On Darwin targets, only use vfma etc. if the source use fma() intrinsic explicitly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154689 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 3caaa23..af0cafb 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -219,8 +219,11 @@
 
 // Prefer fused MAC for fp mul + add over fp VMLA / VMLS if they are available.
 // But only select them if more precision in FP computation is allowed.
-def UseFusedMAC      : Predicate<"!TM.Options.NoExcessFPPrecision">;
-def DontUseFusedMAC  : Predicate<"!Subtarget->hasVFP4()">;
+// Do not use them for Darwin platforms.
+def UseFusedMAC      : Predicate<"!TM.Options.NoExcessFPPrecision && "
+                                 "!Subtarget->isTargetDarwin()">;
+def DontUseFusedMAC  : Predicate<"!Subtarget->hasVFP4() || "
+                                 "Subtarget->isTargetDarwin()">;
 
 //===----------------------------------------------------------------------===//
 // ARM Flag Definitions.
diff --git a/test/CodeGen/ARM/fusedMAC.ll b/test/CodeGen/ARM/fusedMAC.ll
index a8b3999..802d1b8 100644
--- a/test/CodeGen/ARM/fusedMAC.ll
+++ b/test/CodeGen/ARM/fusedMAC.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -march=arm -mattr=+neon,+vfp4 | FileCheck %s
+; RUN: llc < %s -mtriple=armv7-eabi -mattr=+neon,+vfp4 | FileCheck %s
 ; Check generated fused MAC and MLS.
 
 define double @fusedMACTest1(double %d1, double %d2, double %d3) {