derek.holloway
7502bf64a4
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289 lines
9.6 KiB
LLVM
289 lines
9.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes="print<access-info>" -disable-output %s 2>&1 | FileCheck %s
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define i32 @completely_before_or_after_true_dep_different_size(ptr %d) {
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; CHECK-LABEL: 'completely_before_or_after_true_dep_different_size'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%gep.128 = getelementptr i8, ptr %d, i64 128
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%gep.128.iv = getelementptr i64, ptr %gep.128, i64 %iv
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store i64 0, ptr %gep.128.iv, align 8
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%gep.iv = getelementptr i32, ptr %d, i64 %iv
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%l = load i32, ptr %gep.iv, align 4
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%iv.next = add i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 32
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br i1 %ec, label %exit, label %loop
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exit:
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ret i32 %l
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}
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define i32 @may_overlap_true_dep_different_size(ptr %d) {
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; CHECK-LABEL: 'may_overlap_true_dep_different_size'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe with run-time checks
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Check 0:
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; CHECK-NEXT: Comparing group GRP0:
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; CHECK-NEXT: %gep.128.iv = getelementptr i64, ptr %gep.128, i64 %iv
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; CHECK-NEXT: Against group GRP1:
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; CHECK-NEXT: %gep.iv = getelementptr i32, ptr %d, i64 %iv
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; CHECK-NEXT: Grouped accesses:
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; CHECK-NEXT: Group GRP0:
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; CHECK-NEXT: (Low: (127 + %d) High: (383 + %d))
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; CHECK-NEXT: Member: {(127 + %d),+,8}<nw><%loop>
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; CHECK-NEXT: Group GRP1:
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; CHECK-NEXT: (Low: %d High: (128 + %d))
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; CHECK-NEXT: Member: {%d,+,4}<nw><%loop>
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%gep.128 = getelementptr i8, ptr %d, i64 127
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%gep.128.iv = getelementptr i64, ptr %gep.128, i64 %iv
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store i64 0, ptr %gep.128.iv, align 8
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%gep.iv= getelementptr i32, ptr %d, i64 %iv
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%l = load i32, ptr %gep.iv, align 4
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%iv.next = add i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 32
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br i1 %ec, label %exit, label %loop
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exit:
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ret i32 %l
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}
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define void @completely_after_stores_with_different_sizes(ptr %dst) {
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; CHECK-LABEL: 'completely_after_stores_with_different_sizes'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%gep.dst.128 = getelementptr nuw i8, ptr %dst, i64 128
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%gep.iv = getelementptr i16, ptr %dst, i64 %iv
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store i16 0, ptr %gep.iv, align 2
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%gep.dst.128.iv = getelementptr i8, ptr %gep.dst.128, i64 %iv
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store i8 0, ptr %gep.dst.128.iv, align 1
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%iv.next = add i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 64
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @may_overlap_stores_with_different_sizes(ptr %dst) {
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; CHECK-LABEL: 'may_overlap_stores_with_different_sizes'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe with run-time checks
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Check 0:
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; CHECK-NEXT: Comparing group GRP0:
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; CHECK-NEXT: %gep.iv = getelementptr i16, ptr %dst, i64 %iv
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; CHECK-NEXT: Against group GRP1:
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; CHECK-NEXT: %gep.dst.128.iv = getelementptr i8, ptr %gep.dst.128, i64 %iv
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; CHECK-NEXT: Grouped accesses:
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; CHECK-NEXT: Group GRP0:
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; CHECK-NEXT: (Low: %dst High: (130 + %dst))
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; CHECK-NEXT: Member: {%dst,+,2}<nw><%loop>
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; CHECK-NEXT: Group GRP1:
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; CHECK-NEXT: (Low: (128 + %dst)<nuw> High: (193 + %dst))
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; CHECK-NEXT: Member: {(128 + %dst)<nuw>,+,1}<nw><%loop>
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%gep.dst.128 = getelementptr nuw i8, ptr %dst, i64 128
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%gep.iv = getelementptr i16, ptr %dst, i64 %iv
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store i16 0, ptr %gep.iv, align 2
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%gep.dst.128.iv = getelementptr i8, ptr %gep.dst.128, i64 %iv
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store i8 0, ptr %gep.dst.128.iv, align 1
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%iv.next = add i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 65
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br i1 %ec, label %exit, label %loop
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exit: ; preds = %loop
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ret void
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}
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define void @completely_before_or_after_non_const_distance(ptr %dst) {
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; CHECK-LABEL: 'completely_before_or_after_non_const_distance'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%gep.off = getelementptr i8, ptr %dst, i64 576
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%iv.mul = mul i64 %iv, 84
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%gep.404 = getelementptr i8, ptr %dst, i64 404
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%gep.iv.mul = getelementptr i8, ptr %gep.404, i64 %iv.mul
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store i32 0, ptr %gep.iv.mul, align 4
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%gep.off.iv = getelementptr i32, ptr %gep.off, i64 %iv
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store i32 0, ptr %gep.off.iv, align 4
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%iv.next = add i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 3
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @overlap_non_const_distance(ptr %dst) {
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; CHECK-LABEL: 'overlap_non_const_distance'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: store i32 0, ptr %gep.iv.mul, align 4 ->
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; CHECK-NEXT: store i32 0, ptr %gep.off.iv, align 4
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%gep.off = getelementptr i8, ptr %dst, i64 575
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%iv.mul = mul i64 %iv, 84
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%gep.404 = getelementptr i8, ptr %dst, i64 404
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%gep.iv.mul = getelementptr i8, ptr %gep.404, i64 %iv.mul
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store i32 0, ptr %gep.iv.mul, align 4
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%gep.off.iv = getelementptr i32, ptr %gep.off, i64 %iv
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store i32 0, ptr %gep.off.iv, align 4
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%iv.next = add i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 3
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @accesses_completely_before_or_after_instead_backwards_vectorizable(ptr dereferenceable(800) %dst) {
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; CHECK-LABEL: 'accesses_completely_before_or_after_instead_backwards_vectorizable'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%mul.2 = shl i64 %iv, 1
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%gep.mul.2 = getelementptr i16, ptr %dst, i64 %mul.2
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store i16 0, ptr %gep.mul.2, align 2
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%iv.32 = add i64 %iv, 32
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%gep.iv.32 = getelementptr i16, ptr %dst, i64 %iv.32
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store i16 0, ptr %gep.iv.32, align 2
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%iv.next = add i64 %iv, 1
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%ec = icmp eq i64 %iv, 15
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @accesses_may_overlap_backwards_vectorizable(ptr dereferenceable(800) %dst) {
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; CHECK-LABEL: 'accesses_may_overlap_backwards_vectorizable'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe with a maximum safe vector width of 128 bits
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: BackwardVectorizable:
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; CHECK-NEXT: store i16 0, ptr %gep.mul.2, align 2 ->
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; CHECK-NEXT: store i16 0, ptr %gep.iv.32, align 2
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%mul.2 = shl i64 %iv, 1
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%gep.mul.2 = getelementptr i16, ptr %dst, i64 %mul.2
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store i16 0, ptr %gep.mul.2, align 2
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%iv.32 = add i64 %iv, 32
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%gep.iv.32 = getelementptr i16, ptr %dst, i64 %iv.32
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store i16 0, ptr %gep.iv.32, align 2
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%iv.next = add i64 %iv, 1
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%ec = icmp eq i64 %iv, 16
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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