1 ; RUN: opt < %s -loop-vectorize -force-vector-width=1 -force-target-num-scalar-regs=16 -force-target-max-scalar-interleave=8 -force-target-instruction-cost=1 -small-loop-cost=40 -dce -instcombine -S | FileCheck %s
3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
5 @a = common global [2048 x i32] zeroinitializer, align 16
12 ;CHECK: load i32, i32*
13 ;CHECK: load i32, i32*
14 ;CHECK: load i32, i32*
15 ;CHECK: load i32, i32*
16 ;CHECK-NOT: load i32, i32*
21 ;CHECK-NOT: add nsw i32
27 ;CHECK: add i64 %{{.*}}, 4
29 define void @inc(i32 %n) nounwind uwtable noinline ssp {
30 %1 = icmp sgt i32 %n, 0
31 br i1 %1, label %.lr.ph, label %._crit_edge
33 .lr.ph: ; preds = %0, %.lr.ph
34 %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
35 %2 = getelementptr inbounds [2048 x i32], [2048 x i32]* @a, i64 0, i64 %indvars.iv
36 %3 = load i32, i32* %2, align 4
37 %4 = trunc i64 %indvars.iv to i32
38 %5 = add nsw i32 %3, %4
39 store i32 %5, i32* %2, align 4
40 %indvars.iv.next = add i64 %indvars.iv, 1
41 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
42 %exitcond = icmp eq i32 %lftr.wideiv, %n
43 br i1 %exitcond, label %._crit_edge, label %.lr.ph
45 ._crit_edge: ; preds = %.lr.ph, %0