0d639a28aa
Rename TargetSubtarget to TargetSubtargetInfo for consistency.
...
llvm-svn: 134259
2011-07-01 21:01:15 +00:00
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
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
3a0c5e52ff
Remove TargetOptions.h dependency from X86Subtarget.
...
llvm-svn: 133726
2011-06-23 17:54:54 +00:00
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
100455a3c8
Target/X86: Eliminate uses of getDarwinVers().
...
llvm-svn: 129813
2011-04-19 21:04:12 +00:00
44b530369d
Target/X86: Add getTargetTriple() accessor.
...
llvm-svn: 129812
2011-04-19 21:01:47 +00:00
e8a93fe8f0
Stack alignment is 16 bytes on FreeBSD/i386 too.
...
llvm-svn: 126226
2011-02-22 17:30:05 +00:00
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
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
0544fe7287
Fix whitespace.
...
llvm-svn: 125746
2011-02-17 12:23:50 +00:00
d22a4a1fd6
Patches to build EFI with Clang/LLVM. By Carl Norum.
...
llvm-svn: 124639
2011-02-01 01:14:13 +00:00
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
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
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
ea639aa11f
X86Subtarget.h: Fix Cygwin's TD.
...
llvm-svn: 114297
2010-09-18 19:50:42 +00:00
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
09dc24beac
Add x86 CLMUL (Carry-less multiplication) cpu feature
...
llvm-svn: 109206
2010-07-23 01:17:51 +00:00
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
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
050df1b8de
Enable i16 to i32 promotion by default.
...
llvm-svn: 102493
2010-04-28 08:30:49 +00:00
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
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
738b0f9ec7
Nehalem unaligned memory access is fast.
...
llvm-svn: 100089
2010-04-01 05:58:17 +00:00
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
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
abd56bde0e
80-col violations/trailing whitespace.
...
llvm-svn: 97427
2010-02-28 22:54:30 +00:00
c3c357006e
Setup correct data layout to match gcc's expectations on mingw32.
...
llvm-svn: 95981
2010-02-12 15:28:56 +00:00
0067d6bbbe
Fix typo.
...
llvm-svn: 93235
2010-01-12 08:30:46 +00:00
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
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
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
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
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
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
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
0d412c2528
Fixed to address code review. No functional changes.
...
llvm-svn: 86634
2009-11-10 00:48:55 +00:00
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
8714348afd
indicate what the native integer types for the target are.
...
Please verify.
llvm-svn: 86397
2009-11-07 19:07:32 +00:00
8b86efefec
X86 needs critical path anti-dependency breaking.
...
llvm-svn: 84931
2009-10-23 05:57:35 +00:00
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
c436631a9c
Turn on post-alloc scheduling for x86.
...
llvm-svn: 84431
2009-10-18 19:57:27 +00:00
936d87b39d
Oops. I forgot to change the tests first. Disable post-alloc scheduling.
...
llvm-svn: 84425
2009-10-18 18:31:31 +00:00
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
007ceb4603
Change createPostRAScheduler so it can be turned off at llc -O1.
...
llvm-svn: 84273
2009-10-16 21:06:15 +00:00
e4a2117161
Remove X86Subtarget::IsLinux. It's no longer being used.
...
llvm-svn: 84200
2009-10-15 20:23:21 +00:00
46dcaadb4a
rearrange X86ATTAsmPrinter::doFinalization, making a scan of
...
the global variable list only happen for COFF targets.
llvm-svn: 82010
2009-09-16 05:20:33 +00:00
c3a0aba120
Make these functions static and local.
...
llvm-svn: 80892
2009-09-03 05:47:34 +00:00
47455a79ae
X86JITInfo::getLazyResolverFunction() should not read cpu id to determine whether sse is available. Just use consult subtarget.
...
No functionality changes.
llvm-svn: 80880
2009-09-03 04:37:05 +00:00
cc8c581a5b
Add support for modeling whether or not the processor has support for
...
conditional moves as a subtarget feature. This is the easy part of
PR4841.
llvm-svn: 80763
2009-09-02 05:53:04 +00:00
1e9097e36a
change the -x86-asm-syntax=intel/att flag to be in X86TAI
...
instead of X86 Subtarget. This elimianates dependencies on
X86Subtarget from X86TAI.
llvm-svn: 78746
2009-08-11 23:01:09 +00:00
31b44e8f6c
Normalize Subtarget constructors to take a target triple string instead of
...
Module*.
Also, dropped uses of TargetMachine where unnecessary. The only target which
still takes a TargetMachine& is Mips, I would appreciate it if someone would
normalize this to match other targets.
llvm-svn: 77918
2009-08-02 22:11:08 +00:00
21c2940553
remove the now-dead TM argument to these methods.
...
llvm-svn: 75276
2009-07-10 21:00:45 +00:00
ba4d73310a
make PIC vs DynamicNoPIC be explicit in PICStyles.
...
llvm-svn: 75275
2009-07-10 20:58:47 +00:00
e2f524f176
add a couple of predicates to test for "stub style pic in PIC mode" and "stub style pic in dynamic-no-pic" mode.
...
llvm-svn: 75273
2009-07-10 20:47:30 +00:00
20073edf67
simplify fast isel by using ClassifyGlobalReference. This
...
elimiantes the last use of GVRequiresExtraLoad, so delete it.
llvm-svn: 75244
2009-07-10 07:48:51 +00:00
93f0f79178
eliminate GVRequiresRegister, replacing it with predicates we
...
need for other purposes.
llvm-svn: 75243
2009-07-10 07:38:24 +00:00
dc842c06c2
move some classification logic around. Now GVRequiresExtraLoad
...
is just a trivial wrapper around "ClassifyGlobalReference", which
stole a ton of logic from LowerGlobalAddress.
llvm-svn: 75237
2009-07-10 07:20:05 +00:00
b9af63a4d2
GVRequiresExtraLoad is now never used for calls, simplify it based on this.
...
llvm-svn: 75232
2009-07-10 05:52:02 +00:00
ace6ec26d9
actually, just eliminate PCRelGVRequiresExtraLoad. It makes the code
...
more complex and slow than just directly testing what we care about.
llvm-svn: 75231
2009-07-10 05:48:03 +00:00
7277a807f0
There is only one case where GVRequiresExtraLoad returns true for calls:
...
split its handling out to PCRelGVRequiresExtraLoad, and simplify code
based on this.
llvm-svn: 75230
2009-07-10 05:45:15 +00:00
1cc7ae7c3b
the "isDirectCall" operand of GVRequiresRegister is always false, eliminate it.
...
llvm-svn: 75229
2009-07-10 05:37:11 +00:00
1c5bf9d26d
When in -static mode, force the PIC style to none. Doing this requires fixing
...
code which conflated RIPRel PIC with x86-64. Fix these to just check for X86-64
directly.
llvm-svn: 75092
2009-07-09 03:15:51 +00:00
a4b8998fbb
Fix a subtarget feature bug.
...
llvm-svn: 74428
2009-06-29 16:51:01 +00:00
8f6f72cc99
Add feature flags for AVX and FMA and fix some SSE4A feature flag
...
initialization problems.
llvm-svn: 74350
2009-06-26 22:46:54 +00:00
cfad3f3807
cosmetic changes.
...
llvm-svn: 73836
2009-06-21 01:27:55 +00:00
96180b5387
Update CPU capabilities for AMD machines
...
- added processors k8-sse3, opteron-sse3, athlon64-sse3, amdfam10, and
barcelona with appropriate sse3/4a levels
- added FeatureSSE4A for amdfam10 processors
in X86Subtarget:
- added hasSSE4A
- updated AutoDetectSubtargetFeatures to detect SSE4A
- updated GetCurrentX86CPU to detect family 15 with sse3 as k8-sse3 and
family 10h as amdfam10
New processor names match those used by gcc.
Patch by Paul Redmond!
llvm-svn: 72434
2009-05-26 21:04:35 +00:00
08bf4c0f5a
Propagate CPU string out of SubtargetFeatures
...
llvm-svn: 72335
2009-05-23 19:50:50 +00:00
960983371c
Try again. Allow call to immediate address for ELF or when in static relocation mode.
...
llvm-svn: 72160
2009-05-20 04:53:57 +00:00
906152a20f
Tidy up #includes, deleting a bunch of unnecessary #includes.
...
llvm-svn: 61715
2009-01-05 17:59:02 +00:00
4c91aa3418
Do not isel load folding bt instructions for pentium m, core, core2, and AMD processors. These are significantly slower than a load followed by a bt of a register.
...
llvm-svn: 61557
2009-01-02 05:35:45 +00:00
b9a012156b
Add initial support for back-scheduling address computations,
...
especially in the case of addresses computed from loop induction
variables.
llvm-svn: 61075
2008-12-16 03:35:01 +00:00
b49d7cf19e
Forgot a file.
...
llvm-svn: 60609
2008-12-05 21:55:35 +00:00
595a4423dc
Fix build with gcc-4.4: it doesn't like PICStyle
...
being both a namespace and a variable name.
llvm-svn: 60208
2008-11-28 09:29:37 +00:00
1782584f56
Just don't transform this memset into "bzero" if no-builtin is specified.
...
llvm-svn: 56888
2008-09-30 22:05:33 +00:00
bd09262e97
Add the new `-no-builtin' flag. This flag is meant to mimic the GCC
...
`-fno-builtin' flag. Currently, it's used to replace "memset" with "_bzero"
instead of "__bzero" on Darwin10+. This arguably violates the meaning of this
flag, but is currently sufficient. The meaning of this flag should become more
specific over time.
llvm-svn: 56885
2008-09-30 21:22:07 +00:00
6fd71c6512
Use a dedicated IsLinux flag instead of an ELFLinux TargetType.
...
llvm-svn: 50649
2008-05-05 16:11:31 +00:00
bcde172222
Add AsmPrinter support for emitting a directive to declare that
...
the code being generated does not require an executable stack.
Also, add target-specific code to make use of this on Linux
on x86.
llvm-svn: 50634
2008-05-05 00:28:39 +00:00
6c66bd368e
Re-enable SSE4.
...
llvm-svn: 49158
2008-04-03 08:53:29 +00:00
3063c5546e
Temporarily disabling SSE4 until we fix the encoding issues.
...
llvm-svn: 49129
2008-04-03 04:49:54 +00:00
980d7200c1
Speculatively micro-optimize memory-zeroing calls on Darwin 10.
...
llvm-svn: 49048
2008-04-01 20:38:36 +00:00
7f125b2ba5
Add convenient helper for win64 check. Simplify things slightly.
...
llvm-svn: 48691
2008-03-22 20:57:27 +00:00
352acec37e
Update comment.
...
llvm-svn: 47002
2008-02-12 07:59:55 +00:00
a20a773654
Fix a x86-64 codegen deficiency. Allow gv + offset when using rip addressing mode.
...
Before:
_main:
subq $8, %rsp
leaq _X(%rip), %rax
movsd 8(%rax), %xmm1
movss _X(%rip), %xmm0
call _t
xorl %ecx, %ecx
movl %ecx, %eax
addq $8, %rsp
ret
Now:
_main:
subq $8, %rsp
movsd _X+8(%rip), %xmm1
movss _X(%rip), %xmm0
call _t
xorl %ecx, %ecx
movl %ecx, %eax
addq $8, %rsp
ret
Notice there is another idiotic codegen issue that needs to be fixed asap:
xorl %ecx, %ecx
movl %ecx, %eax
llvm-svn: 46850
2008-02-07 08:53:49 +00:00
e14fdfaecd
SSE 4.1 Intrinsics and detection
...
llvm-svn: 46681
2008-02-03 07:18:54 +00:00
cce79c67ca
darwin9 and above support aligned common symbols.
...
llvm-svn: 45494
2008-01-02 19:44:55 +00:00
f3ebc3f3d2
Remove attribution from file headers, per discussion on llvmdev.
...
llvm-svn: 45418
2007-12-29 20:36:04 +00:00
063f177300
Make ARM an X86 memcpy expansion more similar to each other.
...
Now both subtarget define getMaxInlineSizeThreshold and the expansion uses it.
This should not change generated code.
llvm-svn: 43552
2007-10-31 11:52:06 +00:00
1de0c86717
Add support for having different alignment for objects on call frames.
...
The x86-64 ABI states that objects passed on the stack have
8 byte alignment. Implement that.
llvm-svn: 41768
2007-09-07 14:52:14 +00:00
623dd88775
Mac OS X X86-64 ABI is same as the standard.
...
llvm-svn: 41700
2007-09-04 16:44:41 +00:00
bb8a5cff67
Align i64 and f64 at 8 byte on x86-64.
...
This is mandated table 3.1 at
http://www.x86-64.org/documentation/abi.pdf
llvm-svn: 41642
2007-08-31 12:23:58 +00:00
a010822b45
Replace 4-line function with 10-line version per review comment.
...
llvm-svn: 40881
2007-08-06 22:10:35 +00:00
d1822ea7d1
Move lengthy conditional down 1 level per review comment.
...
llvm-svn: 40878
2007-08-06 21:48:35 +00:00
763cdfd371
Mac OS X X86-64 low 4G address not available.
...
llvm-svn: 40701
2007-08-01 23:45:51 +00:00
f099841573
Add support for our first SSSE3 instruction "pmulhrsw".
...
llvm-svn: 35869
2007-04-10 22:10:25 +00:00
6cc58a0dc5
document some subtlety
...
llvm-svn: 33257
2007-01-16 17:51:40 +00:00
c7b2ab9bdf
Instead of yet another enum indicating the "assembly language flavor",
...
just use the one that's in the subtarget.
llvm-svn: 33255
2007-01-16 09:29:17 +00:00
a0554d90e8
* PIC codegen for X86/Linux has been implemented
...
* PIC-aware internal structures in X86 Codegen have been refactored
* Visibility (default/weak) has been added
* Docs fixes (external weak linkage, visibility, formatting)
llvm-svn: 33136
2007-01-12 19:20:47 +00:00
4efbbc963f
Really big cleanup.
...
- New target type "mingw" was introduced
- Same things for both mingw & cygwin are marked as "cygming" (as in
gcc)
- .lcomm is supported here, so allow LLVM to use it
- Correctly use underscored versions of setjmp & _longjmp for both mingw
& cygwin
llvm-svn: 32833
2007-01-03 11:43:14 +00:00
430e68a1b9
Refactored JIT codegen for mingw32. Now we're using standart relocation
...
type for distinguish JIT & non-JIT instead of "dirty" hacks :)
llvm-svn: 32745
2006-12-22 22:29:05 +00:00
93acb49182
Fixed dllimported symbols support during JIT'ing. JIT on mingw32
...
platform should be more or less workable. At least, sim is running fine
under lli :)
llvm-svn: 32711
2006-12-20 01:03:20 +00:00
6dbdfe2baa
Factor out GVRequiresExtraLoad() from .h to .cpp
...
llvm-svn: 32048
2006-11-30 22:42:55 +00:00
5b96cdebb0
Refactored *GVRequiresExtraLoad() to Subtarget method.
...
llvm-svn: 31887
2006-11-21 00:01:06 +00:00
a8b4aeace0
Proper fix for rdar://problem/4770604 Thanks to Stuart Hastings!
...
llvm-svn: 30985
2006-10-16 21:00:37 +00:00
ff1beda569
Still need to support -mcpu=<> or cross compilation will fail. Doh.
...
llvm-svn: 30764
2006-10-06 09:17:41 +00:00
9274f72e58
Do away with CPU feature list. Just use CPUID to detect MMX, SSE, SSE2, SSE3, and 64-bit support.
...
llvm-svn: 30763
2006-10-06 08:21:07 +00:00
d61d39ec53
Adding dllimport, dllexport and external weak linkage types.
...
DLL* linkages got full (I hope) codegeneration support in C & both x86
assembler backends.
External weak linkage added for future use, we don't provide any
codegeneration, etc. support for it.
llvm-svn: 30374
2006-09-14 18:23:27 +00:00
11b0a5dbd4
Committing X86-64 support.
...
llvm-svn: 30177
2006-09-08 06:48:29 +00:00
2785d55446
add a new value for the command line optn
...
llvm-svn: 30165
2006-09-07 22:32:28 +00:00
c7abe471fe
Make the x86 asm flavor part of the subtarget info.
...
llvm-svn: 30146
2006-09-07 12:23:47 +00:00
e8ce162969
Add accessor
...
llvm-svn: 30080
2006-09-04 04:08:58 +00:00
5588de9415
x86 / Darwin PIC support.
...
llvm-svn: 26273
2006-02-18 00:15:05 +00:00
03c1e6f48e
A bit more memset / memcpy optimization.
...
Turns them into calls to memset / memcpy if 1) buffer(s) are not DWORD aligned,
2) size is not known to be greater or equal to some minimum value (currently 128).
llvm-svn: 26224
2006-02-16 00:21:07 +00:00
c642aa5e1c
* Fix 80-column violations
...
* Rename hasSSE -> hasSSE1 to avoid my continual confusion with 'has any SSE'.
* Add inline asm constraint specification.
llvm-svn: 25854
2006-01-31 19:43:35 +00:00
cde9e30bc6
x86 CPU detection and proper subtarget support
...
llvm-svn: 25679
2006-01-27 08:10:46 +00:00
54c13da29c
Added preliminary x86 subtarget support.
...
llvm-svn: 25645
2006-01-26 09:53:06 +00:00
40f8c8450d
Simplify the subtarget info, allow the asmwriter to do some target sensing
...
based on TargetType.
llvm-svn: 24478
2005-11-21 22:43:58 +00:00
3eb876117a
Make the X86 subtarget compute the basic target type: ELF, Cygwin, Darwin,
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or native Win32
llvm-svn: 24476
2005-11-21 22:31:58 +00:00
19058c3989
1. Use SubtargetFeatures in llc/lli.
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2. Propagate feature "string" to all targets.
3. Implement use of SubtargetFeatures in PowerPCTargetSubtarget.
llvm-svn: 23192
2005-09-01 21:38:21 +00:00
3bcfcd9474
Add Subtarget support to PowerPC. Next up, using it.
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llvm-svn: 22644
2005-08-04 07:12:09 +00:00
33a030e36c
Eliminate tabs and trailing spaces.
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llvm-svn: 22520
2005-07-27 05:53:44 +00:00
351817b1f9
Minor changes to improve comments and fix the build on _WIN32 systems.
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llvm-svn: 22391
2005-07-12 02:36:10 +00:00
f26625e1de
Implement Subtarget support
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Implement the X86 Subtarget.
This consolidates the checks for target triple, and setting options based
on target triple into one place. This allows us to convert the asm printer
and isel over from being littered with "forDarwin", "forCygwin", etc. into
just having the appropriate flags for each subtarget feature controlling
the code for that feature.
This patch also implements indirect external and weak references in the
X86 pattern isel, for darwin. Next up is to convert over the asm printers
to use this new interface.
llvm-svn: 22389
2005-07-12 01:41:54 +00:00
Evan Cheng