vendor/llvm/llvm-trunk-r321414

1 files changed, 11 insertions, 3 deletions

diff --git a/include/llvm/CodeGen/BasicTTIImpl.h b/include/llvm/CodeGen/BasicTTIImpl.h
index bb5e7f9e8e30f..f1f9275b0786c 100644
--- a/include/llvm/CodeGen/BasicTTIImpl.h
+++ b/include/llvm/CodeGen/BasicTTIImpl.h
@@ -302,9 +302,13 @@ public:
   }
 
   unsigned getFPOpCost(Type *Ty) {
-    // By default, FP instructions are no more expensive since they are
-    // implemented in HW.  Target specific TTI can override this.
-    return TargetTransformInfo::TCC_Basic;
+    // Check whether FADD is available, as a proxy for floating-point in
+    // general.
+    const TargetLoweringBase *TLI = getTLI();
+    EVT VT = TLI->getValueType(DL, Ty);
+    if (TLI->isOperationLegalOrCustomOrPromote(ISD::FADD, VT))
+      return TargetTransformInfo::TCC_Basic;
+    return TargetTransformInfo::TCC_Expensive;
   }
 
   unsigned getOperationCost(unsigned Opcode, Type *Ty, Type *OpTy) {
@@ -398,6 +402,10 @@ public:
     return BaseT::getInstructionLatency(I);
   }
 
+  bool isOutOfOrder() const {
+    return getST()->getSchedModel().isOutOfOrder();
+  }
+
   /// @}
 
   /// \name Vector TTI Implementations