> > Since HRangeAnalysisPhase is a proper CompilationPhase now, it should
use
> > CompilationPhase::ShouldProduceTraceOutput() to determine whether to
produce
> > trace output, and FLAG_trace_range should go away.
>
> Of course, but this way we would be unable to trace only the range
analysis
> however.
No I don't think so - see the source for ShouldProduceTraceOutput:
https://code.google.com/p/chromium/codesearch#chromium/src/v8/src/compiler.cc&q=CompilationPhase&sq=package:chromium&type=cs&l=1247
The combination '--trace-hydrogen --trace-phase="H_Range analysis"' will
trace
only range analysis
It uses StrChr to see if the first character of the phase name (H in case
of a
hydrogen phase) appears in FLAG_trace_phase.
https://codereview.chromium.org/18491002/
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