[AMDGPU] AsmParser: Support for sext() modifier in SDWA. Some code cleaning in AMDGPUOperand.

Summary:
sext() modifier is supported in SDWA instructions only for integer operands. Spec is unclear should integer operands support abs and neg modifiers with sext - for now they are not supported.
Renamed InputModsWithNoDefault to FloatInputMods. Added SextInputMods for operands that support sext() modifier.
Added AMDGPUOperand::Modifier struct to handle register and immediate modifiers.
Code cleaning in AMDGPUOperand class: organize method in groups (render-, predicate-methods...).

Reviewers: vpykhtin, artem.tamazov, tstellarAMD

Subscribers: arsenm, kzhuravl

Differential Revision: http://reviews.llvm.org/D20968

llvm-svn: 272384

1 files changed, 14 insertions, 2 deletions

diff --git a/llvm/lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp b/llvm/lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp
index ba1175c5cab..297a802292d 100644
--- a/llvm/lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp
+++ b/llvm/lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp
@@ -423,8 +423,9 @@ void AMDGPUInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
   }
 }
 
-void AMDGPUInstPrinter::printOperandAndMods(const MCInst *MI, unsigned OpNo,
-                                            raw_ostream &O) {
+void AMDGPUInstPrinter::printOperandAndFPInputMods(const MCInst *MI,
+                                                      unsigned OpNo,
+                                                      raw_ostream &O) {
   unsigned InputModifiers = MI->getOperand(OpNo).getImm();
   if (InputModifiers & SISrcMods::NEG)
     O << '-';
@@ -435,6 +436,17 @@ void AMDGPUInstPrinter::printOperandAndMods(const MCInst *MI, unsigned OpNo,
     O << '|';
 }
 
+void AMDGPUInstPrinter::printOperandAndIntInputMods(const MCInst *MI,
+                                                     unsigned OpNo,
+                                                     raw_ostream &O) {
+  unsigned InputModifiers = MI->getOperand(OpNo).getImm();
+  if (InputModifiers & SISrcMods::SEXT)
+    O << "sext(";
+  printOperand(MI, OpNo + 1, O);
+  if (InputModifiers & SISrcMods::SEXT)
+    O << ')';
+}
+
 
 void AMDGPUInstPrinter::printDPPCtrl(const MCInst *MI, unsigned OpNo,
                                              raw_ostream &O) {