1 ; RUN: opt -mtriple=amdgcn-- -loop-unroll -simplifycfg -sroa %s -S -o - | FileCheck %s
2 ; RUN: opt -mtriple=r600-- -loop-unroll -simplifycfg -sroa %s -S -o - | FileCheck %s
4 target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5"
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.
10 ; CHECK-LABEL: @private_memory
12 ; CHECK: store i32 5, i32 addrspace(1)* %out
13 define amdgpu_kernel void @private_memory(i32 addrspace(1)* %out) {
15 %0 = alloca [32 x i32], addrspace(5)
19 %counter = phi i32 [0, %entry], [%inc, %loop.inc]
23 %ptr = getelementptr [32 x i32], [32 x i32] addrspace(5)* %0, i32 0, i32 %counter
24 store i32 %counter, i32 addrspace(5)* %ptr
28 %inc = add i32 %counter, 1
29 %1 = icmp sge i32 %counter, 32
30 br i1 %1, label %exit, label %loop.header
33 %2 = getelementptr [32 x i32], [32 x i32] addrspace(5)* %0, i32 0, i32 5
34 %3 = load i32, i32 addrspace(5)* %2
35 store i32 %3, i32 addrspace(1)* %out
39 ; Check that loop is unrolled for local memory references
41 ; CHECK-LABEL: @local_memory
42 ; CHECK: getelementptr i32, i32 addrspace(1)* %out, i32 128
45 define amdgpu_kernel void @local_memory(i32 addrspace(1)* %out, i32 addrspace(3)* %lds) {
50 %counter = phi i32 [0, %entry], [%inc, %loop.inc]
54 %ptr_lds = getelementptr i32, i32 addrspace(3)* %lds, i32 %counter
55 %val = load i32, i32 addrspace(3)* %ptr_lds
56 %ptr_out = getelementptr i32, i32 addrspace(1)* %out, i32 %counter
57 store i32 %val, i32 addrspace(1)* %ptr_out
61 %inc = add i32 %counter, 1
62 %cond = icmp sge i32 %counter, 128
63 br i1 %cond, label %exit, label %loop.header
69 ; Check that a loop with if inside completely unrolled to eliminate phi and if
71 ; CHECK-LABEL: @unroll_for_if
73 ; CHECK-NEXT: getelementptr
75 ; CHECK-NEXT: getelementptr
78 define amdgpu_kernel void @unroll_for_if(i32 addrspace(5)* %a) {
82 for.body: ; preds = %entry, %for.inc
83 %i1 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
85 %tobool = icmp eq i32 %and, 0
86 br i1 %tobool, label %for.inc, label %if.then
88 if.then: ; preds = %for.body
89 %0 = sext i32 %i1 to i64
90 %arrayidx = getelementptr inbounds i32, i32 addrspace(5)* %a, i64 %0
91 store i32 0, i32 addrspace(5)* %arrayidx, align 4
94 for.inc: ; preds = %for.body, %if.then
95 %inc = add nuw nsw i32 %i1, 1
96 %cmp = icmp ult i32 %inc, 48
97 br i1 %cmp, label %for.body, label %for.end
99 for.end: ; preds = %for.cond