| commit | 72dd9bdcc57a71d7e9a6f3e68ca1a35ad437a980 | [log] [tgz] |
|---|---|---|
| author | Chris Lattner <sabre@nondot.org> | Tue Apr 18 03:43:48 2006 +0000 |
| committer | Chris Lattner <sabre@nondot.org> | Tue Apr 18 03:43:48 2006 +0000 |
| tree | f22545fb4942394d99c667dfc2f182b848739396 | |
| parent | e7c768ea24027938b52abd6ee94755b6d17f3da3 [diff] |
Lower v8i16 multiply into this code:
li r5, lo16(LCPI1_0)
lis r6, ha16(LCPI1_0)
lvx v4, r6, r5
vmulouh v5, v3, v2
vmuleuh v2, v3, v2
vperm v2, v2, v5, v4
where v4 is:
LCPI1_0: ; <16 x ubyte>
.byte 2
.byte 3
.byte 18
.byte 19
.byte 6
.byte 7
.byte 22
.byte 23
.byte 10
.byte 11
.byte 26
.byte 27
.byte 14
.byte 15
.byte 30
.byte 31
This is 5.07x faster on the G5 (measured) than lowering to scalar code +
loads/stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27789 91177308-0d34-0410-b5e6-96231b3b80d8