1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
; RUN: llc < %s -march=arm64 -aarch64-neon-syntax=apple | FileCheck %s
;CHECK: @func63
;CHECK: cmeq.4h v0, v0, v1
;FIXME: currently, it will generate 3 instructions:
; ushll.4s v0, v0, #0
; shl.4s v0, v0, #31
; sshr.4s v0, v0, #31
;But these instrucitons can be optimized into 1 instruction:
; sshll.4s v0, v0, #0
;CHECK: bsl.16b v0, v2, v3
;CHECK: str q0, [x0]
;CHECK: ret
%T0_63 = type <4 x i16>
%T1_63 = type <4 x i32>
%T2_63 = type <4 x i1>
define void @func63(%T1_63* %out, %T0_63 %v0, %T0_63 %v1, %T1_63 %v2, %T1_63 %v3) {
%cond = icmp eq %T0_63 %v0, %v1
%r = select %T2_63 %cond, %T1_63 %v2, %T1_63 %v3
store %T1_63 %r, %T1_63* %out
ret void
}
|
