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
28 lines
2.6 KiB
C++
28 lines
2.6 KiB
C++
// RUN: %clang_cc1 -mllvm -emptyline-comment-coverage=false -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name logical.cpp %s | FileCheck %s
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// RUN: %clang_cc1 -mllvm -emptyline-comment-coverage=false -fcoverage-mcdc -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name logical.cpp %s | FileCheck %s -check-prefix=MCDC
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int main() { // CHECK: File 0, [[@LINE]]:12 -> [[@LINE+23]]:2 = #0
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bool bt = true;
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bool bf = false; // MCDC: Decision,File 0, [[@LINE+1]]:12 -> [[@LINE+1]]:20 = M:3, C:2
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bool a = bt && bf; // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE]]:14 = #0
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// CHECK-NEXT: Branch,File 0, [[@LINE-1]]:12 -> [[@LINE-1]]:14 = #1, (#0 - #1)
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// CHECK-NEXT: File 0, [[@LINE-2]]:18 -> [[@LINE-2]]:20 = #1
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// CHECK-NEXT: Branch,File 0, [[@LINE-3]]:18 -> [[@LINE-3]]:20 = #2, (#1 - #2)
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// MCDC: Decision,File 0, [[@LINE+1]]:7 -> [[@LINE+2]]:9 = M:6, C:2
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a = bt && // CHECK-NEXT: File 0, [[@LINE]]:7 -> [[@LINE]]:9 = #0
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bf; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:7 -> [[@LINE-1]]:9 = #3, (#0 - #3)
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// CHECK-NEXT: File 0, [[@LINE-1]]:7 -> [[@LINE-1]]:9 = #3
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// CHECK-NEXT: Branch,File 0, [[@LINE-2]]:7 -> [[@LINE-2]]:9 = #4, (#3 - #4)
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// MCDC: Decision,File 0, [[@LINE+1]]:7 -> [[@LINE+1]]:15 = M:9, C:2
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a = bf || bt; // CHECK-NEXT: File 0, [[@LINE]]:7 -> [[@LINE]]:9 = #0
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// CHECK-NEXT: Branch,File 0, [[@LINE-1]]:7 -> [[@LINE-1]]:9 = (#0 - #5), #5
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// CHECK-NEXT: File 0, [[@LINE-2]]:13 -> [[@LINE-2]]:15 = #5
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// CHECK-NEXT: Branch,File 0, [[@LINE-3]]:13 -> [[@LINE-3]]:15 = (#5 - #6), #6
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// MCDC: Decision,File 0, [[@LINE+1]]:7 -> [[@LINE+2]]:9 = M:12, C:2
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a = bf || // CHECK-NEXT: File 0, [[@LINE]]:7 -> [[@LINE]]:9 = #0
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bt; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:7 -> [[@LINE-1]]:9 = (#0 - #7), #7
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// CHECK-NEXT: File 0, [[@LINE-1]]:7 -> [[@LINE-1]]:9 = #7
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// CHECK-NEXT: Branch,File 0, [[@LINE-2]]:7 -> [[@LINE-2]]:9 = (#7 - #8), #8
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return 0;
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}
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