xref: /llvm-project/llvm/test/CodeGen/Thumb2/aligned-nonfallthrough.ll (revision 23d45e55edb0ca4567f5876e7051ff4a649213df) 
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple=thumbv8.1-m.main-none-eabi -mcpu=cortex-m55 -O3 < %s | FileCheck %s
3
4define i32 @loop(ptr nocapture readonly %x) {
5; CHECK-LABEL: loop:
6; CHECK:       @ %bb.0: @ %entry
7; CHECK-NEXT:    .save {r7, lr}
8; CHECK-NEXT:    push {r7, lr}
9; CHECK-NEXT:    mov.w lr, #500
10; CHECK-NEXT:    mov r1, r0
11; CHECK-NEXT:    movs r0, #0
12; CHECK-NEXT:    .p2align 2
13; CHECK-NEXT:  .LBB0_1: @ %for.body
14; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
15; CHECK-NEXT:    ldr r2, [r1], #4
16; CHECK-NEXT:    add r0, r2
17; CHECK-NEXT:    le lr, .LBB0_1
18; CHECK-NEXT:  @ %bb.2: @ %for.cond.cleanup
19; CHECK-NEXT:    pop {r7, pc}
20entry:
21  br label %for.body
22
23for.cond.cleanup:                                 ; preds = %for.body
24  ret i32 %add
25
26for.body:                                         ; preds = %entry, %for.body
27  %i.07 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
28  %s.06 = phi i32 [ 0, %entry ], [ %add, %for.body ]
29  %arrayidx = getelementptr inbounds i32, ptr %x, i32 %i.07
30  %0 = load i32, ptr %arrayidx, align 4
31  %add = add nsw i32 %0, %s.06
32  %inc = add nuw nsw i32 %i.07, 1
33  %exitcond.not = icmp eq i32 %inc, 500
34  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
35}
36
37define i64 @loopif(ptr nocapture readonly %x, i32 %y, i32 %n) {
38; CHECK-LABEL: loopif:
39; CHECK:       @ %bb.0: @ %entry
40; CHECK-NEXT:    .save {r7, lr}
41; CHECK-NEXT:    push {r7, lr}
42; CHECK-NEXT:    cmp r2, #1
43; CHECK-NEXT:    blt .LBB1_4
44; CHECK-NEXT:  @ %bb.1: @ %for.body.lr.ph
45; CHECK-NEXT:    dls lr, r2
46; CHECK-NEXT:    mov r12, r0
47; CHECK-NEXT:    movs r0, #0
48; CHECK-NEXT:    movs r3, #0
49; CHECK-NEXT:    .p2align 2
50; CHECK-NEXT:  .LBB1_2: @ %for.body
51; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
52; CHECK-NEXT:    ldr r2, [r12], #4
53; CHECK-NEXT:    smlal r0, r3, r2, r1
54; CHECK-NEXT:    le lr, .LBB1_2
55; CHECK-NEXT:  @ %bb.3: @ %for.cond.cleanup
56; CHECK-NEXT:    mov r1, r3
57; CHECK-NEXT:    pop {r7, pc}
58; CHECK-NEXT:    .p2align 2
59; CHECK-NEXT:  .LBB1_4:
60; CHECK-NEXT:    movs r0, #0
61; CHECK-NEXT:    movs r3, #0
62; CHECK-NEXT:    mov r1, r3
63; CHECK-NEXT:    pop {r7, pc}
64entry:
65  %cmp7 = icmp sgt i32 %n, 0
66  br i1 %cmp7, label %for.body.lr.ph, label %for.cond.cleanup
67
68for.body.lr.ph:                                   ; preds = %entry
69  %conv1 = sext i32 %y to i64
70  br label %for.body
71
72for.cond.cleanup:                                 ; preds = %for.body, %entry
73  %s.0.lcssa = phi i64 [ 0, %entry ], [ %add, %for.body ]
74  ret i64 %s.0.lcssa
75
76for.body:                                         ; preds = %for.body.lr.ph, %for.body
77  %i.09 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
78  %s.08 = phi i64 [ 0, %for.body.lr.ph ], [ %add, %for.body ]
79  %arrayidx = getelementptr inbounds i32, ptr %x, i32 %i.09
80  %0 = load i32, ptr %arrayidx, align 4
81  %conv = sext i32 %0 to i64
82  %mul = mul nsw i64 %conv, %conv1
83  %add = add nsw i64 %mul, %s.08
84  %inc = add nuw nsw i32 %i.09, 1
85  %exitcond.not = icmp eq i32 %inc, %n
86  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
87}
88