[llvm-commits] [llvm] r159324 - in /llvm/trunk: lib/Target/Mips/MipsAsmPrinter.cpp test/CodeGen/Mips/inlineasm-operand-code.ll

[Jack Carter]

Author: jacksprat
Date: Wed Jun 27 20:33:40 2012
New Revision: 159324

URL: http://llvm.org/viewvc/llvm-project?rev=159324&view=rev
Log:
The Mips specific inline asm operand modifier 'z' has the
following description in the gnu sources:

    Print $0 if operand is zero otherwise print the op normally.

Modified:
    llvm/trunk/lib/Target/Mips/MipsAsmPrinter.cpp
    llvm/trunk/test/CodeGen/Mips/inlineasm-operand-code.ll

Modified: llvm/trunk/lib/Target/Mips/MipsAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsAsmPrinter.cpp?rev=159324&r1=159323&r2=159324&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/Mips/MipsAsmPrinter.cpp Wed Jun 27 20:33:40 2012
@@ -323,6 +323,17 @@
         return true;
       O << MO.getImm() - 1;
       return false;
+    case 'z': // $0 if zero, regular printing otherwise
+    {
+      if (MO.getType() != MachineOperand::MO_Immediate)
+        return true;
+      int64_t Val = MO.getImm();
+      if (Val)
+        O << Val;
+      else
+        O << "$0";
+      return false;
+    }
     }
   }
 
@@ -335,11 +346,12 @@
                                            const char *ExtraCode,
                                            raw_ostream &O) {
   if (ExtraCode && ExtraCode[0])
-     return true; // Unknown modifier.
+    return true; // Unknown modifier.
 
   const MachineOperand &MO = MI->getOperand(OpNum);
   assert(MO.isReg() && "unexpected inline asm memory operand");
   O << "0($" << MipsInstPrinter::getRegisterName(MO.getReg()) << ")";
+
   return false;
 }
 

Modified: llvm/trunk/test/CodeGen/Mips/inlineasm-operand-code.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Mips/inlineasm-operand-code.ll?rev=159324&r1=159323&r2=159324&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/Mips/inlineasm-operand-code.ll (original)
+++ llvm/trunk/test/CodeGen/Mips/inlineasm-operand-code.ll Wed Jun 27 20:33:40 2012
@@ -29,5 +29,17 @@
 ;CHECK:	#NO_APP
   tail call i32 asm sideeffect "addi $0,$1,${2:m}", "=r,r,I"(i32 7, i32 -3) nounwind
 
+; z with -3
+;CHECK:	#APP
+;CHECK:	addi ${{[0-9]+}},${{[0-9]+}},-3
+;CHECK:	#NO_APP
+  tail call i32 asm sideeffect "addi $0,$1,${2:z}", "=r,r,I"(i32 7, i32 -3) nounwind
+
+; z with 0
+;CHECK:	#APP
+;CHECK:	addi ${{[0-9]+}},${{[0-9]+}},$0
+;CHECK:	#NO_APP
+  tail call i32 asm sideeffect "addi $0,$1,${2:z}", "=r,r,I"(i32 7, i32 0) nounwind
+
   ret i32 0
 }