[llvm-commits] [llvm] r123890 - /llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp

[Jakob Stoklund Olesen]

Author: stoklund
Date: Thu Jan 20 00:20:00 2011
New Revision: 123890

URL: http://llvm.org/viewvc/llvm-project?rev=123890&view=rev
Log:
Add hidden -verify-coalescing to run the machine code verifier before and after
register coalescing.

Modified:
    llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp

Modified: llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp?rev=123890&r1=123889&r2=123890&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp (original)
+++ llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp Thu Jan 20 00:20:00 2011
@@ -65,6 +65,11 @@
                cl::desc("Avoid coalescing physical register copies"),
                cl::init(false), cl::Hidden);
 
+static cl::opt<bool>
+VerifyCoalescing("verify-coalescing",
+         cl::desc("Verify machine instrs before and after register coalescing"),
+         cl::Hidden);
+
 INITIALIZE_AG_PASS_BEGIN(SimpleRegisterCoalescing, RegisterCoalescer,
                 "simple-register-coalescing", "Simple Register Coalescing", 
                 false, false, true)
@@ -1635,6 +1640,9 @@
                << "********** Function: "
                << ((Value*)mf_->getFunction())->getName() << '\n');
 
+  if (VerifyCoalescing)
+    mf_->verify(this, "Before register coalescing");
+
   for (TargetRegisterInfo::regclass_iterator I = tri_->regclass_begin(),
          E = tri_->regclass_end(); I != E; ++I)
     allocatableRCRegs_.insert(std::make_pair(*I,
@@ -1777,6 +1785,8 @@
 
   DEBUG(dump());
   DEBUG(ldv_->dump());
+  if (VerifyCoalescing)
+    mf_->verify(this, "After register coalescing");
   return true;
 }