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4 Commits

Author SHA1 Message Date
Eli Friedman
ea5a6285ae [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
Chad Rosier
5e5ab1832d Fix test from r285217. 
llvm-svn: 285222
 2016-10-26 18:49:16 +00:00
Chad Rosier
c0750fd641 [AArch64] Avoid materializing constant 1 when generating cneg instructions. 
Instead of

 cmp w0, #1
 orr w8, wzr, #0x1
 cneg w0, w8, ne

we now generate

 cmp w0, #1
 csinv w0, w0, wzr, eq

PR28965

llvm-svn: 285217
 2016-10-26 18:15:32 +00:00
Chad Rosier
ab1bc0d119 [AArch64] Avoid materializing constant values when generating csel instructions. 
Differential Revision: https://reviews.llvm.org/D23677

llvm-svn: 279849
 2016-08-26 18:05:50 +00:00