derek.holloway
7502bf64a4
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46 lines
1.7 KiB
C++
46 lines
1.7 KiB
C++
// RUN: %clang_analyze_cc1 %s \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-checker=debug.ExprInspection \
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// RUN: 2>&1 | FileCheck %s
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// In this test we check whether the solver's symbol simplification mechanism
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// is capable of reaching a fixpoint. This should be done after TWO iterations.
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void clang_analyzer_printState();
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void test(int a, int b, int c, int d) {
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if (a + b + c != d)
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return;
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if (c + b != 0)
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return;
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clang_analyzer_printState();
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// CHECK: "constraints": [
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// CHECK-NEXT: { "symbol": "(((reg_$0<int a>) + (reg_$2<int b>)) + (reg_$5<int c>)) != (reg_$8<int d>)", "range": "{ [0, 0] }" },
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// CHECK-NEXT: { "symbol": "(reg_$5<int c>) + (reg_$2<int b>)", "range": "{ [0, 0] }" }
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// CHECK-NEXT: ],
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// CHECK-NEXT: "equivalence_classes": [
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// CHECK-NEXT: [ "((reg_$0<int a>) + (reg_$2<int b>)) + (reg_$5<int c>)", "reg_$8<int d>" ]
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// CHECK-NEXT: ],
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// CHECK-NEXT: "disequality_info": null,
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// Simplification starts here.
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if (b != 0)
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return;
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clang_analyzer_printState();
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// CHECK: "constraints": [
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// CHECK-NEXT: { "symbol": "(reg_$0<int a>) != (reg_$8<int d>)", "range": "{ [0, 0] }" },
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// CHECK-NEXT: { "symbol": "reg_$2<int b>", "range": "{ [0, 0] }" },
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// CHECK-NEXT: { "symbol": "reg_$5<int c>", "range": "{ [0, 0] }" }
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// CHECK-NEXT: ],
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// CHECK-NEXT: "equivalence_classes": [
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// CHECK-NEXT: [ "(reg_$0<int a>) != (reg_$8<int d>)" ],
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// CHECK-NEXT: [ "reg_$0<int a>", "reg_$8<int d>" ],
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// CHECK-NEXT: [ "reg_$5<int c>" ]
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// CHECK-NEXT: ],
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// CHECK-NEXT: "disequality_info": null,
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// Keep the symbols and the constraints! alive.
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(void)(a * b * c * d);
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return;
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}
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