| 1 | // Check that instrprof does not introduce references to discarded sections when |
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| 2 | // using comdats. |
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| 3 | // |
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| 4 | // Occasionally, it is possible that the same function can be compiled in |
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| 5 | // different TUs with slightly different linkages, e.g., due to different |
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| 6 | // compiler options. However, if these are comdat functions, a single |
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| 7 | // implementation will be chosen at link time. we want to ensure that the |
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| 8 | // profiling data does not contain a reference to the discarded section. |
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| 9 | |
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| 10 | // UNSUPPORTED: target={{.*windows.*}} |
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| 11 | |
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| 12 | // RUN: mkdir -p %t.d |
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| 13 | // RUN: %clangxx_pgogen -O2 -fPIC -ffunction-sections -fdata-sections -c %s -o %t.d/a1.o -DOBJECT_1 -mllvm -disable-preinline |
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| 14 | // RUN: %clangxx_pgogen -O2 -fPIC -ffunction-sections -fdata-sections -c %s -o %t.d/a2.o |
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| 15 | // RUN: %clangxx_pgogen -fPIC -shared -o %t.d/liba.so %t.d/a1.o %t.d/a2.o 2>&1 | FileCheck %s --allow-empty |
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| 16 | |
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| 17 | // Ensure that we don't get an error when linking |
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| 18 | // CHECK-NOT: relocation refers to a discarded section: .text._ZN1CIiE1fEi |
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| 19 | |
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| 20 | template <typename T> struct C { |
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| 21 | void f(T x); |
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| 22 | int g(T x) { |
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| 23 | f(x); |
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| 24 | return v; |
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| 25 | } |
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| 26 | int v; |
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| 27 | }; |
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| 28 | |
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| 29 | template <typename T> |
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| 30 | #ifdef OBJECT_1 |
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| 31 | __attribute__((weak)) |
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| 32 | #else |
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| 33 | __attribute__((noinline)) |
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| 34 | #endif |
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| 35 | void C<T>::f(T x) { |
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| 36 | v += x; |
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| 37 | } |
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| 38 | |
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| 39 | #ifdef OBJECT_1 |
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| 40 | int foo() { |
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| 41 | C<int> c; |
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| 42 | c.f(1); |
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| 43 | return c.g(2); |
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| 44 | } |
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| 45 | #else |
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| 46 | int bar() { |
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| 47 | C<int> c; |
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| 48 | c.f(x: 3); |
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| 49 | return c.g(x: 4); |
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| 50 | } |
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| 51 | #endif |
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| 52 | |
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