| ; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S -simplifycfg | FileCheck %s |
| |
| 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" |
| |
| ; |
| ; We want to make sure that we are vectorizeing the scalar loop only once |
| ; even if the pass manager runs the vectorizer multiple times due to inlining. |
| |
| |
| ; This test checks that we add metadata to vectorized loops |
| ; CHECK-LABEL: @_Z4foo1Pii( |
| ; CHECK: <4 x i32> |
| ; CHECK: llvm.loop |
| ; CHECK: ret |
| |
| ; This test comes from the loop: |
| ; |
| ;int foo (int *A, int n) { |
| ; return std::accumulate(A, A + n, 0); |
| ;} |
| define i32 @_Z4foo1Pii(i32* %A, i32 %n) #0 { |
| entry: |
| %idx.ext = sext i32 %n to i64 |
| %add.ptr = getelementptr inbounds i32, i32* %A, i64 %idx.ext |
| %cmp3.i = icmp eq i32 %n, 0 |
| br i1 %cmp3.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i |
| |
| for.body.i: ; preds = %entry, %for.body.i |
| %__init.addr.05.i = phi i32 [ %add.i, %for.body.i ], [ 0, %entry ] |
| %__first.addr.04.i = phi i32* [ %incdec.ptr.i, %for.body.i ], [ %A, %entry ] |
| %0 = load i32, i32* %__first.addr.04.i, align 4 |
| %add.i = add nsw i32 %0, %__init.addr.05.i |
| %incdec.ptr.i = getelementptr inbounds i32, i32* %__first.addr.04.i, i64 1 |
| %cmp.i = icmp eq i32* %incdec.ptr.i, %add.ptr |
| br i1 %cmp.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i |
| |
| _ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %for.body.i, %entry |
| %__init.addr.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ] |
| ret i32 %__init.addr.0.lcssa.i |
| } |
| |
| ; This test checks that we don't vectorize loops that are marked with the "width" == 1 metadata. |
| ; CHECK-LABEL: @_Z4foo2Pii( |
| ; CHECK-NOT: <4 x i32> |
| ; CHECK: llvm.loop |
| ; CHECK: ret |
| define i32 @_Z4foo2Pii(i32* %A, i32 %n) #0 { |
| entry: |
| %idx.ext = sext i32 %n to i64 |
| %add.ptr = getelementptr inbounds i32, i32* %A, i64 %idx.ext |
| %cmp3.i = icmp eq i32 %n, 0 |
| br i1 %cmp3.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i |
| |
| for.body.i: ; preds = %entry, %for.body.i |
| %__init.addr.05.i = phi i32 [ %add.i, %for.body.i ], [ 0, %entry ] |
| %__first.addr.04.i = phi i32* [ %incdec.ptr.i, %for.body.i ], [ %A, %entry ] |
| %0 = load i32, i32* %__first.addr.04.i, align 4 |
| %add.i = add nsw i32 %0, %__init.addr.05.i |
| %incdec.ptr.i = getelementptr inbounds i32, i32* %__first.addr.04.i, i64 1 |
| %cmp.i = icmp eq i32* %incdec.ptr.i, %add.ptr |
| br i1 %cmp.i, label %_ZSt10accumulateIPiiET0_T_S2_S1_.exit, label %for.body.i, !llvm.loop !0 |
| |
| _ZSt10accumulateIPiiET0_T_S2_S1_.exit: ; preds = %for.body.i, %entry |
| %__init.addr.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ] |
| ret i32 %__init.addr.0.lcssa.i |
| } |
| |
| 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" } |
| |
| ; CHECK: !0 = distinct !{!0, !1} |
| ; CHECK: !1 = !{!"llvm.loop.isvectorized", i32 1} |
| ; CHECK: !2 = distinct !{!2, !3, !1} |
| ; CHECK: !3 = !{!"llvm.loop.unroll.runtime.disable"} |
| |
| !0 = !{!0, !1} |
| !1 = !{!"llvm.loop.vectorize.width", i32 1} |