;   ToggleFeature(X86::FeatureAVX); }
 
   bool IsIntel = memcmp(text.c, "GenuineIntel", 12) == 0;
   bool IsAMD   = !IsIntel && memcmp(text.c, "AuthenticAMD", 12) == 0;
@@ -299,11 +298,10 @@ void X86Subtarget::AutoDetectSubtargetFeatures() {
         HasBMI = true;
         ToggleFeature(X86::FeatureBMI);
       }
-      // FIXME: AVX2 codegen support is not ready.
-      //if ((EBX >> 5) & 0x1) {
-      //  X86SSELevel = AVX2;
-      //  ToggleFeature(X86::FeatureAVX2);
-      //}
+      if ((EBX >> 5) & 0x1) {
+        X86SSELevel = AVX2;
+        ToggleFeature(X86::FeatureAVX2);
+      }
       if ((EBX >> 8) & 0x1) {
         HasBMI2 = true;
         ToggleFeature(X86::FeatureBMI2);