1; RUN: opt < %s -passes=loop-vectorize,dce,instcombine -force-vector-interleave=1 -force-vector-width=4 -S -enable-if-conversion | FileCheck %s 2 3target 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: fc 6;CHECK: load <4 x i16> 7;CHECK-NEXT: shufflevector <4 x i16> 8;CHECK: select <4 x i1> 9;CHECK: store <4 x i16> 10;CHECK: ret 11define void @fc(ptr nocapture %p, i32 %n, i32 %size) nounwind uwtable ssp { 12entry: 13 br label %do.body 14 15do.body: ; preds = %cond.end, %entry 16 %n.addr.0 = phi i32 [ %n, %entry ], [ %dec, %cond.end ] 17 %p.addr.0 = phi ptr [ %p, %entry ], [ %incdec.ptr, %cond.end ] 18 %incdec.ptr = getelementptr inbounds i16, ptr %p.addr.0, i64 -1 19 %0 = load i16, ptr %incdec.ptr, align 2 20 %conv = zext i16 %0 to i32 21 %cmp = icmp ult i32 %conv, %size 22 br i1 %cmp, label %cond.end, label %cond.true 23 24cond.true: ; preds = %do.body 25 %sub = sub i32 %conv, %size 26 %phitmp = trunc i32 %sub to i16 27 br label %cond.end 28 29cond.end: ; preds = %do.body, %cond.true 30 %cond = phi i16 [ %phitmp, %cond.true ], [ 0, %do.body ] 31 store i16 %cond, ptr %incdec.ptr, align 2 32 %dec = add i32 %n.addr.0, -1 33 %tobool = icmp eq i32 %dec, 0 34 br i1 %tobool, label %do.end, label %do.body 35 36do.end: ; preds = %cond.end 37 ret void 38} 39 40;CHECK: example1 41;CHECK: load <4 x i32> 42;CHECK-NEXT: shufflevector <4 x i32> 43;CHECK: sub nsw <4 x i32> 44;CHECK: select <4 x i1> 45;CHECK: store <4 x i32> 46;CHECK: ret 47define void @example1(ptr nocapture %a, i32 %n, i32 %wsize) nounwind uwtable ssp { 48entry: 49 br label %do.body 50 51do.body: ; preds = %do.body, %entry 52 %n.addr.0 = phi i32 [ %n, %entry ], [ %dec, %do.body ] 53 %p.0 = phi ptr [ %a, %entry ], [ %incdec.ptr, %do.body ] 54 %incdec.ptr = getelementptr inbounds i32, ptr %p.0, i64 -1 55 %0 = load i32, ptr %incdec.ptr, align 4 56 %cmp = icmp slt i32 %0, %wsize 57 %sub = sub nsw i32 %0, %wsize 58 %cond = select i1 %cmp, i32 0, i32 %sub 59 store i32 %cond, ptr %incdec.ptr, align 4 60 %dec = add nsw i32 %n.addr.0, -1 61 %tobool = icmp eq i32 %dec, 0 62 br i1 %tobool, label %do.end, label %do.body 63 64do.end: ; preds = %do.body 65 ret void 66} 67