The bundle-related MI flags need to be kept in sync with the neighboring
instructions. Don't allow the bulk flag-setting setFlags() function to
change them.
Also don't copy MI flags when cloning an instruction. The clone's bundle
flags will be set when it is explicitly inserted into a bundle.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170459
91177308-0d34-0410-b5e6-
96231b3b80d8
}
void setFlags(unsigned flags) {
- Flags = flags;
+ // Filter out the automatically maintained flags.
+ unsigned Mask = BundledPred | BundledSucc;
+ Flags = (Flags & Mask) | (flags & ~Mask);
}
/// clearFlag - Clear a MI flag.
for (unsigned i = 0; i != MI.getNumOperands(); ++i)
addOperand(MI.getOperand(i));
- // Copy all the flags.
- Flags = MI.Flags;
+ // Copy all the sensible flags.
+ setFlags(MI.Flags);
// Set parent to null.
Parent = 0;