6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-21 23:17:16 +00:00
Code Issues Projects Releases Wiki Activity

Make CodeGen TBAA-aware.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116890 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-10-20 00:31:05 +00:00
parent 8b95c3ebfb
commit f96e4bd2a3
10 changed files with 92 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/CodeGen/MachineInstr.cpp
+17 -3
View File
@@ -367,9 +367,11 @@ MachinePointerInfo MachinePointerInfo::getStack(int64_t Offset) {
}
MachineMemOperand::MachineMemOperand(MachinePointerInfo ptrinfo, unsigned f,
uint64_t s, unsigned int a)
uint64_t s, unsigned int a,
const MDNode *TBAAInfo)
: PtrInfo(ptrinfo), Size(s),
Flags((f & ((1 << MOMaxBits) - 1)) | ((Log2_32(a) + 1) << MOMaxBits)) {
Flags((f & ((1 << MOMaxBits) - 1)) | ((Log2_32(a) + 1) << MOMaxBits)),
TBAAInfo(TBAAInfo) {
assert((PtrInfo.V == 0 || isa<PointerType>(PtrInfo.V->getType())) &&
"invalid pointer value");
assert(getBaseAlignment() == a && "Alignment is not a power of 2!");
@@ -442,6 +444,16 @@ raw_ostream &llvm::operator<<(raw_ostream &OS, const MachineMemOperand &MMO) {
MMO.getBaseAlignment() != MMO.getSize())
OS << "(align=" << MMO.getAlignment() << ")";
// Print TBAA info.
if (const MDNode *TBAAInfo = MMO.getTBAAInfo()) {
OS << "(tbaa=";
if (TBAAInfo->getNumOperands() > 0)
WriteAsOperand(OS, TBAAInfo->getOperand(0), /*PrintType=*/false);
else
OS << "<unknown>";
OS << ")";
}
return OS;
}
@@ -1198,7 +1210,9 @@ bool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const {
if (PSV->isConstant(MFI))
continue;
// If we have an AliasAnalysis, ask it whether the memory is constant.
if (AA && AA->pointsToConstantMemory(V))
if (AA && AA->pointsToConstantMemory(
AliasAnalysis::Location(V, (*I)->getSize(),
(*I)->getTBAAInfo())))
continue;
}