Backport [AArch64] Only apply bool vector bitcast opt if result is scalar #166
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…m#81256) This optimization tries to optimize bitcasts from `<N x i1>` to iN, but currently also triggers for `<N x i1>` to `<M x iK>` bitcasts, if custom lowering has been requested for these for an unrelated reason. Fix this by explicitly checking that the result type is scalar. Fixes llvm#81216. (cherry picked from commit 92d7992)
cuviper
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May 23, 2024
Serialise null pointer constants.
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Backport fix for rust-lang/rust#120813.