https://bugs.llvm.org/show_bug.cgi?id=48572
Bug ID: 48572
Summary: movd mm0, mm1 gets an invalid operand error
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: chris.se...@gmail.com
CC: craig.top...@gmail.com, llvm-bugs@lists.llvm.org,
llvm-...@redking.me.uk, pengfei.w...@intel.com,
spatel+l...@rotateright.com
In x86_64, movd mm0, mm1 gets an invalid operand error. gcc and icc both accept
this. The bug happens when there are two mmx register operands for movd. It
doesn't happen for movq or with only a single mmx register operand.
https://godbolt.org/z/7GEdrz
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