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; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
; PR3275
; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'func_15'
; CHECK-NOT: /u -1
@g_16 = external global i16 ; <i16*> [#uses=3]
@.str = external constant [4 x i8] ; <[4 x i8]*> [#uses=0]
define void @func_15() nounwind {
entry:
%0 = load i16* @g_16, align 2 ; <i16> [#uses=1]
%1 = icmp sgt i16 %0, 0 ; <i1> [#uses=1]
br i1 %1, label %bb2, label %bb.nph
bb.nph: ; preds = %entry
%g_16.promoted = load i16* @g_16 ; <i16> [#uses=1]
br label %bb
bb: ; preds = %bb1, %bb.nph
%g_16.tmp.0 = phi i16 [ %g_16.promoted, %bb.nph ], [ %2, %bb1 ] ; <i16> [#uses=1]
%2 = add i16 %g_16.tmp.0, -1 ; <i16> [#uses=3]
br label %bb1
bb1: ; preds = %bb
%3 = icmp sgt i16 %2, 0 ; <i1> [#uses=1]
br i1 %3, label %bb1.bb2_crit_edge, label %bb
bb1.bb2_crit_edge: ; preds = %bb1
store i16 %2, i16* @g_16
br label %bb2
bb2: ; preds = %bb1.bb2_crit_edge, %entry
br label %return
return: ; preds = %bb2
ret void
}
declare i32 @main() nounwind
declare i32 @printf(i8*, ...) nounwind
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