From: Sanjay Patel <spatel@rotateright.com>
Date: Tue, 1 Dec 2015 17:27:55 +0000 (+0000)
Subject: [x86] add a convenience method to check for FMA capability; NFCI
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=40adef82a5ba533fb6a1c60789f396c2baa976cc

[x86] add a convenience method to check for FMA capability; NFCI


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254425 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 4ec4ec28067..7ddcd8fcda4 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -1148,7 +1148,7 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM,
     setOperationAction(ISD::CTTZ_ZERO_UNDEF,   MVT::v8i32, Custom);
     setOperationAction(ISD::CTTZ_ZERO_UNDEF,   MVT::v4i64, Custom);
 
-    if (Subtarget->hasFMA() || Subtarget->hasFMA4() || Subtarget->hasAVX512()) {
+    if (Subtarget->hasAnyFMA()) {
       setOperationAction(ISD::FMA,             MVT::v8f32, Legal);
       setOperationAction(ISD::FMA,             MVT::v4f64, Legal);
       setOperationAction(ISD::FMA,             MVT::v4f32, Legal);
@@ -20463,7 +20463,7 @@ bool X86TargetLowering::isVectorLoadExtDesirable(SDValue) const { return true; }
 
 bool
 X86TargetLowering::isFMAFasterThanFMulAndFAdd(EVT VT) const {
-  if (!(Subtarget->hasFMA() || Subtarget->hasFMA4() || Subtarget->hasAVX512()))
+  if (!Subtarget->hasAnyFMA())
     return false;
 
   VT = VT.getScalarType();
@@ -26471,9 +26471,7 @@ static SDValue PerformFMACombine(SDNode *N, SelectionDAG &DAG,
     return SDValue();
 
   EVT ScalarVT = VT.getScalarType();
-  if ((ScalarVT != MVT::f32 && ScalarVT != MVT::f64) ||
-      (!Subtarget->hasFMA() && !Subtarget->hasFMA4() &&
-       !Subtarget->hasAVX512()))
+  if ((ScalarVT != MVT::f32 && ScalarVT != MVT::f64) || !Subtarget->hasAnyFMA())
     return SDValue();
 
   SDValue A = N->getOperand(0);
diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index eb0199aecbe..353b4f7f5eb 100644
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -358,6 +358,7 @@ public:
   // has equal or better performance on all supported targets.
   bool hasFMA() const { return HasFMA && !HasFMA4; }
   bool hasFMA4() const { return HasFMA4; }
+  bool hasAnyFMA() const { return hasFMA() || hasFMA4() || hasAVX512(); }
   bool hasXOP() const { return HasXOP; }
   bool hasTBM() const { return HasTBM; }
   bool hasMOVBE() const { return HasMOVBE; }