diff options
| author | Eli Friedman <efriedma@quicinc.com> | 2025-06-02 18:28:23 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-06-02 18:28:23 -0700 |
| commit | 6f64a600649a95141526043b170aa4244d54c94b (patch) | |
| tree | 3f5a876466db6183c20bd1522ca91407e8feae27 /llvm/lib/CodeGen/MachineScheduler.cpp | |
| parent | b6f9800eae9326f4873f4103257e5a63b932de66 (diff) | |
| download | llvm-6f64a600649a95141526043b170aa4244d54c94b.zip llvm-6f64a600649a95141526043b170aa4244d54c94b.tar.gz llvm-6f64a600649a95141526043b170aa4244d54c94b.tar.bz2 | |
[AArch64] Initial compiler support for SVE unwind on Windows. (#138609)
Most bits of this are straightforward: when we emit SVE instructions in
the prologue/epilogue, emit corresponding opcodes.
The unfortunately nasty bit is the handling of the frame pointer in
functions that use the SVE calling convention. If we have SVE callee
saves, and need to restore the stack pointer from the frame pointer,
it's impossible to encode callee saves that happen after the frame
pointer. So this patch rearranges the stack to put SVE callee saves
first. This isn't really that complicated on its own, but it leads to a
lot of tricky conditionals (see FPAfterSVECalleeSaves).
Diffstat (limited to 'llvm/lib/CodeGen/MachineScheduler.cpp')
0 files changed, 0 insertions, 0 deletions