Ensure all local variables exist in the ProgramUsage map.
Previously, a declared then never-read variable was not present at all.
This also adds an `fDeclared` field to VariableCounts, which tracks the
presence of a VarDeclaration for a variable. `fDeclared` allows us to
distinguish between the cases of a declared but completely inert
local variable, and a variable whose declaration has actually been
eliminated.
Change-Id: I1d7238a257997814e0d978d76b98005541b8a6bc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/383156
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2 files changed