When an assembler local symbol is used but not defined in a module, a
Darwin assembler wants to issue a diagnostic to that effect.
rdar://9559714
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Dan noted that this would work on the case shown on the commit message. I think
the case that was failing was a bb ending with a redundant conditional jump:
...
jne foo
foo:
...
I was unable to find any such case in the tests or in a debug build of clang,
so I will revert this part of the patch and watch the bots.
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Measure the worst case number of probes for a miss instead of the less
conservative number of probes required for an insertion.
Lower the limit to < 6 probes worst case.
This doubles the size of the ARM and X86 hash tables, other targets are
unaffected. LiveVariables runs 12% faster with this change.
<rdar://problem/9598545>
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types (with power of two types such as 8,16,32 .. 512).
Fix a bug in the integer promotion of bitcast nodes. Enable integer expanding
only if the target of the conversion is an integer (when the type action is
scalarize).
Add handling to the legalization of vector load/store in cases where the saved
vector is integer-promoted.
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cache prefetch and now that the info from "prefetch" to "ARMPreload" is present,
only add a testcase for PLI.
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sharp all or nothing transition when one extra predecessor was added. Now
we still test first ones for merging.
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spartan right now, but I plan to encode more information in this enum to improve
the correctness and reliability of SRoA. At least this first pass makes it
possible to make VectorTy an actual VectorType.
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The logic for reserving R4 for use as a scratch needs to match that for
actually using it. Also, it's not necessary for immediate <=508, so adjust
the value checked.
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might overflow. Re-typing the alloca to a larger type (e.g. double)
hoists a shift into the alloca, potentially exposing overflow in the
expression. rdar://problem/9265821
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intrinsics. In fact, we'll optimize a bitcast to that when possible. Detect it
when looking for the lifetime intrinsics.
No test case, noticed by inspection.
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In particular, don't spill dirty registers only to satisfy a hint. It is
not worth it.
The attached test case provides an example where the fast allocator
would spill a register when other registers are available.
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