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| author | Hal Finkel <hfinkel@anl.gov> | 2013-03-14 19:34:32 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-03-14 19:34:32 +0000 |
| commit | 100a94bc93dcf9af99eba169599ce950faf0df7e (patch) | |
| tree | 668744b339b3d30c64b59998819ac514c3202c2b /lib/CodeGen/MachineFunction.cpp | |
| parent | d81511f0a671a9271d7ba10cce6c27331b57f553 (diff) | |
Not all PPC functions with a frame pointer need a RS spill slot
We used to add a spill slot for the register scavenger whenever the function
has a frame pointer. This is unnecessarily conservative: We may need the spill
slot for dynamic stack allocations, and functions with dynamic stack
allocations always have a FP, but we might also have a FP for other reasons
(such as the user explicitly disabling frame-pointer elimination), and we don't
necessarily need a spill slot for those functions.
The structsinregs test needed adjustment because it disables FP elimination.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177106 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineFunction.cpp')
0 files changed, 0 insertions, 0 deletions