https://llvm.org/bugs/show_bug.cgi?id=26317
Bug ID: 26317
Summary: Option -fno-math-builtin reported by -help, but not
supported by clang driver
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Driver
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 15719
--> https://llvm.org/bugs/attachment.cgi?id=15719&action=edit
Example program from source tree attached for convenience
clang --help reports -fno-math-builtin as one of its options:
-fno-math-builtin Disable implicit builtin knowledge of math functions
However the option is not. Taking the clang test test/CodeGen/nomathbuiltin.c
(attached for convenience), we run:
$ clang -fno-math-builtin -c nomathbuiltin.c
clang-3.9: warning: argument unused during compilation: '-fno-math-builtin'
This appears to be an option for CC1 only:
$ clang -cc1 -fno-math-builtin nomathbuiltin.c
Works without error. The option should either be removed from the list reported
by clang --help, or be promoted to be accepted by the top level clang driver
(which would seem more consistent).
Issue identified with commit 7506929a38783ed7038f893c8f1f59f6a4ccfd20,
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@258290
91177308-0d34-0410-b5e6-96231b3b80d8
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
llvm-bugs mailing list
[email protected]
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
