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
|
; RUN: opt < %s -passes=loop-vectorize -force-vector-width=4 -verify-scev-maps -S |FileCheck %s
; SCEV expansion uses existing value when the SCEV has no AddRec expr.
; CHECK-LABEL: @foo(
; CHECK: select
; CHECK-NOT: select
; CHECK: ret
@a = common global [1000 x i16] zeroinitializer, align 16
define i32 @foo(i32 %x, i32 %y) {
entry:
%cmp = icmp slt i32 %x, %y
%cond = select i1 %cmp, i32 %x, i32 %y
%cmp1.10 = icmp sgt i32 %cond, 0
br i1 %cmp1.10, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%tmp = sext i32 %cond to i64
br label %for.body
for.body: ; preds = %for.body, %for.body.lr.ph
%indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
%total.011 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ]
%arrayidx = getelementptr inbounds [1000 x i16], ptr @a, i64 0, i64 %indvars.iv
%tmp1 = load i16, ptr %arrayidx, align 2
%conv = sext i16 %tmp1 to i32
%add = add nsw i32 %conv, %total.011
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%cmp1 = icmp slt i64 %indvars.iv.next, %tmp
br i1 %cmp1, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
%add.lcssa = phi i32 [ %add, %for.body ]
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%total.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %for.end.loopexit ]
ret i32 %total.0.lcssa
}
|
