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128 Commits

Author SHA1 Message Date
NAKAMURA Takumi b66d255595 X86Subtarget.h: Assume "x86_64-cygwin", though it has not been released yet, to appease test/CodeGen/X86 on cygwin. 
llvm-svn: 135564
 2011-07-20 04:02:20 +00:00
Evan Cheng 60fc0fca5c Restore old behavior. Always auto-detect features unless cpu or features are specified. 
llvm-svn: 134757
 2011-07-08 22:30:25 +00:00
Evan Cheng 13bcc6c1c7 Add Mode64Bit feature and sink it down to MC layer. 
llvm-svn: 134641
 2011-07-07 21:06:52 +00:00
Evan Cheng 1a72add615 Compute feature bits at time of MCSubtargetInfo initialization. 
llvm-svn: 134606
 2011-07-07 07:07:08 +00:00
Evan Cheng c9c090d7a5 Rename XXXGenSubtarget.inc to XXXGenSubtargetInfo.inc for consistency. 
llvm-svn: 134281
 2011-07-01 22:36:09 +00:00
Evan Cheng 0d639a28aa Rename TargetSubtarget to TargetSubtargetInfo for consistency. 
llvm-svn: 134259
 2011-07-01 21:01:15 +00:00
Evan Cheng 54b68e3432 - Added MCSubtargetInfo to capture subtarget features and scheduling 
itineraries.
- Refactor TargetSubtarget to be based on MCSubtargetInfo.
- Change tablegen generated subtarget info to initialize MCSubtargetInfo
  and hide more details from targets.

llvm-svn: 134257
 2011-07-01 20:45:01 +00:00
Evan Cheng fe6e405e8c Fix the ridiculous SubtargetFeatures API where it implicitly expects CPU name to 
be the first encoded as the first feature. It then uses the CPU name to look up
features / scheduling itineray even though clients know full well the CPU name
being used to query these properties.

The fix is to just have the clients explictly pass the CPU name!

llvm-svn: 134127
 2011-06-30 01:53:36 +00:00
Evan Cheng 3a0c5e52ff Remove TargetOptions.h dependency from X86Subtarget. 
llvm-svn: 133726
 2011-06-23 17:54:54 +00:00
Daniel Dunbar 2b9b0e3748 ADT/Triple: Move a variety of clients to using isOSDarwin() and isOSWindows() 
predicates.

llvm-svn: 129816
 2011-04-19 21:14:45 +00:00
Daniel Dunbar 100455a3c8 Target/X86: Eliminate uses of getDarwinVers(). 
llvm-svn: 129813
 2011-04-19 21:04:12 +00:00
Daniel Dunbar 44b530369d Target/X86: Add getTargetTriple() accessor. 
llvm-svn: 129812
 2011-04-19 21:01:47 +00:00
Roman Divacky e8a93fe8f0 Stack alignment is 16 bytes on FreeBSD/i386 too. 
llvm-svn: 126226
 2011-02-22 17:30:05 +00:00
Duncan Sands bda7175a43 The stack should be 16 byte aligned on 32 bit solaris. Patch by Yuri. 
llvm-svn: 126130
 2011-02-21 17:37:17 +00:00
NAKAMURA Takumi 4c14a5cc2c Triple::MinGW64 is deprecated and removed. We can use Triple::MinGW32 generally. 
No one uses *-mingw64. mingw-w64 is represented as {i686|x86_64}-w64-mingw32. In llvm side, i686 and x64 can be treated as similar way.

llvm-svn: 125747
 2011-02-17 12:24:17 +00:00
NAKAMURA Takumi 0544fe7287 Fix whitespace. 
llvm-svn: 125746
 2011-02-17 12:23:50 +00:00
Evan Cheng d22a4a1fd6 Patches to build EFI with Clang/LLVM. By Carl Norum. 
llvm-svn: 124639
 2011-02-01 01:14:13 +00:00
Nate Begeman 8b08f5232b Formalize the notion that AVX and SSE are non-overlapping extensions from the compiler's point of view. Per email discussion, we either want to always use VEX-prefixed instructions or never use them, and are taking "HasAVX" to mean "Always use VEX". Passing -mattr=-avx,+sse42 should serve to restore legacy SSE support when desirable. 
llvm-svn: 121439
 2010-12-10 00:26:57 +00:00
Benjamin Kramer 2f489236ab Add patterns for the x86 popcnt instruction. 
- Also adds a new POPCNT subtarget feature that is currently enabled if the target
  supports SSE4.2 (nehalem) or SSE4A (barcelona).

llvm-svn: 120917
 2010-12-04 20:32:23 +00:00
Rafael Espindola 66e08d43d2 Jim Asked us to move DataLayout on ARM back to the most specialized classes. Do 
so and also change X86 for consistency.

Investigating if this can be improved a bit.

llvm-svn: 115469
 2010-10-03 18:59:45 +00:00
NAKAMURA Takumi ea639aa11f X86Subtarget.h: Fix Cygwin's TD. 
llvm-svn: 114297
 2010-09-18 19:50:42 +00:00
Anton Korobeynikov a5a645559c Properly emit __chkstk call instead of __alloca on non-mingw windows targets. 
Patch by Cameron Esfahani!

llvm-svn: 112902
 2010-09-02 23:03:46 +00:00
Bruno Cardoso Lopes 09dc24beac Add x86 CLMUL (Carry-less multiplication) cpu feature 
llvm-svn: 109206
 2010-07-23 01:17:51 +00:00
Eric Christopher d429846eca Have the X86 backend use Triple instead of a string and some enums. 
llvm-svn: 107625
 2010-07-05 19:26:33 +00:00
Dan Gohman dc53f1cb5c FastISel doesn't yet handle callee-pop functions. 
To support this, move IsCalleePop from X86ISelLowering to X86Subtarget.

llvm-svn: 104866
 2010-05-27 18:43:40 +00:00
Evan Cheng 050df1b8de Enable i16 to i32 promotion by default. 
llvm-svn: 102493
 2010-04-28 08:30:49 +00:00
Evan Cheng 9c8cd8c061 isel (i32 anyext i16) as insert_subreg when 16-bit ops are being promoted. 
llvm-svn: 101979
 2010-04-21 01:47:12 +00:00
Eric Christopher 2ef63183a5 Separate out the AES-NI instructions from the SSE4.2 instructions. Add 
a new subtarget option for AES and check for the support.  Add "westmere"
line of processors and add AES-NI support to the core i7.

Add a couple of TODOs for information I couldn't verify.

llvm-svn: 100231
 2010-04-02 21:54:27 +00:00
Evan Cheng 738b0f9ec7 Nehalem unaligned memory access is fast. 
llvm-svn: 100089
 2010-04-01 05:58:17 +00:00
Evan Cheng bf724b9ee0 Turning off post-ra scheduling for x86. It isn't a consistent win. 
llvm-svn: 98810
 2010-03-18 06:55:42 +00:00
Chris Lattner a30d4ce194 add support for pentium class CPUs which do not have cmov, 
PR4841.  Patch by Craig Smith!

llvm-svn: 98496
 2010-03-14 18:31:44 +00:00
Mikhail Glushenkov abd56bde0e 80-col violations/trailing whitespace. 
llvm-svn: 97427
 2010-02-28 22:54:30 +00:00
Anton Korobeynikov c3c357006e Setup correct data layout to match gcc's expectations on mingw32. 
llvm-svn: 95981
 2010-02-12 15:28:56 +00:00
Duncan Sands 0067d6bbbe Fix typo. 
llvm-svn: 93235
 2010-01-12 08:30:46 +00:00
Duncan Sands fd75e12954 Tweak commit 91745, which changed target data for both Mingw and Cygwin, 
to not touch Cygwin: the change caused llvm-gcc build failures due to
long double getting the wrong size.  Patch by Aaron Gray.

llvm-svn: 93234
 2010-01-12 08:21:07 +00:00
David Greene 206351a1ff Implement a feature (-vector-unaligned-mem) to allow targets to 
ignore alignment requirements for SIMD memory operands.  This
is useful on architectures like the AMD 10h that do not trap on
unaligned references if a status bit is twiddled at startup time.

llvm-svn: 93151
 2010-01-11 16:29:42 +00:00
Evan Cheng 71d7eaa87e Remove target attribute break-sse-dep. Instead, do not fold load into sse partial update instructions unless optimizing for size. 
llvm-svn: 91910
 2009-12-22 17:47:23 +00:00
Anton Korobeynikov 148d87b0b0 Bump alignment requirements for windows targets to achieve compartibility with vcpp. 
Based on patch by Michael Beck!

llvm-svn: 91745
 2009-12-19 02:04:23 +00:00
Evan Cheng 4cf30b72bf On recent Intel u-arch's, folding loads into some unary SSE instructions can 
be non-optimal. To be precise, we should avoid folding loads if the instructions
only update part of the destination register, and the non-updated part is not
needed. e.g. cvtss2sd, sqrtss. Unfolding the load from these instructions breaks
the partial register dependency and it can improve performance. e.g.

movss (%rdi), %xmm0
cvtss2sd %xmm0, %xmm0

instead of
cvtss2sd (%rdi), %xmm0

An alternative method to break dependency is to clear the register first. e.g.
xorps %xmm0, %xmm0
cvtss2sd (%rdi), %xmm0

llvm-svn: 91672
 2009-12-18 07:40:29 +00:00
Dan Gohman 7a6611793f Target-independent support for TargetFlags on BlockAddress operands, 
and support for blockaddresses in x86-32 PIC mode.

llvm-svn: 89506
 2009-11-20 23:18:13 +00:00
David Goodwin b9fe5d5d02 Allow target to specify regclass for which antideps will only be broken along the critical path. 
llvm-svn: 88682
 2009-11-13 19:52:48 +00:00
David Goodwin 0d412c2528 Fixed to address code review. No functional changes. 
llvm-svn: 86634
 2009-11-10 00:48:55 +00:00
David Goodwin cf89db135e Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies. 
llvm-svn: 86628
 2009-11-10 00:15:47 +00:00
Chris Lattner 8714348afd indicate what the native integer types for the target are. 
Please verify.

llvm-svn: 86397
 2009-11-07 19:07:32 +00:00
Evan Cheng 8b86efefec X86 needs critical path anti-dependency breaking. 
llvm-svn: 84931
 2009-10-23 05:57:35 +00:00
David Goodwin 02ad4cb32e Allow the target to select the level of anti-dependence breaking that should be performed by the post-RA scheduler. The default is none. 
llvm-svn: 84911
 2009-10-22 23:19:17 +00:00
Evan Cheng c436631a9c Turn on post-alloc scheduling for x86. 
llvm-svn: 84431
 2009-10-18 19:57:27 +00:00
Evan Cheng 936d87b39d Oops. I forgot to change the tests first. Disable post-alloc scheduling. 
llvm-svn: 84425
 2009-10-18 18:31:31 +00:00
Evan Cheng 0e9d9ca855 -Revert parts of 84326 and 84411. Distinquishing between fixed and non-fixed 
stack slots and giving them different PseudoSourceValue's did not fix the
problem of post-alloc scheduling miscompiling llvm itself.
- Apply Dan's conservative workaround by assuming any non fixed stack slots can
alias other memory locations. This means a load from spill slot #1 cannot 
move above a store of spill slot #2. 
- Enable post-alloc scheduling for x86 at optimization leverl Default and above.

llvm-svn: 84424
 2009-10-18 18:16:27 +00:00
Evan Cheng 007ceb4603 Change createPostRAScheduler so it can be turned off at llc -O1. 
llvm-svn: 84273
 2009-10-16 21:06:15 +00:00