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Add assertion

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5321 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-01-16 02:22:08 +00:00
parent f158da2f78
commit 78d6db5627
1 changed files with 5 additions and 2 deletions
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7
lib/CodeGen/PrologEpilogInserter.cpp
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@ -186,20 +186,23 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
// Loop over all of the stack objects, assigning sequential addresses...
MachineFrameInfo *FFI = Fn.getFrameInfo();
unsigned StackAlign = TFI.getStackAlignment();
// Start at the beginning of the local area...
int Offset = TFI.getOffsetOfLocalArea();
for (unsigned i = 0, e = FFI->getObjectIndexEnd(); i != e; ++i) {
Offset += FFI->getObjectSize(i); // Allocate Size bytes...
unsigned Align = FFI->getObjectAlignment(i);
assert(Align < StackAlign && "Cannot align stack object to higher "
"alignment boundary than the stack itself!");
Offset = (Offset+Align-1)/Align*Align; // Adjust to Alignment boundary...
FFI->setObjectOffset(i, -Offset); // Set the computed offset
}
// Align the final stack pointer offset...
unsigned StackAlign = TFI.getStackAlignment();
Offset = (Offset+StackAlign-1)/StackAlign*StackAlign;
Offset = (Offset+StackAlignment-1)/StackAlignment*StackAlignment;
// Set the final value of the stack pointer...
FFI->setStackSize(Offset-TFI.getOffsetOfLocalArea());