1 ; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -enable-if-conversion -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 5 ;CHECK-LABEL: @foo( 6 ;CHECK: icmp sgt 7 ;CHECK: icmp sgt 8 ;CHECK: icmp slt 9 ;CHECK: select <4 x i1> 10 ;CHECK: %[[P1:.*]] = select <4 x i1> 11 ;CHECK: xor <4 x i1> 12 ;CHECK: and <4 x i1> 13 ;CHECK: select <4 x i1> %{{.*}}, <4 x i32> %{{.*}}, <4 x i32> %[[P1]] 14 ;CHECK: ret 15 define i32 @foo(i32* nocapture %A, i32* nocapture %B, i32 %n) { 16 entry: 17 %cmp26 = icmp sgt i32 %n, 0 18 br i1 %cmp26, label %for.body, label %for.end 19 20 for.body: 21 %indvars.iv = phi i64 [ %indvars.iv.next, %if.end14 ], [ 0, %entry ] 22 %arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv 23 %0 = load i32* %arrayidx, align 4 24 %arrayidx2 = getelementptr inbounds i32* %B, i64 %indvars.iv 25 %1 = load i32* %arrayidx2, align 4 26 %cmp3 = icmp sgt i32 %0, %1 27 br i1 %cmp3, label %if.then, label %if.end14 28 29 if.then: 30 %cmp6 = icmp sgt i32 %0, 19 31 br i1 %cmp6, label %if.end14, label %if.else 32 33 if.else: 34 %cmp10 = icmp slt i32 %1, 4 35 %. = select i1 %cmp10, i32 4, i32 5 36 br label %if.end14 37 38 if.end14: 39 %x.0 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %., %if.else ] ; <------------- A PHI with 3 entries that we can still vectorize. 40 store i32 %x.0, i32* %arrayidx, align 4 41 %indvars.iv.next = add i64 %indvars.iv, 1 42 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 43 %exitcond = icmp eq i32 %lftr.wideiv, %n 44 br i1 %exitcond, label %for.end, label %for.body 45 46 for.end: 47 ret i32 undef 48 } 49
