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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-10 22:27:31 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-10 22:27:31 +0000 |
| commit | bc55bfde033d67329f9d5dd3ec5e1fbf665297ad (patch) | |
| tree | 1820b0e5d27ab6c4fb288bbbc53bdba9f1ea58be /clang/lib/Parse/ParseCXXInlineMethods.cpp | |
| parent | a0042acd3be06dcc3267b61b9a4f6311299b39ca (diff) | |
| download | bcm5719-llvm-bc55bfde033d67329f9d5dd3ec5e1fbf665297ad.tar.gz bcm5719-llvm-bc55bfde033d67329f9d5dd3ec5e1fbf665297ad.zip | |
Add a proper if-conversion cost model.
Detect when there is not enough available ILP, so if-conversion can't
speculate instructions for free.
Compute the lengthening of the critical path when inserting a select
instruction that depends on the condition as well as both sides of the
if.
Reject conversions that would stretch the critical path by more than
half a mispredict penalty.
llvm-svn: 161713
Diffstat (limited to 'clang/lib/Parse/ParseCXXInlineMethods.cpp')
0 files changed, 0 insertions, 0 deletions
