derek.holloway
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53 lines
1.9 KiB
LLVM
53 lines
1.9 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-siv 2>&1 \
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; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-EXACT-SIV
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target datalayout = "e-m:e-p:32:32-i64:64-n32-S128"
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; for (i = 0; i < 160000000; i++) {
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; A[5*i] = 0;
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; A[8*i + 750000000] = 1;
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; }
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;
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; There is a dependency between the two accesses, for example,
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;
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; memory access | i = 0 | i = 150000000
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; -------------------|---------------|---------------
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; A[5*i] | | A[750000000]
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; A[8*i + 750000000]| A[750000000] |
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;
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;
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define void @exactsiv_mul_overflow(ptr %A) {
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; CHECK-LABEL: 'exactsiv_mul_overflow'
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; CHECK-NEXT: Src: store i8 0, ptr %src.ptr, align 1 --> Dst: store i8 0, ptr %src.ptr, align 1
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; CHECK-NEXT: da analyze - none!
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; CHECK-NEXT: Src: store i8 0, ptr %src.ptr, align 1 --> Dst: store i8 1, ptr %dst.ptr, align 1
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; CHECK-NEXT: da analyze - output [*|<]!
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; CHECK-NEXT: Src: store i8 1, ptr %dst.ptr, align 1 --> Dst: store i8 1, ptr %dst.ptr, 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
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loop:
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%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
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%src.idx = mul nsw i32 %i, 5
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%src.ptr = getelementptr inbounds i8, ptr %A, i32 %src.idx
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store i8 0, ptr %src.ptr
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%dst.idx.1 = mul nsw i32 %i, 8
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%dst.idx = add nsw i32 %dst.idx.1, 750000000
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%dst.ptr = getelementptr inbounds i8, ptr %A, i32 %dst.idx
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store i8 1, ptr %dst.ptr
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%i.next = add nsw i32 %i, 1
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%ec = icmp eq i32 %i.next, 160000000
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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-ALL: {{.*}}
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; CHECK-EXACT-SIV: {{.*}}
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