[llvm] [VPlan] Avoid branching around State.get (NFC) (PR #159042)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-vectorizers

Author: Ramkumar Ramachandra (artagnon)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/159042.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp (+3-9) 


``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
index 2844b8348027b..dbd54f8bbbb14 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
@@ -1933,10 +1933,8 @@ void VPWidenSelectRecipe::execute(VPTransformState &State) {
   // loop. This means that we can't just use the original 'cond' value.
   // We have to take the 'vectorized' value and pick the first lane.
   // Instcombine will make this a no-op.
-  auto *InvarCond =
-      isInvariantCond() ? State.get(getCond(), VPLane(0)) : nullptr;
+  Value *Cond = State.get(getCond(), isInvariantCond());
 
-  Value *Cond = InvarCond ? InvarCond : State.get(getCond());
   Value *Op0 = State.get(getOperand(1));
   Value *Op1 = State.get(getOperand(2));
   Value *Sel = State.Builder.CreateSelect(Cond, Op0, Op1);
@@ -2496,18 +2494,14 @@ void VPWidenGEPRecipe::execute(VPTransformState &State) {
     // produce a vector of pointers unless VF is scalar.
     // The pointer operand of the new GEP. If it's loop-invariant, we
     // won't broadcast it.
-    auto *Ptr = isPointerLoopInvariant() ? State.get(getOperand(0), VPLane(0))
-                                         : State.get(getOperand(0));
+    auto *Ptr = State.get(getOperand(0), isPointerLoopInvariant());
 
     // Collect all the indices for the new GEP. If any index is
     // loop-invariant, we won't broadcast it.
     SmallVector<Value *, 4> Indices;
     for (unsigned I = 1, E = getNumOperands(); I < E; I++) {
       VPValue *Operand = getOperand(I);
-      if (isIndexLoopInvariant(I - 1))
-        Indices.push_back(State.get(Operand, VPLane(0)));
-      else
-        Indices.push_back(State.get(Operand));
+      Indices.push_back(State.get(Operand, isIndexLoopInvariant(I - 1)));
     }
 
     // Create the new GEP. Note that this GEP may be a scalar if VF == 1,

``````````

</details>


https://github.com/llvm/llvm-project/pull/159042