From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Fri, 23 Nov 2012 17:37:34 +0000 (+0000)
Subject: Add a -disable-cfi option to llvm-mc. This is useful for debugging as
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=985884caf94409373c31f694220720c40460036b;p=oota-llvm.git

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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168522 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index f7c3748f079..8329a41f252 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -68,6 +68,9 @@ OutputAsmVariant("output-asm-variant",
 static cl::opt<bool>
 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"));
 
@@ -415,9 +418,10 @@ int main(int argc, char **argv) {
       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));