80cd518b80
After the format change from D69471, there can be more than one section in an object that contains coverage function records. Look up each of these sections and concatenate all the records together. This re-enables the instrprof-merging.cpp test, which previously was failing on OSes which use comdats. Thanks to Jeremy Morse, who very kindly provided object files from the bot I broke to help me debug.
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
// 1) Compile shared code into different object files and into an executable.
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// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %s -c -o %t.v1.o \
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// RUN: -D_VERSION_1
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// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %s -c -o %t.v2.o \
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// RUN: -D_VERSION_2
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// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %t.v1.o %t.v2.o \
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// RUN: -o %t.exe
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// 2) Collect profile data.
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// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t.exe
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// RUN: llvm-profdata merge %t.profraw -o %t.profdata
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// 3) Generate coverage reports from the different object files and the exe.
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// RUN: llvm-cov show %t.v1.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V1-ONLY
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// RUN: llvm-cov show %t.v2.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V2,V2-ONLY
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// RUN: llvm-cov show %t.v1.o -object %t.v2.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V2
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// RUN: llvm-cov show %t.exe -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V2
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// 4) Verify that coverage reporting on the aggregate coverage mapping shows
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// hits for all code. (We used to arbitrarily pick a mapping from one binary
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// and prefer it over others.) When only limited coverage information is
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// available (just from one binary), don't try to guess any region counts.
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struct A {
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A() {} // V1: [[@LINE]]{{ *}}|{{ *}}1
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// V1-ONLY: [[@LINE+1]]{{ *}}|{{ *}}|
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A(int) {} // V2-ONLY: [[@LINE-2]]{{ *}}|{{ *}}|
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// V2: [[@LINE-1]]{{ *}}|{{ *}}1
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};
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#ifdef _VERSION_1
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void foo();
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void bar() {
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A x; // V1: [[@LINE]]{{ *}}|{{ *}}1
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}
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int main() {
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foo(); // V1: [[@LINE]]{{ *}}|{{ *}}1
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bar();
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return 0;
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}
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#endif // _VERSION_1
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#ifdef _VERSION_2
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void foo() {
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A x{0}; // V2: [[@LINE]]{{ *}}|{{ *}}1
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}
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#endif // _VERSION_2
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