diff options
| author | Chris Lattner <sabre@nondot.org> | 2004-02-14 20:10:59 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-02-14 20:10:59 +0000 |
| commit | 93799292c1c04c53ff077a427737b3ffbd0445ab (patch) | |
| tree | 85dfda17c270a84b7f8740646c216e3b72f28055 /lib/CodeGen/PrologEpilogInserter.cpp | |
| parent | bb07ef97cfbe88eb5d69784acab5f36815738881 (diff) | |
| download | llvm-93799292c1c04c53ff077a427737b3ffbd0445ab.tar.gz llvm-93799292c1c04c53ff077a427737b3ffbd0445ab.tar.bz2 llvm-93799292c1c04c53ff077a427737b3ffbd0445ab.tar.xz | |
There is no reason to align the stack pointer if there are no callees of this function!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11449 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/PrologEpilogInserter.cpp')
| -rw-r--r-- | lib/CodeGen/PrologEpilogInserter.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp index 8f34cf48ad..bf1726d6ed 100644 --- a/lib/CodeGen/PrologEpilogInserter.cpp +++ b/lib/CodeGen/PrologEpilogInserter.cpp @@ -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()); |