Add feature flags for AVX and FMA and fix some SSE4A feature flag
initialization problems.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74350 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index 56983ce..8506fa6 100644
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -207,6 +207,10 @@
bool IsIntel = memcmp(text.c, "GenuineIntel", 12) == 0;
bool IsAMD = !IsIntel && memcmp(text.c, "AuthenticAMD", 12) == 0;
+
+ HasFMA3 = IsIntel && ((ECX >> 12) & 0x1);
+ HasAVX = ((ECX >> 28) & 0x1);
+
if (IsIntel || IsAMD) {
// Determine if bit test memory instructions are slow.
unsigned Family = 0;
@@ -217,6 +221,7 @@
X86::GetCpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
HasX86_64 = (EDX >> 29) & 0x1;
HasSSE4A = IsAMD && ((ECX >> 6) & 0x1);
+ HasFMA4 = IsAMD && ((ECX >> 16) & 0x1);
}
}
@@ -342,6 +347,10 @@
, X86SSELevel(NoMMXSSE)
, X863DNowLevel(NoThreeDNow)
, HasX86_64(false)
+ , HasSSE4A(false)
+ , HasAVX(false)
+ , HasFMA3(false)
+ , HasFMA4(false)
, IsBTMemSlow(false)
, DarwinVers(0)
, IsLinux(false)