derek.holloway
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107 lines
3.9 KiB
LLVM
107 lines
3.9 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=weak-zero-siv 2>&1 \
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; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-WEAK-ZERO-SRC-SIV
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;
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; for (i = INT64_MIN + 1; i != INT64_MAX; i++) {
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; if (i == 0)
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; A[i] = 0;
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; A[0] = 1;
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; }
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;
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; `A[i] = 0` will be executed (when i == 0), so there is a dependency between
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; the two stores.
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;
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define void @weak_zero_src_siv_large_btc(ptr %A) {
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; CHECK-ALL-LABEL: 'weak_zero_src_siv_large_btc'
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; CHECK-ALL-NEXT: Src: store i8 0, ptr %gep, align 1 --> Dst: store i8 0, ptr %gep, 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, align 1 --> Dst: store i8 1, ptr %A, align 1
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; CHECK-ALL-NEXT: da analyze - output [*|<]!
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; CHECK-ALL-NEXT: Src: store i8 1, ptr %A, align 1 --> Dst: store i8 1, ptr %A, align 1
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; CHECK-ALL-NEXT: da analyze - output [S]!
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;
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; CHECK-WEAK-ZERO-SRC-SIV-LABEL: 'weak_zero_src_siv_large_btc'
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: Src: store i8 0, ptr %gep, align 1 --> Dst: store i8 0, ptr %gep, align 1
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: da analyze - output [*]!
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: Src: store i8 0, ptr %gep, align 1 --> Dst: store i8 1, ptr %A, align 1
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: da analyze - output [*|<]!
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: Src: store i8 1, ptr %A, align 1 --> Dst: store i8 1, ptr %A, align 1
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: da analyze - output [S]!
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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 [ -9223372036854775807, %entry ], [ %i.inc, %loop.latch ]
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%cond = icmp eq i64 %i, 0
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br i1 %cond, label %if.then, label %loop.latch
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if.then:
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%gep = getelementptr i8, ptr %A, i64 %i
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store i8 0, ptr %gep
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br label %loop.latch
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loop.latch:
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store i8 1, ptr %A
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%i.inc = add i64 %i, 1
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%ec = icmp eq i64 %i.inc, 9223372036854775807
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br i1 %ec, label %exit, label %loop.header
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exit:
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ret void
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}
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;
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; for (i = INT64_MIN + 1; i != INT64_MAX; i++) {
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; A[0] = 1;
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; if (i == 0)
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; A[i] = 0;
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; }
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;
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; `A[i] = 0` will be executed (when i == 0), so there is a dependency between
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; the two stores.
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;
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define void @weak_zero_dst_siv_large_btc(ptr %A) {
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; CHECK-ALL-LABEL: 'weak_zero_dst_siv_large_btc'
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; CHECK-ALL-NEXT: Src: store i8 1, ptr %A, align 1 --> Dst: store i8 1, ptr %A, align 1
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; CHECK-ALL-NEXT: da analyze - output [S]!
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; CHECK-ALL-NEXT: Src: store i8 1, ptr %A, align 1 --> Dst: store i8 0, ptr %gep, 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, align 1 --> Dst: store i8 0, ptr %gep, align 1
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; CHECK-ALL-NEXT: da analyze - none!
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;
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; CHECK-WEAK-ZERO-SRC-SIV-LABEL: 'weak_zero_dst_siv_large_btc'
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: Src: store i8 1, ptr %A, align 1 --> Dst: store i8 1, ptr %A, align 1
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: da analyze - output [S]!
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: Src: store i8 1, ptr %A, align 1 --> Dst: store i8 0, ptr %gep, align 1
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: da analyze - output [*|<]!
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: Src: store i8 0, ptr %gep, align 1 --> Dst: store i8 0, ptr %gep, align 1
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; CHECK-WEAK-ZERO-SRC-SIV-NEXT: da analyze - output [*]!
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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 [ -9223372036854775807, %entry ], [ %i.inc, %loop.latch ]
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store i8 1, ptr %A
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%cond = icmp eq i64 %i, 0
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br i1 %cond, label %if.then, label %loop.latch
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if.then:
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%gep = getelementptr i8, ptr %A, i64 %i
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store i8 0, ptr %gep
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br label %loop.latch
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loop.latch:
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%i.inc = add i64 %i, 1
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%ec = icmp eq i64 %i.inc, 9223372036854775807
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br i1 %ec, label %exit, 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: {{.*}}
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