|  | ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | 
|  | ; RUN: llc -mtriple=x86_64-unknown-linux-gnu -relocation-model=static < %s | FileCheck %s --check-prefix=CHECK | 
|  | ; RUN: llc -mcpu=atom -mtriple=x86_64-unknown-linux-gnu -relocation-model=static < %s | FileCheck %s --check-prefix=ATOM | 
|  |  | 
|  | @A = external dso_local global [0 x double] | 
|  |  | 
|  | define void @foo(i64 %n) nounwind { | 
|  | ; CHECK-LABEL: foo: | 
|  | ; CHECK:       # %bb.0: # %entry | 
|  | ; CHECK-NEXT:    testq %rdi, %rdi | 
|  | ; CHECK-NEXT:    jle .LBB0_3 | 
|  | ; CHECK-NEXT:  # %bb.1: # %for.body.preheader | 
|  | ; CHECK-NEXT:    xorl %eax, %eax | 
|  | ; CHECK-NEXT:    movsd {{.*#+}} xmm0 = [2.2999999999999998E+0,0.0E+0] | 
|  | ; CHECK-NEXT:    .p2align 4 | 
|  | ; CHECK-NEXT:  .LBB0_2: # %for.body | 
|  | ; CHECK-NEXT:    # =>This Inner Loop Header: Depth=1 | 
|  | ; CHECK-NEXT:    movsd {{.*#+}} xmm1 = mem[0],zero | 
|  | ; CHECK-NEXT:    mulsd %xmm0, %xmm1 | 
|  | ; CHECK-NEXT:    movsd %xmm1, A(,%rax,8) | 
|  | ; CHECK-NEXT:    incq %rax | 
|  | ; CHECK-NEXT:    cmpq %rax, %rdi | 
|  | ; CHECK-NEXT:    jne .LBB0_2 | 
|  | ; CHECK-NEXT:  .LBB0_3: # %for.end | 
|  | ; CHECK-NEXT:    retq | 
|  | ; | 
|  | ; ATOM-LABEL: foo: | 
|  | ; ATOM:       # %bb.0: # %entry | 
|  | ; ATOM-NEXT:    testq %rdi, %rdi | 
|  | ; ATOM-NEXT:    jle .LBB0_3 | 
|  | ; ATOM-NEXT:  # %bb.1: # %for.body.preheader | 
|  | ; ATOM-NEXT:    xorl %eax, %eax | 
|  | ; ATOM-NEXT:    movsd {{.*#+}} xmm0 = [2.2999999999999998E+0,0.0E+0] | 
|  | ; ATOM-NEXT:    .p2align 4 | 
|  | ; ATOM-NEXT:  .LBB0_2: # %for.body | 
|  | ; ATOM-NEXT:    # =>This Inner Loop Header: Depth=1 | 
|  | ; ATOM-NEXT:    movsd {{.*#+}} xmm1 = mem[0],zero | 
|  | ; ATOM-NEXT:    mulsd %xmm0, %xmm1 | 
|  | ; ATOM-NEXT:    movsd %xmm1, A(,%rax,8) | 
|  | ; ATOM-NEXT:    leaq 1(%rax), %rax | 
|  | ; ATOM-NEXT:    cmpq %rax, %rdi | 
|  | ; ATOM-NEXT:    jne .LBB0_2 | 
|  | ; ATOM-NEXT:  .LBB0_3: # %for.end | 
|  | ; ATOM-NEXT:    nop | 
|  | ; ATOM-NEXT:    nop | 
|  | ; ATOM-NEXT:    nop | 
|  | ; ATOM-NEXT:    nop | 
|  | ; ATOM-NEXT:    retq | 
|  | entry: | 
|  | %cmp5 = icmp sgt i64 %n, 0 | 
|  | br i1 %cmp5, label %for.body, label %for.end | 
|  |  | 
|  | for.body: | 
|  | %i.06 = phi i64 [ %inc, %for.body ], [ 0, %entry ] | 
|  | %arrayidx = getelementptr [0 x double], ptr @A, i64 0, i64 %i.06 | 
|  | %tmp3 = load double, ptr %arrayidx, align 8 | 
|  | %mul = fmul double %tmp3, 2.300000e+00 | 
|  | store double %mul, ptr %arrayidx, align 8 | 
|  | %inc = add nsw i64 %i.06, 1 | 
|  | %exitcond = icmp eq i64 %inc, %n | 
|  | br i1 %exitcond, label %for.end, label %for.body | 
|  |  | 
|  | for.end: | 
|  | ret void | 
|  | } |