1 ; RUN: opt -S -loop-vectorize -instcombine -force-vector-width=4 < %s | FileCheck %s 2 3 target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" 4 5 ; Vectorization of loop with bitcast between GEP and load 6 ; Simplified source code: 7 ;void foo (double** __restrict__ in, bool * __restrict__ res) { 8 ; 9 ; for (int i = 0; i < 4096; ++i) 10 ; res[i] = ((unsigned long long)in[i] == 0); 11 ;} 12 13 ; CHECK-LABEL: @foo 14 ; CHECK: vector.body 15 ; CHECK: %[[IV:.+]] = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ] 16 ; CHECK: %[[v0:.+]] = getelementptr inbounds double*, double** %in, i64 %[[IV]] 17 ; CHECK: %[[v1:.+]] = bitcast double** %[[v0]] to <4 x i64>* 18 ; CHECK: %wide.load = load <4 x i64>, <4 x i64>* %[[v1]], align 8 19 ; CHECK: icmp eq <4 x i64> %wide.load, zeroinitializer 20 ; CHECK: br i1 21 22 define void @foo(double** noalias nocapture readonly %in, double** noalias nocapture readnone %out, i8* noalias nocapture %res) #0 { 23 entry: 24 br label %for.body 25 26 for.body: 27 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 28 %arrayidx = getelementptr inbounds double*, double** %in, i64 %indvars.iv 29 %tmp53 = bitcast double** %arrayidx to i64* 30 %tmp54 = load i64, i64* %tmp53, align 8 31 %cmp1 = icmp eq i64 %tmp54, 0 32 %arrayidx3 = getelementptr inbounds i8, i8* %res, i64 %indvars.iv 33 %frombool = zext i1 %cmp1 to i8 34 store i8 %frombool, i8* %arrayidx3, align 1 35 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 36 %exitcond = icmp eq i64 %indvars.iv.next, 4096 37 br i1 %exitcond, label %for.end, label %for.body 38 39 for.end: 40 ret void 41 } 42
