[mips] Use `formatImm` call to print immediate value in the `MipsInstPrinter`

That allows, for example, to print hex-formatted immediates using
llvm-objdump --print-imm-hex command line option.

Differential Revision: http://reviews.llvm.org/D18195

llvm-svn: 263704

2 files changed, 13 insertions, 2 deletions

diff --git a/llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp b/llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
index f2ef0b2ad77..768ed20f4db 100644
--- a/llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
+++ b/llvm/lib/Target/Mips/InstPrinter/MipsInstPrinter.cpp
@@ -195,7 +195,7 @@ void MipsInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
   }
 
   if (Op.isImm()) {
-    O << Op.getImm();
+    O << formatImm(Op.getImm());
     return;
   }
 
@@ -211,7 +211,7 @@ void MipsInstPrinter::printUImm(const MCInst *MI, int opNum, raw_ostream &O) {
     Imm -= Offset;
     Imm &= (1 << Bits) - 1;
     Imm += Offset;
-    O << Imm;
+    O << formatImm(Imm);
     return;
   }
 
diff --git a/llvm/test/MC/Mips/hex-immediates.s b/llvm/test/MC/Mips/hex-immediates.s
new file mode 100644
index 00000000000..7bf6f71266e
--- /dev/null
+++ b/llvm/test/MC/Mips/hex-immediates.s
@@ -0,0 +1,11 @@
+# RUN: llvm-mc -filetype=obj %s -triple=mips-unknown-linux \
+# RUN:   | llvm-objdump -d --print-imm-hex - | FileCheck %s
+
+# CHECK: jal   0x20
+# CHECK: addiu $sp, $sp, -0x20
+# CHECK: sw    $2,  0x10($fp)
+
+jal     32
+addiu   $sp, $sp, -32
+sw      $2, 16($fp)
+lui     $2, 2