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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s
@X = common dso_local global i16 0 ; <ptr> [#uses=1]
define dso_local i32 @foo(i32 %N) nounwind {
; CHECK-LABEL: foo:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: jle .LBB0_2
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: .LBB0_1: # %bb
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movw %ax, X(%rip)
; CHECK-NEXT: incl %eax
; CHECK-NEXT: cmpl %eax, %edi
; CHECK-NEXT: jne .LBB0_1
; CHECK-NEXT: .LBB0_2: # %return
; CHECK-NEXT: retq
entry:
%0 = icmp sgt i32 %N, 0 ; <i1> [#uses=1]
br i1 %0, label %bb, label %return
bb: ; preds = %bb, %entry
%i.03 = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2]
%1 = trunc i32 %i.03 to i16 ; <i16> [#uses=1]
store volatile i16 %1, ptr @X, align 2
%indvar.next = add i32 %i.03, 1 ; <i32> [#uses=2]
%exitcond = icmp eq i32 %indvar.next, %N ; <i1> [#uses=1]
br i1 %exitcond, label %return, label %bb
return: ; preds = %bb, %entry
%h = phi i32 [ 0, %entry ], [ %indvar.next, %bb ]
ret i32 %h
}
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