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1; RUN: opt -loop-unroll -simplifycfg -sroa %s -S -o - | FileCheck %s
2
3target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-v16:16:16-v24:32:32-v32:32:32-v48:64:64-v64:64:64-v96:128:128-v128:128:128-v192:256:256-v256:256:256-v512:512:512-v1024:1024:1024-v2048:2048:2048-n32:64"
4target triple = "r600--"
5
6; This test contains a simple loop that initializes an array declared in
7; private memory.  We want to make sure these kinds of loops are always
8; unrolled, because private memory is slow.
9
10; CHECK-LABEL: @test
11; CHECK-NOT: alloca
12; CHECK: store i32 5, i32 addrspace(1)* %out
13define void @test(i32 addrspace(1)* %out) {
14entry:
15  %0 = alloca [32 x i32]
16  br label %loop.header
17
18loop.header:
19  %counter = phi i32 [0, %entry], [%inc, %loop.inc]
20  br label %loop.body
21
22loop.body:
23  %ptr = getelementptr [32 x i32], [32 x i32]* %0, i32 0, i32 %counter
24  store i32 %counter, i32* %ptr
25  br label %loop.inc
26
27loop.inc:
28  %inc = add i32 %counter, 1
29  %1 = icmp sge i32 %counter, 32
30  br i1 %1, label  %exit, label %loop.header
31
32exit:
33  %2 = getelementptr [32 x i32], [32 x i32]* %0, i32 0, i32 5
34  %3 = load i32, i32* %2
35  store i32 %3, i32 addrspace(1)* %out
36  ret void
37}
38