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| author | Tim Northover <tnorthover@apple.com> | 2013-05-29 19:32:06 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2013-05-29 19:32:06 +0000 |
| commit | aae0fa998af0f65221d7b98630162be6d88f05dc (patch) | |
| tree | 32f70d885b5b98aac7a135eb1d8dd0b00d32f5e0 /tools/lto/LTOModule.cpp | |
| parent | 88c744083d6cf5f4810c1e9fe457a212bb24d432 (diff) | |
| download | llvm-aae0fa998af0f65221d7b98630162be6d88f05dc.tar.gz llvm-aae0fa998af0f65221d7b98630162be6d88f05dc.tar.bz2 llvm-aae0fa998af0f65221d7b98630162be6d88f05dc.tar.xz | |
Teach ReMaterialization to be more cunning about subregisters
This allows rematerialization during register coalescing to handle
more cases involving operations like SUBREG_TO_REG which might need to
be rematerialized using sub-register indices.
For example, code like:
v1(GPR64):sub_32 = MOVZ something
v2(GPR64) = COPY v1(GPR64)
should be convertable to:
v2(GPR64):sub_32 = MOVZ something
but previously we just gave up in places like this
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182872 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/lto/LTOModule.cpp')
0 files changed, 0 insertions, 0 deletions