1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
; RUN: opt -mtriple=x86_64-apple-darwin -mattr=+sse2 -loop-vectorize -debug-only=loop-vectorize -S < %s 2>&1 | FileCheck %s
; REQUIRES: asserts
; CHECK: "foo"
; CHECK: LV: Found an estimated cost of 1 for VF 4 For instruction: %shift = ashr i32 %val, %k
define void @foo(i32* nocapture %p, i32 %k) local_unnamed_addr #0 {
entry:
br label %body
body:
%i = phi i64 [ 0, %entry ], [ %next, %body ]
%ptr = getelementptr inbounds i32, i32* %p, i64 %i
%val = load i32, i32* %ptr, align 4
%shift = ashr i32 %val, %k
store i32 %shift, i32* %ptr, align 4
%next = add nuw nsw i64 %i, 1
%cmp = icmp eq i64 %next, 16
br i1 %cmp, label %exit, label %body
exit:
ret void
}
|
