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71f8b441ed
By storing possible test vectors instead of combinations of conditions, the restriction is dramatically relaxed. This introduces two options to `cc1`: * `-fmcdc-max-conditions=32767` * `-fmcdc-max-test-vectors=2147483646` This change makes coverage mapping, profraw, and profdata incompatible with Clang-18. - Bitmap semantics changed. It is incompatible with previous format. - `BitmapIdx` in `Decision` points to the end of the bitmap. - Bitmap is packed per function. - `llvm-cov` can understand `profdata` generated by `llvm-profdata-18`. RFC: https://discourse.llvm.org/t/rfc-coverage-new-algorithm-and-file-format-for-mc-dc/76798 -- Change(s) since llvmorg-19-init-14288-g7ead2d8c7e91 - Update compiler-rt/test/profile/ContinuousSyncMode/image-with-mcdc.c
101 lines
6.4 KiB
C++
101 lines
6.4 KiB
C++
// Test that branch regions are not generated for constant-folded conditions.
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// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name branch-constfolded.cpp %s | FileCheck %s
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// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 -fcoverage-mcdc -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name branch-constfolded.cpp %s | FileCheck %s -check-prefix=MCDC
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// CHECK-LABEL: _Z6fand_0b:
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bool fand_0(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:20 = M:3, C:2
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return false && a; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:15 = 0, 0
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} // CHECK: Branch,File 0, [[@LINE-1]]:19 -> [[@LINE-1]]:20 = #2, (#1 - #2)
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// CHECK-LABEL: _Z6fand_1b:
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bool fand_1(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:19 = M:3, C:2
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return a && true; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = #1, (#0 - #1)
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} // CHECK: Branch,File 0, [[@LINE-1]]:15 -> [[@LINE-1]]:19 = 0, 0
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// CHECK-LABEL: _Z6fand_2bb:
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bool fand_2(bool a, bool b) {// MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:25 = M:4, C:3
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return false && a && b; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:15 = 0, 0
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} // CHECK: Branch,File 0, [[@LINE-1]]:19 -> [[@LINE-1]]:20 = #4, (#3 - #4)
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// CHECK: Branch,File 0, [[@LINE-2]]:24 -> [[@LINE-2]]:25 = #2, (#1 - #2)
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// CHECK-LABEL: _Z6fand_3bb:
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bool fand_3(bool a, bool b) {// MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:24 = M:4, C:3
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return a && true && b; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = #3, (#0 - #3)
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} // CHECK: Branch,File 0, [[@LINE-1]]:15 -> [[@LINE-1]]:19 = 0, 0
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// CHECK: Branch,File 0, [[@LINE-2]]:23 -> [[@LINE-2]]:24 = #2, (#1 - #2)
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// CHECK-LABEL: _Z6fand_4bb:
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bool fand_4(bool a, bool b) {// MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:25 = M:4, C:3
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return a && b && false; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = #3, (#0 - #3)
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} // CHECK: Branch,File 0, [[@LINE-1]]:15 -> [[@LINE-1]]:16 = #4, (#3 - #4)
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// CHECK: Branch,File 0, [[@LINE-2]]:20 -> [[@LINE-2]]:25 = 0, 0
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// CHECK-LABEL: _Z6fand_5b:
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bool fand_5(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:23 = M:3, C:2
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return false && true; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:15 = 0, 0
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} // CHECK: Branch,File 0, [[@LINE-1]]:19 -> [[@LINE-1]]:23 = 0, 0
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// CHECK-LABEL: _Z6fand_6b:
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bool fand_6(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:19 = M:3, C:2
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return true && a; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:14 = 0, 0
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} // CHECK: Branch,File 0, [[@LINE-1]]:18 -> [[@LINE-1]]:19 = #2, (#1 - #2)
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// CHECK-LABEL: _Z6fand_7b:
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bool fand_7(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:20 = M:3, C:2
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return a && false; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = #1, (#0 - #1)
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} // CHECK: Branch,File 0, [[@LINE-1]]:15 -> [[@LINE-1]]:20 = 0, 0
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// CHECK-LABEL: _Z5for_0b:
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bool for_0(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:19 = M:3, C:2
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return true || a; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:14 = 0, 0
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} // CHECK: Branch,File 0, [[@LINE-1]]:18 -> [[@LINE-1]]:19 = (#1 - #2), #2
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// CHECK-LABEL: _Z5for_1b:
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bool for_1(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:20 = M:3, C:2
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return a || false; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = (#0 - #1), #1
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} // CHECK: Branch,File 0, [[@LINE-1]]:15 -> [[@LINE-1]]:20 = 0, 0
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// CHECK-LABEL: _Z5for_2bb:
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bool for_2(bool a, bool b) {// MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:24 = M:4, C:3
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return true || a || b; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:14 = 0, 0
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} // CHECK: Branch,File 0, [[@LINE-1]]:18 -> [[@LINE-1]]:19 = (#3 - #4), #4
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// CHECK: Branch,File 0, [[@LINE-2]]:23 -> [[@LINE-2]]:24 = (#1 - #2), #2
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// CHECK-LABEL: _Z5for_3bb:
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bool for_3(bool a, bool b) {// MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:25 = M:4, C:3
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return a || false || b; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = (#0 - #3), #3
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} // CHECK: Branch,File 0, [[@LINE-1]]:15 -> [[@LINE-1]]:20 = 0, 0
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// CHECK: Branch,File 0, [[@LINE-2]]:24 -> [[@LINE-2]]:25 = (#1 - #2), #2
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// CHECK-LABEL: _Z5for_4bb:
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bool for_4(bool a, bool b) {// MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:24 = M:4, C:3
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return a || b || true; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = (#0 - #3), #3
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} // CHECK: Branch,File 0, [[@LINE-1]]:15 -> [[@LINE-1]]:16 = (#3 - #4), #4
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// CHECK: Branch,File 0, [[@LINE-2]]:20 -> [[@LINE-2]]:24 = 0, 0
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// CHECK-LABEL: _Z5for_5b:
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bool for_5(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:23 = M:3, C:2
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return true || false; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:14 = 0, 0
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} // CHECK: Branch,File 0, [[@LINE-1]]:18 -> [[@LINE-1]]:23 = 0, 0
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// CHECK-LABEL: _Z5for_6b:
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bool for_6(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:20 = M:3, C:2
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return false || a; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:15 = 0, 0
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} // CHECK: Branch,File 0, [[@LINE-1]]:19 -> [[@LINE-1]]:20 = (#1 - #2), #2
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// CHECK-LABEL: _Z5for_7b:
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bool for_7(bool a) { // MCDC: Decision,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:19 = M:3, C:2
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return a || true; // CHECK: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = (#0 - #1), #1
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} // CHECK: Branch,File 0, [[@LINE-1]]:15 -> [[@LINE-1]]:19 = 0, 0
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// CHECK-LABEL: _Z5for_8b:
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bool for_8(bool a) { // MCDC: Decision,File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:20 = M:3, C:2
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// CHECK: Branch,File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:11 = 0, 0
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// CHECK: Branch,File 0, [[@LINE+1]]:15 -> [[@LINE+1]]:20 = 0, 0
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if (true && false)
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return true;
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else
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return false;
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}
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