[Bug tree-optimization/53253] New: Missed opportunity to inline memcmp
law at redhat dot com
gcc-bugzilla@gcc.gnu.org
Sun May 6 04:08:00 GMT 2012
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53253
Bug #: 53253
Summary: Missed opportunity to inline memcmp
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: law@redhat.com
Compile with -O2. Note the length of the memory to be compared via memcmp is
fixed and just 2 bytes. It'd be more efficient and possibly smaller to just
inline the necessary comparisons. Seems to me this ought to be addressed in
our tree optimizers.
int foo(const char* x) {
return memcmp(x,"xx",2) != 0;
}
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