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
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -force-streaming-compatible-sve < %s | FileCheck %s
target triple = "aarch64-unknown-linux-gnu"
; Currently there is no custom lowering for vector shuffles operating on types
; bigger than NEON. However, having no support opens us up to a code generator
; hang when expanding BUILD_VECTOR. Here we just validate the promblematic case
; successfully exits code generation.
define void @hang_when_merging_stores_after_legalisation(ptr %a, <2 x i32> %b) #0 {
; CHECK-LABEL: hang_when_merging_stores_after_legalisation:
; CHECK: // %bb.0:
; CHECK-NEXT: // kill: def $d0 killed $d0 def $z0
; CHECK-NEXT: mov z0.s, s0
; CHECK-NEXT: stp q0, q0, [x0]
; CHECK-NEXT: ret
%splat = shufflevector <2 x i32> %b, <2 x i32> undef, <8 x i32> zeroinitializer
%interleaved.vec = shufflevector <8 x i32> %splat, <8 x i32> undef, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
store <8 x i32> %interleaved.vec, ptr %a, align 4
ret void
}
; Ensure we don't crash when trying to lower a shuffle via an extract
define void @crash_when_lowering_extract_shuffle(ptr %dst, i1 %cond) #0 {
; CHECK-LABEL: crash_when_lowering_extract_shuffle:
; CHECK: // %bb.0:
; CHECK-NEXT: ret
%broadcast.splat = shufflevector <32 x i1> zeroinitializer, <32 x i1> zeroinitializer, <32 x i32> zeroinitializer
br i1 %cond, label %exit, label %vector.body
vector.body:
%1 = load <32 x i32>, ptr %dst, align 16
%predphi = select <32 x i1> %broadcast.splat, <32 x i32> zeroinitializer, <32 x i32> %1
store <32 x i32> %predphi, ptr %dst, align 16
br label %exit
exit:
ret void
}
attributes #0 = { "target-features"="+sve" }
|
