1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple=x86_64-unknown-linux-gnu -relocation-model=static < %s | FileCheck %s --check-prefix=CHECK
3; RUN: llc -mcpu=atom -mtriple=x86_64-unknown-linux-gnu -relocation-model=static < %s | FileCheck %s --check-prefix=ATOM
4
5@A = external dso_local global [0 x double]
6
7define void @foo(i64 %n) nounwind {
8; CHECK-LABEL: foo:
9; CHECK:       # %bb.0: # %entry
10; CHECK-NEXT:    testq %rdi, %rdi
11; CHECK-NEXT:    jle .LBB0_3
12; CHECK-NEXT:  # %bb.1: # %for.body.preheader
13; CHECK-NEXT:    xorl %eax, %eax
14; CHECK-NEXT:    movsd {{.*#+}} xmm0 = mem[0],zero
15; CHECK-NEXT:    .p2align 4, 0x90
16; CHECK-NEXT:  .LBB0_2: # %for.body
17; CHECK-NEXT:    # =>This Inner Loop Header: Depth=1
18; CHECK-NEXT:    movsd {{.*#+}} xmm1 = mem[0],zero
19; CHECK-NEXT:    mulsd %xmm0, %xmm1
20; CHECK-NEXT:    movsd %xmm1, A(,%rax,8)
21; CHECK-NEXT:    incq %rax
22; CHECK-NEXT:    cmpq %rax, %rdi
23; CHECK-NEXT:    jne .LBB0_2
24; CHECK-NEXT:  .LBB0_3: # %for.end
25; CHECK-NEXT:    retq
26;
27; ATOM-LABEL: foo:
28; ATOM:       # %bb.0: # %entry
29; ATOM-NEXT:    testq %rdi, %rdi
30; ATOM-NEXT:    jle .LBB0_3
31; ATOM-NEXT:  # %bb.1: # %for.body.preheader
32; ATOM-NEXT:    xorl %eax, %eax
33; ATOM-NEXT:    movsd {{.*#+}} xmm0 = mem[0],zero
34; ATOM-NEXT:    .p2align 4, 0x90
35; ATOM-NEXT:  .LBB0_2: # %for.body
36; ATOM-NEXT:    # =>This Inner Loop Header: Depth=1
37; ATOM-NEXT:    movsd {{.*#+}} xmm1 = mem[0],zero
38; ATOM-NEXT:    mulsd %xmm0, %xmm1
39; ATOM-NEXT:    movsd %xmm1, A(,%rax,8)
40; ATOM-NEXT:    leaq 1(%rax), %rax
41; ATOM-NEXT:    cmpq %rax, %rdi
42; ATOM-NEXT:    jne .LBB0_2
43; ATOM-NEXT:  .LBB0_3: # %for.end
44; ATOM-NEXT:    nop
45; ATOM-NEXT:    nop
46; ATOM-NEXT:    nop
47; ATOM-NEXT:    nop
48; ATOM-NEXT:    retq
49entry:
50  %cmp5 = icmp sgt i64 %n, 0
51  br i1 %cmp5, label %for.body, label %for.end
52
53for.body:
54  %i.06 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
55  %arrayidx = getelementptr [0 x double], [0 x double]* @A, i64 0, i64 %i.06
56  %tmp3 = load double, double* %arrayidx, align 8
57  %mul = fmul double %tmp3, 2.300000e+00
58  store double %mul, double* %arrayidx, align 8
59  %inc = add nsw i64 %i.06, 1
60  %exitcond = icmp eq i64 %inc, %n
61  br i1 %exitcond, label %for.end, label %for.body
62
63for.end:
64  ret void
65}
66