https://bugs.llvm.org/show_bug.cgi?id=38075
Bug ID: 38075
Summary: llc for Power allows illegal combinations of -mcpu and
-mattr
Product: new-bugs
Version: 5.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: bcroc...@redhat.com
CC: llvm-bugs@lists.llvm.org
The llc command on PowerPC allows combinations of -mcpu and -mattr
that should be illegal.
For example,
% llc -mcpu=970 -mattr=+altivec,+vsx
is allowed, but the 970 is a (pre-VSX) Power ISA v2.03 CPU,
while VSX was not introduced until Power ISA v2.06.
This problem pertains both to the free-standing llc command
and to llc as invoked from the Mesa graphics library.
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