https://bugs.llvm.org/show_bug.cgi?id=50217
Bug ID: 50217
Summary: [PowerPC] Unnecessary zero-extension for atomics
Product: libraries
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: PowerPC
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Many of the tests in llvm/test/CodeGen/PowerPC/atomics-i{8,16,32}-ldst.ll have
unnecessary zero-extensions. These were originally extending from i8/i16/i32 to
a full i64 register, but since https://reviews.llvm.org/D101342 SelectionDAG
folds away any extension to i32 (as the atomics themselves are zero-extending),
however, they all still have an unnecessary i32-to-i64 zero extension.
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