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Make -funroll-loops turn on loop unrolling in the optimizer instead

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of just ignoring it.

llvm-svn: 110525
This commit is contained in:
Eric Christopher
2010-08-07 23:08:14 +00:00
parent bbdce49c2a
commit f387dbde81
4 changed files with 11 additions and 4 deletions
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10
clang/lib/Frontend/CompilerInvocation.cpp
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@@ -148,9 +148,12 @@ static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
// SimplifyLibCalls is only derived.
// TimePasses is only derived.
// UnitAtATime is unused.
// UnrollLoops is only derived.
// Inlining is only derived.
// UnrollLoops is derived, but also accepts an option, no
// harm in pushing it back here.
if (Opts.UnrollLoops)
Res.push_back("-funroll-loops");
if (Opts.DataSections)
Res.push_back("-fdata-sections");
if (Opts.FunctionSections)
@@ -828,7 +831,8 @@ static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
Opts.OptimizeSize = Args.hasArg(OPT_Os);
Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
Args.hasArg(OPT_ffreestanding));
Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
(Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);