llvm-mc: Support -filetype=null, for timing purposes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99349 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index 3c23990..0e183b0 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -56,6 +56,7 @@
cl::desc("Syntax variant to use for output printing"));
enum OutputFileType {
+ OFT_Null,
OFT_AssemblyFile,
OFT_ObjectFile
};
@@ -65,6 +66,8 @@
cl::values(
clEnumValN(OFT_AssemblyFile, "asm",
"Emit an assembly ('.s') file"),
+ clEnumValN(OFT_Null, "null",
+ "Don't emit anything (for timing purposes)"),
clEnumValN(OFT_ObjectFile, "obj",
"Emit a native object ('.o') file"),
clEnumValEnd));
@@ -289,6 +292,8 @@
CE.reset(TheTarget->createCodeEmitter(*TM, Ctx));
Str.reset(createAsmStreamer(Ctx, *Out,TM->getTargetData()->isLittleEndian(),
/*asmverbose*/true, IP, CE.get(), ShowInst));
+ } else if (FileType == OFT_Null) {
+ Str.reset(createNullStreamer(Ctx));
} else {
assert(FileType == OFT_ObjectFile && "Invalid file type!");
CE.reset(TheTarget->createCodeEmitter(*TM, Ctx));