diff options
Diffstat (limited to 'include/llvm/CodeGen/MachineInstr.h')
| -rw-r--r-- | include/llvm/CodeGen/MachineInstr.h | 60 |
1 files changed, 55 insertions, 5 deletions
diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h index cae38f3470..1558c4f957 100644 --- a/include/llvm/CodeGen/MachineInstr.h +++ b/include/llvm/CodeGen/MachineInstr.h @@ -53,9 +53,11 @@ public: }; enum MIFlag { - NoFlags = 0, - FrameSetup = 1 << 0 // Instruction is used as a part of + NoFlags = 0, + FrameSetup = 1 << 0, // Instruction is used as a part of // function frame setup code. + InsideBundle = 1 << 1 // Instruction is inside a bundle (not + // the first MI in a bundle) }; private: const MCInstrDesc *MCID; // Instruction descriptor. @@ -148,6 +150,12 @@ public: AsmPrinterFlags |= (uint8_t)Flag; } + /// clearAsmPrinterFlag - clear specific AsmPrinter flags + /// + void clearAsmPrinterFlag(CommentFlag Flag) { + AsmPrinterFlags &= ~Flag; + } + /// getFlags - Return the MI flags bitvector. uint8_t getFlags() const { return Flags; @@ -167,10 +175,44 @@ public: Flags = flags; } - /// clearAsmPrinterFlag - clear specific AsmPrinter flags + /// isInsideBundle - Return true if MI is in a bundle (but not the first MI + /// in a bundle). /// - void clearAsmPrinterFlag(CommentFlag Flag) { - AsmPrinterFlags &= ~Flag; + /// A bundle looks like this before it's finalized: + /// ---------------- + /// | MI | + /// ---------------- + /// | + /// ---------------- + /// | MI * | + /// ---------------- + /// | + /// ---------------- + /// | MI * | + /// ---------------- + /// In this case, the first MI starts a bundle but is not inside a bundle, the + /// next 2 MIs are considered "inside" the bundle. + /// + /// After a bundle is finalized, it looks like this: + /// ---------------- + /// | Bundle | + /// ---------------- + /// | + /// ---------------- + /// | MI * | + /// ---------------- + /// | + /// ---------------- + /// | MI * | + /// ---------------- + /// | + /// ---------------- + /// | MI * | + /// ---------------- + /// The first instruction has the special opcode "BUNDLE". It's not "inside" + /// a bundle, but the next three MIs are. + bool isInsideBundle() const { + return getFlag(InsideBundle); } /// getDebugLoc - Returns the debug location id of this MachineInstr. @@ -232,6 +274,14 @@ public: return MemRefsEnd - MemRefs == 1; } + /// API for querying MachineInstr properties. These are bundle aware. + /// + bool hasProperty(unsigned short Flag) const; + + bool isTerminator() const { + return hasProperty(MCID::Terminator); + } + enum MICheckType { CheckDefs, // Check all operands for equality CheckKillDead, // Check all operands including kill / dead markers |