Reland: [Timers] Use the pass argument name for JSON keys in time-passes
When using clang --save-stats -mllvm -time-passes, both timers and stats
end up in the same json file.
We could end up with things like:
{
"asm-printer.EmittedInsts": 1,
"time.pass.Virtual Register Map.wall": 2.
9015541076660156e-04,
"time.pass.Virtual Register Map.user": 2.
0500000000000379e-04,
"time.pass.Virtual Register Map.sys": 8.
5000000000001741e-05,
}
This patch makes use of the pass argument name (if available) in the
JSON key to end up with things like:
{
"asm-printer.EmittedInsts": 1,
"time.pass.virtregmap.wall": 2.
9015541076660156e-04,
"time.pass.virtregmap.user": 2.
0500000000000379e-04,
"time.pass.virtregmap.sys": 8.
5000000000001741e-05,
}
This also helps avoiding to write another JSON printer to handle all the
cases that we could have in our pass names.
Fixed test instead of adding a new one originally from r334649.
Differential Revision: https://reviews.llvm.org/D48109
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334657
91177308-0d34-0410-b5e6-
96231b3b80d8