[Hexagon] Handle Hexagon-specific machine operand target flags in MIR

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307564 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 99 insertions, 4 deletions

diff --git a/lib/Target/Hexagon/HexagonInstrInfo.cpp b/lib/Target/Hexagon/HexagonInstrInfo.cpp
index 1eac2d3dd8e..da4e5fbb8c0 100644
--- a/lib/Target/Hexagon/HexagonInstrInfo.cpp
+++ b/lib/Target/Hexagon/HexagonInstrInfo.cpp
@@ -1726,6 +1726,39 @@ bool HexagonInstrInfo::getIncrementValue(const MachineInstr &MI,
   return false;
 }
 
+std::pair<unsigned, unsigned>
+HexagonInstrInfo::decomposeMachineOperandsTargetFlags(unsigned TF) const {
+  return std::make_pair(TF & ~HexagonII::MO_Bitmasks,
+                        TF & HexagonII::MO_Bitmasks);
+}
+
+ArrayRef<std::pair<unsigned, const char*>>
+HexagonInstrInfo::getSerializableDirectMachineOperandTargetFlags() const {
+  using namespace HexagonII;
+  static const std::pair<unsigned, const char*> Flags[] = {
+    {MO_PCREL,  "hexagon-pcrel"},
+    {MO_GOT,    "hexagon-got"},
+    {MO_LO16,   "hexagon-lo16"},
+    {MO_HI16,   "hexagon-hi16"},
+    {MO_GPREL,  "hexagon-gprel"},
+    {MO_GDGOT,  "hexagon-gdgot"},
+    {MO_GDPLT,  "hexagon-gdplt"},
+    {MO_IE,     "hexagon-ie"},
+    {MO_IEGOT,  "hexagon-iegot"},
+    {MO_TPREL,  "hexagon-tprel"}
+  };
+  return makeArrayRef(Flags);
+}
+
+ArrayRef<std::pair<unsigned, const char*>>
+HexagonInstrInfo::getSerializableBitmaskMachineOperandTargetFlags() const {
+  using namespace HexagonII;
+  static const std::pair<unsigned, const char*> Flags[] = {
+    {HMOTF_ConstExtended, "hexagon-ext"}
+  };
+  return makeArrayRef(Flags);
+}
+
 unsigned HexagonInstrInfo::createVR(MachineFunction *MF, MVT VT) const {
   MachineRegisterInfo &MRI = MF->getRegInfo();
   const TargetRegisterClass *TRC;
diff --git a/lib/Target/Hexagon/HexagonInstrInfo.h b/lib/Target/Hexagon/HexagonInstrInfo.h
index 944d0161a7c..0436ce3ac47 100644
--- a/lib/Target/Hexagon/HexagonInstrInfo.h
+++ b/lib/Target/Hexagon/HexagonInstrInfo.h
@@ -301,6 +301,27 @@ public:
                         const MachineInstr &UseMI,
                         unsigned UseIdx) const override;
 
+  /// Decompose the machine operand's target flags into two values - the direct
+  /// target flag value and any of bit flags that are applied.
+  std::pair<unsigned, unsigned>
+  decomposeMachineOperandsTargetFlags(unsigned TF) const override;
+
+  /// Return an array that contains the direct target flag values and their
+  /// names.
+  ///
+  /// MIR Serialization is able to serialize only the target flags that are
+  /// defined by this method.
+  ArrayRef<std::pair<unsigned, const char *>>
+  getSerializableDirectMachineOperandTargetFlags() const override;
+
+  /// Return an array that contains the bitmask target flag values and their
+  /// names.
+  ///
+  /// MIR Serialization is able to serialize only the target flags that are
+  /// defined by this method.
+  ArrayRef<std::pair<unsigned, const char *>>
+  getSerializableBitmaskMachineOperandTargetFlags() const override;
+
   bool isTailCall(const MachineInstr &MI) const override;
 
   /// HexagonInstrInfo specifics.
diff --git a/lib/Target/Hexagon/MCTargetDesc/HexagonBaseInfo.h b/lib/Target/Hexagon/MCTargetDesc/HexagonBaseInfo.h
index d8009c5da08..7f90e83fc8e 100644
--- a/lib/Target/Hexagon/MCTargetDesc/HexagonBaseInfo.h
+++ b/lib/Target/Hexagon/MCTargetDesc/HexagonBaseInfo.h
@@ -169,8 +169,11 @@ namespace HexagonII {
 
   // Hexagon specific MO operand flag mask.
   enum HexagonMOTargetFlagVal {
-    //===------------------------------------------------------------------===//
-    // Hexagon Specific MachineOperand flags.
+    // Hexagon-specific MachineOperand target flags.
+    //
+    // When chaning these, make sure to update
+    // getSerializableDirectMachineOperandTargetFlags and
+    // getSerializableBitmaskMachineOperandTargetFlags if needed.
     MO_NO_FLAG,
 
     /// MO_PCREL - On a symbol operand, indicates a PC-relative relocation
@@ -207,10 +210,12 @@ namespace HexagonII {
     MO_TPREL,
 
     // HMOTF_ConstExtended
-    // Addendum to abovem, indicates a const extended op
+    // Addendum to above, indicates a const extended op
     // Can be used as a mask.
-    HMOTF_ConstExtended = 0x80
+    HMOTF_ConstExtended = 0x80,
 
+    // Union of all bitmasks (currently only HMOTF_ConstExtended).
+    MO_Bitmasks = HMOTF_ConstExtended
   };
 
   // Hexagon Sub-instruction classes.
diff --git a/test/CodeGen/MIR/Hexagon/target-flags.mir b/test/CodeGen/MIR/Hexagon/target-flags.mir
new file mode 100644
index 00000000000..656e0a6ea85
--- /dev/null
+++ b/test/CodeGen/MIR/Hexagon/target-flags.mir
@@ -0,0 +1,36 @@
+# RUN: llc -march=hexagon -run-pass none -o - %s | FileCheck %s
+---
+name: fred
+
+body: |
+  bb.0:
+
+    ; CHECK: target-flags(hexagon-pcrel)
+    %r0 = A2_tfrsi target-flags (hexagon-pcrel) 0
+    ; CHECK: target-flags(hexagon-got)
+    %r0 = A2_tfrsi target-flags (hexagon-got) 0
+    ; CHECK: target-flags(hexagon-lo16)
+    %r0 = A2_tfrsi target-flags (hexagon-lo16) 0
+    ; CHECK: target-flags(hexagon-hi16)
+    %r0 = A2_tfrsi target-flags (hexagon-hi16) 0
+    ; CHECK: target-flags(hexagon-gprel)
+    %r0 = A2_tfrsi target-flags (hexagon-gprel) 0
+    ; CHECK: target-flags(hexagon-gdgot)
+    %r0 = A2_tfrsi target-flags (hexagon-gdgot) 0
+    ; CHECK: target-flags(hexagon-gdplt)
+    %r0 = A2_tfrsi target-flags (hexagon-gdplt) 0
+    ; CHECK: target-flags(hexagon-ie)
+    %r0 = A2_tfrsi target-flags (hexagon-ie) 0
+    ; CHECK: target-flags(hexagon-iegot)
+    %r0 = A2_tfrsi target-flags (hexagon-iegot) 0
+    ; CHECK: target-flags(hexagon-tprel)
+    %r0 = A2_tfrsi target-flags (hexagon-tprel) 0
+
+    ; CHECK: target-flags(hexagon-ext)
+    %r0 = A2_tfrsi target-flags (hexagon-ext) 0
+    ; CHECK: target-flags(hexagon-pcrel, hexagon-ext)
+    %r0 = A2_tfrsi target-flags (hexagon-pcrel,hexagon-ext) 0
+    ; CHECK: target-flags(hexagon-ie, hexagon-ext)
+    %r0 = A2_tfrsi target-flags (hexagon-ie,hexagon-ext) 0
+...
+