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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-12-04 00:16:04 +0000 |
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| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-12-04 00:16:04 +0000 |
| commit | 88d11c3a214da464deb05eb17922d633e5af77a1 (patch) | |
| tree | dcc016454a3e8332b8d9f3e22e331a4ab0073158 /lib/Transforms/Utils | |
| parent | 723be602ecdfde30a50c3afe1780575fdf8f0f56 (diff) | |
| download | external_llvm-88d11c3a214da464deb05eb17922d633e5af77a1.zip external_llvm-88d11c3a214da464deb05eb17922d633e5af77a1.tar.gz external_llvm-88d11c3a214da464deb05eb17922d633e5af77a1.tar.bz2 | |
Also attempt trivial coalescing for live intervals that end in a copy.
The coalescer is supposed to clean these up, but when setting up parameters
for a function call, there may be copies to physregs. If the defining
instruction has been LICM'ed far away, the coalescer won't touch it.
The register allocation hint does not always work - when the register
allocator is backtracking, it clears the hints.
This patch takes care of a few more cases that r90163 missed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90502 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils')
0 files changed, 0 insertions, 0 deletions