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
42
43
44
45
46
47
48
49
|
; Remove 'S' Scalar Dependencies #119345
; Scalar dependencies are not handled correctly, so they were removed to avoid
; miscompiles. The loop nest in this test case used to be interchanged, but it's
; no longer triggering. XFAIL'ing this test to indicate that this test should
; interchanged if scalar deps are handled correctly.
;
; XFAIL: *
; RUN: opt -passes=loop-interchange -cache-line-size=64 -loop-interchange-threshold=-10 %s -pass-remarks-output=%t -disable-output
; RUN: FileCheck -input-file %t %s
; The test contains a GEP with an operand that is not SCEV-able. Make sure
; loop-interchange does not crash.
;
; CHECK: --- !Passed
; CHECK-NEXT: Pass: loop-interchange
; CHECK-NEXT: Name: Interchanged
; CHECK-NEXT: Function: test
; CHECK-NEXT: Args:
; CHECK-NEXT: - String: Loop interchanged with enclosing loop.
define void @test(ptr noalias %src, ptr %dst) {
entry:
br label %outer.header
outer.header:
%i = phi i32 [ %i.next, %outer.latch ], [ 0, %entry ]
br label %inner
inner:
%j = phi i64 [ 0, %outer.header ], [ %j.next, %inner ]
%src.gep = getelementptr inbounds [256 x float], ptr %src, <2 x i64> <i64 0, i64 1>, i64 %j
%src.0 = extractelement <2 x ptr> %src.gep, i32 0
%lv.0 = load float, ptr %src.0
%add.0 = fadd float %lv.0, 1.0
%dst.gep = getelementptr inbounds float, ptr %dst, i64 %j
store float %add.0, ptr %dst.gep
%j.next = add nuw nsw i64 %j, 1
%inner.exitcond = icmp eq i64 %j.next, 100
br i1 %inner.exitcond, label %outer.latch, label %inner
outer.latch:
%i.next = add nuw nsw i32 %i, 1
%outer.exitcond = icmp eq i32 %i.next, 100
br i1 %outer.exitcond, label %exit, label %outer.header
exit:
ret void
}
|
