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Add non-temporal flags to MachineMemOperand.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96226 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Greene 2010-02-15 16:48:31 +00:00
parent b0bc6c361d
commit ba2b297ca5
2 changed files with 11 additions and 5 deletions
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11
include/llvm/CodeGen/MachineMemOperand.h
View File

@ -46,7 +46,11 @@ public:
/// The memory access writes data.
MOStore = 2,
/// The memory access is volatile.
MOVolatile = 4
MOVolatile = 4,
/// The memory access is non-temporal.
MONonTemporal = 8,
// This is the number of bits we need to represent flags.
MOMaxBits = 4
};
/// MachineMemOperand - Construct an MachineMemOperand object with the
@ -64,7 +68,7 @@ public:
const Value *getValue() const { return V; }
/// getFlags - Return the raw flags of the source value, \see MemOperandFlags.
unsigned int getFlags() const { return Flags & 7; }
unsigned int getFlags() const { return Flags & ((1 << MOMaxBits) - 1); }
/// getOffset - For normal values, this is a byte offset added to the base
/// address. For PseudoSourceValue::FPRel values, this is the FrameIndex
@ -80,11 +84,12 @@ public:
/// getBaseAlignment - Return the minimum known alignment in bytes of the
/// base address, without the offset.
uint64_t getBaseAlignment() const { return (1u << (Flags >> 3)) >> 1; }
uint64_t getBaseAlignment() const { return (1u << (Flags >> MOMaxBits)) >> 1; }
bool isLoad() const { return Flags & MOLoad; }
bool isStore() const { return Flags & MOStore; }
bool isVolatile() const { return Flags & MOVolatile; }
bool isNonTemporal() const { return Flags & MONonTemporal; }
/// refineAlignment - Update this MachineMemOperand to reflect the alignment
/// of MMO, if it has a greater alignment. This must only be used when the

5
lib/CodeGen/MachineInstr.cpp
View File

@ -305,7 +305,7 @@ void MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const {
MachineMemOperand::MachineMemOperand(const Value *v, unsigned int f,
int64_t o, uint64_t s, unsigned int a)
: Offset(o), Size(s), V(v),
Flags((f & 7) | ((Log2_32(a) + 1) << 3)) {
Flags((f & ((1 << MOMaxBits) - 1)) | ((Log2_32(a) + 1) << MOMaxBits)) {
assert(getBaseAlignment() == a && "Alignment is not a power of 2!");
assert((isLoad() || isStore()) && "Not a load/store!");
}
@ -327,7 +327,8 @@ void MachineMemOperand::refineAlignment(const MachineMemOperand *MMO) {
if (MMO->getBaseAlignment() >= getBaseAlignment()) {
// Update the alignment value.
Flags = (Flags & 7) | ((Log2_32(MMO->getBaseAlignment()) + 1) << 3);
Flags = (Flags & ((1 << MOMaxBits) - 1)) |
((Log2_32(MMO->getBaseAlignment()) + 1) << MOMaxBits);
// Also update the base and offset, because the new alignment may
// not be applicable with the old ones.
V = MMO->getValue();