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Author SHA1 Message Date
Artem Dergachev 2ce1d6faf8 Revert r344197 "[MC][ELF] compute entity size for explicit sections" 
Revert r344206 "[MC][ELF] Fix section_mergeable_size.ll"

They were causing failures on too many important buildbots for too long.
Please revert eagerly if your fix takes more than a couple of hours to land!

llvm-svn: 344278
 2018-10-11 18:43:08 +00:00
Fangrui Song f953ea5fb6 [MC][ELF] Fix section_mergeable_size.ll 
Some targets use %progbits instead of @progbits.

Updating that check with a {{[@%]}}progbits regex to make those bots happy.

llvm-svn: 344206
 2018-10-11 00:08:59 +00:00
Nick Desaulniers 335315697a [MC][ELF] compute entity size for explicit sections 
Summary:
Global variables might declare themselves to be in explicit sections.
Calculate the entity size always to prevent assembler warnings
"entity size for SHF_MERGE not specified" when sections are to be
marked merge-able.

Fixes PR31828.

Reviewers: rnk, echristo

Reviewed By: rnk

Subscribers: llvm-commits, pirama, srhines

Differential Revision: https://reviews.llvm.org/D53056

llvm-svn: 344197
 2018-10-10 22:52:32 +00:00
Christy Lee e94374809e Re-submitting changes in D51550 because it failed to patch. 
Reviewers: javed.absar, trentxintong, courbet

Reviewed By: trentxintong

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D52433

llvm-svn: 342919
 2018-09-24 20:47:12 +00:00
Jonas Devlieghere 64c901d2b1 [MC/Dwarf] Unclamp DWARF linetables format on Darwin. 
In r319995, we fixed the line table format to version 2 on Darwin
because dsymutil didn't yet understand the new format which caused test
failures for the LLDB bots. This has been resolved in the meantime so
there's no reason to keep this limitation.

rdar://problem/35968332

llvm-svn: 342136
 2018-09-13 13:13:50 +00:00
Jonas Devlieghere 49ff4d9041 [DWARF] Unclamp line table version on Darwin for v5 and later. 
On Darwin we pin the DWARF line tables to version 2. Stop doing so for
DWARF v5 and later.

Differential revision: https://reviews.llvm.org/D49381

llvm-svn: 339288
 2018-08-08 21:16:50 +00:00
Piotr Padlewski 5b3db45e8f Implement strip.invariant.group 
Summary:
This patch introduce new intrinsic -
strip.invariant.group that was described in the
RFC: Devirtualization v2

Reviewers: rsmith, hfinkel, nlopes, sanjoy, amharc, kuhar

Subscribers: arsenm, nhaehnle, JDevlieghere, hiraditya, xbolva00, llvm-commits

Differential Revision: https://reviews.llvm.org/D47103

Co-authored-by: Krzysztof Pszeniczny <krzysztof.pszeniczny@gmail.com>
llvm-svn: 336073
 2018-07-02 04:49:30 +00:00
Paul Robinson cc7344aae3 [DWARFv5] Tolerate files not all having an MD5 checksum. 
In some cases, for example when compiling a preprocessed file, the
front-end is not able to provide an MD5 checksum for all files. When
that happens, omit the MD5 checksums from the final DWARF, because
DWARF doesn't have a way to indicate that some but not all files have
a checksum.

When assembling a .s file, and some but not all .file directives
provide an MD5 checksum, issue a warning and don't emit MD5 into the
DWARF.

Fixes PR37623.

Differential Revision: https://reviews.llvm.org/D48135

llvm-svn: 334710
 2018-06-14 13:38:20 +00:00
Shiva Chen 2c864551df [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 
In order to set breakpoints on labels and list source code around
labels, we need collect debug information for labels, i.e., label
name, the function label belong, line number in the file, and the
address label located. In order to keep these information in LLVM
IR and to allow backend to generate debug information correctly.
We create a new kind of metadata for labels, DILabel. The format
of DILabel is

!DILabel(scope: !1, name: "foo", file: !2, line: 3)

We hope to keep debug information as much as possible even the
code is optimized. So, we create a new kind of intrinsic for label
metadata to avoid the metadata is eliminated with basic block.
The intrinsic will keep existing if we keep it from optimized out.
The format of the intrinsic is

llvm.dbg.label(metadata !1)

It has only one argument, that is the DILabel metadata. The
intrinsic will follow the label immediately. Backend could get the
label metadata through the intrinsic's parameter.

We also create DIBuilder API for labels to be used by Frontend.
Frontend could use createLabel() to allocate DILabel objects, and use
insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR.

Differential Revision: https://reviews.llvm.org/D45024

Patch by Hsiangkai Wang.

llvm-svn: 331841
 2018-05-09 02:40:45 +00:00
Piotr Padlewski 5dde809404 Rename invariant.group.barrier to launder.invariant.group 
Summary:
This is one of the initial commit of "RFC: Devirtualization v2" proposal:
https://docs.google.com/document/d/16GVtCpzK8sIHNc2qZz6RN8amICNBtvjWUod2SujZVEo/edit?usp=sharing

Reviewers: rsmith, amharc, kuhar, sanjoy

Subscribers: arsenm, nhaehnle, javed.absar, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D45111

llvm-svn: 331448
 2018-05-03 11:03:01 +00:00
Momchil Velikov c7ff2e9a4f Revert "Fix incorrect choice of callee-saved registers save/restore points (take 2)" 
Revert in order to fix the test to not run when required targets aren't
configured.

llvm-svn: 330193
 2018-04-17 16:29:58 +00:00
Momchil Velikov 24db1257c0 Fix incorrect choice of callee-saved registers save/restore points (take 2) 
Add the accidentally omitted testcase.

Differential revision: https://reviews.llvm.org/D45524

llvm-svn: 330192
 2018-04-17 15:59:06 +00:00
Gerolf Hoflehner 5b4a67af1b [DAGCombiner] Fix for oss-fuzz bug 
llvm-svn: 330178
 2018-04-17 07:22:34 +00:00
Paul Robinson 0195469a23 [DWARFv5] Fuss with asm syntax for conveying MD5 checksum. 
Previously the MD5 option of the .file directive provided the checksum
as a quoted hex string; now it's a normal hex number with 0x prefix,
same as the .octa directive accepts.

Differential Revision: https://reviews.llvm.org/D45459

llvm-svn: 329820
 2018-04-11 15:14:05 +00:00
Simon Pilgrim 23c2182c2b Support generic expansion of ordered vector reduction (PR36732) 
Without the fast math flags, the llvm.experimental.vector.reduce.fadd/fmul intrinsic expansions must be expanded in order.

This patch scalarizes the reduction, applying the accumulator at the start of the sequence: ((((Acc + Scl[0]) + Scl[1]) + Scl[2]) + ) ... + Scl[NumElts-1]

Differential Revision: https://reviews.llvm.org/D45366

llvm-svn: 329585
 2018-04-09 15:44:20 +00:00
Simon Pilgrim 389dc7f0c8 Add additional tests from D45336 
llvm-svn: 329427
 2018-04-06 17:18:44 +00:00
Simon Pilgrim 1e6659c1f0 Add additional tests from D45366 
llvm-svn: 329425
 2018-04-06 17:15:56 +00:00
Paul Robinson 407ff1b1cd Try to fix a couple tests for Windows. 
llvm-svn: 328814
 2018-03-29 18:59:33 +00:00
Paul Robinson b271f31d8d Reapply "[DWARFv5] Emit file 0 to the line table." 
DWARF v5 specifies that the root file (also given in the DW_AT_name
attribute of the compilation unit DIE) should be emitted explicitly to
the line table's list of files.  This makes the line table more
independent of the .debug_info section.
We emit the new syntax only for DWARF v5 and later.

Fixes the bug found by asan. Also XFAIL the new test for Darwin, which
is stuck on DWARF v2, and fix up other tests so they stop failing on
Windows.  Last but not least, don't break "clang -g" of an assembler
file that has .file directives in it.

Differential Revision: https://reviews.llvm.org/D44054

llvm-svn: 328805
 2018-03-29 17:16:41 +00:00
Alexander Potapenko 202f809437 Revert "Reapply "[DWARFv5] Emit file 0 to the line table."" 
This reverts commit r328676.

Commit r328676 broke the -no-integrated-as flag necessary to build Linux kernel with Clang:

$ cat t.c
void foo() {}
$ clang -no-integrated-as   -c  t.c -g
/tmp/t-dcdec5.s: Assembler messages:
/tmp/t-dcdec5.s:8: Error: file number less than one
clang-7.0: error: assembler command failed with exit code 1 (use -v to see invocation)

llvm-svn: 328699
 2018-03-28 12:36:46 +00:00
Paul Robinson 07480bd177 Reapply "[DWARFv5] Emit file 0 to the line table." 
DWARF v5 specifies that the root file (also given in the DW_AT_name
attribute of the compilation unit DIE) should be emitted explicitly to
the line table's list of files.  This makes the line table more
independent of the .debug_info section.

Fixes the bug found by asan. Also XFAIL the new test for Darwin, which
is stuck on DWARF v2, and fix up other tests so they stop failing on
Windows.  Last but not least, don't break "clang -g" of an assembler
file that has .file directives in it.

Differential Revision: https://reviews.llvm.org/D44054

llvm-svn: 328676
 2018-03-27 22:40:34 +00:00
Clement Courbet 6d047b70a4 [MergeICmps] Re-land 324317 "Enable the MergeICmps Pass by default." 
Now that PR36557 is fixed.

llvm-svn: 327840
 2018-03-19 13:37:04 +00:00
Alexander Kornienko e12a48bcc0 Revert "Reapply "[DWARFv5] Emit file 0 to the line table."" 
This reverts commit r326839.

r326839 breaks assembly file parsing:

$ cat q.c
void g() {}
$ clang -S q.c -g
$ clang -g -c q.s
q.s:9:2: error: file number already allocated
     .file   1 "/tmp/test" "q.c"
     ^

llvm-svn: 326902
 2018-03-07 16:27:44 +00:00
Paul Robinson 4428e90efa Reapply "[DWARFv5] Emit file 0 to the line table." 
Fixes the bug found by asan. Also XFAIL the new test for Darwin,
which is stuck on DWARF v2, and fix up other tests so they stop
failing on Windows.

llvm-svn: 326839
 2018-03-06 22:37:45 +00:00
Paul Robinson 732e443bb9 Revert "[DWARFv5] Emit file 0 to the line table." 
Caused an asan failure.

This reverts commit d54883f081186cdcce74e6f98cfc0438579ec019.
aka r326758

llvm-svn: 326762
 2018-03-06 03:15:21 +00:00
Paul Robinson d5069ba3da [DWARFv5] Emit file 0 to the line table. 
DWARF v5 specifies that the root file (also given in the DW_AT_name
attribute of the compilation unit DIE) should be emitted explicitly to
the line table's list of files.  This makes the line table more
independent of the .debug_info section.

Differential Revision: https://reviews.llvm.org/D44054

llvm-svn: 326758
 2018-03-06 01:59:56 +00:00
Clement Courbet c6638c813b [MergeICmps] Revert 324317 "Enable the MergeICmps Pass by default." 
While working on PR36557.

llvm-svn: 326575
 2018-03-02 14:34:49 +00:00
Scott Linder c16b975ac8 [DebugInfo] Add remaining files to r325970 
Add files which I missed in the original check-in

llvm-svn: 325973
 2018-02-23 23:13:18 +00:00
Scott Linder 16c7bdaf32 [DebugInfo] Support DWARF v5 source code embedding extension 
In DWARF v5 the Line Number Program Header is extensible, allowing values with
new content types. In this extension a content type is added,
DW_LNCT_LLVM_source, which contains the embedded source code of the file.

Add new optional attribute for !DIFile IR metadata called source which contains
source text. Use this to output the source to the DWARF line table of code
objects. Analogously extend METADATA_FILE in Bitcode and .file directive in ASM
to support optional source.

Teach llvm-dwarfdump and llvm-objdump about the new values. Update the output
format of llvm-dwarfdump to make room for the new attribute on file_names
entries, and support embedded sources for the -source option in llvm-objdump.

Differential Revision: https://reviews.llvm.org/D42765

llvm-svn: 325970
 2018-02-23 23:01:06 +00:00
Sander de Smalen d01cb72f7e Made test dbg_value_fastisel.ll specific to AArch64 fast-isel. 
Some buildbots failed on this test (rL325438) because they don't
build all targets. I set the triple to aarch64 and moved the test
to test/CodeGen/AArch64/fast-isel-dbg-value.ll.

llvm-svn: 325440
 2018-02-17 17:43:24 +00:00
Sander de Smalen 47952b0c03 [DebugInfo][FastISel] Fix dropping dbg.value() 
Summary:
https://llvm.org/PR36263 shows that when compiling at -O0 a dbg.value()
instruction (that remains from an original dbg.declare()) is dropped
by FastISel. Since FastISel selects instructions by iterating a basic
block backwards, it drops the dbg.value if one of its operands is not
yet instantiated by a previously selected instruction.

Instead of calling 'lookUpRegForValue()' we can call 'getRegForValue()'
instead that will insert a placeholder for the operand to be filled in
when continuing the instruction selection.

Reviewers: aprantl, dblaikie, probinson

Reviewed By: aprantl

Subscribers: llvm-commits, dstenb, JDevlieghere

Differential Revision: https://reviews.llvm.org/D43386

llvm-svn: 325438
 2018-02-17 16:42:54 +00:00
Francis Visoiu Mistrih 39ec2e95ae [CodeGen] Unify the syntax of MBB successors in MIR and -debug output 
Instead of:

Successors according to CFG: %bb.6(0x12492492 / 0x80000000 = 14.29%)

print:

successors: %bb.6(0x12492492); %bb.6(14.29%)
llvm-svn: 324685
 2018-02-09 00:10:31 +00:00
Paul Robinson ceafcd41cf [DWARFv5] Fix dumper to show the file table starts at index 0. 
Emitting the correct (root of compilation) file at index 0 will be
posted for review later; I wanted to get this minor change out of the
way first.

llvm-svn: 324669
 2018-02-08 23:08:02 +00:00
Francis Visoiu Mistrih da89d1812a [CodeGen] Print MachineBasicBlock labels using MIR syntax in -debug output 
Instead of:

%bb.1: derived from LLVM BB %for.body

print:

bb.1.for.body:

Also use MIR syntax for MBB attributes like "align", "landing-pad", etc.

llvm-svn: 324563
 2018-02-08 05:02:00 +00:00
Clement Courbet 10003e31f4 [MergeICmps] Re-commit rL324317 "Enable the MergeICmps Pass by default." 
With fixes from rL324341.

Original commit message:

[MergeICmps] Enable the MergeICmps Pass by default.

Summary: Now that PR33325 is fixed, this should always improve the generated code.

Reviewers: spatel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D42793

llvm-svn: 324465
 2018-02-07 09:58:55 +00:00
Clement Courbet 333be329c4 Revert "[MergeICmps] Enable the MergeICmps Pass by default." 
Breaks clang-ppc64be-linux-multistage buildbot.

This reverts commit 515bab711f308c2e8299c49dd8c84ea6a2e0b60e.

llvm-svn: 324319
 2018-02-06 08:40:18 +00:00
Clement Courbet 7d09780fa2 [MergeICmps] Enable the MergeICmps Pass by default. 
Summary: Now that PR33325 is fixed, this should always improve the generated code.

Reviewers: spatel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D42793

llvm-svn: 324317
 2018-02-06 07:20:33 +00:00
Paul Robinson 0a22709f06 [DWARF] Regularize dumping strings from line tables. 
The major visible difference here is that in line-table dumps,
directory and file names are wrapped in double-quotes; previously,
directory names got single quotes and file names were not quoted at
all.

The improvement in this patch is that when a DWARF v5 line table
header has indirect strings, in a verbose dump these will all have
their section[offset] printed as well as the name itself.  This
matches the format used for dumping strings in the .debug_info
section.

Differential Revision: https://reviews.llvm.org/D42802

llvm-svn: 324270
 2018-02-05 20:43:15 +00:00
Jonas Paulsson 9cee52732f Move new test from Generic to SystemZ. 
A few build bots failed with r323042 because they are not configured to
build the SystemZ target.

llvm-svn: 323044
 2018-01-20 16:57:06 +00:00
Jonas Paulsson 7ad28863fb [SelectionDAG] Fix codegen of vector stores with non byte-sized elements. 
This was completely broken, but hopefully fixed by this patch.

In cases where it is needed, a vector with non byte-sized elements is stored
by extracting, zero-extending, shift:ing and or:ing the elements into an
integer of the same width as the vector, which is then stored.

Review: Eli Friedman, Ulrich Weigand
https://reviews.llvm.org/D42100#inline-369520
https://bugs.llvm.org/show_bug.cgi?id=35520

llvm-svn: 323042
 2018-01-20 16:05:10 +00:00
Daniel Neilson 1e68724d24 Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1) 
Summary:
 This is a resurrection of work first proposed and discussed in Aug 2015:
   http://lists.llvm.org/pipermail/llvm-dev/2015-August/089384.html
and initially landed (but then backed out) in Nov 2015:
   http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151109/312083.html

 The @llvm.memcpy/memmove/memset intrinsics currently have an explicit argument
which is required to be a constant integer. It represents the alignment of the
dest (and source), and so must be the minimum of the actual alignment of the
two.

 This change is the first in a series that allows source and dest to each
have their own alignments by using the alignment attribute on their arguments.

 In this change we:
1) Remove the alignment argument.
2) Add alignment attributes to the source & dest arguments. We, temporarily,
   require that the alignments for source & dest be equal.

 For example, code which used to read:
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 100, i32 4, i1 false)
will now read
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %dest, i8* align 4 %src, i32 100, i1 false)

 Downstream users may have to update their lit tests that check for
@llvm.memcpy/memmove/memset call/declaration patterns. The following extended sed script
may help with updating the majority of your tests, but it does not catch all possible
patterns so some manual checking and updating will be required.

s~declare void @llvm\.mem(set|cpy|move)\.p([^(]*)\((.*), i32, i1\)~declare void @llvm.mem\1.p\2(\3, i1)~g
s~call void @llvm\.memset\.p([^(]*)i8\(i8([^*]*)\* (.*), i8 (.*), i8 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i8(i8\2* \3, i8 \4, i8 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i16\(i8([^*]*)\* (.*), i8 (.*), i16 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i16(i8\2* \3, i8 \4, i16 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i32\(i8([^*]*)\* (.*), i8 (.*), i32 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i32(i8\2* \3, i8 \4, i32 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i64\(i8([^*]*)\* (.*), i8 (.*), i64 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i64(i8\2* \3, i8 \4, i64 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i128\(i8([^*]*)\* (.*), i8 (.*), i128 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i128(i8\2* \3, i8 \4, i128 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i8\(i8([^*]*)\* (.*), i8 (.*), i8 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i8(i8\2* align \6 \3, i8 \4, i8 \5, i1 \7)~g
s~call void @llvm\.memset\.p([^(]*)i16\(i8([^*]*)\* (.*), i8 (.*), i16 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i16(i8\2* align \6 \3, i8 \4, i16 \5, i1 \7)~g
s~call void @llvm\.memset\.p([^(]*)i32\(i8([^*]*)\* (.*), i8 (.*), i32 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i32(i8\2* align \6 \3, i8 \4, i32 \5, i1 \7)~g
s~call void @llvm\.memset\.p([^(]*)i64\(i8([^*]*)\* (.*), i8 (.*), i64 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i64(i8\2* align \6 \3, i8 \4, i64 \5, i1 \7)~g
s~call void @llvm\.memset\.p([^(]*)i128\(i8([^*]*)\* (.*), i8 (.*), i128 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i128(i8\2* align \6 \3, i8 \4, i128 \5, i1 \7)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i8\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i8 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i8(i8\3* \4, i8\5* \6, i8 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i16\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i16 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i16(i8\3* \4, i8\5* \6, i16 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i32\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i32 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i32(i8\3* \4, i8\5* \6, i32 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i64\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i64 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i64(i8\3* \4, i8\5* \6, i64 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i128\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i128 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i128(i8\3* \4, i8\5* \6, i128 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i8\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i8 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i8(i8\3* align \8 \4, i8\5* align \8 \6, i8 \7, i1 \9)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i16\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i16 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i16(i8\3* align \8 \4, i8\5* align \8 \6, i16 \7, i1 \9)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i32\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i32 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i32(i8\3* align \8 \4, i8\5* align \8 \6, i32 \7, i1 \9)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i64\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i64 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i64(i8\3* align \8 \4, i8\5* align \8 \6, i64 \7, i1 \9)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i128\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i128 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i128(i8\3* align \8 \4, i8\5* align \8 \6, i128 \7, i1 \9)~g

 The remaining changes in the series will:
Step 2) Expand the IRBuilder API to allow creation of memcpy/memmove with differing
   source and dest alignments.
Step 3) Update Clang to use the new IRBuilder API.
Step 4) Update Polly to use the new IRBuilder API.
Step 5) Update LLVM passes that create memcpy/memmove calls to use the new IRBuilder API,
        and those that use use MemIntrinsicInst::[get|set]Alignment() to use
        getDestAlignment() and getSourceAlignment() instead.
Step 6) Remove the single-alignment IRBuilder API for memcpy/memmove, and the
        MemIntrinsicInst::[get|set]Alignment() methods.

Reviewers: pete, hfinkel, lhames, reames, bollu

Reviewed By: reames

Subscribers: niosHD, reames, jholewinski, qcolombet, jfb, sanjoy, arsenm, dschuff, dylanmckay, mehdi_amini, sdardis, nemanjai, david2050, nhaehnle, javed.absar, sbc100, jgravelle-google, eraman, aheejin, kbarton, JDevlieghere, asb, rbar, johnrusso, simoncook, jordy.potman.lists, apazos, sabuasal, llvm-commits

Differential Revision: https://reviews.llvm.org/D41675

llvm-svn: 322965
 2018-01-19 17:13:12 +00:00
Paul Robinson b22d170caf XFAIL a test on Darwin, line-table stuck on DWARF 2 
llvm-svn: 322430
 2018-01-13 01:39:30 +00:00
Paul Robinson 1879cb0b42 Try to fix more bots after r322391 
llvm-svn: 322400
 2018-01-12 20:54:45 +00:00
Paul Robinson d138088c2f Add toothpicks to test from r322391 
llvm-svn: 322394
 2018-01-12 19:58:35 +00:00
Paul Robinson 612e89d74f [DWARFv5] CodeGen support for MD5 file checksums 
Pass MD5 checksums through from IR to assembly/object files.
After this, getting Clang to compute the MD5 should be the last step
to supporting MD5 in the DWARF v5 line table header.

Differential Revision: https://reviews.llvm.org/D41926

llvm-svn: 322391
 2018-01-12 19:17:50 +00:00
Francis Visoiu Mistrih 25528d6de7 [CodeGen] Unify MBB reference format in both MIR and debug output 
As part of the unification of the debug format and the MIR format, print
MBB references as '%bb.5'.

The MIR printer prints the IR name of a MBB only for block definitions.

* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g'
* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g'
* find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g'
* grep -nr 'BB#' and fix

Differential Revision: https://reviews.llvm.org/D40422

llvm-svn: 319665
 2017-12-04 17:18:51 +00:00
Serge Guelton 24386867b8 Support generic lowering of vector bswap 
llvm-svn: 319419
 2017-11-30 11:06:22 +00:00
Rong Xu 3573d8da36 [CodeGen] Peel off the dominant case in switch statement in lowering 
This patch peels off the top case in switch statement into a branch if the
probability exceeds a threshold. This will help the branch prediction and
avoids the extra compares when lowering into chain of branches.

Differential Revision: http://reviews.llvm.org/D39262

llvm-svn: 318202
 2017-11-14 21:44:09 +00:00
Dan Gohman 2c74fe977d Add an @llvm.sideeffect intrinsic 
This patch implements Chandler's idea [0] for supporting languages that
require support for infinite loops with side effects, such as Rust, providing
part of a solution to bug 965 [1].

Specifically, it adds an `llvm.sideeffect()` intrinsic, which has no actual
effect, but which appears to optimization passes to have obscure side effects,
such that they don't optimize away loops containing it. It also teaches
several optimization passes to ignore this intrinsic, so that it doesn't
significantly impact optimization in most cases.

As discussed on llvm-dev [2], this patch is the first of two major parts.
The second part, to change LLVM's semantics to have defined behavior
on infinite loops by default, with a function attribute for opting into
potential-undefined-behavior, will be implemented and posted for review in
a separate patch.

[0] http://lists.llvm.org/pipermail/llvm-dev/2015-July/088103.html
[1] https://bugs.llvm.org/show_bug.cgi?id=965
[2] http://lists.llvm.org/pipermail/llvm-dev/2017-October/118632.html

Differential Revision: https://reviews.llvm.org/D38336

llvm-svn: 317729
 2017-11-08 21:59:51 +00:00
Clement Courbet 063bed9baf re-land [ExpandMemCmp] Split ExpandMemCmp from CodeGen into its own pass." 
Fix undefined references: ExpandMemCmp belongs to CodeGen/, not Scalar/.

llvm-svn: 317318
 2017-11-03 12:12:27 +00:00