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| author | Bill Wendling <isanbard@gmail.com> | 2007-12-14 01:48:59 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2007-12-14 01:48:59 +0000 |
| commit | 6b1da9c39f0731d15cb743441bea6d4089efd9f8 (patch) | |
| tree | f8f8de60ae14ed7f1ef4bb61528593e0f522693b /utils | |
| parent | fd80072059bcbbcaa559cfb5bab999ca5a73e5e9 (diff) | |
| download | llvm-6b1da9c39f0731d15cb743441bea6d4089efd9f8.tar.gz llvm-6b1da9c39f0731d15cb743441bea6d4089efd9f8.tar.bz2 llvm-6b1da9c39f0731d15cb743441bea6d4089efd9f8.tar.xz | |
Add flags to indicate that there are "never" side effects or that there "may be"
side effects for machine instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45022 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils')
| -rw-r--r-- | utils/TableGen/CodeGenInstruction.h | 2 | ||||
| -rw-r--r-- | utils/TableGen/CodeGenTarget.cpp | 8 | ||||
| -rw-r--r-- | utils/TableGen/InstrInfoEmitter.cpp | 5 |
3 files changed, 12 insertions, 3 deletions
diff --git a/utils/TableGen/CodeGenInstruction.h b/utils/TableGen/CodeGenInstruction.h index c209b1342f..8f1bf5406d 100644 --- a/utils/TableGen/CodeGenInstruction.h +++ b/utils/TableGen/CodeGenInstruction.h @@ -104,6 +104,8 @@ namespace llvm { bool hasCtrlDep; bool isNotDuplicable; bool hasOptionalDef; + bool mayHaveSideEffects; + bool neverHasSideEffects; /// ParseOperandName - Parse an operand name like "$foo" or "$foo.bar", /// where $foo is a whole operand and $foo.bar refers to a suboperand. diff --git a/utils/TableGen/CodeGenTarget.cpp b/utils/TableGen/CodeGenTarget.cpp index 47bbecb87e..a2fe37017a 100644 --- a/utils/TableGen/CodeGenTarget.cpp +++ b/utils/TableGen/CodeGenTarget.cpp @@ -395,9 +395,15 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr) usesCustomDAGSchedInserter = R->getValueAsBit("usesCustomDAGSchedInserter"); hasCtrlDep = R->getValueAsBit("hasCtrlDep"); isNotDuplicable = R->getValueAsBit("isNotDuplicable"); + mayHaveSideEffects = R->getValueAsBit("mayHaveSideEffects"); + neverHasSideEffects = R->getValueAsBit("neverHasSideEffects"); hasOptionalDef = false; hasVariableNumberOfOperands = false; - + + if (mayHaveSideEffects && neverHasSideEffects) + throw R->getName() + + ": cannot have both 'mayHaveSideEffects' and 'neverHasSideEffects' set!"; + DagInit *DI; try { DI = R->getValueAsDag("OutOperandList"); diff --git a/utils/TableGen/InstrInfoEmitter.cpp b/utils/TableGen/InstrInfoEmitter.cpp index 855a0f090a..697a7e2f39 100644 --- a/utils/TableGen/InstrInfoEmitter.cpp +++ b/utils/TableGen/InstrInfoEmitter.cpp @@ -253,8 +253,9 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num, if (Inst.hasOptionalDef) OS << "|M_HAS_OPTIONAL_DEF"; if (Inst.usesCustomDAGSchedInserter) OS << "|M_USES_CUSTOM_DAG_SCHED_INSERTION"; - if (Inst.hasVariableNumberOfOperands) - OS << "|M_VARIABLE_OPS"; + if (Inst.hasVariableNumberOfOperands) OS << "|M_VARIABLE_OPS"; + if (Inst.mayHaveSideEffects) OS << "|M_MAY_HAVE_SIDE_EFFECTS"; + if (Inst.neverHasSideEffects) OS << "|M_NEVER_HAS_SIDE_EFFECTS"; OS << ", 0"; // Emit all of the target-specific flags... |