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
|
; RUN: opt %loadPolly -polly-process-unprofitable -polly-scops -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s
;
; CHECK: Invariant Accesses:
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: { Stmt_bb2[i0] -> MemRef_B[0] };
; CHECK-NOT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NOT: { Stmt_bb2[i0] -> MemRef_tmp[] };
;
; void f(int *restrict A, int *restrict B) {
; for (int i = 0; i < 1024; i++)
; auto tmp = *B;
; // Split BB
; A[i] = tmp;
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* noalias %A, i32* noalias %B) {
bb:
br label %bb1
bb1: ; preds = %bb4, %bb
%indvars.iv = phi i64 [ %indvars.iv.next, %bb4 ], [ 0, %bb ]
%exitcond = icmp ne i64 %indvars.iv, 1024
br i1 %exitcond, label %bb2, label %bb5
bb2: ; preds = %bb1
%tmp = load i32, i32* %B, align 4
br label %bb2b
bb2b:
%tmp3 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
store i32 %tmp, i32* %tmp3, align 4
br label %bb4
bb4: ; preds = %bb2
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %bb1
bb5: ; preds = %bb1
ret void
}
|
