8907b6d393
Build on top of https://github.com/llvm/llvm-project/pull/154510 to completely remove the blocks of dead scalar loops. Depends on https://github.com/llvm/llvm-project/pull/154510. PR: https://github.com/llvm/llvm-project/pull/155497
73 lines
3.9 KiB
LLVM
73 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -passes=loop-vectorize -tail-predication=enabled -prefer-predicate-over-epilogue=predicate-dont-vectorize -enable-wide-lane-mask -S | FileCheck %s
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target triple = "thumbv8.1m.main-arm-unknown-eabihf"
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define void @f0(ptr noalias %dst, ptr readonly %src, i64 %n) #0 {
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; CHECK-LABEL: define void @f0(
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; CHECK-SAME: ptr noalias [[DST:%.*]], ptr readonly [[SRC:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[VAL:%.*]] = icmp sgt i64 [[N]], 0
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; CHECK-NEXT: br i1 [[VAL]], label %[[FOR_BODY_PREHEADER:.*]], label %[[FOR_END:.*]]
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; CHECK: [[FOR_BODY_PREHEADER]]:
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; CHECK-NEXT: br label %[[VECTOR_PH:.*]]
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; CHECK: [[VECTOR_PH]]:
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; CHECK-NEXT: [[N_RND_UP:%.*]] = add i64 [[N]], 31
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; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N_RND_UP]], 32
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; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N_RND_UP]], [[N_MOD_VF]]
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; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
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; CHECK: [[VECTOR_BODY]]:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 16
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; CHECK-NEXT: [[ACTIVE_LANE_MASK:%.*]] = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i64(i64 [[INDEX]], i64 [[N]])
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; CHECK-NEXT: [[ACTIVE_LANE_MASK1:%.*]] = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i64(i64 [[TMP0]], i64 [[N]])
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i64 [[INDEX]]
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; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i32 16
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; CHECK-NEXT: [[WIDE_MASKED_LOAD:%.*]] = call <16 x i8> @llvm.masked.load.v16i8.p0(ptr [[TMP1]], i32 1, <16 x i1> [[ACTIVE_LANE_MASK]], <16 x i8> poison)
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; CHECK-NEXT: [[WIDE_MASKED_LOAD2:%.*]] = call <16 x i8> @llvm.masked.load.v16i8.p0(ptr [[TMP3]], i32 1, <16 x i1> [[ACTIVE_LANE_MASK1]], <16 x i8> poison)
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; CHECK-NEXT: [[TMP4:%.*]] = mul <16 x i8> [[WIDE_MASKED_LOAD]], splat (i8 3)
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; CHECK-NEXT: [[TMP5:%.*]] = mul <16 x i8> [[WIDE_MASKED_LOAD2]], splat (i8 3)
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 [[INDEX]]
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i8, ptr [[TMP6]], i32 16
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; CHECK-NEXT: call void @llvm.masked.store.v16i8.p0(<16 x i8> [[TMP4]], ptr [[TMP6]], i32 1, <16 x i1> [[ACTIVE_LANE_MASK]])
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; CHECK-NEXT: call void @llvm.masked.store.v16i8.p0(<16 x i8> [[TMP5]], ptr [[TMP8]], i32 1, <16 x i1> [[ACTIVE_LANE_MASK1]])
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; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 32
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; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[TMP9]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: [[MIDDLE_BLOCK]]:
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; CHECK-NEXT: br label %[[FOR_END_LOOPEXIT:.*]]
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; CHECK: [[FOR_END_LOOPEXIT]]:
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; CHECK-NEXT: br label %[[FOR_END]]
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; CHECK: [[FOR_END]]:
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; CHECK-NEXT: ret void
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;
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entry:
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%val = icmp sgt i64 %n, 0
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br i1 %val, label %for.body, label %for.end
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i8, ptr %src, i64 %indvars.iv
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%0 = load i8, ptr %arrayidx, align 1
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%mul = mul i8 %0, 3
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%arrayidx3 = getelementptr inbounds i8, ptr %dst, i64 %indvars.iv
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store i8 %mul, ptr %arrayidx3, align 1
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond.not = icmp eq i64 %indvars.iv.next, %n
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br i1 %exitcond.not, label %for.end, label %for.body, !llvm.loop !1
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for.end:
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ret void
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}
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attributes #0 = { nofree norecurse nounwind "target-features"="+armv8.1-m.main,+mve.fp" }
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!1 = distinct !{!1, !2, !3}
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!2 = !{!"llvm.loop.vectorize.width", i32 16}
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!3 = !{!"llvm.loop.interleave.count", i32 2}
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;.
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; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
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; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
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; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
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;.
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