Always starting blocks at the top of their containing loops works, but creates
unnecessarily deep nesting because it makes all blocks in a loop overlap.
Refine the BLOCK placement algorithm to start blocks at nearest common
dominating points instead, which significantly shrinks them and reduces
overlapping.
llvm-svn: 253876
Summary:
This change fixes the SaturatingMultiply<T>() function template to not cause undefined behavior with T=uint16_t.
Thanks to Richard Smith's contribution, it also no longer requires an integer division.
Patch by Richard Smith.
Reviewers: silvas, davidxl
Subscribers: rsmith, davidxl, llvm-commits
Differential Revision: http://reviews.llvm.org/D14845
llvm-svn: 253870
Disable custom handling of signed 32-bit and 64-bit integer divide.
Add test cases for both 32-bit and 64-bit integer overflow crashes.
llvm-svn: 253865
1. move const qualifier out of raw header field type as runtime use of the header
needs to initialze the fields
2. use C style casting for integer types.
llvm-svn: 253844
Duplicate a few common definitions between DFAPacketizer.cpp and
DFAPacketizerEmitter.cpp to avoid including files from CodeGen
in TableGen.
llvm-svn: 253820
ISERT_SUBVECTOR for i1 vectors may be done with shifts, when we insert into the lower part, or into the upper part, on into all-zero vector.
CONCAT_VECTORS uses ISERT_SUBVECTOR.
Differential Revision: http://reviews.llvm.org/D14815
llvm-svn: 253819
In profile runtime implementation for Darwin, Linux and FreeBSD, the
names of sections holding profile control/counter/naming data need
to be known by the runtime in order to locate the start/end of the
data. Moving the name definitions to the common file to specify the
connection.
llvm-svn: 253814
FIXME: This can be reverted several hours later.
r253790 introduced cyclic deps around llvm-tblgen and it was affecting after reverting.
ninja: error: dependency cycle: include/llvm/IR/Attributes.inc -> include/llvm/IR/Attributes.inc.tmp -> bin/llvm-tblgen -> utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/DFAPacketizerEmitter.cpp.o -> include/llvm/IR/Attributes.inc
It may be a ninja's bug.
FYI, renaming DFAPacketizerEmitter.cpp would be useless.
llvm-svn: 253810
Add more complete description of the content and structure
of the template file. Made the comment in C style to be
shared by C runtime. Also enhance the file structure so
that it can included as standalone header for common
definitions.
llvm-svn: 253807
We had two code paths. One would create names like "foo.1" and the other
names like "foo1".
For globals it is important to use "foo.1" to help C++ name demangling.
For locals there is no strong reason to go one way or the other so I
kept the most common mangling (foo1).
llvm-svn: 253804
Summary:
Several fixes to the handling of bitcode files without function summary
sections so that they are skipped during ThinLTO processing in llvm-lto
and the gold plugin when appropriate instead of aborting.
1 Don't assert when trying to add a FunctionInfo that doesn't have
a summary attached.
2 Skip FunctionInfo structures that don't have attached function summary
sections when trying to create the combined function summary.
3 In both llvm-lto and gold-plugin, check whether a bitcode file has
a function summary section before trying to parse the index, and skip
the bitcode file if it does not.
4 Fix hasFunctionSummaryInMemBuffer in BitcodeReader, which had a bug
where we returned to early while looking for the summary section.
Also added llvm-lto and gold-plugin based tests for cases where we
don't have function summaries in the bitcode file. I verified that
either the first couple fixes described above are enough to avoid the
crashes, or fixes 1,3,4. But have combined them all here for added
robustness.
Reviewers: joker.eph
Subscribers: llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D14903
llvm-svn: 253796
MachineInstrBuilder::addDisp can already add an immediate or global address MO with an adjusted offset, this patch adds support for constant pool indices as well.
All remaining MO types still assert - there are a number of other types that could support adjusted offsets but I have no test cases at this time.
Required to fix a regression in D13988 found by Mikael Holmén during stress testing (test case attached).
Differential Revision: http://reviews.llvm.org/D14867
llvm-svn: 253795
Extended DFA tablegen to:
- added "-debug-only dfa-emitter" support to llvm-tblgen
- defined CVI_PIPE* resources for the V60 vector coprocessor
- allow specification of multiple required resources
- supports ANDs of ORs
- e.g. [SLOT2, SLOT3], [CVI_MPY0, CVI_MPY1] means:
(SLOT2 OR SLOT3) AND (CVI_MPY0 OR CVI_MPY1)
- added support for combo resources
- allows specifying ORs of ANDs
- e.g. [CVI_XLSHF, CVI_MPY01] means:
(CVI_XLANE AND CVI_SHIFT) OR (CVI_MPY0 AND CVI_MPY1)
- increased DFA input size from 32-bit to 64-bit
- allows for a maximum of 4 AND'ed terms of 16 resources
- supported expressions now include:
expression => term [AND term] [AND term] [AND term]
term => resource [OR resource]*
resource => one_resource | combo_resource
combo_resource => (one_resource [AND one_resource]*)
Author: Dan Palermo <dpalermo@codeaurora.org>
kparzysz: Verified AMDGPU codegen to be unchanged on all llc
tests, except those dealing with instruction encodings.
Reapply the previous patch, this time without circular dependencies.
llvm-svn: 253793
