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| author | Evan Cheng <evan.cheng@apple.com> | 2007-10-19 21:23:22 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2007-10-19 21:23:22 +0000 |
| commit | 4a7e72ff3e293d3fcf0a55338ec6316b3731aacb (patch) | |
| tree | 56c81a5bb8979cc3df924078dcbfb328a5d9ee64 /lib/CodeGen/TwoAddressInstructionPass.cpp | |
| parent | 46329b72097fe55d565d8d05b3c07dfdde04bf8e (diff) | |
| download | external_llvm-4a7e72ff3e293d3fcf0a55338ec6316b3731aacb.tar.gz external_llvm-4a7e72ff3e293d3fcf0a55338ec6316b3731aacb.tar.bz2 external_llvm-4a7e72ff3e293d3fcf0a55338ec6316b3731aacb.zip | |
Local spiller optimization:
Turn a store folding instruction into a load folding instruction. e.g.
xorl %edi, %eax
movl %eax, -32(%ebp)
movl -36(%ebp), %eax
orl %eax, -32(%ebp)
=>
xorl %edi, %eax
orl -36(%ebp), %eax
mov %eax, -32(%ebp)
This enables the unfolding optimization for a subsequent instruction which will
also eliminate the newly introduced store instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43192 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/TwoAddressInstructionPass.cpp')
0 files changed, 0 insertions, 0 deletions