9f2967bcfe
This is an enhancement to LLVM Source-Based Code Coverage in clang to track how many times individual branch-generating conditions are taken (evaluate to TRUE) and not taken (evaluate to FALSE). Individual conditions may comprise larger boolean expressions using boolean logical operators. This functionality is very similar to what is supported by GCOV except that it is very closely anchored to the ASTs. Differential Revision: https://reviews.llvm.org/D84467
48 lines
2.3 KiB
C++
48 lines
2.3 KiB
C++
// RUN: llvm-profdata merge %S/Inputs/branch-templates.proftext -o %t.profdata
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// RUN: llvm-cov show --show-expansions --show-branches=count %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S %s | FileCheck %s
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// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S %s | FileCheck %s -check-prefix=REPORT
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#include <stdio.h>
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template<typename T>
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void unused(T x) {
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return;
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}
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template<typename T>
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int func(T x) {
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if(x) // CHECK: | Branch ([[@LINE]]:6): [True: 0, False: 1]
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return 0; // CHECK: | Branch ([[@LINE-1]]:6): [True: 1, False: 0]
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else // CHECK: | Branch ([[@LINE-2]]:6): [True: 0, False: 1]
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return 1;
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int j = 1;
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}
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// CHECK-LABEL: _Z4funcIiEiT_:
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// CHECK: | | Branch ([[@LINE-8]]:6): [True: 0, False: 1]
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// CHECK-LABEL: _Z4funcIbEiT_:
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// CHECK: | | Branch ([[@LINE-10]]:6): [True: 1, False: 0]
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// CHECK-LABEL: _Z4funcIfEiT_:
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// CHECK: | | Branch ([[@LINE-12]]:6): [True: 0, False: 1]
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extern "C" { extern void __llvm_profile_write_file(void); }
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int main() {
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if (func<int>(0)) // CHECK: | Branch ([[@LINE]]:7): [True: 1, False: 0]
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printf("case1\n");
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if (func<bool>(true)) // CHECK: | Branch ([[@LINE]]:7): [True: 0, False: 1]
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printf("case2\n");
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if (func<float>(0.0)) // CHECK: | Branch ([[@LINE]]:7): [True: 1, False: 0]
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printf("case3\n");
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__llvm_profile_write_file();
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return 0;
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}
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// REPORT: Name Regions Miss Cover Lines Miss Cover Branches Miss Cover
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// REPORT-NEXT: ---
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// REPORT-NEXT: main 7 1 85.71% 10 1 90.00% 6 3 50.00%
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// REPORT-NEXT: _Z4funcIiEiT_ 5 2 60.00% 7 3 57.14% 2 1 50.00%
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// REPORT-NEXT: _Z4funcIbEiT_ 5 2 60.00% 7 4 42.86% 2 1 50.00%
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// REPORT-NEXT: _Z4funcIfEiT_ 5 2 60.00% 7 3 57.14% 2 1 50.00%
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// REPORT-NEXT: ---
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// REPORT-NEXT: TOTAL 22 7 68.18% 31 11 64.52% 12 6 50.00%
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