This patch removes all weight-related interfaces from BPI and replace
them by probability versions. With this patch, we won't use edge weight
anymore in either IR or MC passes. Edge probabilitiy is a better
representation in terms of CFG update and validation.
Differential revision: http://reviews.llvm.org/D15519
llvm-svn: 256263
Summary:
These were deprecated 11 months ago when a generic
llvm.experimental.gc.result intrinsic, which works for all types, was added.
Reviewers: sanjoy, reames
Subscribers: sanjoy, chenli, llvm-commits
Differential Revision: http://reviews.llvm.org/D15719
llvm-svn: 256262
This is generating a SIGSEGV somewhere around 1 in 10 runs on OS X.
Skip the whole test to avoid testbot noise until we can get the
SIGSEGV addressed.
Tracking with:
https://llvm.org/bugs/show_bug.cgi?id=25924
llvm-svn: 256257
Summary:
Previously, RS4GC crashed in CreateGCRelocates() because it assumed
that every base is also in the array of live variables, which isn't true if a
live variable has a constant base.
This change fixes the crash by making sure CreateGCRelocates() won't try to
relocate a live variable with a constant base. This would be unnecessary
anyway because anything with a constant base won't move.
Reviewers: reames
Subscribers: llvm-commits, sanjoy
Differential Revision: http://reviews.llvm.org/D15556
llvm-svn: 256252
This is a recommit of r256004 which was reverted in r256160. The issue was the
incorrect promotion for half and byte loads transformed into mov instructions.
This fix will replace half and byte type loads only with bit field extracts.
Original commit message:
This change promotes load instructions which directly read from stored by
replacing them with mov instructions. If the store is wider than the load,
the load will be replaced with a bitfield extract.
For example :
STRWui %W1, %X0, 1
%W0 = LDRHHui %X0, 3
becomes
STRWui %W1, %X0, 1
%W0 = UBFMWri %W1, 16, 31
llvm-svn: 256249
initializers. For now, only use it for 20 items or more. Otherwise,
clang-format formats these one-per-line and thus increases the vertical
code size a lot.
llvm-svn: 256246
None of the documentation mentions that the entries are packed structs
and also none of the other implementation I found pack them.
Differential revision: http://reviews.llvm.org/D15715
llvm-svn: 256244
If there are two pointers passed to an atomic Builtin,
Clang doesn't allow the second (non-atomic) one to be qualified
with an address space.
Remove this restriction by recording the address space of passed pointers
in atomics type diagnostics.
llvm-svn: 256243
This commit adds SHF_ALLOC and SHF_EXECINSTR section flags to
`.text.__cxa_end_cleanup` section. This fixes a link error when we are
using integrated-as and `ld.gold` (with `-Wl,--gc-sections` and
`-Wl,--fatal-warnings`.)
Detailed Explanation:
1. There might be some problem with LLVM integrated-as. It is not
emitting any section flags for text sections. (This will be fixed in
an independent commit.)
2. `ld.gold` will skip the external symbols in the section without
SHF_ALLOC. This is the reason why `.text.__cxa_end_cleanup_impl`
section is discarded even though it is referenced by
`__cxa_end_cleanup()`.
This commit workaround the problem by specifying the section flags
explicitly.
Fix http://llvm.org/PR21292
llvm-svn: 256241
OpenMP 4.5 adds 'depend(sink:vec)' in 'ordered' directive for doacross loop synchronization. Patch adds parsing and semantic analysis for this clause.
llvm-svn: 256238
In r256077, I added printing for DIExpressions in DEBUG_VALUE comments,
but neglected to handle DW_OP_bit_piece operands. Thanks to
Mikael Holmen and Joerg Sonnenberger for spotting this.
llvm-svn: 256236
InitMCObjectFileInfo was trying to override the triple in awkward ways.
For example, a triple specifying COFF but not Windows was forced as ELF.
This makes it easy for internal invariants to get violated, such as
those which triggered PR25912.
This fixes PR25912.
llvm-svn: 256226
This uses the same criteria used in CFE's CodeGenPGO to identify hot and cold
callees and uses values of inlinehint-threshold and inlinecold-threshold
respectively as the thresholds for such callees.
Differential Revision: http://reviews.llvm.org/D15245
llvm-svn: 256222
This patch adds an option, -safe-stack-no-tls, for using normal
storage instead of thread-local storage for the unsafe stack pointer.
This can be useful when SafeStack is applied to an operating system
kernel.
http://reviews.llvm.org/D15673
Patch by Michael LeMay.
llvm-svn: 256221
The linker requires that a comdat section must be associated
with a another comdat section that precedes it. This
means the comdat section's name needs to use the profile name
var's name.
Patch tested by Johan Engelen.
llvm-svn: 256220
We clarify that certain code is only executed if LSchedule is != nullptr.
Previously some of these functions have been executed, but they only passed
a nullptr through. This caused some confusion when reading the code.
llvm-svn: 256209
Besides improving the documentation and the code we now assert in case the input
is invalid (N < 0) and also do not any more return a nullptr in case USet is
empty. This should make the code more readable.
llvm-svn: 256208
Cong Hou