Introduce register dump helper

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222379 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Target/TargetRegisterInfo.h b/include/llvm/Target/TargetRegisterInfo.h
index 9c171379f306f46221908906110d392fb940e595..16b72a98db085ecc57594d594b1fd06be751ec8c 100644 (file)
--- a/include/llvm/Target/TargetRegisterInfo.h
+++ b/include/llvm/Target/TargetRegisterInfo.h
@@ -502,6 +502,10 @@ public:
     return composeSubRegIndicesImpl(a, b);
   }
 
+  /// Debugging helper: dump register in human readable form to dbgs() stream.
+  static void dumpReg(unsigned Reg, unsigned SubRegIndex = 0,
+                      const TargetRegisterInfo* TRI = nullptr);
+
 protected:
   /// Overridden by TableGen in targets that have sub-registers.
   virtual unsigned composeSubRegIndicesImpl(unsigned, unsigned) const {

diff --git a/lib/CodeGen/TargetRegisterInfo.cpp b/lib/CodeGen/TargetRegisterInfo.cpp
index a99f94c248d7539f0bb9afd66851e75686fb8111..61a66b6239282a0df6af8aa9bb7b4d3064b3bbae 100644 (file)
--- a/lib/CodeGen/TargetRegisterInfo.cpp
+++ b/lib/CodeGen/TargetRegisterInfo.cpp
@@ -16,6 +16,7 @@
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/VirtRegMap.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 
 using namespace llvm;
@@ -293,3 +294,11 @@ TargetRegisterInfo::getRegAllocationHints(unsigned VirtReg,
   // All clear, tell the register allocator to prefer this register.
   Hints.push_back(Phys);
 }
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+void
+TargetRegisterInfo::dumpReg(unsigned Reg, unsigned SubRegIndex,
+                            const TargetRegisterInfo *TRI) {
+  dbgs() << PrintReg(Reg, TRI, SubRegIndex) << "\n";
+}
+#endif