6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-24 08:24:33 +00:00
Code Issues Projects Releases Wiki Activity

Generalize some alias analysis logic from atomic

Browse Source 
intrinsics to any IntrWriteArgMem intrinsics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64551 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2009-02-14 10:56:35 +00:00
parent 178eaf37f6
commit d869b3847f
4 changed files with 42 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
utils/TableGen/IntrinsicEmitter.cpp
View File

@ -48,6 +48,9 @@ void IntrinsicEmitter::run(std::ostream &OS) {
// Emit the intrinsic parameter attributes.
EmitAttributes(Ints, OS);
// Emit intrinsic alias analysis mod/ref behavior.
EmitModRefBehavior(Ints, OS);
// Emit a list of intrinsics with corresponding GCC builtins.
EmitGCCBuiltinList(Ints, OS);
@ -481,6 +484,37 @@ EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS) {
OS << "#endif // GET_INTRINSIC_ATTRIBUTES\n\n";
}
/// EmitModRefBehavior - Determine intrinsic alias analysis mod/ref behavior.
void IntrinsicEmitter::
EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
OS << "// Determine intrinsic alias analysis mod/ref behavior.\n";
OS << "#ifdef GET_INTRINSIC_MODREF_BEHAVIOR\n";
OS << "switch (id) {\n";
OS << "default:\n return UnknownModRefBehavior;\n";
for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
if (Ints[i].ModRef == CodeGenIntrinsic::WriteMem)
continue;
OS << "case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
<< ":\n";
switch (Ints[i].ModRef) {
default:
assert(false && "Unknown Mod/Ref type!");
case CodeGenIntrinsic::NoMem:
OS << " return DoesNotAccessMemory;\n";
break;
case CodeGenIntrinsic::ReadArgMem:
case CodeGenIntrinsic::ReadMem:
OS << " return OnlyReadsMemory;\n";
break;
case CodeGenIntrinsic::WriteArgMem:
OS << " return AccessesArguments;\n";
break;
}
}
OS << "}\n";
OS << "#endif // GET_INTRINSIC_MODREF_BEHAVIOR\n\n";
}
void IntrinsicEmitter::
EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
OS << "// Get the GCC builtin that corresponds to an LLVM intrinsic.\n";

2
utils/TableGen/IntrinsicEmitter.h
View File

@ -42,6 +42,8 @@ namespace llvm {
std::ostream &OS);
void EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS);
void EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS);
void EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints,
std::ostream &OS);
void EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,