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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2013-06-12 20:42:33 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2013-06-12 20:42:33 +0000 |
| commit | 736a947bdca65e9bcc1550772fd2120a1bcd47a8 (patch) | |
| tree | ea96de43a836bdc53eed5f6eee4f77be747eb0e0 /clang/lib/Frontend/CompilerInstance.cpp | |
| parent | 4fcb8c260eb0976496e931ee091462b527fc1971 (diff) | |
| download | bcm5719-llvm-736a947bdca65e9bcc1550772fd2120a1bcd47a8.tar.gz bcm5719-llvm-736a947bdca65e9bcc1550772fd2120a1bcd47a8.zip | |
Reapply r183721, reverted in r183776, with a fix for a bug in the former (we
were lacking ExprWithCleanups nodes in some cases where the new approach to
lifetime extension needed them).
Original commit message:
Rework IR emission for lifetime-extended temporaries. Instead of trying to walk
into the expression and dig out a single lifetime-extended entity and manually
pull its cleanup outside the expression, instead keep a list of the cleanups
which we'll need to emit when we get to the end of the full-expression. Also
emit those cleanups early, as EH-only cleanups, to cover the case that the
full-expression does not terminate normally. This allows IR generation to
properly model temporary lifetime when multiple temporaries are extended by the
same declaration.
We have a pre-existing bug where an exception thrown from a temporary's
destructor does not clean up lifetime-extended temporaries created in the same
expression and extended to automatic storage duration; that is not fixed by
this patch.
llvm-svn: 183859
Diffstat (limited to 'clang/lib/Frontend/CompilerInstance.cpp')
0 files changed, 0 insertions, 0 deletions
