[PATCH] D16947: [PGO] assignment operator does not get profile data

[David Blaikie via llvm-commits]

On Tue, Feb 9, 2016 at 12:07 PM, David Li via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> This revision was automatically updated to reflect the committed changes.
> Closed by commit rL260270: [PGO] Fix issue: explicitly defaulted assignop
> is not profiled (authored by davidxl).
>

In general, if you send something out for review it's best to wait for
explicit sign-off before committing. Sorry I hadn't taken a moment to look
at the clang test you had added - again, got a bit lost in the noise of the
discussion.


>
> Changed prior to commit:
>   http://reviews.llvm.org/D16947?vs=47239&id=47351#toc
>
> Repository:
>   rL LLVM
>
> http://reviews.llvm.org/D16947
>
> Files:
>   cfe/trunk/lib/CodeGen/CGClass.cpp
>   cfe/trunk/test/Profile/def-assignop.cpp
>
> Index: cfe/trunk/test/Profile/def-assignop.cpp
> ===================================================================
> --- cfe/trunk/test/Profile/def-assignop.cpp
> +++ cfe/trunk/test/Profile/def-assignop.cpp
> @@ -0,0 +1,32 @@
> +// RUN: %clang_cc1 -x c++ -std=c++11 %s -triple x86_64-unknown-linux-gnu
> -main-file-name def-assignop.cpp -o - -emit-llvm -fprofile-instrument=clang
> | FileCheck --check-prefix=PGOGEN %s
> +// RUN: %clang_cc1 -x c++ -std=c++11 %s -triple x86_64-unknown-linux-gnu
> -main-file-name def-assignop.cpp -o - -emit-llvm -fprofile-instrument=clang
> -fcoverage-mapping | FileCheck --check-prefix=COVMAP %s
> +
> +struct B {
> +  B& operator=(const B &b);
> +  B& operator=(const B &&b);
> +};
> +
> +struct A {
> +  A &operator=(const A &) = default;
> +  // PGOGEN: define {{.*}}@_ZN1AaSERKS_(
> +  // PGOGEN: %pgocount = load {{.*}} @__profc__ZN1AaSERKS_
> +  // PGOGEN: {{.*}}add{{.*}}%pgocount, 1
> +  // PGOGEN: store{{.*}}@__profc__ZN1AaSERKS_
> +  A &operator=(A &&) = default;
> +  // PGOGEN: define {{.*}}@_ZN1AaSEOS_
> +  // PGOGEN: %pgocount = load {{.*}} @__profc__ZN1AaSEOS_
> +  // PGOGEN: {{.*}}add{{.*}}%pgocount, 1
> +  // PGOGEN: store{{.*}}@__profc__ZN1AaSEOS_
> +
> +  // Check that coverage mapping includes 6 function records including the
> +  // defaulted copy and move operators: A::operator=
> +  // COVMAP: @__llvm_coverage_mapping = {{.*}} { { i32, i32, i32, i32 },
> [3 x <{{.*}}>],
> +  B b;
> +};
> +
> +int main() {
> +  A a1, a2;
> +  a1 = a2;
> +  a2 = static_cast<A &&>(a1);
> +  return 0;
> +}
> Index: cfe/trunk/lib/CodeGen/CGClass.cpp
> ===================================================================
> --- cfe/trunk/lib/CodeGen/CGClass.cpp
> +++ cfe/trunk/lib/CodeGen/CGClass.cpp
> @@ -1608,6 +1608,7 @@
>
>    LexicalScope Scope(*this, RootCS->getSourceRange());
>
> +  incrementProfileCounter(RootCS);
>    AssignmentMemcpyizer AM(*this, AssignOp, Args);
>    for (auto *I : RootCS->body())
>      AM.emitAssignment(I);
>
>
>
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