derek.holloway
7502bf64a4
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77 lines
3.0 KiB
LLVM
77 lines
3.0 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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; max_i = INT64_MAX/6 // 1537228672809129301
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; for (i = 0; i <= max_i; i++) {
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; A[-6*i + INT64_MAX] = 0;
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; }
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;
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; for (i = 0; i <= max_i + 1; i++) {
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; if (i)
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; A[3*i - 2] = 1;
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; }
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;
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; memory access | i = 1 | i = 768614336404564651 | i = max_i
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; -------------------------|-------|------------------------|----------------
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; A[-6*i + INT64_MAX] | | A[3*max_i - 2] | A[1]
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; A[3*i - 2] | A[1] | | A[3*max_i - 2]
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;
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; There is a dependency between the two stores.
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;
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define void @exact_rdiv_delta_ovfl(ptr %A) {
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; CHECK-ALL-LABEL: 'exact_rdiv_delta_ovfl'
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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 - none!
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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_delta_ovfl'
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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
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loop.0:
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%i.0 = phi i64 [ 0, %entry ], [ %i.0.inc, %loop.0 ]
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%offset.0 = phi i64 [ 9223372036854775807, %entry ], [ %offset.0.next, %loop.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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%i.0.inc = add i64 %i.0, 1
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%offset.0.next = add i64 %offset.0, -6
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%ec.0 = icmp eq i64 %i.0, 1537228672809129301
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br i1 %ec.0, label %loop.1.header, label %loop.0
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loop.1.header:
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%i.1 = phi i64 [ 0, %loop.0 ], [ %i.1.inc, %loop.1.latch ]
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%offset.1 = phi i64 [ -2, %loop.0 ], [ %offset.1.next, %loop.1.latch ]
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%cond.store = icmp ne i64 %i.1, 0
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br i1 %cond.store, label %if.store, label %loop.1.latch
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if.store:
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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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br label %loop.1.latch
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loop.1.latch:
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%i.1.inc = add i64 %i.1, 1
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%offset.1.next = add i64 %offset.1, 3
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%ec.1 = icmp eq i64 %i.1, 1537228672809129302
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br i1 %ec.1, label %exit, label %loop.1.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: {{.*}}
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