[NVPTX] Fix bug in stack code generation causes by MC conversion

We do use a very small set of physical registers, so account for
them in the virtual register encoding between MachineInstr and MC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187799 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 5 deletions

diff --git a/lib/Target/NVPTX/InstPrinter/NVPTXInstPrinter.cpp b/lib/Target/NVPTX/InstPrinter/NVPTXInstPrinter.cpp
index 1cb8a9a..c7b8aa4 100644
--- a/lib/Target/NVPTX/InstPrinter/NVPTXInstPrinter.cpp
+++ b/lib/Target/NVPTX/InstPrinter/NVPTXInstPrinter.cpp
@@ -41,21 +41,26 @@ void NVPTXInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
   switch (RCId) {
   default: report_fatal_error("Bad virtual register encoding");
   case 0:
+    // This is actually a physical register, so defer to the autogenerated
+    // register printer
+    OS << getRegisterName(RegNo);
+    return;
+  case 1:
     OS << "%p";
     break;
-  case 1:
+  case 2:
     OS << "%rs";
     break;
-  case 2:
+  case 3:
     OS << "%r";
     break;
-  case 3:
+  case 4:
     OS << "%rl";
     break;
-  case 4:
+  case 5:
     OS << "%f";
     break;
-  case 5:
+  case 6:
     OS << "%fl";
     break;
   }