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3 Commits

Author SHA1 Message Date
Eli Friedman 92d0d13366 [AArch64] Prefer "mov" over "orr" to materialize constants. 
This is generally more readable due to the way the assembler aliases
work.

(This causes a lot of test changes, but it's not really as scary as it
looks at first glance; it's just mechanically changing a bunch of checks
for orr to check for mov instead.)

Differential Revision: https://reviews.llvm.org/D59720

llvm-svn: 356954
 2019-03-25 21:25:28 +00:00
Nikita Popov 1a26144ff5 [AArch64] Turn BIC immediate creation into a DAG combine 
Switch BIC immediate creation for vector ANDs from custom lowering
to a DAG combine, which gives generic DAG combines a change to
apply first. In particular this avoids (and x, -1) being turned into
a (bic x, 0) instead of being eliminated entirely.

Differential Revision: https://reviews.llvm.org/D59187

llvm-svn: 356299
 2019-03-15 21:04:34 +00:00
Nikita Popov bfec0d610c [AArch64] Add tests for saddsat/ssubsat; NFC 
Signed versions of the existing unsigned tests.

llvm-svn: 355787
 2019-03-10 12:21:36 +00:00