[llvm] [Transforms] Base default constructor of LoopVectorizeOptions off command line parameters (PR #83645)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: AtariDreams (AtariDreams)

<details>
<summary>Changes</summary>

Default is true, but if it is disabled then default is false.

---
Full diff: https://github.com/llvm/llvm-project/pull/83645.diff


1 Files Affected:

- (modified) llvm/include/llvm/Transforms/Vectorize/LoopVectorize.h (+2-6) 


``````````diff
diff --git a/llvm/include/llvm/Transforms/Vectorize/LoopVectorize.h b/llvm/include/llvm/Transforms/Vectorize/LoopVectorize.h
index d09fc328c452ff..59683462dd15ff 100644
--- a/llvm/include/llvm/Transforms/Vectorize/LoopVectorize.h
+++ b/llvm/include/llvm/Transforms/Vectorize/LoopVectorize.h
@@ -124,13 +124,9 @@ struct LoopVectorizeOptions {
   /// EnableLoopInterleaving = true and EnableLoopVectorization = true. This
   /// means that interleaving default is consistent with the cl::opt flag, while
   /// vectorization is not.
-  /// FIXME: The default for EnableLoopVectorization in the cl::opt should be
-  /// set to true, and the corresponding change to account for this be made in
-  /// opt.cpp. The initializations below will become:
-  /// InterleaveOnlyWhenForced(!EnableLoopInterleaving)
-  /// VectorizeOnlyWhenForced(!EnableLoopVectorization).
   LoopVectorizeOptions()
-      : InterleaveOnlyWhenForced(false), VectorizeOnlyWhenForced(false) {}
+      : InterleaveOnlyWhenForced(!EnableLoopInterleaving),
+        VectorizeOnlyWhenForced(!EnableLoopVectorization) {}
   LoopVectorizeOptions(bool InterleaveOnlyWhenForced,
                        bool VectorizeOnlyWhenForced)
       : InterleaveOnlyWhenForced(InterleaveOnlyWhenForced),

``````````

</details>


https://github.com/llvm/llvm-project/pull/83645