https://bugs.llvm.org/show_bug.cgi?id=36909
Bug ID: 36909
Summary: [X86] Split WriteFSqrt+WriteFDiv into
WriteFSqrt64/WriteFSqrt32 + WriteFDiv64/WriteFDiv32
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: llvm-...@redking.me.uk
CC: llvm-bugs@lists.llvm.org
Blocks: 36908
It's highly unlikely that a target can perform single and double sqrt/div at
the same rate, so why do we put them under the same scheduler class?
x87's fdiv instructions should probably be put under WriteFDiv64 and customized
if necessary.
Referenced Bugs:
https://bugs.llvm.org/show_bug.cgi?id=36908
[Bug 36908] [meta][x86] Improve scheduler classes instruction coverage
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