r83391 was completely broken since Twines keep references to their inputs, and
some of the inputs were temporaries. Here's a real fix for the miscompilation.
Thanks to sabre for pointing out the problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@83859 91177308-0d34-0410-b5e6-96231b3b80d8
Change the marker byte for stubs from 0xcd to 0xce (another form of
interrupt instruction, which shouldn't arise any other way). 0xcd is
also used by JITMemoryManager to initialize the buffer to garbage,
which means it could appear following a noreturn call even when
that is not a stub, confusing X86CompilationCallback2. PR 4929.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81981 91177308-0d34-0410-b5e6-96231b3b80d8
Don't pull a load through a callseq_start if the load's chain
has multiple uses, as one of the other uses may be on a path
to a different node above the callseq_start, because that
leads to a cyclic graph. This problem is exposed when
-combiner-global-alias-analysis is used. This fixes PR4880.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81978 91177308-0d34-0410-b5e6-96231b3b80d8
If we've pushed registers onto the stack, but aren't adjusting the stack pointer
(i.e., there are no local variables and stuff), we still need to output FDE
information for the pushed registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81973 91177308-0d34-0410-b5e6-96231b3b80d8
Make the augmentation size and next set of bytes agree on size,
and make the reference pointer size as it should be.
Fixes an abort on a testcase derived from libunwind's personality
test in 64-bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81701 91177308-0d34-0410-b5e6-96231b3b80d8
Make TypeBuilder's result depend on the LLVMContext it's passed.
TypeBuilder was using a local static variable to cache its result. This made it
ignore changes in its LLVMContext argument and always return a type constructed
from the argument to the first call.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81694 91177308-0d34-0410-b5e6-96231b3b80d8
When remat'ing and destination virtual register has a sub-register index. Make sure the sub-register class matches the register class of the remat'ed instruction definition register class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81270 91177308-0d34-0410-b5e6-96231b3b80d8
fix PR4767, a crash because fp stackifier visited blocks in
depth first order, so it wouldn't process unreachable blocks.
When compiling at -O0, late dead block elimination isn't done
and the bad instructions got to isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81268 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed a test that ensures the LocalRewriter does not attempt to
avoid reloads by reusing clobbered registers.
This was causing issues in 256.bzip2 when compiled with PIC for
a while (starting at r78217), though the problem has since been masked.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81032 91177308-0d34-0410-b5e6-96231b3b80d8
Opaque types didn't work if llvm_is_multithreaded().
AlwaysOpaqueTy is always NULL at this point, and it causes an assertion failure.
Fix it by using the just constructed tmp instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81030 91177308-0d34-0410-b5e6-96231b3b80d8
fix PR4848 an infinite loop when indexing down through a recursive gep
and we get the original pointer type. This doesn't mean that we're
at the first pointer being indexed. Correct the predicate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81028 91177308-0d34-0410-b5e6-96231b3b80d8
