[AArch64][GlobalISel] Clarify fallback debug print

... to only print when that fallback actually happens.

diff --git a/llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp b/llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp
index 17dca37..7d8b951 100644 (file)
--- a/llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp
+++ b/llvm/lib/Target/AArch64/GISel/AArch64CallLowering.cpp
@@ -450,9 +450,10 @@ bool AArch64CallLowering::fallBackToDAGISel(const MachineFunction &MF) const {
       }))
     return true;
   const auto &ST = MF.getSubtarget<AArch64Subtarget>();
-  LLVM_DEBUG(dbgs() << "Falling back to SDAG because we don't support no-NEON");
-  if (!ST.hasNEON() || !ST.hasFPARMv8())
+  if (!ST.hasNEON() || !ST.hasFPARMv8()) {
+    LLVM_DEBUG(dbgs() << "Falling back to SDAG because we don't support no-NEON\n");
     return true;
+  }
   return false;
 }