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view gen/programs.cpp @ 1486:9ed0695cb93c
Teach `-dgc2stack` to promote GC allocations in simple loops to stack
allocations too. (A "simple" loop is one where the allocation isn't used in a
subsequent iteration)
This also means it's no longer necessary to run this pass multiple times.
Running it once after inlining should now catch all cases.
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Mon, 08 Jun 2009 12:35:55 +0200 |
parents | a376776e2301 |
children |
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#include "gen/programs.h" #include "llvm/Support/CommandLine.h" #include "llvm/System/Program.h" #include "root.h" // error(char*) #include "mars.h" // fatal() using namespace llvm; static cl::opt<std::string> gcc("gcc", cl::desc("GCC to use for assembling and linking"), cl::Hidden, cl::ZeroOrMore); sys::Path getGcc() { const char *cc = NULL; if (gcc.getNumOccurrences() > 0 && gcc.length() > 0) cc = gcc.c_str(); if (!cc) cc = getenv("CC"); if (!cc) cc = "gcc"; sys::Path path = sys::Program::FindProgramByName(cc); if (path.empty() && !cc) { if (cc) { path.set(cc); } else { error("failed to locate gcc"); fatal(); } } return path; }