[PPCInstPrinter] Change printBranchOperand(calltarget) to print the target address in hexadecimal form

```
// llvm-objdump -d output (before)
0: bl .-4
4: bl .+0
8: bl .+4

// llvm-objdump -d output (after) ; GNU objdump -d
0: bl 0xfffffffc / bl 0xfffffffffffffffc
4: bl 0x4
8: bl 0xc
```

Many Operand's are not annotated as OPERAND_PCREL.
They are not affected (e.g. `b .+67108860`). I plan to fix them in future patches.

Modified test/tools/llvm-objdump/ELF/PowerPC/branch-offset.s to test
address space wraparound for powerpc32 and powerpc64.

Reviewed By: sfertile, jhenderson

Differential Revision: https://reviews.llvm.org/D76591

2 files changed, 25 insertions, 18 deletions

diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCInstPrinter.cpp b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCInstPrinter.cpp
index 4dc2b35..c3685e8 100644
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCInstPrinter.cpp
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCInstPrinter.cpp
@@ -413,23 +413,30 @@ void PPCInstPrinter::printU16ImmOperand(const MCInst *MI, unsigned OpNo,
     printOperand(MI, OpNo, O);
 }
 
-void PPCInstPrinter::printBranchOperand(const MCInst *MI, unsigned OpNo,
-                                        raw_ostream &O) {
+void PPCInstPrinter::printBranchOperand(const MCInst *MI, uint64_t Address,
+                                        unsigned OpNo, raw_ostream &O,
+                                        bool RelativeForm) {
   if (!MI->getOperand(OpNo).isImm())
     return printOperand(MI, OpNo, O);
-
-  // Branches can take an immediate operand. This is used by the branch
-  // selection pass to print, for example `.+8` (for ELF) or `$+8` (for AIX) to
-  // express an eight byte displacement from the program counter.
-  if (!TT.isOSAIX())
-    O << ".";
-  else
-    O << "$";
-
   int32_t Imm = SignExtend32<32>((unsigned)MI->getOperand(OpNo).getImm() << 2);
-  if (Imm >= 0)
-    O << "+";
-  O << Imm;
+  if (PrintBranchImmAsAddress && !RelativeForm) {
+    uint64_t Target = Address + Imm;
+    if (!TT.isPPC64())
+      Target &= 0xffffffff;
+    O << formatHex(Target);
+  } else {
+    // Branches can take an immediate operand. This is used by the branch
+    // selection pass to print, for example `.+8` (for ELF) or `$+8` (for AIX)
+    // to express an eight byte displacement from the program counter.
+    if (!TT.isOSAIX())
+      O << ".";
+    else
+      O << "$";
+
+    if (Imm >= 0)
+      O << "+";
+    O << Imm;
+  }
 }
 
 void PPCInstPrinter::printAbsBranchOperand(const MCInst *MI, unsigned OpNo,
diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCInstPrinter.h b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCInstPrinter.h
index 93ac2ce..6339a42 100644
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCInstPrinter.h
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCInstPrinter.h
@@ -64,10 +64,10 @@ public:
   void printS34ImmOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
   void printU16ImmOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
   void printImmZeroOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
-  void printBranchOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
-  void printBranchOperand(const MCInst *MI, uint64_t /*Address*/, unsigned OpNo,
-                          raw_ostream &O) {
-    printBranchOperand(MI, OpNo, O);
+  void printBranchOperand(const MCInst *MI, uint64_t Address, unsigned OpNo,
+                          raw_ostream &O, bool RelativeForm = false);
+  void printBranchOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {
+    printBranchOperand(MI, 0, OpNo, O, true);
   }
   void printAbsBranchOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
   void printTLSCall(const MCInst *MI, unsigned OpNo, raw_ostream &O);