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MIR Serialization: Serialize the jump table info.

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The jump table info is serialized using a YAML mapping that contains its kind
and a YAML sequence of jump table entries. A jump table entry is a YAML mapping
that has an ID and an inline YAML sequence of machine basic block references.

The testcase 'CodeGen/MIR/X86/jump-table-info.mir' doesn't have any instructions
because one of them contains a jump table index operand. The jump table index
operands will be serialized in a follow up patch, and the appropriate
instructions will be added to this testcase.

Reviewers: Duncan P. N. Exon Smith


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242357 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alex Lorenz
2015-07-15 23:31:07 +00:00
parent 155c5e75fb
commit 81bef8c7a7
5 changed files with 212 additions and 1 deletions
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25
lib/CodeGen/MIRPrinter.cpp
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@@ -46,6 +46,8 @@ public:
void convert(yaml::MachineFunction &MF, const MachineRegisterInfo &RegInfo,
const TargetRegisterInfo *TRI);
void convert(yaml::MachineFrameInfo &YamlMFI, const MachineFrameInfo &MFI);
void convert(ModuleSlotTracker &MST, yaml::MachineJumpTable &YamlJTI,
const MachineJumpTableInfo &JTI);
void convert(ModuleSlotTracker &MST, yaml::MachineBasicBlock &YamlMBB,
const MachineBasicBlock &MBB);
void convertStackObjects(yaml::MachineFunction &MF,
@@ -116,8 +118,10 @@ void MIRPrinter::print(const MachineFunction &MF) {
convert(YamlMF.FrameInfo, *MF.getFrameInfo());
convertStackObjects(YamlMF, *MF.getFrameInfo());
int I = 0;
ModuleSlotTracker MST(MF.getFunction()->getParent());
if (const auto *JumpTableInfo = MF.getJumpTableInfo())
convert(MST, YamlMF.JumpTableInfo, *JumpTableInfo);
int I = 0;
for (const auto &MBB : MF) {
// TODO: Allow printing of non sequentially numbered MBBs.
// This is currently needed as the basic block references get their index
@@ -218,6 +222,25 @@ void MIRPrinter::convertStackObjects(yaml::MachineFunction &MF,
}
}
void MIRPrinter::convert(ModuleSlotTracker &MST,
yaml::MachineJumpTable &YamlJTI,
const MachineJumpTableInfo &JTI) {
YamlJTI.Kind = JTI.getEntryKind();
unsigned ID = 0;
for (const auto &Table : JTI.getJumpTables()) {
std::string Str;
yaml::MachineJumpTable::Entry Entry;
Entry.ID = ID++;
for (const auto *MBB : Table.MBBs) {
raw_string_ostream StrOS(Str);
MIPrinter(StrOS, MST, RegisterMaskIds).printMBBReference(*MBB);
Entry.Blocks.push_back(StrOS.str());
Str.clear();
}
YamlJTI.Entries.push_back(Entry);
}
}
void MIRPrinter::convert(ModuleSlotTracker &MST,
yaml::MachineBasicBlock &YamlMBB,
const MachineBasicBlock &MBB) {