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
|
; RUN: llvm-as < %s | opt -disable-output -analyze -lda > %t
; RUN: grep {instructions: 3} %t | count 1
; RUN: grep {0,2: dependent} %t | count 1
; RUN: grep {1,2: independent} %t | count 1
; for (i = 0; i < 256; i++)
; x[i+1] = x[i] + y[i]
@x = common global [256 x i32] zeroinitializer, align 4
@y = common global [256 x i32] zeroinitializer, align 4
define void @foo(...) nounwind {
entry:
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
%y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
%x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
%i.next = add i64 %i, 1
%x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i.next
%x = load i32* %x.ld.addr
%y = load i32* %y.ld.addr
%r = add i32 %y, %x
store i32 %r, i32* %x.st.addr
%exitcond = icmp eq i64 %i.next, 256
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret void
}
|
