https://bugs.llvm.org/show_bug.cgi?id=49047
Bug ID: 49047
Summary: Fix ldrexd/strexd miscompilation in the ARM backend on
Cortex-M
Product: new-bugs
Version: 11.0
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Blocks: 48902
I discovered an issue in the ARM backend: it was emitting ldrexd/strexd
instructions even for Cortex-M microcontrollers which don't have these
instructions.
This is fixed in
https://reviews.llvm.org/rGaecdf15cc7f866180dc769265b8183cad34bb33a. It would
be great to have this fix in LLVM 12 too (I discovered this issue only a few
days after the branch).
Referenced Bugs:
https://bugs.llvm.org/show_bug.cgi?id=48902
[Bug 48902] [meta] 12.0.0 Release Blockers
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