1 ; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S -simplifycfg | 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 ; 7 ; We want to make sure that we are vectorizeing the scalar loop only once 8 ; even if the pass manager runs the vectorizer multiple times due to inlining. 9 10 11 ; This test checks that we add metadata to vectorized loops 12 ; CHECK-LABEL: @_Z4foo1Pii( 13 ; CHECK: <4 x i32> 14 ; CHECK: llvm.loop 15 ; CHECK: ret 16 17 ; This test comes from the loop: 18 ; 19 ;int foo (int *A, int n) { 20 ; return std::accumulate(A, A + n, 0); 21 ;} 22 define i32 @_Z4foo1Pii(i32* %A, i32 %n) #0 { 23 entry: 24 %idx.ext = sext i32 %n to i64 25 %add.ptr = getelementptr inbounds i32, i32* %A, i64 %idx.ext 26 %cmp3.i = icmp eq i32 %n, 0 27 br i1 %cmp3.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i 28 29 for.body.i: ; preds = %entry, %for.body.i 30 %__init.addr.05.i = phi i32 [ %add.i, %for.body.i ], [ 0, %entry ] 31 %__first.addr.04.i = phi i32* [ %incdec.ptr.i, %for.body.i ], [ %A, %entry ] 32 %0 = load i32, i32* %__first.addr.04.i, align 4 33 %add.i = add nsw i32 %0, %__init.addr.05.i 34 %incdec.ptr.i = getelementptr inbounds i32, i32* %__first.addr.04.i, i64 1 35 %cmp.i = icmp eq i32* %incdec.ptr.i, %add.ptr 36 br i1 %cmp.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i 37 38 _ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %for.body.i, %entry 39 %__init.addr.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ] 40 ret i32 %__init.addr.0.lcssa.i 41 } 42 43 ; This test checks that we don't vectorize loops that are marked with the "width" == 1 metadata. 44 ; CHECK-LABEL: @_Z4foo2Pii( 45 ; CHECK-NOT: <4 x i32> 46 ; CHECK: llvm.loop 47 ; CHECK: ret 48 define i32 @_Z4foo2Pii(i32* %A, i32 %n) #0 { 49 entry: 50 %idx.ext = sext i32 %n to i64 51 %add.ptr = getelementptr inbounds i32, i32* %A, i64 %idx.ext 52 %cmp3.i = icmp eq i32 %n, 0 53 br i1 %cmp3.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i 54 55 for.body.i: ; preds = %entry, %for.body.i 56 %__init.addr.05.i = phi i32 [ %add.i, %for.body.i ], [ 0, %entry ] 57 %__first.addr.04.i = phi i32* [ %incdec.ptr.i, %for.body.i ], [ %A, %entry ] 58 %0 = load i32, i32* %__first.addr.04.i, align 4 59 %add.i = add nsw i32 %0, %__init.addr.05.i 60 %incdec.ptr.i = getelementptr inbounds i32, i32* %__first.addr.04.i, i64 1 61 %cmp.i = icmp eq i32* %incdec.ptr.i, %add.ptr 62 br i1 %cmp.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i, !llvm.loop !0 63 64 _ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %for.body.i, %entry 65 %__init.addr.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ] 66 ret i32 %__init.addr.0.lcssa.i 67 } 68 69 attributes #0 = { nounwind readonly ssp uwtable "fp-contract-model"="standard" "no-frame-pointer-elim" "no-frame-pointer-elim-non-leaf" "realign-stack" "relocation-model"="pic" "ssp-buffers-size"="8" } 70 71 ; CHECK: !0 = distinct !{!0, !1, !2} 72 ; CHECK: !1 = !{!"llvm.loop.vectorize.width", i32 1} 73 ; CHECK: !2 = !{!"llvm.loop.interleave.count", i32 1} 74 ; CHECK: !3 = distinct !{!3, !4, !1, !2} 75 ; CHECK: !4 = !{!"llvm.loop.unroll.runtime.disable"} 76 77 !0 = !{!0, !1} 78 !1 = !{!"llvm.loop.vectorize.width", i32 1} 79
