https://bugs.llvm.org/show_bug.cgi?id=47091
Bug ID: 47091
Summary: Failure to properly optimize successive > 0 identities
to unsigned comparisons
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
void bar(int, int);
void foo(int a, int b)
{
if (a >= 0 && b >= 0 && a < 32 && b < 128)
bar(a, b);
}
The if's condition can be optimized to `(unsigned)a < 32 && (unsigned)b < 128`.
This transformation is done by GCC, but not by LLVM.
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