Embed bitcode in object file (clang cc1 part)
Summary:
Teach clang to embed bitcode inside bitcode. When -fembed-bitcode cc1
option is used, clang will embed both the input bitcode and cc1
commandline into the bitcode in special sections before compiling to
the object file. Using -fembed-bitcode-marker will only introduce a
marker in both sections.
Depends on D17390
Reviewers: rsmith
Subscribers: yaron.keren, vsk, cfe-commits
Differential Revision: http://reviews.llvm.org/D17392
llvm-svn: 269202
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 111614f..1f2c64e 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -507,14 +507,23 @@
// Ignore -fembed-bitcode options with LTO
// since the output will be bitcode anyway.
if (!Args.hasFlag(options::OPT_flto, options::OPT_fno_lto, false)) {
- if (Args.hasArg(options::OPT_fembed_bitcode))
- BitcodeEmbed = EmbedBitcode;
- else if (Args.hasArg(options::OPT_fembed_bitcode_marker))
- BitcodeEmbed = EmbedMarker;
+ if (Arg *A = Args.getLastArg(options::OPT_fembed_bitcode_EQ)) {
+ StringRef Name = A->getValue();
+ unsigned Model = llvm::StringSwitch<unsigned>(Name)
+ .Case("off", EmbedNone)
+ .Case("all", EmbedBitcode)
+ .Case("bitcode", EmbedBitcode)
+ .Case("marker", EmbedMarker)
+ .Default(~0U);
+ if (Model == ~0U) {
+ Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
+ << Name;
+ } else
+ BitcodeEmbed = static_cast<BitcodeEmbedMode>(Model);
+ }
} else {
// claim the bitcode option under LTO so no warning is issued.
- Args.ClaimAllArgs(options::OPT_fembed_bitcode);
- Args.ClaimAllArgs(options::OPT_fembed_bitcode_marker);
+ Args.ClaimAllArgs(options::OPT_fembed_bitcode_EQ);
}
setLTOMode(Args);