[SystemZ] Make better use of VGEF/VGEG
Current code in SystemZDAGToDAGISel::tryGather refuses to perform
any transformation if the Load SDNode has more than one use. This
(erronously) counts uses of the chain result, which prevents the
optimization in many cases unnecessarily. Fixed by this patch.
llvm-svn: 349748
diff --git a/llvm/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp b/llvm/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
index 0d2c238..4fbb59e 100644
--- a/llvm/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
@@ -1147,7 +1147,7 @@
return false;
auto *Load = dyn_cast<LoadSDNode>(N->getOperand(1));
- if (!Load || !Load->hasOneUse())
+ if (!Load || !Load->hasNUsesOfValue(1, 0))
return false;
if (Load->getMemoryVT().getSizeInBits() !=
Load->getValueType(0).getSizeInBits())