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| author | Jeffrey Yasskin <jyasskin@google.com> | 2009-05-26 18:27:15 +0000 |
|---|---|---|
| committer | Jeffrey Yasskin <jyasskin@google.com> | 2009-05-26 18:27:15 +0000 |
| commit | 7d287cb7ed0188f85fa4730f3e3c079aff5457d9 (patch) | |
| tree | 096ddc7d556d8a046c7cb1418e931c62495dd9b1 /clang/lib/AST/Decl.cpp | |
| parent | fed44d215eefdc241237cd92b0dc899d16cb968d (diff) | |
| download | bcm5719-llvm-7d287cb7ed0188f85fa4730f3e3c079aff5457d9.tar.gz bcm5719-llvm-7d287cb7ed0188f85fa4730f3e3c079aff5457d9.zip | |
LiveVariables::VarInfo contains an AliveBlocks BitVector, which has as many
entries as there are basic blocks in the function. LiveVariables::getVarInfo
creates a VarInfo struct for every register in the function, leading to
quadratic space use. This patch changes the BitVector to a SparseBitVector,
which doesn't help the worst-case memory use but does reduce the actual use in
very long functions with short-lived variables.
llvm-svn: 72426
Diffstat (limited to 'clang/lib/AST/Decl.cpp')
0 files changed, 0 insertions, 0 deletions
