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MachineInstr: Inline the fast path (non-bundle instruction) of hasProperty.

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This is particularly helpful as both arguments tend to be constants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152991 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-03-17 17:03:45 +00:00
parent 70de1e442d
commit 85f9cef27e
2 changed files with 14 additions and 7 deletions
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13
include/llvm/CodeGen/MachineInstr.h
View File

@ -308,7 +308,14 @@ public:
/// The first argument is the property being queried.
/// The second argument indicates whether the query should look inside
/// instruction bundles.
bool hasProperty(unsigned Flag, QueryType Type = AnyInBundle) const;
bool hasProperty(unsigned MCFlag, QueryType Type = AnyInBundle) const {
// Inline the fast path.
if (Type == IgnoreBundle || !isBundle())
return getDesc().getFlags() & (1 << MCFlag);
// If we have a bundle, take the slow path.
return hasPropertyInBundle(1 << MCFlag, Type);
}
/// isVariadic - Return true if this instruction can have a variable number of
/// operands. In this case, the variable operands will be after the normal
@ -911,6 +918,10 @@ private:
/// this instruction from their respective use lists. This requires that the
/// operands not be on their use lists yet.
void AddRegOperandsToUseLists(MachineRegisterInfo &RegInfo);
/// hasPropertyInBundle - Slow path for hasProperty when we're dealing with a
/// bundle.
bool hasPropertyInBundle(unsigned Mask, QueryType Type) const;
};
/// MachineInstrExpressionTrait - Special DenseMapInfo traits to compare

8
lib/CodeGen/MachineInstr.cpp
View File

@ -751,15 +751,11 @@ void MachineInstr::addMemOperand(MachineFunction &MF,
NumMemRefs = NewNum;
}
bool
MachineInstr::hasProperty(unsigned MCFlag, QueryType Type) const {
if (Type == IgnoreBundle || !isBundle())
return getDesc().getFlags() & (1 << MCFlag);
bool MachineInstr::hasPropertyInBundle(unsigned Mask, QueryType Type) const {
const MachineBasicBlock *MBB = getParent();
MachineBasicBlock::const_instr_iterator MII = *this; ++MII;
while (MII != MBB->end() && MII->isInsideBundle()) {
if (MII->getDesc().getFlags() & (1 << MCFlag)) {
if (MII->getDesc().getFlags() & Mask) {
if (Type == AnyInBundle)
return true;
} else {