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SubjectRe: [PATCH v7 2/2] tty: add rpmsg driver
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On Wed, 2020-03-25 at 14:31 +0100, Jiri Slaby wrote:
> The question was exactly about that: can a compiler optimize it to a
> bare number or will strlen call remain there?

$ cat str.c
#include <string.h>

int foo(void)
{
return strlen("abc");
}

$ gcc -c -O2 str.c
$ objdump -d str.o
str.o: file format elf64-x86-64


Disassembly of section .text:

0000000000000000 <foo>:
0: f3 0f 1e fa endbr64
4: b8 03 00 00 00 mov $0x3,%eax
9: c3 retq


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