diff options
Diffstat (limited to 'include/llvm/Target/Target.td')
| -rw-r--r-- | include/llvm/Target/Target.td | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td index 0f7e6aa..68f0515 100644 --- a/include/llvm/Target/Target.td +++ b/include/llvm/Target/Target.td @@ -32,17 +32,6 @@ class Register<string n> { string Namespace = ""; string AsmName = n; - // SpillSize - If this value is set to a non-zero value, it is the size in - // bits of the spill slot required to hold this register. If this value is - // set to zero, the information is inferred from any register classes the - // register belongs to. - int SpillSize = 0; - - // SpillAlignment - This value is used to specify the alignment required for - // spilling the register. Like SpillSize, this should only be explicitly - // specified if the register is not in a register class. - int SpillAlignment = 0; - // Aliases - A list of registers that this register overlaps with. A read or // modification of this register can potentially read or modify the aliased // registers. @@ -78,6 +67,13 @@ class Register<string n> { // -1 indicates that the gcc number is undefined and -2 that register number // is invalid for this mode/flavour. list<int> DwarfNumbers = []; + + // CostPerUse - Additional cost of instructions using this register compared + // to other registers in its class. The register allocator will try to + // minimize the number of instructions using a register with a CostPerUse. + // This is used by the x86-64 and ARM Thumb targets where some registers + // require larger instruction encodings. + int CostPerUse = 0; } // RegisterWithSubRegs - This can be used to define instances of Register which @@ -200,6 +196,7 @@ class Instruction { bit isIndirectBranch = 0; // Is this instruction an indirect branch? bit isCompare = 0; // Is this instruction a comparison instruction? bit isMoveImm = 0; // Is this instruction a move immediate instruction? + bit isBitcast = 0; // Is this instruction a bitcast instruction? bit isBarrier = 0; // Can control flow fall through this instruction? bit isCall = 0; // Is this instruction a call instruction? bit canFoldAsLoad = 0; // Can this be folded as a simple memory operand? @@ -590,9 +587,10 @@ class MnemonicAlias<string From, string To> { /// InstAlias - This defines an alternate assembly syntax that is allowed to /// match an instruction that has a different (more canonical) assembly /// representation. -class InstAlias<string Asm, dag Result> { +class InstAlias<string Asm, dag Result, bit Emit = 0b1> { string AsmString = Asm; // The .s format to match the instruction with. dag ResultInst = Result; // The MCInst to generate. + bit EmitAlias = Emit; // Emit the alias instead of what's aliased. // Predicates - Predicates that must be true for this to match. list<Predicate> Predicates = []; |
