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