When a python script is run, by default it creates the bytecode file if the directory is writable, and this ‘pollutes’ source folders.
From python's help:
-B Don’t write .py[co] files on import. See also PYTHONDONTWRITEBYTECODE.
Patch by Pere Mato (D30604)!
llvm-svn: 298603
Summary: ThinLTO will annotate the CFG twice. If the branch weight is set by the first annotation, we should not set the branch weight again in the second annotation because the first annotation is more accurate as there is less optimization that could affect debug info accuracy.
Reviewers: tejohnson, davidxl
Reviewed By: tejohnson
Subscribers: mehdi_amini, aprantl, llvm-commits
Differential Revision: https://reviews.llvm.org/D31228
llvm-svn: 298602
Summary:
By manipulating a local variable in the loop, when the loop can
be optimized away (due to no non-trivial destructors), this lets
it be fully optimized away and we modify the __end_ separately.
This results in a substantial improvement in the generated code.
Prior to this change, this would be generated (on x86_64):
movq (%rdi), %rdx
movq 8(%rdi), %rcx
cmpq %rdx, %rcx
je LBB2_2
leaq -12(%rcx), %rax
subq %rdx, %rax
movabsq $-6148914691236517205, %rdx ## imm = 0xAAAAAAAAAAAAAAAB
mulq %rdx
shrq $3, %rdx
notq %rdx
leaq (%rdx,%rdx,2), %rax
leaq (%rcx,%rax,4), %rax
movq %rax, 8(%rdi)
And after:
movq (%rdi), %rax
movq %rax, 8(%rdi)
This brings this in line with what other implementations do.
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D25241
llvm-svn: 298601
Summary: Cleanup some remnants of code from when the X86FixupBWInsts pass did both forward liveness analysis and backward liveness analysis.
Reviewers: MatzeB, myatsina, DavidKreitzer
Reviewed By: MatzeB
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D31264
llvm-svn: 298599
This patch fixes decoding of size and position for DINSM
and DINSU instructions.
Differential Revision: https://reviews.llvm.org/D31072
llvm-svn: 298593
After r297760, __isOSVersionAtLeast in compiler-rt loads the CoreFoundation
symbols at runtime. This means that `@available` will always fail when used in a
binary without a linked CoreFoundation.
This commit forces Clang to emit a reference to a CoreFoundation symbol when
`@available` is used to ensure that linking will fail when CoreFoundation isn't
linked with the build product.
rdar://31039592
Differential Revision: https://reviews.llvm.org/D30977
llvm-svn: 298588
that became supported after r297019
The commit r297019 expanded the performSelector ObjC method family heuristic
to ensure that -Wobjc-unsafe-perform-selector covers all performSelector
variations. However, this made the -Warc-performSelector-leaks too noisy, as
that warning produces mostly false positives since the selector is unknown.
This commit reverts the ObjC method family heuristics introduced in r297019.
This ensures that -Warc-performSelector-leaks isn't too noisy. The commit still
preserves the coverage of -Wobjc-unsafe-perform-selector.
rdar://31124629
llvm-svn: 298587
Up until now, vpmovm2 instruction described its destination operand size
by the source operand size. This patch adds new pattern for the vpmovm2
instruction. The node describes new expansion of the destination (from
{128|256} to 512).
Differential Revision: https://reviews.llvm.org/D30654
llvm-svn: 298586
Summary:
We currently do a linear scan through all of the Alignments array entries anytime getAlignmentInfo is called. I noticed while profiling compile time on a -O2 opt run that this function can be called quite frequently and was showing about as about 1% of the time in callgrind.
This patch puts the Alignments array into a sorted order by type and then by bitwidth. We can then do a binary search. And use the sorted nature to handle the special cases for INTEGER_ALIGN. Some of this is modeled after the sorting/searching we do for pointers already.
This reduced the time spent in this routine by about 2/3 in the one compilation I was looking at.
We could maybe improve this more by using a DenseMap to cache the results, but just sorting was easy and didn't require extra data structure. And I think it made the integer handling simpler.
Reviewers: sanjoy, davide, majnemer, resistor, arsenm, mehdi_amini
Reviewed By: arsenm
Subscribers: arsenm, llvm-commits
Differential Revision: https://reviews.llvm.org/D31232
llvm-svn: 298579
This requires collectign all symbols referenced in the linker script
and adding them to symbol table as undefined symbol.
Differential Revision: https://reviews.llvm.org/D31147
llvm-svn: 298577
I honestly do not understand this part of code as it is too tangled.
What I'm trying now is to carefully disentangle it by transforming
code without changing meaining to see if I can improve overall
readability.
llvm-svn: 298576
This is to improve compatibility with GNU Libtool that expect
/supported targets:.* elf/ in a message for the -help option.
Differential Revision: https://reviews.llvm.org/D31208
llvm-svn: 298568
Summary:
This patch adopts the recent changes that renamed `set_exception(exception_pointer)` to `unhandled_exception()`.
Additionally `unhandled_exception()` is now required, and so an error is emitted when exceptions are enabled but the promise type does not provide the member.
When exceptions are disabled a warning is emitted instead of an error, The warning notes that the `unhandled_exception()` function is required when exceptions are enabled.
Reviewers: rsmith, GorNishanov, aaron.ballman, majnemer
Reviewed By: GorNishanov
Subscribers: mehdi_amini, cfe-commits
Differential Revision: https://reviews.llvm.org/D30859
llvm-svn: 298565
Summary:
This removes the 'remapTypeIndices' method on every TypeRecord class. My
original idea was that this would be the beginning of some kind of
generic entry point that would enumerate all of the TypeIndices inside
of a TypeRecord, so that we could write generic graph algorithms for
them without duplicating the knowledge of which fields are type index
fields everywhere. This never happened, and nothing else uses this
method. I need to change the API to deal with merging into IPI streams,
so let's move it into the file that uses it first.
Reviewers: zturner, ruiu
Reviewed By: zturner, ruiu
Subscribers: mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D31267
llvm-svn: 298564
Paul Osmialowski