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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-04-13 19:06:14 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-04-13 19:06:14 +0000 |
| commit | 20b71e28cc7b33ccadb66737a805e7adb68e9106 (patch) | |
| tree | 8593ed263e1bb5630d6b940dae8c0f120df1ceaf /llvm/lib/CodeGen/MachineLICM.cpp | |
| parent | dd9a25997533d7894081ae11a82a54a593b1cb13 (diff) | |
| download | bcm5719-llvm-20b71e28cc7b33ccadb66737a805e7adb68e9106.tar.gz bcm5719-llvm-20b71e28cc7b33ccadb66737a805e7adb68e9106.zip | |
Teach MachineSinking to handle easy critical edges.
Sometimes it is desirable to sink instructions along a critical edge:
x = ...
if (a && b) ...
else use(x);
The 'a && b' condition creates a critical edge to the else block, but we still
want to sink the computation of x into the block. The else block is dominated by
the parent block, so we are not pushing instructions into new code paths.
llvm-svn: 101165
Diffstat (limited to 'llvm/lib/CodeGen/MachineLICM.cpp')
0 files changed, 0 insertions, 0 deletions
