https://bugs.llvm.org/show_bug.cgi?id=49170
Bug ID: 49170
Summary: Failure to optimize strcat immediately after strcpy
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 f(char *s)
{
strcpy(s, "a");
strcat(s, "a");
}
This can be optimized to `memcpy(s, "aa", 3);`. This transformation is done by
GCC, but not by LLVM.
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