From: Bill Wendling <isanbard@gmail.com>
Date: Wed, 26 Jan 2011 20:57:43 +0000 (+0000)
Subject: Add support for printing out floating point values from the ARM assembly
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8cb415e4c0032300a1b728c942f8b31acec0a9f5;p=oota-llvm.git

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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124318 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp b/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
index 820c2e6ca6f..941c69d14ea 100644
--- a/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
+++ b/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
@@ -673,12 +673,37 @@ void ARMInstPrinter::printT2AddrModeSoRegOperand(const MCInst *MI,
 
 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,