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Francesco Petrogalli 667f67e6d8 [llvm][AArch64] Allow TB(N)Z to drop signext for sign bit tests.
For example if the sign extension is only used in for TBZ, and the value is used elsewhere with a zero extension, this can eliminate a sign extension.

Reviewed By: samparker

Differential Revision: https://reviews.llvm.org/D90606
2020-11-09 18:27:48 +00:00
2020-11-09 14:31:09 +00:00
2020-03-14 18:08:26 -07:00

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