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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-06-12 03:05:52 +0000 |
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| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-06-12 03:05:52 +0000 |
| commit | d2b4713e53a7667fa51b5aad17337bc6142d157d (patch) | |
| tree | e58795813841cb8dbb1aeae63fdbb2153118e2b6 /llvm/lib/Transforms/Utils/InlineFunction.cpp | |
| parent | 7ed40cbded2fb1d0d4a1aa4521c79d95888b815d (diff) | |
| download | llvm-d2b4713e53a7667fa51b5aad17337bc6142d157d.zip llvm-d2b4713e53a7667fa51b5aad17337bc6142d157d.tar.gz llvm-d2b4713e53a7667fa51b5aad17337bc6142d157d.tar.bz2 | |
Compute lists of sub-regs, super-regs, and overlapping regs.
Besides moving structural computations to CodeGenRegisters.cpp, this
also well-defines the order of these lists:
- Sub-register lists come from a pre-order traversal of the graph
defined by the SubRegs lists in the .td files.
- Super-register lists are topologically ordered so no register comes
before any of its sub-registers. When the sub-register graph is not a
tree, independent super-registers appear in numerical order.
- Lists of overlapping registers are ordered according to register
number.
This reverses the order of the super-regs lists, but nobody was
depending on that. The previous order of the overlaps lists was odd, and
it may have depended on the precise behavior of std::stable_sort.
The old computations are still there, but will be removed shortly.
llvm-svn: 132881
Diffstat (limited to 'llvm/lib/Transforms/Utils/InlineFunction.cpp')
0 files changed, 0 insertions, 0 deletions