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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-10-05 18:31:00 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-10-05 18:31:00 +0000 |
| commit | 2c3bef8a15c84ad8ef043f8e8ff08ffe1b96720b (patch) | |
| tree | b753bc9ba8336d1bad10e025d072808316b8880f /lib/Support/MemoryBuffer.cpp | |
| parent | 42be280a288b2bfc5f072ea83802088e0fb073e7 (diff) | |
Simplify INSERT_SUBREG emission.
The register class created by INSERT_SUBREG and SUBREG_TO_REG must be
legal and support the SubIdx sub-registers.
The new getSubClassWithSubReg() hook can compute that.
This may create INSERT_SUBREG instructions defining a larger register
class than the sub-register being inserted. That is OK,
RegisterCoalescer will constrain the register class as needed when it
eliminates the INSERT_SUBREG instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141198 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/MemoryBuffer.cpp')
0 files changed, 0 insertions, 0 deletions