xref: /llvm-project/polly/test/CodeGen/invariant_load.ll (revision e1f056f692d869708c1898d9d65a69ac5584a0ed)
1; RUN: opt %loadNPMPolly -passes=polly-codegen -polly-invariant-load-hoisting=true -S < %s | FileCheck %s
2;
3; CHECK-LABEL: polly.preload.begin:
4; CHECK-NEXT:    %polly.access.B = getelementptr i32, ptr %B, i64 0
5; CHECK-NEXT:    %polly.access.B.load = load i32, ptr %polly.access.B
6;
7; CHECK-LABEL: polly.stmt.bb2:
8; CHECK-NEXT:    %[[offset:.*]] = shl nuw nsw i64 %polly.indvar, 2
9; CHECK-NEXT:    %scevgep = getelementptr i8, ptr %A, i64 %[[offset]]
10; CHECK-NEXT:    store i32 %polly.access.B.load, ptr %scevgep, align 4
11;
12;    void f(int *restrict A, int *restrict B) {
13;      for (int i = 0; i < 1024; i++)
14;        A[i] = *B;
15;    }
16;
17target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
18
19define void @f(ptr noalias %A, ptr noalias %B) {
20bb:
21  br label %bb1
22
23bb1:                                              ; preds = %bb4, %bb
24  %indvars.iv = phi i64 [ %indvars.iv.next, %bb4 ], [ 0, %bb ]
25  %exitcond = icmp ne i64 %indvars.iv, 1024
26  br i1 %exitcond, label %bb2, label %bb5
27
28bb2:                                              ; preds = %bb1
29  %tmp = load i32, ptr %B, align 4
30  %tmp3 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
31  store i32 %tmp, ptr %tmp3, align 4
32  br label %bb4
33
34bb4:                                              ; preds = %bb2
35  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
36  br label %bb1
37
38bb5:                                              ; preds = %bb1
39  ret void
40}
41