derek.holloway
7502bf64a4
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59 lines
2.5 KiB
LLVM
59 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 6
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; RUN: opt < %s -disable-output "-passes=print<da>" 2>&1 \
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; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-ALL
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; RUN: opt < %s -disable-output "-passes=print<da>" -da-enable-dependence-test=weak-crossing-siv 2>&1 \
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; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-WEAK-CROSSING-SIV
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; for (i = 0; i < 10; i++) {
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; A[a*i] = 0;
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; A[-a*i] = 1;
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; }
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;
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; When a == 0, there is a dependency with all directions between the two
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; stores.
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;
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define void @weak_crossing_siv_coeff_may_zero(ptr %A, i64 %a) {
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; CHECK-ALL-LABEL: 'weak_crossing_siv_coeff_may_zero'
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; CHECK-ALL-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 0, ptr %gep.0, align 1
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; CHECK-ALL-NEXT: da analyze - output [0]!
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; CHECK-ALL-NEXT: Runtime Assumptions:
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; CHECK-ALL-NEXT: Compare predicate: %a ne) 0
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; CHECK-ALL-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 1, ptr %gep.1, align 1
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; CHECK-ALL-NEXT: da analyze - output [*|<]!
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; CHECK-ALL-NEXT: Src: store i8 1, ptr %gep.1, align 1 --> Dst: store i8 1, ptr %gep.1, align 1
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; CHECK-ALL-NEXT: da analyze - output [0]!
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; CHECK-ALL-NEXT: Runtime Assumptions:
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; CHECK-ALL-NEXT: Compare predicate: (-1 * %a) ne) 0
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;
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; CHECK-WEAK-CROSSING-SIV-LABEL: 'weak_crossing_siv_coeff_may_zero'
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; CHECK-WEAK-CROSSING-SIV-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 0, ptr %gep.0, align 1
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; CHECK-WEAK-CROSSING-SIV-NEXT: da analyze - output [*]!
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; CHECK-WEAK-CROSSING-SIV-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 1, ptr %gep.1, align 1
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; CHECK-WEAK-CROSSING-SIV-NEXT: da analyze - output [*|<]!
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; CHECK-WEAK-CROSSING-SIV-NEXT: Src: store i8 1, ptr %gep.1, align 1 --> Dst: store i8 1, ptr %gep.1, align 1
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; CHECK-WEAK-CROSSING-SIV-NEXT: da analyze - output [*]!
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;
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entry:
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%a.neg = sub nsw i64 0, %a
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br label %loop
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loop:
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%i = phi i64 [ 0, %entry ], [ %i.inc, %loop ]
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%offset.0 = phi i64 [ 0, %entry ], [ %offset.0.next, %loop ]
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%offset.1 = phi i64 [ 0, %entry ], [ %offset.1.next, %loop ]
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%gep.0 = getelementptr i8, ptr %A, i64 %offset.0
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%gep.1 = getelementptr i8, ptr %A, i64 %offset.1
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store i8 0, ptr %gep.0
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store i8 1, ptr %gep.1
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%i.inc = add i64 %i, 1
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%offset.0.next = add nsw i64 %offset.0, %a
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%offset.1.next = add nsw i64 %offset.1, %a.neg
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%ec = icmp eq i64 %i.inc, 10
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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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;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
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; CHECK: {{.*}}
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