| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S | 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" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; A tricky loop: |
| ; |
| ; void loop(int *a, int *b) { |
| ; for (int i = 0; i < 512; ++i) { |
| ; a[a[i]] = b[i]; |
| ; a[i] = b[i+1]; |
| ; } |
| ;} |
| |
| define void @loop(i32* nocapture %a, i32* nocapture %b) nounwind uwtable { |
| ; CHECK-LABEL: @loop( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4 |
| ; CHECK-NEXT: [[IDXPROM3:%.*]] = sext i32 [[TMP1]] to i64 |
| ; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[IDXPROM3]] |
| ; CHECK-NEXT: store i32 [[TMP0]], i32* [[ARRAYIDX4]], align 4 |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[ARRAYIDX6:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDVARS_IV_NEXT]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX6]], align 4 |
| ; CHECK-NEXT: store i32 [[TMP2]], i32* [[ARRAYIDX2]], align 4 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], 512 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %1 = load i32, i32* %arrayidx2, align 4 |
| %idxprom3 = sext i32 %1 to i64 |
| %arrayidx4 = getelementptr inbounds i32, i32* %a, i64 %idxprom3 |
| store i32 %0, i32* %arrayidx4, align 4 |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| %arrayidx6 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv.next |
| %2 = load i32, i32* %arrayidx6, align 4 |
| store i32 %2, i32* %arrayidx2, align 4 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, 512 |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body |
| ret void |
| } |
| |
| ; The same loop with parallel loop metadata added to the loop branch |
| ; and the memory instructions. |
| |
| define void @parallel_loop(i32* nocapture %a, i32* nocapture %b) nounwind uwtable { |
| ; CHECK-LABEL: @parallel_loop( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = or i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = or i64 [[INDEX]], 2 |
| ; CHECK-NEXT: [[TMP2:%.*]] = or i64 [[INDEX]], 3 |
| ; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[TMP3]] to <4 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, <4 x i32>* [[TMP4]], align 4, !llvm.access.group !0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP1]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP2]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = load i32, i32* [[TMP5]], align 4, !llvm.access.group !0 |
| ; CHECK-NEXT: [[TMP10:%.*]] = load i32, i32* [[TMP6]], align 4, !llvm.access.group !0 |
| ; CHECK-NEXT: [[TMP11:%.*]] = load i32, i32* [[TMP7]], align 4, !llvm.access.group !0 |
| ; CHECK-NEXT: [[TMP12:%.*]] = load i32, i32* [[TMP8]], align 4, !llvm.access.group !0 |
| ; CHECK-NEXT: [[TMP13:%.*]] = sext i32 [[TMP9]] to i64 |
| ; CHECK-NEXT: [[TMP14:%.*]] = sext i32 [[TMP10]] to i64 |
| ; CHECK-NEXT: [[TMP15:%.*]] = sext i32 [[TMP11]] to i64 |
| ; CHECK-NEXT: [[TMP16:%.*]] = sext i32 [[TMP12]] to i64 |
| ; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP13]] |
| ; CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP14]] |
| ; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP15]] |
| ; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP16]] |
| ; CHECK-NEXT: [[TMP21:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 0 |
| ; CHECK-NEXT: store i32 [[TMP21]], i32* [[TMP17]], align 4, !llvm.access.group !1 |
| ; CHECK-NEXT: [[TMP22:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 1 |
| ; CHECK-NEXT: store i32 [[TMP22]], i32* [[TMP18]], align 4, !llvm.access.group !1 |
| ; CHECK-NEXT: [[TMP23:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 2 |
| ; CHECK-NEXT: store i32 [[TMP23]], i32* [[TMP19]], align 4, !llvm.access.group !1 |
| ; CHECK-NEXT: [[TMP24:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 3 |
| ; CHECK-NEXT: store i32 [[TMP24]], i32* [[TMP20]], align 4, !llvm.access.group !1 |
| ; CHECK-NEXT: [[TMP25:%.*]] = or i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP26:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[TMP25]] |
| ; CHECK-NEXT: [[TMP27:%.*]] = bitcast i32* [[TMP26]] to <4 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP27]], align 4, !llvm.access.group !0 |
| ; CHECK-NEXT: [[TMP28:%.*]] = bitcast i32* [[TMP5]] to <4 x i32>* |
| ; CHECK-NEXT: store <4 x i32> [[WIDE_LOAD1]], <4 x i32>* [[TMP28]], align 4, !llvm.access.group !0 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP29:%.*]] = icmp eq i64 [[INDEX_NEXT]], 512 |
| ; CHECK-NEXT: br i1 [[TMP29]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: br i1 undef, label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4, !llvm.access.group !13 |
| %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %1 = load i32, i32* %arrayidx2, align 4, !llvm.access.group !13 |
| %idxprom3 = sext i32 %1 to i64 |
| %arrayidx4 = getelementptr inbounds i32, i32* %a, i64 %idxprom3 |
| ; This store might have originated from inlining a function with a parallel |
| ; loop. Refers to a list with the "original loop reference" (!4) also included. |
| store i32 %0, i32* %arrayidx4, align 4, !llvm.access.group !15 |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| %arrayidx6 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv.next |
| %2 = load i32, i32* %arrayidx6, align 4, !llvm.access.group !13 |
| store i32 %2, i32* %arrayidx2, align 4, !llvm.access.group !13 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, 512 |
| br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !3 |
| |
| for.end: ; preds = %for.body |
| ret void |
| } |
| |
| ; The same loop with an illegal parallel loop metadata: the memory |
| ; accesses refer to a different loop's identifier. |
| |
| |
| define void @mixed_metadata(i32* nocapture %a, i32* nocapture %b) nounwind uwtable { |
| ; CHECK-LABEL: @mixed_metadata( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4, !llvm.access.group !7 |
| ; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX2]], align 4, !llvm.access.group !7 |
| ; CHECK-NEXT: [[IDXPROM3:%.*]] = sext i32 [[TMP1]] to i64 |
| ; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[IDXPROM3]] |
| ; CHECK-NEXT: store i32 [[TMP0]], i32* [[ARRAYIDX4]], align 4, !llvm.access.group !8 |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[ARRAYIDX6:%.*]] = getelementptr inbounds i32, i32* [[B]], i64 [[INDVARS_IV_NEXT]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX6]], align 4, !llvm.access.group !7 |
| ; CHECK-NEXT: store i32 [[TMP2]], i32* [[ARRAYIDX2]], align 4, !llvm.access.group !7 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], 512 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4, !llvm.access.group !16 |
| %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %1 = load i32, i32* %arrayidx2, align 4, !llvm.access.group !16 |
| %idxprom3 = sext i32 %1 to i64 |
| %arrayidx4 = getelementptr inbounds i32, i32* %a, i64 %idxprom3 |
| ; This refers to the loop marked with !7 which we are not in at the moment. |
| ; It should prevent detecting as a parallel loop. |
| store i32 %0, i32* %arrayidx4, align 4, !llvm.access.group !17 |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| %arrayidx6 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv.next |
| %2 = load i32, i32* %arrayidx6, align 4, !llvm.access.group !16 |
| store i32 %2, i32* %arrayidx2, align 4, !llvm.access.group !16 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, 512 |
| br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !6 |
| |
| for.end: ; preds = %for.body |
| ret void |
| } |
| |
| !3 = !{!3, !{!"llvm.loop.parallel_accesses", !13, !15}} |
| !4 = !{!4, !{!"llvm.loop.parallel_accesses", !14, !15}} |
| !6 = !{!6, !{!"llvm.loop.parallel_accesses", !16}} |
| !7 = !{!7, !{!"llvm.loop.parallel_accesses", !17}} |
| !13 = distinct !{} |
| !14 = distinct !{} |
| !15 = distinct !{} |
| !16 = distinct !{} |
| !17 = distinct !{} |