https://bugs.llvm.org/show_bug.cgi?id=45582
Bug ID: 45582
Summary: bcr 15,0 syntax is not supported on SystemZ
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: SystemZ
Assignee: unassignedb...@nondot.org
Reporter: i...@linux.ibm.com
CC: llvm-bugs@lists.llvm.org
gas accepts the following:
$ cat test.s
bcr 15,0
$ as test.s
however, clang doesn't:
$ clang -c test.s
test.s:1:8: error: invalid operand for instruction
bcr 15,0
^
it wants 'bcr 15,%r0' instead.
It would be great to accept what gas accepts here, because e.g. musl libc uses
this syntax:
https://git.musl-libc.org/cgit/musl/tree/arch/s390x/atomic_arch.h?h=v1.2.0#n23
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