[CodeGen] Always use `printReg` to print registers in both MIR and debug

output

As part of the unification of the debug format and the MIR format,
always use `printReg` to print all kinds of registers.

Updated the tests using '_' instead of '%noreg' until we decide which
one we want to be the default one.

Differential Revision: https://reviews.llvm.org/D40421

llvm-svn: 319445

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/RegisterUsageInfo.cpp b/llvm/lib/CodeGen/RegisterUsageInfo.cpp
index fa74d418529..4e42deb406e 100644
--- a/llvm/lib/CodeGen/RegisterUsageInfo.cpp
+++ b/llvm/lib/CodeGen/RegisterUsageInfo.cpp
@@ -97,7 +97,7 @@ void PhysicalRegisterUsageInfo::print(raw_ostream &OS, const Module *M) const {
 
     for (unsigned PReg = 1, PRegE = TRI->getNumRegs(); PReg < PRegE; ++PReg) {
       if (MachineOperand::clobbersPhysReg(&(FPRMPair->second[0]), PReg))
-        OS << TRI->getName(PReg) << " ";
+        OS << printReg(PReg, TRI) << " ";
     }
     OS << "\n";
   }