[LV] Use value_or to simplify code. NFC

[topperc]

No description provided.

[llvmbot]

@llvm/pr-subscribers-llvm-transforms

Author: Craig Topper (topperc)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/77030.diff

1 Files Affected:

• (modified) llvm/lib/Transforms/Vectorize/LoopVectorize.cpp (+2-3)

diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index 10c068e3b5895c..d501307ec08546 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -5004,9 +5004,8 @@ VectorizationFactor LoopVectorizationPlanner::selectVectorizationFactor(
     VectorizationFactor Candidate(i, C.first, ScalarCost.ScalarCost);
 
 #ifndef NDEBUG
-    unsigned AssumedMinimumVscale = 1;
-    if (std::optional<unsigned> VScale = getVScaleForTuning(OrigLoop, TTI))
-      AssumedMinimumVscale = *VScale;
+    unsigned AssumedMinimumVscale =
+        getVScaleForTuning(OrigLoop, TTI).value_or(1);
     unsigned Width =
         Candidate.Width.isScalable()
             ? Candidate.Width.getKnownMinValue() * AssumedMinimumVscale

[preames]

LGTM

[fhahn]

LGTM, thanks!