1 ; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s 2 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" 4 target triple = "x86_64-apple-macosx10.8.0" 5 6 ;CHECK-LABEL: @read_only_func( 7 ;CHECK: load <4 x i32> 8 ;CHECK: ret i32 9 define i32 @read_only_func(i32* nocapture %A, i32* nocapture %B, i32 %n) nounwind uwtable readonly ssp { 10 %1 = icmp sgt i32 %n, 0 11 br i1 %1, label %.lr.ph, label %._crit_edge 12 13 .lr.ph: ; preds = %0, %.lr.ph 14 %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ] 15 %sum.02 = phi i32 [ %9, %.lr.ph ], [ 0, %0 ] 16 %2 = getelementptr inbounds i32* %A, i64 %indvars.iv 17 %3 = load i32* %2, align 4 18 %4 = add nsw i64 %indvars.iv, 13 19 %5 = getelementptr inbounds i32* %B, i64 %4 20 %6 = load i32* %5, align 4 21 %7 = shl i32 %6, 1 22 %8 = add i32 %3, %sum.02 23 %9 = add i32 %8, %7 24 %indvars.iv.next = add i64 %indvars.iv, 1 25 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 26 %exitcond = icmp eq i32 %lftr.wideiv, %n 27 br i1 %exitcond, label %._crit_edge, label %.lr.ph 28 29 ._crit_edge: ; preds = %.lr.ph, %0 30 %sum.0.lcssa = phi i32 [ 0, %0 ], [ %9, %.lr.ph ] 31 ret i32 %sum.0.lcssa 32 } 33
