[AArch64] NFCI: More sensible implementation of isLegalMaskedGatherScatter.

sdesmalen-arm · sdesmalen-arm · commit b1ec1a2dc810 · 2024-06-21T10:29:44.000Z
Gather/Scatter instructions are only available if the whole of SVE
is available.
diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
@@ -276,7 +276,7 @@ class AArch64TTIImpl : public BasicTTIImplBase<AArch64TTIImpl> {
   }
 
   bool isLegalMaskedGatherScatter(Type *DataType) const {
-    if (!ST->hasSVE() || !ST->isNeonAvailable())
+    if (!ST->isSVEAvailable())
       return false;
 
     // For fixed vectors, scalarize if not using SVE for them.

Original file line number	Diff line number	Diff line change
`@@ -276,7 +276,7 @@ class AArch64TTIImpl : public BasicTTIImplBase<AArch64TTIImpl> {`
`276`	`276`	`}`
`277`	`277`
`278`	`278`	`bool isLegalMaskedGatherScatter(Type *DataType) const {`
`279`		`- if (!ST->hasSVE() \|\| !ST->isNeonAvailable())`
	`279`	`+ if (!ST->isSVEAvailable())`
`280`	`280`	`return false;`
`281`	`281`
`282`	`282`	`// For fixed vectors, scalarize if not using SVE for them.`