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underlying-object-loop-varying-phi.ll
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; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 4
; RUN: opt -passes='print<access-info>' -disable-output %s 2>&1 | FileCheck %s
targetdatalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
; Test case for https://github.com/llvm/llvm-project/issues/82665.
definevoid@indirect_ptr_recurrences_read_write(ptr%A, ptr%B) {
; CHECK-LABEL: 'indirect_ptr_recurrences_read_write'
; CHECK-NEXT: loop:
; 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
; CHECK-NEXT: Unsafe indirect dependence.
; CHECK-NEXT: Dependences:
; CHECK-NEXT: IndirectUnsafe:
; CHECK-NEXT: %l = load i32, ptr %ptr.recur, align 4, !tbaa !4 ->
; CHECK-NEXT: store i32 %xor, ptr %ptr.recur, align 4, !tbaa !4
; CHECK-EMPTY:
; CHECK-NEXT: Run-time memory checks:
; CHECK-NEXT: Grouped accesses:
; CHECK-EMPTY:
; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
; CHECK-NEXT: SCEV assumptions:
; CHECK-EMPTY:
; CHECK-NEXT: Expressions re-written:
;
entry:
brlabel%loop
loop:
%iv = phii64 [ 1, %entry ], [ %iv.next, %loop ]
%ptr.recur = phiptr [ %A, %entry ], [ %ptr.next, %loop ]
%gep.B = getelementptrinboundsptr, ptr%B, i64%iv
%ptr.next = loadptr, ptr%gep.B, align8, !tbaa!6
%l = loadi32, ptr%ptr.recur, align4, !tbaa!10
%xor = xori32%l, 1
storei32%xor, ptr%ptr.recur, align4, !tbaa!10
%iv.next = addnuwnswi64%iv, 1
%ec = icmpeqi64%iv.next, 5
bri1%ec, label%exit, label%loop
exit:
retvoid
}
definei32@indirect_ptr_recurrences_read_only_loop(ptr%A, ptr%B) {
; CHECK-LABEL: 'indirect_ptr_recurrences_read_only_loop'
; CHECK-NEXT: loop:
; CHECK-NEXT: Memory dependences are safe
; CHECK-NEXT: Dependences:
; CHECK-NEXT: Run-time memory checks:
; CHECK-NEXT: Grouped accesses:
; CHECK-EMPTY:
; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
; CHECK-NEXT: SCEV assumptions:
; CHECK-EMPTY:
; CHECK-NEXT: Expressions re-written:
;
entry:
brlabel%loop
loop:
%iv = phii64 [ 1, %entry ], [ %iv.next, %loop ]
%ptr.recur = phiptr [ %A, %entry ], [ %ptr.next, %loop ]
%red = phii32 [ 0, %entry ], [ %xor, %loop ]
%gep.B = getelementptrinboundsptr, ptr%B, i64%iv
%ptr.next = loadptr, ptr%gep.B, align8, !tbaa!6
%l = loadi32, ptr%ptr.recur, align4, !tbaa!10
%xor = xori32%l, 1
%iv.next = addnuwnswi64%iv, 1
%ec = icmpeqi64%iv.next, 5
bri1%ec, label%exit, label%loop
exit:
reti32%xor
}
definevoid@indirect_ptr_recurrences_read_write_may_alias_no_tbaa(ptr%A, ptr%B) {
; CHECK-LABEL: 'indirect_ptr_recurrences_read_write_may_alias_no_tbaa'
; CHECK-NEXT: loop:
; CHECK-NEXT: Report: cannot identify array bounds
; CHECK-NEXT: Dependences:
; CHECK-NEXT: Run-time memory checks:
; CHECK-NEXT: Grouped accesses:
; CHECK-EMPTY:
; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
; CHECK-NEXT: SCEV assumptions:
; CHECK-EMPTY:
; CHECK-NEXT: Expressions re-written:
;
entry:
brlabel%loop
loop:
%iv = phii64 [ 1, %entry ], [ %iv.next, %loop ]
%ptr.recur = phiptr [ %A, %entry ], [ %ptr.next, %loop ]
%gep.B = getelementptrinboundsptr, ptr%B, i64%iv
%ptr.next = loadptr, ptr%gep.B, align8, !tbaa!6
%l = loadi32, ptr%ptr.recur, align4
%xor = xori32%l, 1
storei32%xor, ptr%ptr.recur, align4
%iv.next = addnuwnswi64%iv, 1
%ec = icmpeqi64%iv.next, 5
bri1%ec, label%exit, label%loop
exit:
retvoid
}
definevoid@indirect_ptr_recurrences_read_write_may_alias_different_obj(ptr%A, ptr%B, ptr%C) {
; CHECK-LABEL: 'indirect_ptr_recurrences_read_write_may_alias_different_obj'
; CHECK-NEXT: loop:
; CHECK-NEXT: Report: cannot identify array bounds
; CHECK-NEXT: Dependences:
; CHECK-NEXT: Run-time memory checks:
; CHECK-NEXT: Grouped accesses:
; CHECK-EMPTY:
; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
; CHECK-NEXT: SCEV assumptions:
; CHECK-EMPTY:
; CHECK-NEXT: Expressions re-written:
;
entry:
brlabel%loop
loop:
%iv = phii64 [ 1, %entry ], [ %iv.next, %loop ]
%ptr.recur = phiptr [ %A, %entry ], [ %ptr.next, %loop ]
%gep.B = getelementptrinboundsptr, ptr%B, i64%iv
%ptr.next = loadptr, ptr%gep.B, align8, !tbaa!6
%l = loadi32, ptr%ptr.recur, align4
%xor = xori32%l, 1
%gep.C = getelementptrinboundsptr, ptr%C, i64%iv
storei32%xor, ptr%gep.C, align4
%iv.next = addnuwnswi64%iv, 1
%ec = icmpeqi64%iv.next, 5
bri1%ec, label%exit, label%loop
exit:
retvoid
}
definevoid@indirect_ptr_recurrences_read_write_may_noalias_different_obj(ptr%A, ptr%B, ptrnoalias%C) {
; CHECK-LABEL: 'indirect_ptr_recurrences_read_write_may_noalias_different_obj'
; CHECK-NEXT: loop:
; CHECK-NEXT: Memory dependences are safe
; CHECK-NEXT: Dependences:
; CHECK-NEXT: Run-time memory checks:
; CHECK-NEXT: Grouped accesses:
; CHECK-EMPTY:
; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
; CHECK-NEXT: SCEV assumptions:
; CHECK-EMPTY:
; CHECK-NEXT: Expressions re-written:
;
entry:
brlabel%loop
loop:
%iv = phii64 [ 1, %entry ], [ %iv.next, %loop ]
%ptr.recur = phiptr [ %A, %entry ], [ %ptr.next, %loop ]
%gep.B = getelementptrinboundsptr, ptr%B, i64%iv
%ptr.next = loadptr, ptr%gep.B, align8, !tbaa!6
%l = loadi32, ptr%ptr.recur, align4
%xor = xori32%l, 1
%gep.C = getelementptrinboundsptr, ptr%C, i64%iv
storei32%xor, ptr%gep.C, align4
%iv.next = addnuwnswi64%iv, 1
%ec = icmpeqi64%iv.next, 5
bri1%ec, label%exit, label%loop
exit:
retvoid
}
!6 = !{!7, !7, i640}
!7 = !{!"any pointer", !8, i640}
!8 = !{!"omnipotent char", !9, i640}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !11, i640}
!11 = !{!"int", !8, i640}
