Improved asm inline for hi,lo results

Added hi,lo registers to be used,def implicitly. This provides better handle of
instructions which use hi/lo.
Fixes a small BranchAnalysis bug


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54274 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/Target/Mips/MipsAsmPrinter.cpp b/lib/Target/Mips/MipsAsmPrinter.cpp
index 9e334c15df..d53fd06d08 100644
--- a/lib/Target/Mips/MipsAsmPrinter.cpp
+++ b/lib/Target/Mips/MipsAsmPrinter.cpp
@@ -59,6 +59,8 @@ namespace {
     }
 
     virtual std::string getSectionForFunction(const Function &F) const;
+    bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, 
+                         unsigned AsmVariant, const char *ExtraCode);
     void printOperand(const MachineInstr *MI, int opNum);
     void printMemOperand(const MachineInstr *MI, int opNum, 
                          const char *Modifier = 0);
@@ -337,6 +339,19 @@ runOnMachineFunction(MachineFunction &MF)
   return false;
 }
 
+// Print out an operand for an inline asm expression.
+bool MipsAsmPrinter::
+PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, 
+                unsigned AsmVariant, const char *ExtraCode) 
+{
+  // Does this asm operand have a single letter operand modifier?
+  if (ExtraCode && ExtraCode[0]) 
+    return true; // Unknown modifier.
+
+  printOperand(MI, OpNo);
+  return false;
+}
+
 void MipsAsmPrinter::
 printOperand(const MachineInstr *MI, int opNum) 
 {