[PATCH] D107453: [SVE] Add folds for truncation of vscale

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen added inline comments.


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Comment at: llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp:971
+                               .second;
+      if (Log2_32(MaxVScale) < DestWidth) {
+        Value *VScale = Builder.CreateVScale(ConstantInt::get(DestTy, 1));
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This also requires a check that MaxVScale > 0, because according to the langref (`a value of 0 means unbounded`).


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107453/new/

https://reviews.llvm.org/D107453