xref: /llvm-project/polly/test/CodeGen/invariant_load_ptr_ptr_noalias.ll (revision e1f056f692d869708c1898d9d65a69ac5584a0ed)
1; RUN: opt %loadNPMPolly -polly-process-unprofitable -passes=polly-codegen -polly-invariant-load-hoisting=true -polly-ignore-aliasing -S  < %s | FileCheck %s
2;
3; CHECK-LABEL: polly.preload.begin:
4; CHECK:   %polly.access.A = getelementptr ptr, ptr %A, i64 42
5; CHECK:   %polly.access.A.load = load ptr, ptr %polly.access.A
6; CHECK:   %polly.access.polly.access.A.load = getelementptr ptr, ptr %polly.access.A.load, i64 32
7; CHECK:   %polly.access.polly.access.A.load.load = load ptr, ptr %polly.access.polly.access.A.load
8;
9; CHECK: polly.stmt.bb2:
10; CHECK:   %[[offset:.*]] = shl nuw nsw i64 %polly.indvar, 2
11; CHECK:   %scevgep = getelementptr i8, ptr %polly.access.polly.access.A.load.load, i64 %[[offset]]
12; CHECK:   store i32 0, ptr %scevgep, align 4
13;
14;    void f(int ***A) {
15;      for (int i = 0; i < 1024; i++)
16;        A[42][32][i] = 0;
17;    }
18;
19target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
20
21define void @f(ptr %A) {
22bb:
23  br label %bb1
24
25bb1:                                              ; preds = %bb7, %bb
26  %indvars.iv = phi i64 [ %indvars.iv.next, %bb7 ], [ 0, %bb ]
27  %exitcond = icmp ne i64 %indvars.iv, 1024
28  br i1 %exitcond, label %bb2, label %bb8
29
30bb2:                                              ; preds = %bb1
31  %tmp = getelementptr inbounds ptr, ptr %A, i64 42
32  %tmp3 = load ptr, ptr %tmp, align 8
33  %tmp4 = getelementptr inbounds ptr, ptr %tmp3, i64 32
34  %tmp5 = load ptr, ptr %tmp4, align 8
35  %tmp6 = getelementptr inbounds i32, ptr %tmp5, i64 %indvars.iv
36  store i32 0, ptr %tmp6, align 4
37  br label %bb7
38
39bb7:                                              ; preds = %bb2
40  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
41  br label %bb1
42
43bb8:                                              ; preds = %bb1
44  ret void
45}
46