[llvm-commits] [llvm] r168522 - /llvm/trunk/tools/llvm-mc/llvm-mc.cpp

[Rafael Espindola]

Author: rafael
Date: Fri Nov 23 11:37:34 2012
New Revision: 168522

URL: http://llvm.org/viewvc/llvm-project?rev=168522&view=rev
Log:
Add a -disable-cfi option to llvm-mc. This is useful for debugging as
it will expand any .cfi_* directives in the input assembly.

Unfortunately this cannot replace elf-dump in tests as the asm streamer
cannot relax the line advance opcodes.

Modified:
    llvm/trunk/tools/llvm-mc/llvm-mc.cpp

Modified: llvm/trunk/tools/llvm-mc/llvm-mc.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-mc/llvm-mc.cpp?rev=168522&r1=168521&r2=168522&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-mc/llvm-mc.cpp (original)
+++ llvm/trunk/tools/llvm-mc/llvm-mc.cpp Fri Nov 23 11:37:34 2012
@@ -69,6 +69,9 @@
 RelaxAll("mc-relax-all", cl::desc("Relax all fixups"));
 
 static cl::opt<bool>
+DisableCFI("disable-cfi", cl::desc("Do not use .cfi_* directives"));
+
+static cl::opt<bool>
 NoExecStack("mc-no-exec-stack", cl::desc("File doesn't need an exec stack"));
 
 enum OutputFileType {
@@ -415,9 +418,10 @@
       CE = TheTarget->createMCCodeEmitter(*MCII, *MRI, *STI, Ctx);
       MAB = TheTarget->createMCAsmBackend(TripleName, MCPU);
     }
+    bool UseCFI = !DisableCFI;
     Str.reset(TheTarget->createAsmStreamer(Ctx, FOS, /*asmverbose*/true,
                                            /*useLoc*/ true,
-                                           /*useCFI*/ true,
+                                           UseCFI,
                                            /*useDwarfDirectory*/ true,
                                            IP, CE, MAB, ShowInst));