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There is no reason to align the stack pointer if there are no callees of this function!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11449 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-02-14 20:10:59 +00:00
parent bb07ef97cf
commit 93799292c1
1 changed files with 5 additions and 2 deletions
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7
lib/CodeGen/PrologEpilogInserter.cpp
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@ -216,8 +216,11 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
FFI->setObjectOffset(i, -Offset); // Set the computed offset
}
// Align the final stack pointer offset...
Offset = (Offset+StackAlignment-1)/StackAlignment*StackAlignment;
// Align the final stack pointer offset, but only if there are calls in the
// function. This ensures that any calls to subroutines have their stack
// frames suitable aligned.
if (FFI->hasCalls())
Offset = (Offset+StackAlignment-1)/StackAlignment*StackAlignment;
// Set the final value of the stack pointer...
FFI->setStackSize(Offset-TFI.getOffsetOfLocalArea());