1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s 3 4@X = common dso_local global i16 0 ; <i16*> [#uses=1] 5 6define dso_local i32 @foo(i32 %N) nounwind { 7; CHECK-LABEL: foo: 8; CHECK: # %bb.0: # %entry 9; CHECK-NEXT: xorl %eax, %eax 10; CHECK-NEXT: testl %edi, %edi 11; CHECK-NEXT: jle .LBB0_2 12; CHECK-NEXT: .p2align 4, 0x90 13; CHECK-NEXT: .LBB0_1: # %bb 14; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 15; CHECK-NEXT: movw %ax, X(%rip) 16; CHECK-NEXT: incl %eax 17; CHECK-NEXT: cmpl %eax, %edi 18; CHECK-NEXT: jne .LBB0_1 19; CHECK-NEXT: .LBB0_2: # %return 20; CHECK-NEXT: retq 21entry: 22 %0 = icmp sgt i32 %N, 0 ; <i1> [#uses=1] 23 br i1 %0, label %bb, label %return 24 25bb: ; preds = %bb, %entry 26 %i.03 = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2] 27 %1 = trunc i32 %i.03 to i16 ; <i16> [#uses=1] 28 store volatile i16 %1, i16* @X, align 2 29 %indvar.next = add i32 %i.03, 1 ; <i32> [#uses=2] 30 %exitcond = icmp eq i32 %indvar.next, %N ; <i1> [#uses=1] 31 br i1 %exitcond, label %return, label %bb 32 33return: ; preds = %bb, %entry 34 %h = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] 35 ret i32 %h 36} 37