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| author | Bob Wilson <bob.wilson@apple.com> | 2009-09-05 01:19:16 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2009-09-05 01:19:16 +0000 |
| commit | da4ae4be5b2b8fa35ef989e548530833428f36bf (patch) | |
| tree | c52591d2d1555f1ff541da9ca54accc9a68118ad /lib/Transforms/Utils/BasicBlockUtils.cpp | |
| parent | bd1d6a8ce1197de640df52e1da2e63e8ce8d8705 (diff) | |
Stabilize the order of live intervals in the priority_queue used by the
linear scan reg alloc. This fixes a problem I ran into where extracting
a function from a larger file caused the generated code to change (masking
the problem I was trying to debug) because the allocator behaved differently.
This changes the results for two X86 regression checks. stack-color-with-reg
is improved, with one less instruction, but pr3495 is worse, with one more
copy. As far as I can tell, these tests were just getting lucky or unlucky,
so I've changed the expected results.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81060 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils/BasicBlockUtils.cpp')
0 files changed, 0 insertions, 0 deletions