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[EABI] Add Clang support for -meabi flag

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The -meabi flag to control LLVM EABI version.

Without '-meabi' or with '-meabi default' imply LLVM triple default.
With '-meabi gnu' sets EABI GNU.
With '-meabi 4' or '-meabi 5' set EABI version 4 and 5 respectively.

A similar patch was introduced in LLVM.

Patch by Vinicius Tinti.

llvm-svn: 252463
This commit is contained in:
Renato Golin
2015-11-09 12:40:41 +00:00
parent 6d435f12f0
commit 4854d80c39
7 changed files with 66 additions and 0 deletions
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15
clang/lib/Frontend/CompilerInvocation.cpp
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@@ -38,6 +38,7 @@
#include "llvm/Support/Host.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Target/TargetOptions.h"
#include <atomic>
#include <memory>
#include <sys/stat.h>
@@ -456,6 +457,20 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
Opts.DisableFree = Args.hasArg(OPT_disable_free);
Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
if (Arg *A = Args.getLastArg(OPT_meabi)) {
StringRef Value = A->getValue();
llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value)
.Case("default", llvm::EABI::Default)
.Case("4", llvm::EABI::EABI4)
.Case("5", llvm::EABI::EABI5)
.Case("gnu", llvm::EABI::GNU)
.Default(llvm::EABI::Unknown);
if (EABIVersion == llvm::EABI::Unknown)
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
<< Value;
else
Opts.EABIVersion = Value;
}
Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||