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
|
; REQUIRES: asserts
; RUN: opt < %s -passes='loop-vectorize' -force-target-supports-scalable-vectors=true -enable-epilogue-vectorization -epilogue-vectorization-force-VF=2 --debug-only=loop-vectorize -S -scalable-vectorization=on 2>&1 | FileCheck %s
target datalayout = "e-m:e-i64:64-n32:64-v256:256:256-v512:512:512"
; Currently we cannot handle scalable vectorization factors.
; CHECK: LV: Checking a loop in 'f1'
; CHECK: LEV: Epilogue vectorization factor is forced.
; CHECK: Epilogue Loop VF:2, Epilogue Loop UF:1
define void @f1(ptr %A) {
entry:
br label %for.body
for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%arrayidx = getelementptr inbounds i8, ptr %A, i64 %iv
store i8 1, ptr %arrayidx, align 1
%iv.next = add nuw nsw i64 %iv, 1
%exitcond = icmp ne i64 %iv.next, 1024
br i1 %exitcond, label %for.body, label %exit, !llvm.loop !0
exit:
ret void
}
!0 = !{!0, !1}
!1 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
|
