derek.holloway
7502bf64a4
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48 lines
2.2 KiB
LLVM
48 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --filter-out-after "scalar.ph:" --version 6
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; RUN: opt -p loop-vectorize -force-vector-width=4 -S %s | FileCheck %s
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define void @test_ptrtoaddr_tripcount(ptr %start, ptr %end) {
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; CHECK-LABEL: define void @test_ptrtoaddr_tripcount(
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; CHECK-SAME: ptr [[START:%.*]], ptr [[END:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[START_ADDR:%.*]] = ptrtoaddr ptr [[START]] to i64
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; CHECK-NEXT: [[END_ADDR:%.*]] = ptrtoaddr ptr [[END]] to i64
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[END_ADDR]], 1
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; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[TMP0]], [[START_ADDR]]
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; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP1]], 4
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; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
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; CHECK: [[VECTOR_PH]]:
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; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP1]], 4
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; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP1]], [[N_MOD_VF]]
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; CHECK-NEXT: [[TMP2:%.*]] = add i64 [[START_ADDR]], [[N_VEC]]
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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: [[OFFSET_IDX:%.*]] = add i64 [[START_ADDR]], [[INDEX]]
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; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i8, ptr [[START]], i64 [[OFFSET_IDX]]
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; CHECK-NEXT: store <4 x i8> zeroinitializer, ptr [[TMP3]], align 1
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
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; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[TMP4]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: [[MIDDLE_BLOCK]]:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP1]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[CMP_N]], [[EXIT:label %.*]], label %[[SCALAR_PH]]
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; CHECK: [[SCALAR_PH]]:
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;
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entry:
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%start.addr = ptrtoaddr ptr %start to i64
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%end.addr = ptrtoaddr ptr %end to i64
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br label %loop
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loop:
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%iv = phi i64 [ %start.addr, %entry ], [ %iv.next, %loop ]
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%gep = getelementptr inbounds i8, ptr %start, i64 %iv
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store i8 0, ptr %gep
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%iv.next = add i64 %iv, 1
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%cmp = icmp ne i64 %iv, %end.addr
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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