1; RUN: opt -S -loop-reduce < %s | FileCheck %s
2
3; LSR shouldn't consider %t8 to be an interesting user of %t6, and it
4; should be able to form pretty GEPs.
5
6target datalayout = "e-p:64:64:64-p1:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
7
8; Copy of uglygep with a different address space
9; This tests expandAddToGEP uses the right smaller integer type for
10; another address space
11define void @Z4() nounwind {
12; CHECK-LABEL: @Z4(
13bb:
14  br label %bb3
15
16bb1:                                              ; preds = %bb3
17  br i1 undef, label %bb10, label %bb2
18
19bb2:                                              ; preds = %bb1
20  %t = add i16 %t4, 1                         ; <i16> [#uses=1]
21  br label %bb3
22
23bb3:                                              ; preds = %bb2, %bb
24  %t4 = phi i16 [ %t, %bb2 ], [ 0, %bb ]      ; <i16> [#uses=3]
25  br label %bb1
26
27; CHECK: bb10:
28; CHECK-NEXT: %t7 = icmp eq i16 %t4, 0
29; Host %t2 computation outside the loop.
30; CHECK-NEXT: [[SCEVGEP:%[^ ]+]] = getelementptr i8, i8 addrspace(1)* undef, i16 %t4
31; CHECK-NEXT: br label %bb14
32bb10:                                             ; preds = %bb9
33  %t7 = icmp eq i16 %t4, 0                    ; <i1> [#uses=1]
34  %t3 = add i16 %t4, 16                     ; <i16> [#uses=1]
35  br label %bb14
36
37; CHECK: bb14:
38; CHECK-NEXT: store i8 undef, i8 addrspace(1)* [[SCEVGEP]]
39; CHECK-NEXT: %t6 = load float addrspace(1)*, float addrspace(1)* addrspace(1)* undef
40; Fold %t3's add within the address.
41; CHECK-NEXT: [[SCEVGEP1:%[^ ]+]] = getelementptr float, float addrspace(1)* %t6, i16 4
42; CHECK-NEXT: [[SCEVGEP2:%[^ ]+]] = bitcast float addrspace(1)* [[SCEVGEP1]] to i8 addrspace(1)*
43; Use the induction variable (%t4) to access the right element
44; CHECK-NEXT: [[ADDRESS:%[^ ]+]] = getelementptr i8, i8 addrspace(1)* [[SCEVGEP2]], i16 %t4
45; CHECK-NEXT: store i8 undef, i8 addrspace(1)* [[ADDRESS]]
46; CHECK-NEXT: br label %bb14
47bb14:                                             ; preds = %bb14, %bb10
48  %t2 = getelementptr inbounds i8, i8 addrspace(1)* undef, i16 %t4 ; <i8*> [#uses=1]
49  store i8 undef, i8 addrspace(1)* %t2
50  %t6 = load float addrspace(1)*, float addrspace(1)* addrspace(1)* undef
51  %t8 = bitcast float addrspace(1)* %t6 to i8 addrspace(1)*              ; <i8*> [#uses=1]
52  %t9 = getelementptr inbounds i8, i8 addrspace(1)* %t8, i16 %t3 ; <i8*> [#uses=1]
53  store i8 undef, i8 addrspace(1)* %t9
54  br label %bb14
55}
56
57