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
|
; Check for recognizing the "memmove" idiom.
; RUN: opt -hexagon-loop-idiom -S -mtriple hexagon-unknown-elf < %s \
; RUN: | FileCheck %s
; CHECK: call void @llvm.memmove
; Function Attrs: norecurse nounwind
define void @foo(ptr nocapture %A, ptr nocapture readonly %B, i32 %n) #0 {
entry:
%cmp1 = icmp sgt i32 %n, 0
br i1 %cmp1, label %for.body.preheader, label %for.end
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%arrayidx.phi = phi ptr [ %B, %for.body.preheader ], [ %arrayidx.inc, %for.body ]
%arrayidx1.phi = phi ptr [ %A, %for.body.preheader ], [ %arrayidx1.inc, %for.body ]
%i.02 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%0 = load i32, ptr %arrayidx.phi, align 4
store i32 %0, ptr %arrayidx1.phi, align 4
%inc = add nuw nsw i32 %i.02, 1
%exitcond = icmp ne i32 %inc, %n
%arrayidx.inc = getelementptr i32, ptr %arrayidx.phi, i32 1
%arrayidx1.inc = getelementptr i32, ptr %arrayidx1.phi, i32 1
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
attributes #0 = { nounwind }
|
