[PATCH] D149033: [NFC]Fix 2 logic dead code

[Wang, Xin via Phabricator via llvm-commits]

XinWang10 created this revision.
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First, in CodeGenPrepare.cpp, line 6891, the VectorCond will always be false
because if not function will return at 6888.
Second, in SelectionDAGBuilder.cpp, line 5443, getSExtValue() will return
value as int type, but now we use unsigned Val to maintain it, which make the
if condition at 5452 meaningless.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149033

Files:
  llvm/lib/CodeGen/CodeGenPrepare.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp


Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -5440,7 +5440,7 @@
   // it's beneficial on the target, otherwise we end up lowering to a call to
   // __powidf2 (for example).
   if (ConstantSDNode *RHSC = dyn_cast<ConstantSDNode>(RHS)) {
-    unsigned Val = RHSC->getSExtValue();
+    int Val = RHSC->getSExtValue();
 
     // powi(x, 0) -> 1.0
     if (Val == 0)
Index: llvm/lib/CodeGen/CodeGenPrepare.cpp
===================================================================
--- llvm/lib/CodeGen/CodeGenPrepare.cpp
+++ llvm/lib/CodeGen/CodeGenPrepare.cpp
@@ -6888,9 +6888,7 @@
     return false;
 
   TargetLowering::SelectSupportKind SelectKind;
-  if (VectorCond)
-    SelectKind = TargetLowering::VectorMaskSelect;
-  else if (SI->getType()->isVectorTy())
+  if (SI->getType()->isVectorTy())
     SelectKind = TargetLowering::ScalarCondVectorVal;
   else
     SelectKind = TargetLowering::ScalarValSelect;


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