http://llvm.org/bugs/show_bug.cgi?id=20019
Bug ID: 20019
Summary: Clang doesn't pass -march to external linker
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 12651
--> http://llvm.org/bugs/attachment.cgi?id=12651&action=edit
log file showing clang and gcc compilations of aarch64 code with -march
Seems to be the same problem as Bug 14697 but it is happening again on trunk.
The -march option is not passed to the linker if -no-integrated-as is used, and
when ARMv8 crypto extensions are used, the assember complains that the
processor does not support the crypto instructions.
The linker can be given the -march option using -Wa,-march=foo but gcc passes
the -march option down without needing -Wa.
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