http://llvm.org/bugs/show_bug.cgi?id=7439
Summary: avoid unecessary execing in a case of clang -cc1 and
clang -cc1as
Product: clang
Version: unspecified
Platform: PC
OS/Version: FreeBSD
Status: NEW
Severity: normal
Priority: P
Component: Driver
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
the attached patch introduces new class "FunctionC" and embeds it into class
Job and converts cc1_main.cpp and cc1as_main.cpp to be instances of this. it
uses this class to avoid unecessary exec() in a case of calling "clang -cc1"
and "clang -cc1as"
this brings a little performance speedup and also avoids a possible problem we
encounter in FreeBSD where /foo/bar/lala/clang called /usr/bin/clang -cc1
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