llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-14 17:34:41 +00:00

History

Jakob Stoklund Olesen 443443cc83 Avoid hoisting spills when looking at a copy from another register that is also

about to be spilled.

This can only happen when two extra snippet registers are included in the spill,
and there is a copy between them. Hoisting the spill creates problems because
the hoist will mark the copy for later dead code elimination, and spilling the
second register will turn the copy into a spill.

<rdar://problem/9420853>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131192 91177308-0d34-0410-b5e6-96231b3b80d8

2011-05-11 18:25:10 +00:00

Analysis

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