1 ; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -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: @start_at_nonzero( 7 ;CHECK: mul nuw <4 x i32> 8 ;CHECK: ret i32 9 define i32 @start_at_nonzero(i32* nocapture %a, i32 %start, i32 %end) nounwind uwtable ssp { 10 entry: 11 %cmp3 = icmp slt i32 %start, %end 12 br i1 %cmp3, label %for.body.lr.ph, label %for.end 13 14 for.body.lr.ph: ; preds = %entry 15 %0 = sext i32 %start to i64 16 br label %for.body 17 18 for.body: ; preds = %for.body.lr.ph, %for.body 19 %indvars.iv = phi i64 [ %0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ] 20 %arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv 21 %1 = load i32* %arrayidx, align 4 22 %mul = mul nuw i32 %1, 333 23 store i32 %mul, i32* %arrayidx, align 4 24 %indvars.iv.next = add i64 %indvars.iv, 1 25 %2 = trunc i64 %indvars.iv.next to i32 26 %cmp = icmp slt i32 %2, %end 27 br i1 %cmp, label %for.body, label %for.end 28 29 for.end: ; preds = %for.body, %entry 30 ret i32 4 31 } 32
