diff options
author | Dan Gohman <gohman@apple.com> | 2009-10-07 17:38:06 +0000 |
---|---|---|
committer | Dan Gohman <gohman@apple.com> | 2009-10-07 17:38:06 +0000 |
commit | e33f44cfc547359bc28526e4c5e1852b600b4448 (patch) | |
tree | d809153a8332a1292de9f01eb8cf5cfbead8297e /lib/Target/XCore/XCoreInstrInfo.cpp | |
parent | 2dbc4c84f6de55deeea6631201c5df943d5327c0 (diff) | |
download | llvm-e33f44cfc547359bc28526e4c5e1852b600b4448.tar.gz llvm-e33f44cfc547359bc28526e4c5e1852b600b4448.tar.bz2 llvm-e33f44cfc547359bc28526e4c5e1852b600b4448.tar.xz |
Replace TargetInstrInfo::isInvariantLoad and its target-specific
implementations with a new MachineInstr::isInvariantLoad, which uses
MachineMemOperands and is target-independent. This brings MachineLICM
and other functionality to targets which previously lacked an
isInvariantLoad implementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83475 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/XCore/XCoreInstrInfo.cpp')
-rw-r--r-- | lib/Target/XCore/XCoreInstrInfo.cpp | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/lib/Target/XCore/XCoreInstrInfo.cpp b/lib/Target/XCore/XCoreInstrInfo.cpp index 9461e20b3a..e616fe68e2 100644 --- a/lib/Target/XCore/XCoreInstrInfo.cpp +++ b/lib/Target/XCore/XCoreInstrInfo.cpp @@ -116,30 +116,6 @@ XCoreInstrInfo::isStoreToStackSlot(const MachineInstr *MI, return 0; } -/// isInvariantLoad - Return true if the specified instruction (which is marked -/// mayLoad) is loading from a location whose value is invariant across the -/// function. For example, loading a value from the constant pool or from -/// from the argument area of a function if it does not change. This should -/// only return true of *all* loads the instruction does are invariant (if it -/// does multiple loads). -bool -XCoreInstrInfo::isInvariantLoad(const MachineInstr *MI) const { - // Loads from constants pools and loads from invariant argument slots are - // invariant - int Opcode = MI->getOpcode(); - if (Opcode == XCore::LDWCP_ru6 || Opcode == XCore::LDWCP_lru6) { - return MI->getOperand(1).isCPI(); - } - int FrameIndex; - if (isLoadFromStackSlot(MI, FrameIndex)) { - const MachineFrameInfo &MFI = - *MI->getParent()->getParent()->getFrameInfo(); - return MFI.isFixedObjectIndex(FrameIndex) && - MFI.isImmutableObjectIndex(FrameIndex); - } - return false; -} - //===----------------------------------------------------------------------===// // Branch Analysis //===----------------------------------------------------------------------===// |