It extremely breaks builds when optimization is enabled. Twine should not hold temporary objects.
By the way, I might feel sad if I saw "i786-" "i1586-" or "iF86-".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142055 91177308-0d34-0410-b5e6-96231b3b80d8
from config.h, it discovers the triple based on the execution environment.
Patch by Aaron Ballman <aaron@aaronballman.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142046 91177308-0d34-0410-b5e6-96231b3b80d8
I rewrote the algorithm a while back so it doesn't require map lookup,
but neglected to change the data structure. This was caught by
llvm-gcc self host, not because there's anything special about
llvm-gcc, but because it is the only test for nondeterminism we
currently have. Unit tests don't work well for everything; we should
always try to have a nondeterminism stress test running.
Fixes PR11133: llvm-gcc self host .o mismatch after enable-iv-rewrite=false
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This isn't put into the 'clear()' method because the information needs to stick
around (at least for a little bit) after the selection DAG is built.
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It really doesn't, but when r141929 removed the hasSideEffects flag from
this instruction, it caused miscompilations. I am guessing that it got
moved across a stack pointer update.
Also clear isRematerializable after checking that this instruction is
in fact never rematerialized in the nightly test suite.
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rdar://10288916 is tracking this fix.
In the past, instcombine and other passes were promoting alloca alignment past
the natural alignment, resulting in dynamic stack realignment. Lang's work now
prevents this from happening (LLVM commit r141599). Now that this really
shouldn't happen report a fatal error rather than silently generate bad code.
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The callee-saved registers cannot be live across an invoke call because the
control flow may continue along the exceptional edge. When this happens, all of
the callee-saved registers are no longer valid.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142018 91177308-0d34-0410-b5e6-96231b3b80d8
OCaml's int is limited to 31 bits on 32-bit architectures, so use Int32
explicitly.
Also add an unpack_attr, and {function,param,instr}_attr functions to read
the attributes.
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Pass the correct jobs and threads information to the builder.
We were underutilizing the number of jobs and threads specified
by the user.
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could be arguments, for example.
No testcase because this is a bug-fix broken out of a larger optimization patch.
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TableGen infers unmodeled side effects on instructions without a
pattern. Fix some instruction definitions where that was overlooked.
Also raise an error if a rematerializable instruction has unmodeled side
effects. That doen't make any sense.
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TableGen will mark any pattern-less instruction as having unmodeled side
effects. This is extra bad for V_SET0 which gets rematerialized a lot.
This was part of the cause for PR11125, but the real bug was fixed
in r141923.
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When spilling around an instruction with a dead def, remember to add a
value number for the def.
The missing value number wouldn't normally create problems since there
would be an incoming live range as well. However, due to another bug
we could spill a dead V_SET0 instruction which doesn't read any values.
The missing value number caused an empty live range to be created which
is dangerous since it doesn't interfere with anything.
This fixes part of PR11125.
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