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InstrProf: Fix shared object profiling Change the API of the instrumented profiling library to work with shared objects. - Most things are now declared hidden, so that each executable gets its own copy. - Initialization hooks up a linked list of writers. - The raw format with shared objects that are profiled consists of a concatenated series of profiles. llvm-profdata knows how to deal with that since r208938. <rdar://problem/16918688> llvm-svn: 208940
2014-05-16 09:30:24 +08:00
RUN: mkdir -p %t.d
RUN: %clang_profgen -o %t.d/a.shared -fPIC -shared %S/Inputs/instrprof-dynamic-a.cpp
RUN: %clang_profgen -o %t.d/b.shared -fPIC -shared %S/Inputs/instrprof-dynamic-b.cpp
RUN: %clang_profgen -o %t-shared -fPIC -rpath %t.d %t.d/a.shared %t.d/b.shared %S/Inputs/instrprof-dynamic-main.cpp
RUN: %clang_profgen -o %t-static %S/Inputs/instrprof-dynamic-a.cpp %S/Inputs/instrprof-dynamic-b.cpp %S/Inputs/instrprof-dynamic-main.cpp
RUN: env LLVM_PROFILE_FILE=%t-static.profraw %run %t-static
RUN: env LLVM_PROFILE_FILE=%t-shared.profraw %run %t-shared
RUN: llvm-profdata merge -o %t-static.profdata %t-static.profraw
RUN: llvm-profdata merge -o %t-shared.profdata %t-shared.profraw
RUN: %clang_profuse=%t-static.profdata -o %t-a.static.ll -S -emit-llvm %S/Inputs/instrprof-dynamic-a.cpp
RUN: %clang_profuse=%t-shared.profdata -o %t-a.shared.ll -S -emit-llvm %S/Inputs/instrprof-dynamic-a.cpp
RUN: diff %t-a.static.ll %t-a.shared.ll
RUN: %clang_profuse=%t-static.profdata -o %t-b.static.ll -S -emit-llvm %S/Inputs/instrprof-dynamic-b.cpp
RUN: %clang_profuse=%t-shared.profdata -o %t-b.shared.ll -S -emit-llvm %S/Inputs/instrprof-dynamic-b.cpp
RUN: diff %t-b.static.ll %t-b.shared.ll
RUN: %clang_profuse=%t-static.profdata -o %t-main.static.ll -S -emit-llvm %S/Inputs/instrprof-dynamic-main.cpp
RUN: %clang_profuse=%t-shared.profdata -o %t-main.shared.ll -S -emit-llvm %S/Inputs/instrprof-dynamic-main.cpp
RUN: diff %t-main.static.ll %t-main.shared.ll