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authorReed Kotler <rkotler@mips.com>2013-05-14 02:00:24 +0000
committerReed Kotler <rkotler@mips.com>2013-05-14 02:00:24 +0000
commiteafa96485a6c3ce0de4f511ed080a64a7a44f2bb (patch)
tree4d5763f006f55954147e2e564a68ee67cb72e366 /lib/IR/Dominators.cpp
parentdd29df06fa72de9e370cdd9d8e32ac5437a578c7 (diff)
This is the first of three patches which creates stubs used for
Mips16/32 floating point interoperability. When Mips16 code calls external functions that would normally have some of its parameters or return values passed in floating point registers, it needs (Mips32) helper functions to do this because while in Mips16 mode there is no ability to access the floating point registers. In Pic mode, this is done with a set of predefined functions in libc. This case is already handled in llvm for Mips16. In static relocation mode, for efficiency reasons, the compiler generates stubs that the linker will use if it turns out that the external function is a Mips32 function. (If it's Mips16, then it does not need the helper stubs). These stubs are identically named and the linker knows about these tricks and will not create multiple copies and will delete them if they are not needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181753 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/IR/Dominators.cpp')
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