derek.holloway
7502bf64a4
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65 lines
2.1 KiB
LLVM
65 lines
2.1 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=strong-siv 2>&1 \
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; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-STRONG-SIV
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; for (i = 0; i < (1LL << 62); i++) {
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; if (0 <= 2*i - 2)
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; A[2*i - 2] = 1;
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;
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; if (0 <= 2*i - 4)
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; A[2*i - 4] = 2;
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; }
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;
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; There is a dependency with distance 1 between the two stores.
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define void @strongsiv_const_ovfl(ptr %A) {
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; CHECK-LABEL: 'strongsiv_const_ovfl'
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; CHECK-NEXT: Src: store i8 1, ptr %gep.0, align 1 --> Dst: store i8 1, ptr %gep.0, align 1
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; CHECK-NEXT: da analyze - none!
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; CHECK-NEXT: Src: store i8 1, ptr %gep.0, align 1 --> Dst: store i8 2, ptr %gep.1, align 1
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; CHECK-NEXT: da analyze - output [1]!
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; CHECK-NEXT: Src: store i8 2, ptr %gep.1, align 1 --> Dst: store i8 2, ptr %gep.1, align 1
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; CHECK-NEXT: da analyze - none!
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;
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entry:
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br label %loop.header
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loop.header:
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%i = phi i64 [ 0, %entry ], [ %i.inc, %loop.latch ]
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%offset.0 = phi i64 [ -2, %entry ], [ %offset.0.next, %loop.latch ]
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%offset.1 = phi i64 [ -4, %entry ], [ %offset.1.next, %loop.latch ]
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%ec = icmp eq i64 %i, 4611686018427387904
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br i1 %ec, label %exit, label %loop.body
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loop.body:
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%cond.0 = icmp sge i64 %offset.0, 0
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%cond.1 = icmp sge i64 %offset.1, 0
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br i1 %cond.0, label %if.then.0, label %loop.middle
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if.then.0:
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%gep.0 = getelementptr inbounds i8, ptr %A, i64 %offset.0
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store i8 1, ptr %gep.0
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br label %loop.middle
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loop.middle:
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br i1 %cond.1, label %if.then.1, label %loop.latch
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if.then.1:
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%gep.1 = getelementptr inbounds i8, ptr %A, i64 %offset.1
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store i8 2, ptr %gep.1
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br label %loop.latch
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loop.latch:
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%i.inc = add nuw nsw i64 %i, 1
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%offset.0.next = add nsw i64 %offset.0, 2
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%offset.1.next = add nsw i64 %offset.1, 2
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br label %loop.header
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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-ALL: {{.*}}
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; CHECK-STRONG-SIV: {{.*}}
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