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| author | Lang Hames <lhames@gmail.com> | 2022-10-30 22:14:30 -0700 |
|---|---|---|
| committer | Lang Hames <lhames@gmail.com> | 2022-10-31 08:41:20 -0700 |
| commit | 5af9e648ae10c50d94ab169f65907e12f210ec99 (patch) | |
| tree | 3e8c9dc650f7f55902b43b5856d37afb079e39f4 /llvm/lib/Support/Host.cpp | |
| parent | 2406ba1563d5d2805cee1d41c29f2837e2fd5bd7 (diff) | |
| download | llvm-5af9e648ae10c50d94ab169f65907e12f210ec99.zip llvm-5af9e648ae10c50d94ab169f65907e12f210ec99.tar.gz llvm-5af9e648ae10c50d94ab169f65907e12f210ec99.tar.bz2 | |
[JITLink][AArch46] Update aarch64 pointer jump stub sequence, add utilities.
Updates the aarch64 pointer jump stub sequence to:
ADRP x16, <ptr>@page21
LDR x16, [x16, <ptr>@pageoff12]
BR x16
from:
LDR x16, <ptr>@ldrimm19
BR x16
The old sequence can only reference pointers within +/-1Mb, which may not be
enough for large object files. The new sequence can reach pointers within
+/-4Gb. (A future pre-fixup-pass could apply range-based optimizations to
turn this into an ldr-br-nop sequence.)
Also adds createPointerJumpStubBlock and createAnonymousPointerJumpStub
utilities along the same lines as their x86-64 counterparts.
The PLTTableManager is updated to use the new utility functions.
Diffstat (limited to 'llvm/lib/Support/Host.cpp')
0 files changed, 0 insertions, 0 deletions