[llvm] [VectorCombine][TTI] Prevent extract/ins rewrite to GEP (PR #150216)

[Simon Pilgrim via llvm-commits]

Nathan =?utf-8?q?Gau=C3=ABr?= <brioche at google.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/150216 at github.com>


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@@ -1950,6 +1950,10 @@ class TargetTransformInfo {
       const Function &F,
       SmallVectorImpl<std::pair<StringRef, int64_t>> &LB) const;
 
+  /// Returns true if GEP should not be used to index into vectors for this
+  /// target.
+  LLVM_ABI bool isVectorElementIndexingUsingGEPAllowed() const;
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RKSimon wrote:

(bikeshed) allowVectorElementIndexingUsingGEP() is slightly shorter :)

https://github.com/llvm/llvm-project/pull/150216