Commit Graph

481 Commits

Author SHA1 Message Date
Reid Kleckner 5340b279ae [codeview] Add EFLAGS to the list of CodeView register numbers
llvm-svn: 273516
2016-06-22 23:50:19 +00:00
Rafael Espindola 4f1062adb8 Fix a crash when producing COFF.
llvm-svn: 271229
2016-05-30 20:18:53 +00:00
Rafael Espindola 9768d73c74 Move RelaxELFRel out to llvm-mc.
llvm-svn: 271160
2016-05-29 01:11:00 +00:00
Rafael Espindola 52bd330500 Fix production of R_X86_64_GOTPCRELX/R_X86_64_REX_GOTPCRELX.
We were producing R_X86_64_GOTPCRELX for invalid instructions and
sometimes producing R_X86_64_GOTPCRELX instead of
R_X86_64_REX_GOTPCRELX.

llvm-svn: 271118
2016-05-28 15:51:38 +00:00
Rafael Espindola 2d39bb3c6a Simplify and clang-format a table.
llvm-svn: 271112
2016-05-28 11:13:34 +00:00
Rafael Espindola 8c34dd8257 Delete Reloc::Default.
Having an enum member named Default is quite confusing: Is it distinct
from the others?

This patch removes that member and instead uses Optional<Reloc> in
places where we have a user input that still hasn't been maped to the
default value, which is now clear has no be one of the remaining 3
options.

llvm-svn: 269988
2016-05-18 22:04:49 +00:00
Rafael Espindola 712f957cae Simplify handling of hidden stub.
Since r207518 they are printed exactly like non-hidden stubs on x86 and
since r207517 on ARM.

This means we can use a single set for all stubs in those platforms.

llvm-svn: 269776
2016-05-17 16:01:32 +00:00
Tim Northover d2ecbccf27 X86-Darwin: start emitting data-region directives for jump-tables.
The surrounding tools can cope these days, and they were invented for a reason.

llvm-svn: 268437
2016-05-03 21:03:41 +00:00
Craig Topper 477649a4c0 [X86] Remove unused operand from a function and all its callers. NFC
llvm-svn: 267854
2016-04-28 05:58:46 +00:00
Davide Italiano f59b0da654 [MC/ELF] Implement support for GOTPCRELX/REX_GOTPCRELX.
The option to control the emission of the new relocations
is -relax-relocations (blatantly copied from GNU as).
It can't be enabled by default because it breaks relatively
recent versions of ld.bfd/ld.gold (late 2015).

llvm-svn: 267307
2016-04-24 01:03:57 +00:00
Davide Italiano 4652c59568 [MC/ELF] Pass Fixup to getRelocType64.
In preparation for other changes.

llvm-svn: 267300
2016-04-23 22:26:31 +00:00
Mehdi Amini b550cb1750 [NFC] Header cleanup
Removed some unused headers, replaced some headers with forward class declarations.

Found using simple scripts like this one:
clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' | xargs grep -L 'IndexedMap[<]' | xargs grep -n --color=auto 'IndexedMap'

Patch by Eugene Kosov <claprix@yandex.ru>

Differential Revision: http://reviews.llvm.org/D19219

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 266595
2016-04-18 09:17:29 +00:00
Andrey Turetskiy 9df334c28e [X86] Restrict max long nop length for Lakemont.
Restrict the max length of long nops for Lakemont to 7. Experiments on MCU
benchmarks (Dhrystone, Coremark) show that this is the most optimal length.

Differential Revision: http://reviews.llvm.org/D18897

llvm-svn: 265924
2016-04-11 10:07:36 +00:00
Davide Italiano 7aa47094b2 [MC] support TLSDESC and TLSCALL / GNU2 tls dialect
Differential Revision:  http://reviews.llvm.org/D18885

llvm-svn: 265881
2016-04-09 20:32:33 +00:00
Craig Topper 581c0087b9 [X86] Use high bits of return value from getEncoding instead of predicate functions to populate the REX and VEX prefix bits that extend register encodings. NFC
llvm-svn: 262800
2016-03-06 08:12:47 +00:00
Craig Topper faab5c68d4 [X86] Remove unnecessary masking. The assert above it already guaranteed it. NFC
llvm-svn: 262799
2016-03-06 08:12:44 +00:00
Craig Topper 5e038cf589 [X86] Use uint8_t instead of unsigned char as it shortens the code and more explicitly reflects the desired size.
llvm-svn: 262798
2016-03-06 08:12:42 +00:00
Craig Topper 1d3f4aefd6 [X86] Remove unnecessary call to isReg from emitter's DestMem handling for VEX prefix. The operand is always a register. NFC
llvm-svn: 262468
2016-03-02 07:32:45 +00:00
Craig Topper 6a7cd42213 [X86] Make X86MCCodeEmitter::DetermineREXPrefix locate operands more like how VEX prefix handling does.
llvm-svn: 262467
2016-03-02 07:32:43 +00:00
Craig Topper d4dabb3939 [X86] Remove assertion I accidentally left in.
llvm-svn: 262464
2016-03-02 06:35:22 +00:00
Craig Topper a267431fa6 [X86] Be more structured about how we capture the register number when it is encoded in bits 7:4 of the immediate.
For some instructions the register is not the last operand and the immediate handling had to detect this and hardcode the index to find it. It also required CurOp to be pointing at the last operand handled in the Form switch whereas for any instruction it would be pointing at the next operand.

Now we just capture the value in the Form switch when we know exactly where it is and the CurOp pointer can behave normally.

llvm-svn: 262462
2016-03-02 06:06:18 +00:00
Craig Topper cf65c62737 [X86] Use MCPhysReg and uint16_t for static arrays of registers and opcodes respectively should reduce size tiny bit. NFC
llvm-svn: 262458
2016-03-02 04:42:31 +00:00
Craig Topper 073e947f1b [X86] Centralize the masking of TSFlags with FormMask into a variable earlier so we can stop masking in multiple places. NFC
llvm-svn: 262312
2016-03-01 07:15:59 +00:00
Craig Topper 5c8dc5f064 [X86] Localize a temporary variable into the cases its need in. NFC
llvm-svn: 262310
2016-03-01 06:42:48 +00:00
Craig Topper b8c29b4ae9 [X86] Be consistent about using pre/post increment/decrement in nearby code. NFC
llvm-svn: 262309
2016-03-01 06:42:46 +00:00
Craig Topper d40a55064f [X86] Combine some initialization code with variable declaration and comments. NFC
llvm-svn: 262301
2016-03-01 05:42:16 +00:00
Craig Topper a11be0be89 [X86] Use inclusive ranges for XMM/YMM/ZMM registers in is32Extended and isX86_64ExtendedReg. NFC
llvm-svn: 261978
2016-02-26 05:29:35 +00:00
David Majnemer e2ad73759d [CodeView] Describe variables live in x87 registers
We didn't have a mapping from LLVM's x87 floating point registers to
CodeView's encoding.

llvm-svn: 261730
2016-02-24 10:01:24 +00:00
Craig Topper 84f2f18cfd [X86] Minor formatting fix. NFC
llvm-svn: 261515
2016-02-22 08:00:04 +00:00
Hans Wennborg 7c3077ca52 Revert r253557 "Alternative to long nops for X86 CPUs, by Andrey Turetsky"
Turns out the new nop sequences aren't actually nops on x86_64 (PR26554).

llvm-svn: 261365
2016-02-19 21:26:31 +00:00
Reid Kleckner f9c275fe0a [codeview] Describe int local variables using .cv_def_range
Summary:
Refactor common value, scope, and label tracking logic out of DwarfDebug
into a common base class called DebugHandlerBase.

Update an old LLVM IR test case to avoid an assertion in LexicalScopes.

Reviewers: dblaikie, majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D16931

llvm-svn: 260432
2016-02-10 20:55:49 +00:00
Derek Schuff c6d8fd3f54 [MC] Enable eip-relative addressing on x86-64 for X32 ABI
Summary:
Enables eip-based addressing, e.g.,

lea    constant(%eip), %rax
lea    constant(%eip), %eax

in MC, (used for the x32 ABI). EIP-base addressing is also valid in x86_64,
it is left enabled for that architecture as well.

Patch by João Porto

Differential Revision: http://reviews.llvm.org/D16581

llvm-svn: 259528
2016-02-02 17:20:04 +00:00
Benjamin Kramer 391be792f2 One more batch of self-containing headers.
llvm-svn: 258974
2016-01-27 19:29:56 +00:00
Chris Bieneman e49730d4ba Remove autoconf support
Summary:
This patch is provided in preparation for removing autoconf on 1/26. The proposal to remove autoconf on 1/26 was discussed on the llvm-dev thread here: http://lists.llvm.org/pipermail/llvm-dev/2016-January/093875.html

"I felt a great disturbance in the [build system], as if millions of [makefiles] suddenly cried out in terror and were suddenly silenced. I fear something [amazing] has happened."
- Obi Wan Kenobi

Reviewers: chandlerc, grosbach, bob.wilson, tstellarAMD, echristo, whitequark

Subscribers: chfast, simoncook, emaste, jholewinski, tberghammer, jfb, danalbert, srhines, arsenm, dschuff, jyknight, dsanders, joker.eph, llvm-commits

Differential Revision: http://reviews.llvm.org/D16471

llvm-svn: 258861
2016-01-26 21:29:08 +00:00
David Majnemer ce10842036 [MC, COFF] Add .reloc support for WinCOFF
This adds rudimentary support for a few relocations that we will use for
the CodeView debug format.

llvm-svn: 258216
2016-01-19 23:05:27 +00:00
Pete Cooper 835594e627 Delete MCRelocationInfo::createExprForRelocation.
This method has no callers.

Also remove X86ELFRelocationInfo.cpp and X86MachORelocationInfo.cpp
which only existed to provide an implementation of that method.

Ok'd by Rafael and Jim.

llvm-svn: 257859
2016-01-15 02:24:12 +00:00
Rafael Espindola 8340f94df1 Convert a few assert failures into proper errors.
Fixes PR25944.

llvm-svn: 257697
2016-01-13 22:56:57 +00:00
Craig Topper c0453e87dc [X86] Move getX86SubSuperRegisterOrZero to X86MCTargetDesc.cpp so it can be used by AsmParser library without depending on X86CodeGen library.
llvm-svn: 256428
2015-12-25 22:10:08 +00:00
Craig Topper c7277d9485 [X86] Move AVX512 STATIC_ROUNDING enum to X86BaseInfo.h to fix a layering violation in AsmParser.
llvm-svn: 256426
2015-12-25 22:09:49 +00:00
Craig Topper 3453a43da9 [X86] Add missing X86II::MRM_C4, MRM_C5, etc. encodings to getMemoryOperandNo. These aren't used by any instructions, but could be someday. NFC
llvm-svn: 256421
2015-12-25 17:07:30 +00:00
Craig Topper 3fb423ef8b [X86] Minor identation fixes. NFC
llvm-svn: 256419
2015-12-25 17:07:24 +00:00
Asaf Badouh 9a5a83a518 [X86][PKU] Add {RD,WR}PKRU encoding
Differential Revision: http://reviews.llvm.org/D15711

llvm-svn: 256366
2015-12-24 08:25:00 +00:00
David Majnemer 03e2cc3007 [MC, COFF] Support link /incremental conditionally
Today, we always take into account the possibility that object files
produced by MC may be consumed by an incremental linker.  This results
in us initialing fields which vary with time (TimeDateStamp) which harms
hermetic builds (e.g. verifying a self-host went well) and produces
sub-optimal code because we cannot assume anything about the relative
position of functions within a section (call sites can get redirected
through incremental linker thunks).

Let's provide an MCTargetOption which controls this behavior so that we
can disable this functionality if we know a-priori that the build will
not rely on /incremental.

llvm-svn: 256203
2015-12-21 22:09:27 +00:00
Quentin Colombet 25b43f3624 [X86] Add relaxtion logic for SBB instructions.
Prior to this patch, we would wrongly stick to the variant with imm8 encoding
even when the relocation could not fit that size.

rdar://problem/23785506

llvm-svn: 255583
2015-12-15 00:09:23 +00:00
Quentin Colombet 2cb8a51c1f [X86] Add relaxtion logic for ADC instructions.
Prior to this patch, we would wrongly stick to the variant with imm8 encoding
even when the relocation could not fit that size.

rdar://problem/23785506

llvm-svn: 255570
2015-12-14 23:12:40 +00:00
Tim Northover 614e8ff855 X86: produce more friendly errors during MachO relocation handling
llvm-svn: 255036
2015-12-08 18:31:35 +00:00
Craig Topper e5e035a3a8 Replace uint16_t with the MCPhysReg typedef in many places. A lot of physical register arrays already use this typedef.
llvm-svn: 254843
2015-12-05 07:13:35 +00:00
Alexey Bataev b7b82bf33e Alternative to long nops for X86 CPUs, by Andrey Turetsky
Make X86AsmBackend generate smarter nops instead of a bunch of 0x90 for code alignment for CPUs which don't support long nop instructions.
Differential Revision: http://reviews.llvm.org/D14178

llvm-svn: 253557
2015-11-19 11:44:35 +00:00
Oliver Stannard 9be59af3ab [Assembler] Make fatal assembler errors non-fatal
Currently, if the assembler encounters an error after parsing (such as an
out-of-range fixup), it reports this as a fatal error, and so stops after the
first error. However, for most of these there is an obvious way to recover
after emitting the error, such as emitting the fixup with a value of zero. This
means that we can report on all of the errors in a file, not just the first
one. MCContext::reportError records the fact that an error was encountered, so
we won't actually emit an object file with the incorrect contents.

Differential Revision: http://reviews.llvm.org/D14717

llvm-svn: 253328
2015-11-17 10:00:43 +00:00
Douglas Katzman a14039764b Visibly fail if attempting to encode register AH,BH,CH,DH in a REX-prefixed instruction.
Differential Revision: http://reviews.llvm.org/D13316
Fixes PR25003

llvm-svn: 252743
2015-11-11 15:51:16 +00:00