1; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S -simplifycfg | 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; 6; We want to make sure that we are vectorizeing the scalar loop only once 7; even if the pass manager runs the vectorizer multiple times due to inlining. 8 9 10; This test checks that we add metadata to vectorized loops 11; CHECK-LABEL: @_Z4foo1Pii( 12; CHECK: <4 x i32> 13; CHECK: llvm.loop 14; CHECK: ret 15 16; This test comes from the loop: 17; 18;int foo (int *A, int n) { 19; return std::accumulate(A, A + n, 0); 20;} 21define i32 @_Z4foo1Pii(i32* %A, i32 %n) #0 { 22entry: 23 %idx.ext = sext i32 %n to i64 24 %add.ptr = getelementptr inbounds i32, i32* %A, i64 %idx.ext 25 %cmp3.i = icmp eq i32 %n, 0 26 br i1 %cmp3.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i 27 28for.body.i: ; preds = %entry, %for.body.i 29 %__init.addr.05.i = phi i32 [ %add.i, %for.body.i ], [ 0, %entry ] 30 %__first.addr.04.i = phi i32* [ %incdec.ptr.i, %for.body.i ], [ %A, %entry ] 31 %0 = load i32, i32* %__first.addr.04.i, align 4 32 %add.i = add nsw i32 %0, %__init.addr.05.i 33 %incdec.ptr.i = getelementptr inbounds i32, i32* %__first.addr.04.i, i64 1 34 %cmp.i = icmp eq i32* %incdec.ptr.i, %add.ptr 35 br i1 %cmp.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i 36 37_ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %for.body.i, %entry 38 %__init.addr.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ] 39 ret i32 %__init.addr.0.lcssa.i 40} 41 42; This test checks that we don't vectorize loops that are marked with the "width" == 1 metadata. 43; CHECK-LABEL: @_Z4foo2Pii( 44; CHECK-NOT: <4 x i32> 45; CHECK: llvm.loop 46; CHECK: ret 47define i32 @_Z4foo2Pii(i32* %A, i32 %n) #0 { 48entry: 49 %idx.ext = sext i32 %n to i64 50 %add.ptr = getelementptr inbounds i32, i32* %A, i64 %idx.ext 51 %cmp3.i = icmp eq i32 %n, 0 52 br i1 %cmp3.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i 53 54for.body.i: ; preds = %entry, %for.body.i 55 %__init.addr.05.i = phi i32 [ %add.i, %for.body.i ], [ 0, %entry ] 56 %__first.addr.04.i = phi i32* [ %incdec.ptr.i, %for.body.i ], [ %A, %entry ] 57 %0 = load i32, i32* %__first.addr.04.i, align 4 58 %add.i = add nsw i32 %0, %__init.addr.05.i 59 %incdec.ptr.i = getelementptr inbounds i32, i32* %__first.addr.04.i, i64 1 60 %cmp.i = icmp eq i32* %incdec.ptr.i, %add.ptr 61 br i1 %cmp.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i, !llvm.loop !0 62 63_ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %for.body.i, %entry 64 %__init.addr.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ] 65 ret i32 %__init.addr.0.lcssa.i 66} 67 68attributes #0 = { nounwind readonly ssp uwtable "fp-contract-model"="standard" "no-frame-pointer-elim" "frame-pointer"="non-leaf" "realign-stack" "relocation-model"="pic" "ssp-buffers-size"="8" } 69 70; CHECK: !0 = distinct !{!0, !1} 71; CHECK: !1 = !{!"llvm.loop.isvectorized", i32 1} 72; CHECK: !2 = distinct !{!2, !3, !1} 73; CHECK: !3 = !{!"llvm.loop.unroll.runtime.disable"} 74 75!0 = !{!0, !1} 76!1 = !{!"llvm.loop.vectorize.width", i32 1} 77