MIR Serialization: Serialize the operand's bit mask target flags.

This commit adds support for bit mask target flag serialization to the MIR
printer and the MIR parser. It also adds support for the machine operand's
target flag serialization to the AArch64 target.

Reviewers: Duncan P. N. Exon Smith
llvm-svn: 245383

1 files changed, 31 insertions, 0 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
index bcf11d00e9e..f0e02489ae3 100644
--- a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
@@ -2978,3 +2978,34 @@ bool AArch64InstrInfo::optimizeCondBranch(MachineInstr *MI) const {
   MI->eraseFromParent();
   return true;
 }
+
+std::pair<unsigned, unsigned>
+AArch64InstrInfo::decomposeMachineOperandsTargetFlags(unsigned TF) const {
+  const unsigned Mask = AArch64II::MO_FRAGMENT;
+  return std::make_pair(TF & Mask, TF & ~Mask);
+}
+
+ArrayRef<std::pair<unsigned, const char *>>
+AArch64InstrInfo::getSerializableDirectMachineOperandTargetFlags() const {
+  using namespace AArch64II;
+  static std::pair<unsigned, const char *> TargetFlags[] = {
+      {MO_PAGE, "aarch64-page"},
+      {MO_PAGEOFF, "aarch64-pageoff"},
+      {MO_G3, "aarch64-g3"},
+      {MO_G2, "aarch64-g2"},
+      {MO_G1, "aarch64-g1"},
+      {MO_G0, "aarch64-g0"},
+      {MO_HI12, "aarch64-hi12"}};
+  return makeArrayRef(TargetFlags);
+}
+
+ArrayRef<std::pair<unsigned, const char *>>
+AArch64InstrInfo::getSerializableBitmaskMachineOperandTargetFlags() const {
+  using namespace AArch64II;
+  static std::pair<unsigned, const char *> TargetFlags[] = {
+      {MO_GOT, "aarch64-got"},
+      {MO_NC, "aarch64-nc"},
+      {MO_TLS, "aarch64-tls"},
+      {MO_CONSTPOOL, "aarch64-constant-pool"}};
+  return makeArrayRef(TargetFlags);
+}