[PATCH] D39975: [arm] Implement Target Operand Flag MIR serialization.

[Evgenii Stepanov via Phabricator via llvm-commits]

eugenis created this revision.
Herald added subscribers: hiraditya, kristof.beyls, javed.absar, aemerson.

https://reviews.llvm.org/D39975

Files:
  llvm/lib/Target/ARM/ARMInstrInfo.cpp
  llvm/lib/Target/ARM/ARMInstrInfo.h
  llvm/test/CodeGen/ARM/GlobalISel/arm-select-globals-pic.mir


Index: llvm/test/CodeGen/ARM/GlobalISel/arm-select-globals-pic.mir
===================================================================
--- llvm/test/CodeGen/ARM/GlobalISel/arm-select-globals-pic.mir
+++ llvm/test/CodeGen/ARM/GlobalISel/arm-select-globals-pic.mir
@@ -56,7 +56,7 @@
     %0(p0) = G_GLOBAL_VALUE @external_global
     ; DARWIN-MOVT: [[G:%[0-9]+]]:gpr = MOV_ga_pcrel_ldr {{.*}} @external_global :: (load 4 from got)
     ; DARWIN-NOMOVT: [[G:%[0-9]+]]:gpr = LDRLIT_ga_pcrel_ldr {{.*}}@external_global :: (load 4 from got)
-    ; ELF: [[G:%[0-9]+]]:gpr = LDRLIT_ga_pcrel_ldr target-flags(<unknown>) @external_global :: (load 4 from got)
+    ; ELF: [[G:%[0-9]+]]:gpr = LDRLIT_ga_pcrel_ldr target-flags(arm-got) @external_global :: (load 4 from got)
 
     %1(s32) = G_LOAD %0(p0) :: (load 4 from @external_global)
     ; CHECK: [[V:%[0-9]+]]:gpr = LDRi12 [[G]], 0, 14, _ :: (load 4 from @external_global)
@@ -108,7 +108,7 @@
     %0(p0) = G_GLOBAL_VALUE @external_constant
     ; DARWIN-MOVT: [[G:%[0-9]+]]:gpr = MOV_ga_pcrel_ldr {{.*}} @external_constant :: (load 4 from got)
     ; DARWIN-NOMOVT: [[G:%[0-9]+]]:gpr = LDRLIT_ga_pcrel_ldr {{.*}}@external_constant :: (load 4 from got)
-    ; ELF: [[G:%[0-9]+]]:gpr = LDRLIT_ga_pcrel_ldr target-flags(<unknown>) @external_constant :: (load 4 from got)
+    ; ELF: [[G:%[0-9]+]]:gpr = LDRLIT_ga_pcrel_ldr target-flags(arm-got) @external_constant :: (load 4 from got)
 
     %1(s32) = G_LOAD %0(p0) :: (load 4 from @external_constant)
     ; CHECK: [[V:%[0-9]+]]:gpr = LDRi12 [[G]], 0, 14, _ :: (load 4 from @external_constant)
Index: llvm/lib/Target/ARM/ARMInstrInfo.h
===================================================================
--- llvm/lib/Target/ARM/ARMInstrInfo.h
+++ llvm/lib/Target/ARM/ARMInstrInfo.h
@@ -38,6 +38,13 @@
   ///
   const ARMRegisterInfo &getRegisterInfo() const override { return RI; }
 
+  std::pair<unsigned, unsigned>
+  decomposeMachineOperandsTargetFlags(unsigned TF) const override;
+  ArrayRef<std::pair<unsigned, const char *>>
+  getSerializableDirectMachineOperandTargetFlags() const override;
+  ArrayRef<std::pair<unsigned, const char *>>
+  getSerializableBitmaskMachineOperandTargetFlags() const override;
+
 private:
   void expandLoadStackGuard(MachineBasicBlock::iterator MI) const override;
 };
Index: llvm/lib/Target/ARM/ARMInstrInfo.cpp
===================================================================
--- llvm/lib/Target/ARM/ARMInstrInfo.cpp
+++ llvm/lib/Target/ARM/ARMInstrInfo.cpp
@@ -135,3 +135,31 @@
       .setMemRefs(MI->memoperands_begin(), MI->memoperands_end())
       .add(predOps(ARMCC::AL));
 }
+
+std::pair<unsigned, unsigned>
+ARMInstrInfo::decomposeMachineOperandsTargetFlags(unsigned TF) const {
+  const unsigned Mask = ARMII::MO_OPTION_MASK;
+  return std::make_pair(TF & Mask, TF & ~Mask);
+}
+
+ArrayRef<std::pair<unsigned, const char *>>
+ARMInstrInfo::getSerializableDirectMachineOperandTargetFlags() const {
+  using namespace ARMII;
+
+  static const std::pair<unsigned, const char *> TargetFlags[] = {
+      {MO_LO16, "arm-lo16"}, {MO_HI16, "arm-hi16"}};
+  return makeArrayRef(TargetFlags);
+}
+
+ArrayRef<std::pair<unsigned, const char *>>
+ARMInstrInfo::getSerializableBitmaskMachineOperandTargetFlags() const {
+  using namespace ARMII;
+
+  static const std::pair<unsigned, const char *> TargetFlags[] = {
+      {MO_GOT, "arm-got"},
+      {MO_SBREL, "arm-sbrel"},
+      {MO_DLLIMPORT, "arm-dllimport"},
+      {MO_SECREL, "arm-secrel"},
+      {MO_NONLAZY, "arm-nonlazy"}};
+  return makeArrayRef(TargetFlags);
+}


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