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(parent: a794ef7) | patch
Anyext tweaks for x86. When extloading a value to i32 or i64, choose
authorDan Gohman <gohman@apple.com>
Fri, 22 Aug 2008 19:19:31 +0000 (19:19 +0000)
committerDan Gohman <gohman@apple.com>
Fri, 22 Aug 2008 19:19:31 +0000 (19:19 +0000)
commitb4ae2da7e4bacbcfee146c30b03c568274b320b8
treef90945339ed8a7e536224e9d22545187634ffd03tree | snapshot
parenta794ef7f5d82c7f88d86932746cb9ae2c1c40200commit | diff
Anyext tweaks for x86. When extloading a value to i32 or i64, choose
instructions that define the full 32 or 64-bit value. When anyexting
from i8 to i16 or i32, it's not necessary to zero out the high
portion of the register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55190 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86Instr64bit.td diff | blob | history
lib/Target/X86/X86InstrInfo.td diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors