https://bugs.llvm.org/show_bug.cgi?id=48995
Bug ID: 48995
Summary: Failure to optimize certain redundant operations
around type conversions
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: gabrav...@gmail.com
CC: llvm-bugs@lists.llvm.org
int32_t f(int64_t a, int b)
{
return ~(int32_t)(~a >> b);
}
This can be optimized to `return a >> b;`. This transformation is done by GCC,
but not by LLVM.
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