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| author | Patryk Wychowaniec <pwychowaniec@pm.me> | 2022-05-05 03:07:41 +0000 |
|---|---|---|
| committer | Ben Shi <ben.shi@streamcomputing.com> | 2022-05-05 03:10:59 +0000 |
| commit | 6641c57aebc688b365587b990bb206c7f2e43c19 (patch) | |
| tree | 2c8c4bf46245dbbb3f1f9687dadfb88ea1304ceb /clang/lib/Frontend/CreateInvocationFromCommandLine.cpp | |
| parent | 8bb10436ab9383cb226153128cac9329db29e2d5 (diff) | |
| download | llvm-6641c57aebc688b365587b990bb206c7f2e43c19.zip llvm-6641c57aebc688b365587b990bb206c7f2e43c19.tar.gz llvm-6641c57aebc688b365587b990bb206c7f2e43c19.tar.bz2 | |
[AVR] Always expand STDSPQRr & STDWSPQRr
Currently, STDSPQRr and STDWSPQRr are expanded only during
AVRFrameLowering - this means that if any of those instructions happen
to appear _outside_ of the typical FrameSetup / FrameDestroy
context, they wouldn't get substituted, eventually leading to a crash:
```
LLVM ERROR: Not supported instr: <MCInst XXX <MCOperand Reg:1>
<MCOperand Imm:15> <MCOperand Reg:53>>
```
This commit fixes this issue by moving expansion of those two opcodes
into AVRExpandPseudo.
This bug was originally discovered due to the Rust compiler_builtins
library. Its 0.1.37 release contained a 128-bit software
division/remainder routine that exercised this buggy branch in the code.
Reviewed By: benshi001
Differential Revision: https://reviews.llvm.org/D123528
Diffstat (limited to 'clang/lib/Frontend/CreateInvocationFromCommandLine.cpp')
0 files changed, 0 insertions, 0 deletions