[Bug tree-optimization/96599] New: Failure to optimize self-stpcpy to strlen
gabravier at gmail dot com
gcc-bugzilla@gcc.gnu.org
Thu Aug 13 08:10:17 GMT 2020
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96599
Bug ID: 96599
Summary: Failure to optimize self-stpcpy to strlen
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: gabravier at gmail dot com
Target Milestone: ---
char *f(char *a)
{
return stpcpy(a, a);
}
This can be optimized to `strlen(a) + a`. This transformation is done by LLVM,
but not by GCC.
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