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(parent: 16ae406) | patch
X86: Use 'mov' instead of 'lea' in Win64 SEH prologues when possible
authorDavid Majnemer <david.majnemer@gmail.com>
Mon, 23 Feb 2015 21:50:27 +0000 (21:50 +0000)
committerDavid Majnemer <david.majnemer@gmail.com>
Mon, 23 Feb 2015 21:50:27 +0000 (21:50 +0000)
commitd71e4c6218bf658e247b20ad16bf3201f99dcc2f
tree618ad320dc9ade7f71dd687a8b7387283391f861tree | snapshot
parent16ae40677683c9a05a2481e5bb4d9ccbff190803commit | diff
X86: Use 'mov' instead of 'lea' in Win64 SEH prologues when possible

'mov' and 'lea' are equivalent when the displacement applied with 'lea'
is zero.  However, 'mov' should encode smaller.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230269 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86FrameLowering.cpp diff | blob | history
test/CodeGen/X86/frameaddr.ll diff | blob | history
test/CodeGen/X86/win64_frame.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors