xref: /llvm-project/llvm/test/Analysis/Delinearization/byte_offset.ll (revision 2410b1cb83ee68543162a695db89c92282d08f59)
1; RUN: opt < %s -passes='print<delinearization>' -disable-output 2>&1 | FileCheck %s
2
3; CHECK: AccessFunction: ({0,+,%i2}<%outer.loop> + %unknown)
4; CHECK-NEXT: failed to delinearize
5
6; void foo(char A[], long i2, bool c) {
7;   for (long i = 0; ; ++i) {
8;     char *tmp = &A[i * i2];
9;     if (c)
10;       while (1)
11;          *((float*)&tmp[arg << arg]) = 0;
12;   }
13; }
14
15define void @foo(ptr %A, i64 %i2, i64 %arg, i1 %c) {
16entry:
17  br label %outer.loop
18
19outer.loop:
20  %outer.iv = phi i64 [ 0, %entry ], [ %outer.iv.next, %outer.latch ]
21  %i414 = mul nsw i64 %outer.iv, %i2
22  %tmp = getelementptr inbounds i8, ptr %A, i64 %i414
23  br i1 %c, label %inner.preheader, label %outer.latch
24
25inner.preheader:
26  %unknown = shl i64 %arg, %arg
27  %arrayidx = getelementptr inbounds i8, ptr %tmp, i64 %unknown
28  br label %inner.loop
29
30inner.loop:
31  store float 0.000000e+00, ptr %arrayidx, align 4
32  br label %inner.loop
33
34outer.latch:
35  %outer.iv.next = add nuw nsw i64 %outer.iv, 1
36  br label %outer.loop
37}
38