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Commit Graph

12 Commits

Author SHA1 Message Date
Nick Lewycky
b162446cda When removing a function from the function set and adding it to deferred, we
could end up removing a different function than we intended because it was
functionally equivalent, then end up with a comparison of a function against
itself in the next round of comparisons (the one in the function set and the
one on the deferred list). To fix this, I introduce a choice in the form of
comparison for ComparableFunctions, either normal or "pointer only" used to
find exact Function*'s in lookups.

Also add some debugging statements.

llvm-svn: 125180
2011-02-09 06:32:02 +00:00
Nick Lewycky
864a35740a Fix surprising missed optimization in mergefunc where we forgot to consider
that relationships like "i8* null" is equivalent to "i32* null".

llvm-svn: 124368
2011-01-27 08:38:19 +00:00
Nick Lewycky
b20b284b35 Teach mergefunc how to emit aliases safely again -- but keep it turned it off
for now. It's controlled by the HasGlobalAliases variable which is not attached
to any flag yet.

llvm-svn: 124182
2011-01-25 08:56:50 +00:00
Nick Lewycky
1b4a83430b Arrays and vectors with different numbers of elements are not equivalent.
llvm-svn: 108517
2010-07-16 06:31:12 +00:00
Dan Gohman
205b641954 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.

llvm-svn: 81537
2009-09-11 18:01:28 +00:00
Dan Gohman
c95df8b6d8 Use opt -S instead of piping bitcode output through llvm-dis.
llvm-svn: 81257
2009-09-08 22:34:10 +00:00
Dan Gohman
8d84372836 Change these tests to feed the assembly files to opt directly, instead
of using llvm-as, now that opt supports this.

llvm-svn: 81226
2009-09-08 16:50:01 +00:00
Nick Lewycky
1e36649f95 Given two identical weak functions, produce one internal function and two weak
thunks.

llvm-svn: 73230
2009-06-12 15:56:56 +00:00
Nick Lewycky
cc239d7680 This test is wrong. If you have two weak functions F and G you can't make
either one call the other since either one can be replaced at link time, and
they need to be independent.

llvm-svn: 73225
2009-06-12 13:24:41 +00:00
Anton Korobeynikov
169173000f Fix tests not to emit IR output
llvm-svn: 58729
2008-11-04 23:02:39 +00:00
Nick Lewycky
49abbde699 Changes from Duncan's review:
* merge two weak functions by making them both alias a third non-weak fn
 * don't reimplement CallSite::hasArgument
 * whitelist the safe linkage types

llvm-svn: 58568
2008-11-02 16:46:26 +00:00
Nick Lewycky
15a23d029c Add a new MergeFunctions pass. It finds identical functions and merges them.
This triggers only 60 times in llvm-test (look at .llvm.bc, not .linked.rbc)
and so it probably wont be turned on by default. Also, may of those are likely
to go away when PR2973 is fixed.

llvm-svn: 58557
2008-11-02 05:52:50 +00:00