Add support to the ARM MC infrastructure to support mcr and friends. This requires supporting

the symbolic immediate names used for these instructions, fixing their pretty-printers, and
adding proper encoding information for them.

With this, we can properly pretty-print and encode assembly like:
	mrc p15, #0, r3, c13, c0, #3

Fixes <rdar://problem/8857858>.

llvm-svn: 123404

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp b/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
index 00160da4465..820c2e6ca6f 100644
--- a/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
+++ b/llvm/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
@@ -453,6 +453,16 @@ void ARMInstPrinter::printNoHashImmediate(const MCInst *MI, unsigned OpNum,
   O << MI->getOperand(OpNum).getImm();
 }
 
+void ARMInstPrinter::printPImmediate(const MCInst *MI, unsigned OpNum,
+                                          raw_ostream &O) {
+  O << "p" << MI->getOperand(OpNum).getImm();
+}
+
+void ARMInstPrinter::printCImmediate(const MCInst *MI, unsigned OpNum,
+                                          raw_ostream &O) {
+  O << "c" << MI->getOperand(OpNum).getImm();
+}
+
 void ARMInstPrinter::printPCLabel(const MCInst *MI, unsigned OpNum,
                                   raw_ostream &O) {
   llvm_unreachable("Unhandled PC-relative pseudo-instruction!");