http://llvm.org/bugs/show_bug.cgi?id=4371
Summary: much bigger resulting code than with gcc
Product: clang
Version: unspecified
Platform: PC
OS/Version: FreeBSD
Status: NEW
Severity: normal
Priority: P2
Component: LLVM Codegen
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
lev /tmp$ gcc -c -O2 ansi.c && nm -S ansi.o | grep WriteString
0000000000004970 000000000000190a T WriteString
lev /tmp$ clang -c -O2 ansi.c && nm -S ansi.o | grep WriteString
ansi.c:2891:13: warning: format string is not a string literal (potentially
insecure) [-Wformat-security]
LMsg(err, str);
^~~
1 diagnostic generated.
00000000000003d0 000000000000328e T WriteString
note the size of the WriteString function --- 190a vs 328e, thats quite a lot!
attached test case
this is most probably something in llvm codegen or llvm itself. I dont know
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