derek.holloway
7502bf64a4
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77 lines
2.8 KiB
LLVM
77 lines
2.8 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=exact-rdiv 2>&1 \
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; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-EXACT-RDIV
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; a = 6148914691236517210; // 6148914691236517210 = ((2^64) - 1) / 3 + 5
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; for (i = 0; i < 10; i++) {
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; if (0 <=s a*i)
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; A[a*i] = 0;
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; }
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;
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; for (i = 0; i < 9; i++) {
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; A[5*i + 14] = 1;
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; }
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;
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; The dependency exists between the two stores, for example,
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;
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; memory access | i == 0 | i == 3
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; ---------------|--------|--------
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; A[a*i] | | A[14]
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; A[5*i + 14] | A[14] |
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;
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define void @exact_rdiv_no_nsw(ptr %A) {
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; CHECK-ALL-LABEL: 'exact_rdiv_no_nsw'
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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 [*]!
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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 - none!
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;
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; CHECK-EXACT-RDIV-LABEL: 'exact_rdiv_no_nsw'
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; CHECK-EXACT-RDIV-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 0, ptr %gep.0, align 1
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; CHECK-EXACT-RDIV-NEXT: da analyze - output [*]!
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; CHECK-EXACT-RDIV-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 1, ptr %gep.1, align 1
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; CHECK-EXACT-RDIV-NEXT: da analyze - output [|<]!
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; CHECK-EXACT-RDIV-NEXT: Src: store i8 1, ptr %gep.1, align 1 --> Dst: store i8 1, ptr %gep.1, align 1
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; CHECK-EXACT-RDIV-NEXT: da analyze - output [*]!
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;
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entry:
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br label %loop.0.header
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loop.0.header:
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%i.0 = phi i64 [ 0, %entry ], [ %i.0.inc, %loop.0.latch ]
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%offset.0 = phi i64 [ 0, %entry ], [ %offset.0.next, %loop.0.latch ]
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%cond.0 = icmp sge i64 %i.0, 0
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br i1 %cond.0, label %if.then.0, label %loop.0.latch
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if.then.0:
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%gep.0 = getelementptr i8, ptr %A, i64 %offset.0
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store i8 0, ptr %gep.0
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br label %loop.0.latch
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loop.0.latch:
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%i.0.inc = add i64 %i.0, 1
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%offset.0.next = add i64 %offset.0, 6148914691236517210
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%ec.0 = icmp eq i64 %i.0.inc, 10
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br i1 %ec.0, label %loop.1, label %loop.0.header
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loop.1:
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%i.1 = phi i64 [ 0, %loop.0.latch ], [ %i.1.inc, %loop.1 ]
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%offset.1 = phi i64 [ 14, %loop.0.latch ], [ %offset.1.next, %loop.1 ]
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%gep.1 = getelementptr i8, ptr %A, i64 %offset.1
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store i8 1, ptr %gep.1
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%i.1.inc = add i64 %i.1, 1
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%offset.1.next = add i64 %offset.1, 5
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%ec.1 = icmp eq i64 %i.1.inc, 9
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br i1 %ec.1, label %exit, label %loop.1
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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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