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Author SHA1 Message Date
Hal Finkel
84cd524ee9 [PowerPC] Improve instruction selection bit-permuting operations (64-bit) 
This is the second installment of improvements to instruction selection for "bit
permutation" instruction sequences. r224318 added logic for instruction
selection for 32-bit bit permutation sequences, and this adds lowering for
64-bit sequences. The 64-bit sequences are more complicated than the 32-bit
ones because:
  a) the 64-bit versions of the 32-bit rotate-and-mask instructions
     work by replicating the lower 32-bits of the value-to-be-rotated into the
     upper 32 bits -- and integrating this into the cost modeling for the various
     bit group operations is non-trivial
  b) unlike the 32-bit instructions in 32-bit mode, the rotate-and-mask instructions
     cannot, in one instruction, specify the
     mask starting index, the mask ending index, and the rotation factor. Also,
     forming arbitrary 64-bit constants is more complicated than in 32-bit mode
     because the number of instructions necessary is value dependent.

Plus, support for 'late masking' was added: it is sometimes more efficient to
treat the overall value as if it had no mandatory zero bits when planning the
bit-group insertions, and then mask them in at the very end. Unfortunately, as
the structure of the bit groups is different in the two cases, the more
feasible implementation technique was to generate both instruction sequences,
and then pick the shorter one.

And finally, we now generate reasonable code for i64 bswap:

        rldicl 5, 3, 16, 0
        rldicl 4, 3, 8, 0
        rldicl 6, 3, 24, 0
        rldimi 4, 5, 8, 48
        rldicl 5, 3, 32, 0
        rldimi 4, 6, 16, 40
        rldicl 6, 3, 48, 0
        rldimi 4, 5, 24, 32
        rldicl 5, 3, 56, 0
        rldimi 4, 6, 40, 16
        rldimi 4, 5, 48, 8
        rldimi 4, 3, 56, 0

vs. what we used to produce:

        li 4, 255
        rldicl 5, 3, 24, 40
        rldicl 6, 3, 40, 24
        rldicl 7, 3, 56, 8
        sldi 8, 3, 8
        sldi 10, 3, 24
        sldi 12, 3, 40
        rldicl 0, 3, 8, 56
        sldi 9, 4, 32
        sldi 11, 4, 40
        sldi 4, 4, 48
        andi. 5, 5, 65280
        andis. 6, 6, 255
        andis. 7, 7, 65280
        sldi 3, 3, 56
        and 8, 8, 9
        and 4, 12, 4
        and 9, 10, 11
        or 6, 7, 6
        or 5, 5, 0
        or 3, 3, 4
        or 7, 9, 8
        or 4, 6, 5
        or 3, 3, 7
        or 3, 3, 4

which is 12 instructions, instead of 25, and seems optimal (at least in terms
of code size).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225056 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-01-01 02:53:29 +00:00
Michael Gottesman
69338a993e Add 2x constructors for TinyPtrVector, one that takes in one elemenet and the other that takes in an ArrayRef<EltTy> 
Currently one can only construct an empty TinyPtrVector. These are just missing
elements of the API.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225055 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 23:33:24 +00:00
Michael Gottesman
4ba553c0f3 Add a SmallMapVector class that is a MapVector with a Map of SmallDenseMap and a Vector of SmallVector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225054 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 23:33:21 +00:00
Michael Gottesman
735f1df049 Add an ArrayRef upcasting constructor from ArrayRef<U*> -> ArrayRef<T*> where T is a base of U. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225053 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 23:33:18 +00:00
Sanjay Patel
28650b8ec2 InstCombine: fsub nsz 0, X ==> fsub nsz -0.0, X 
Some day the backend may handle instruction-level fast math flags and make
this transform unnecessary, but it's still better practice to use the canonical
representation of fneg when possible (use a -0.0).

This is a partial fix for PR20870 ( http://llvm.org/bugs/show_bug.cgi?id=20870 ).
See also http://reviews.llvm.org/D6723.

Differential Revision: http://reviews.llvm.org/D6731



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225050 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 22:14:05 +00:00
Rafael Espindola
8093abb745 Add r224985 back with a fix. 
The issues was that AArch64 has additional restrictions on when local
relocations can be used. We have to take those into consideration when
deciding to put a L symbol in the symbol table or not.

Original message:

Remove doesSectionRequireSymbols.

In an assembly expression like

bar:
.long L0 + 1

the intended semantics is that bar will contain a pointer one byte past L0.

In sections that are merged by content (strings, 4 byte constants, etc), a
single position in the section doesn't give the linker enough information.
For example, it would not be able to tell a relocation must point to the
end of a string, since that would look just like the start of the next.

The solution used in ELF to use relocation with symbols if there is a non-zero
addend.

In MachO before this patch we would just keep all symbols in some sections.

This would miss some cases (only cstrings on x86_64 were implemented) and was
inefficient since most relocations have an addend of 0 and can be represented
without the symbol.

This patch implements the non-zero addend logic for MachO too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225048 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 17:19:34 +00:00
Colin LeMahieu
f5943bd9a9 Reverting 225045 and 225043 and XFAIL multiline.ll on hexagon 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225047 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 17:14:35 +00:00
Rafael Espindola
85419e7e3b Add a test for the recent compiler-rt build failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225046 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 16:58:05 +00:00
Colin LeMahieu
d1d270816b [Hexagon] Removing assertion to appease buildbot until I can reproduce the problem 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225045 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 16:20:00 +00:00
Rafael Espindola
937e781f49 Revert "Remove doesSectionRequireSymbols." 
This reverts commit r224985.

I am investigating why it made an Apple bot unhappy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225044 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 16:06:48 +00:00
Colin LeMahieu
e883ee78f2 [Hexagon] Changing an llvm_unreachable to an assertion and returning 0. Relocations aren't implemented yet but we don't need to abort for this in release builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225043 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 15:57:38 +00:00
Craig Topper
c602b726a8 [X86] Update disassembler tests for absolute move instructions to check the encodings. This provides testing for r225036. 64-bit mode is still broken. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225037 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 07:24:23 +00:00
Craig Topper
51f423ff30 [X86] Fix disassembly of absolute moves to work correctly in 16 and 32-bit modes with all 4 combinations of OpSize and AdSize prefixes being present or not. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225036 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 07:07:31 +00:00
Craig Topper
e8ffd99e4e [x86] Simplify detection of jcxz/jecxz/jrcxz in disassembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225035 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 07:07:11 +00:00
David Majnemer
0f77ccd6bb InstCombine: try to transform A-B < 0 into A < B 
We are allowed to move the 'B' to the right hand side if we an prove
there is no signed overflow and if the comparison itself is signed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225034 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 04:21:41 +00:00
Alexey Samsonov
c0319dd9c2 Revert "merge consecutive stores of extracted vector elements" 
This reverts commit r224611. This change causes crashes
in X86 DAG->DAG Instruction Selection.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225031 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 00:40:28 +00:00
Colin LeMahieu
96c631b191 [Hexagon] Adding accumulating add/sub, doubleword logic-not variants, doubleword bitfield extract, word parity, accumulating multiplies with saturation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225024 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-31 00:08:34 +00:00
David Blaikie
855324b9de Fix a test case to not depend on asm comment syntax, so as to be portable 
Too many different comment characters - instead of trying to account for
them all, instead disable the comments and just check for end-of-line
instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225020 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 23:33:55 +00:00
David Blaikie
6fcdb2681c Generalize even further, for ARM comment syntax (@) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225019 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 23:23:58 +00:00
Colin LeMahieu
cb5c5f5934 [Hexagon] Adding double-logic on predicate instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225018 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 23:22:39 +00:00
David Blaikie
2e05c34ba6 Generalize test case to handle different asm syntax (# or // comments) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225017 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 23:21:57 +00:00
Colin LeMahieu
6026119d9f [Hexagon] Adding newvalue compare and jumps. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225015 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 23:04:21 +00:00
Peter Collingbourne
3a071284e0 RTDyldMemoryManager.cpp: Make the reference to __morestack weak. 
This fixes the DSO build for now. Eventually we should develop some
other mechanism to make this work correctly with DSOs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225014 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 22:52:33 +00:00
David Blaikie
1d68fc5021 DebugInfo: Omit is_stmt from line table entries on the same line. 
GCC does this for non-zero discriminators and since GCC doesn't produce
column info, that was the only place it comes up there. For LLVM, since
we can emit discriminators and/or column info, it makes more sense to
invert the condition and just test for changes in line number.

This should resolve at least some of the GDB 7.5 test suite failures
created by recent Clang changes that increase the location fidelity
(which, since Clang defaults to including column info on Linux by
default created a bunch of cases that confused GDB).

In theory we could do this better/differently by grouping actual source
statements together in a similar manner to the way lexical scopes are
handled but given that GDB isn't really in a position to consume that (&
users are probably somewhat used to different lines being different
'statements') this seems the safest and cheapest change. (I'm concerned
that doing this 'right' would bloat the debugloc data even further -
something Duncan's working hard to address)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225011 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 22:47:13 +00:00
Colin LeMahieu
a7940ef0e4 [Hexagon] Adding postincrement register newvalue stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225010 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 22:34:08 +00:00
Colin LeMahieu
df2531486d [Hexagon] Removing old newvalue store variants. Adding postincrement immediate newvalue stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225009 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 22:28:31 +00:00
Zoran Jovanovic
25547ee83c [mips][microMIPS] Relocate with symbol for micromips symbols 
Differential Revision: http://reviews.llvm.org/D6796


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225008 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 22:04:16 +00:00
Colin LeMahieu
ab63a4c95e [Hexagon] Adding indexed store new-value variants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225007 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 22:00:26 +00:00
Colin LeMahieu
3fa758981d [Hexagon] Adding indexed store of immediates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225006 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 21:01:38 +00:00
Colin LeMahieu
65971bbfd7 [Hexagon] Adding indexed stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225005 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 20:42:23 +00:00
Peter Collingbourne
d8ae3e1fee x86_64: Fix calls to __morestack under the large code model. 
Under the large code model, we cannot assume that __morestack lives within
2^31 bytes of the call site, so we cannot use pc-relative addressing. We
cannot perform the call via a temporary register, as the rax register may
be used to store the static chain, and all other suitable registers may be
either callee-save or used for parameter passing. We cannot use the stack
at this point either because __morestack manipulates the stack directly.

To avoid these issues, perform an indirect call via a read-only memory
location containing the address.

This solution is not perfect, as it assumes that the .rodata section
is laid out within 2^31 bytes of each function body, but this seems to
be sufficient for JIT.

Differential Revision: http://reviews.llvm.org/D6787

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225003 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 20:05:19 +00:00
Kostya Serebryany
dd890d5c5e [asan] change _sanitizer_cov_module_init to accept int* instead of int** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224999 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 19:29:28 +00:00
Michael Kuperstein
08c26613e1 [COFF] Don't try to add quotes to already quoted linker directives 
If a linker directive is already quoted, don't try to quote it again, otherwise it creates a mess.
This pops up in places like:
#pragma comment(linker,"\"/foo bar'\"")

Differential Revision: http://reviews.llvm.org/D6792

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224998 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 19:23:48 +00:00
Colin LeMahieu
88e5659aaf [Hexagon] Adding reg-reg indexed load forms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224997 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 18:58:47 +00:00
Peter Collingbourne
7d099f9e6a The __morestack function is only available on i386 and x86_64 architectures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224994 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 18:22:06 +00:00
Peter Collingbourne
8919b82605 Make the __morestack function available to the JIT memory manager under Linux. 
This function's implementation lives in libgcc, a static library, so we need
to expose it explicitly, like the other such functions.

Differential Revision: http://reviews.llvm.org/D6788

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224993 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 18:06:52 +00:00
Colin LeMahieu
aa4172e1d8 [Hexagon] Dropping old combine instructions without encodings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224992 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 17:53:54 +00:00
Colin LeMahieu
066f43435a [Hexagon] Adding compare byte/halfword reg-reg/reg-imm forms. Adding compare to general register reg-imm form. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224991 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 17:39:24 +00:00
Colin LeMahieu
af9e1c79a5 [Hexagon] Updating constant extender def, adding alu-not instructions, compare to general register, and inverted compares. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224989 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 15:44:17 +00:00
Elena Demikhovsky
cc794daa67 Some code improvements in Masked Load/Store. 
No functional changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224986 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 14:28:14 +00:00
Rafael Espindola
65300b95e6 Remove doesSectionRequireSymbols. 
In an assembly expression like

bar:
.long L0 + 1

the intended semantics is that bar will contain a pointer one byte past L0.

In sections that are merged by content (strings, 4 byte constants, etc), a
single position in the section doesn't give the linker enough information.
For example, it would not be able to tell a relocation must point to the
end of a string, since that would look just like the start of the next.

The solution used in ELF to use relocation with symbols if there is a non-zero
addend.

In MachO before this patch we would just keep all symbols in some sections.

This would miss some cases (only cstrings on x86_64 were implemented) and was
inefficient since most relocations have an addend of 0 and can be represented
without the symbol.

This patch implements the non-zero addend logic for MachO too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224985 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 13:13:27 +00:00
Elena Demikhovsky
96341cbb36 reverted prev commit (it was a mistake) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224984 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 10:17:21 +00:00
Elena Demikhovsky
3c0b55af9f v 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224983 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 10:13:38 +00:00
Philip Reames
e46577f2b2 Add IRBuilder routines for gc.statepoints, gc.results, and gc.relocates 
Nothing particularly interesting, just adding infrastructure for use by in tree users and out of tree users.

Note: These were extracted out of a working frontend, but they have not been well tested in isolation.

Differential Revision: http://reviews.llvm.org/D6807



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224981 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 05:55:58 +00:00
Rafael Espindola
d5dd993855 Simplify test a bit. 
It looks like the original intent was to check which symbols were created.
With macho-dump the sections were being checked just to match which symbol
was in which section.

llvm-objdump prints the section a symbol is in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224980 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 05:09:17 +00:00
Peter Zotov
21a0fa44e1 [OCaml] Fix bitrot in tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224979 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 03:24:14 +00:00
Peter Zotov
91bf887d6d [lit] Make config.llvm_lib_dir available on cmake, too. 
The OCaml tests require config.llvm_lib_dir to determine
the OCaml package search path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224978 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 03:24:11 +00:00
Peter Zotov
a2cb627a04 [OCaml] [cmake] Use LLVM_LIBRARY_DIR instead of LLVM_LIBRARY_OUTPUT_INTDIR. 
The latter variable is internal.

Original patch by Ramkumar Ramachandra <artagnon@gmail.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224977 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 03:24:07 +00:00
Craig Topper
f8207ac705 Testcases for r224939. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224976 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 02:35:56 +00:00
Rafael Espindola
dbeada5a92 Convert test to llvm-readobj. NFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224973 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-30 01:34:06 +00:00