[llvm-commits] [llvm] r124318 - /llvm/trunk/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp

[Bill Wendling]

Author: void
Date: Wed Jan 26 14:57:43 2011
New Revision: 124318

URL: http://llvm.org/viewvc/llvm-project?rev=124318&view=rev
Log:
Add support for printing out floating point values from the ARM assembly
parser. The parser will always give us a binary representation of the floating
point number.

Modified:
    llvm/trunk/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp

Modified: llvm/trunk/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp?rev=124318&r1=124317&r2=124318&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp (original)
+++ llvm/trunk/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp Wed Jan 26 14:57:43 2011
@@ -673,12 +673,37 @@
 
 void ARMInstPrinter::printVFPf32ImmOperand(const MCInst *MI, unsigned OpNum,
                                            raw_ostream &O) {
-  O << '#' << (float)MI->getOperand(OpNum).getFPImm();
+  const MCOperand &MO = MI->getOperand(OpNum);
+  O << '#';
+  if (MO.isFPImm()) {
+    O << (float)MO.getFPImm();
+  } else {
+    union {
+      uint32_t I;
+      float F;
+    } FPUnion;
+
+    FPUnion.I = MO.getImm();
+    O << FPUnion.F;
+  }
 }
 
 void ARMInstPrinter::printVFPf64ImmOperand(const MCInst *MI, unsigned OpNum,
                                            raw_ostream &O) {
-  O << '#' << MI->getOperand(OpNum).getFPImm();
+  const MCOperand &MO = MI->getOperand(OpNum);
+  O << '#';
+  if (MO.isFPImm()) {
+    O << MO.getFPImm();
+  } else {
+    // We expect the binary encoding of a floating point number here.
+    union {
+      uint64_t I;
+      double D;
+    } FPUnion;
+
+    FPUnion.I = MO.getImm();
+    O << FPUnion.D;
+  }
 }
 
 void ARMInstPrinter::printNEONModImmOperand(const MCInst *MI, unsigned OpNum,