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5199 Commits

Author SHA1 Message Date
Evan Cheng
bc84a42d7b Revert 93158. It's breaking quite a few x86_64 tests. 
llvm-svn: 93185
 2010-01-11 21:13:41 +00:00
Evan Cheng
4548543b0b Do not turn 8-bit OR to ADD since ADD8ri is not 3-addressfiable. 
llvm-svn: 93182
 2010-01-11 20:18:04 +00:00
Benjamin Kramer
cdbc36f961 Reimplement getToken and SplitString as "StringRef helper functions" 
- getToken is modeled after StringRef::split but it can split on multiple
  separator chars and skips leading seperators.
- SplitString is a StringRef::split variant for more than 2 elements with the
  same behaviour as getToken.

llvm-svn: 93161
 2010-01-11 18:03:24 +00:00
Dan Gohman
541c4f4c5d Use a 32-bit and with implicit zero-extension instead of a 64-bit and if it 
has an immediate with at least 32 bits of leading zeros, to avoid needing to
materialize that immediate in a register first.

FileCheckize, tidy, and extend a testcase to cover this case.

This fixes rdar://7527390.

llvm-svn: 93160
 2010-01-11 17:58:34 +00:00
Dan Gohman
5b79391087 Re-instate MOV64r0 and MOV16r0, with adjustments to work with the 
new AsmPrinter. This is perhaps less elegant than describing them
in terms of MOV32r0 and subreg operations, but it allows the
current register to rematerialize them.

llvm-svn: 93158
 2010-01-11 17:37:57 +00:00
Dan Gohman
a83443605d Pattern top-level operators don't need to be restricted to a 
single user. The _su forms are intended for non-top-level nodes.

llvm-svn: 93155
 2010-01-11 17:21:05 +00:00
Dan Gohman
5042879ae5 Reword this comment to reference a more fundamental issue. 
llvm-svn: 93154
 2010-01-11 17:14:46 +00:00
Evan Cheng
ee806a0db5 Select an OR with immediate as an ADD if the input bits are known zero. This allow the instruction to be 3address-fied if needed. 
llvm-svn: 93152
 2010-01-11 17:03:47 +00:00
David Greene
b879ff4855 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
Jeffrey Yasskin
53a8f3981c Fix http://llvm.org/PR5729: x86-64 tail calls were putting their targets into 
R11, and then asserting that the target was in R9.  Since R9 isn't reserved for
the target anymore, and is used as an argument, this patch changes the
assertion.

llvm-svn: 93065
 2010-01-09 18:56:43 +00:00
Evan Cheng
2e497d1ed4 Fix a critical bug in 64-bit atomic operation lowering for 32-bit. The results of the cmpxchg8b instructions are being thrown away when it branches back to the top of the checking loop. This means the loop always compares against the old value and this can result in a dead lock. 
llvm-svn: 93028
 2010-01-08 23:41:50 +00:00
Evan Cheng
8b248e5016 Fix comment. 
llvm-svn: 93020
 2010-01-08 19:14:57 +00:00
Eric Christopher
067afe673c After further thought revert the patch to make fast-isel avoid 
putting relocations into the constant pool - this isn't needed
for correctness and in the rare occasion it happens would pull
us out of fast isel for the block.

If fast-isel application startup time ever becomes an issue we
can add better support for these addresses instead of bailing.

llvm-svn: 92995
 2010-01-08 08:24:49 +00:00
Evan Cheng
4f25f87baa Fix what looks to me obvious instruction definition bugs. 
1. CMPXCHG8B and CMPXCHG16B did not specify implicit physical register defs and uses.
2. LCMPXCHG8B is loading 64 bit memory, not 32 bit.

llvm-svn: 92985
 2010-01-08 01:29:19 +00:00
Eric Christopher
2a3196c2e5 Remove extraneous include. 
llvm-svn: 92972
 2010-01-08 00:05:33 +00:00
Eric Christopher
d218bc7a2f If the data requires a relocation then don't attempt to 
add it to the constant pool for fast-isel. We already
don't add it for the normal case.

llvm-svn: 92934
 2010-01-07 19:45:14 +00:00
Evan Cheng
51d86260ff Fix a minor regression from my dag combiner changes. One more place which needs to look pass truncates. 
llvm-svn: 92885
 2010-01-07 00:54:06 +00:00
Evan Cheng
25dcf9b830 Teach dag combine to fold the following transformation more aggressively: 
(OP (trunc x), (trunc y)) -> (trunc (OP x, y))

Unfortunately this simple change causes dag combine to infinite looping. The problem is the shrink demanded ops optimization tend to canonicalize expressions in the opposite manner. That is badness. This patch disable those optimizations in dag combine but instead it is done as a late pass in sdisel.

This also exposes some deficiencies in dag combine and x86 setcc / brcond lowering. Teach them to look pass ISD::TRUNCATE in various places.

llvm-svn: 92849
 2010-01-06 19:38:29 +00:00
Benjamin Kramer
0ba7479f2c Move remaining stuff to the isInteger predicate. 
llvm-svn: 92771
 2010-01-05 21:05:54 +00:00
Benjamin Kramer
c233521d45 Convert a ton of simple integer type equality tests to the new predicate. 
llvm-svn: 92760
 2010-01-05 20:07:06 +00:00
Evan Cheng
3c99a6f8c3 Code refactoring. 
llvm-svn: 92694
 2010-01-05 06:52:31 +00:00
David Greene
d1475983db Change errs() to dbgs(). 
llvm-svn: 92654
 2010-01-05 01:29:34 +00:00
David Greene
05203dccf1 Change errs() to dbgs(). 
llvm-svn: 92653
 2010-01-05 01:29:29 +00:00
David Greene
b5d95aa80e Change errs() to dbgs(). 
llvm-svn: 92651
 2010-01-05 01:29:23 +00:00
David Greene
8a947405d5 Change errs() to dbgs(). 
llvm-svn: 92648
 2010-01-05 01:29:13 +00:00
David Greene
8a6a52d2b8 Change errs() to dbgs(). 
llvm-svn: 92647
 2010-01-05 01:29:08 +00:00
David Greene
13baf4f08a Change errs() to dbgs(). 
llvm-svn: 92644
 2010-01-05 01:28:53 +00:00
Dan Gohman
9bcfdf98f1 Change SelectCode's argument from SDValue to SDNode *, to make it more 
clear what information these functions are actually using.

This is also a micro-optimization, as passing a SDNode * around is
simpler than passing a { SDNode *, int } by value or reference.

llvm-svn: 92564
 2010-01-05 01:24:18 +00:00
Dan Gohman
d3383baab0 Remove the SDNPAssociative properties for the flags-producing 
operators. Eli pointed out that it's not obvious what that
would mean.

llvm-svn: 92555
 2010-01-05 00:44:20 +00:00
Evan Cheng
275a43dadb Perform this folding as a target specific dag combine: 
(or (x << c) | (y >> (64 - c))) ==> (shld64 x, y, c)

The isel patterns may not catch all the cases if general dag combine has reduced width of source operands.

llvm-svn: 92513
 2010-01-04 21:22:48 +00:00
Dan Gohman
f5f090c2c5 Remove some README.txt entries which are now implemented. 
llvm-svn: 92511
 2010-01-04 20:55:05 +00:00
Dan Gohman
5f107150ed A use by operand 1 or 2 of a SELECT is not a FLAGS use. This 
lets the test-elimination work in more conditional-move cases.

llvm-svn: 92508
 2010-01-04 20:52:50 +00:00
Dan Gohman
f87ad693cf Flags-producing add, and, or, etc. have the same profibility 
rules as normal add, and, or, etc.

llvm-svn: 92507
 2010-01-04 20:51:50 +00:00
Dan Gohman
29583f656d Add SDNPCommutative and SDNPAssociative to several X86 target nodes. 
This lets isel fold loads into them in more cases.

llvm-svn: 92506
 2010-01-04 20:51:05 +00:00
Benjamin Kramer
1d24aae2db Replace a few more SmallVectors with arrays. 
llvm-svn: 92265
 2009-12-29 16:57:26 +00:00
Bill Wendling
b96be04b8a Remove dead variable. 
llvm-svn: 92184
 2009-12-28 01:36:02 +00:00
Eli Friedman
3a53d1cb1a PR5886: Make sure IMUL32m is marked as setting EFLAGS, so scheduling doesn't 
do illegal stuff around it.  No testcase because the issue is very fragile.

llvm-svn: 92167
 2009-12-26 20:08:30 +00:00
Chris Lattner
f77ca5f9f5 really remove the instruction, don't just comment it out 
llvm-svn: 91976
 2009-12-23 01:46:40 +00:00
Chris Lattner
d7e8bd73fe completely eliminate the MOV16r0 'instruction'. The only 
interesting part of this is the divrem changes, which are
already tested by CodeGen/X86/divrem.ll.

llvm-svn: 91975
 2009-12-23 01:45:04 +00:00
Sean Callanan
0c1d56a0c8 More fixes for Visual C++. Replaced several very small 
static inline functions with macros.

llvm-svn: 91973
 2009-12-23 01:32:29 +00:00
Chris Lattner
dbcf2725aa stop pattern matching 16-bit zero's of a register to MOV16r0, 
instead use the appropriate subreggy thing.  This generates identical
code on some large apps (thanks to Evan's cross class coalescing
stuff he did back in july).  This means that MOV16r0 can go away
completely in the future soon.

llvm-svn: 91972
 2009-12-23 01:30:26 +00:00
Sean Callanan
3ccfaafab6 Removed the "inline" keyword from the disassembler decoder, 
because the Visual C++ build does not build .c files as C99

llvm-svn: 91935
 2009-12-22 22:51:40 +00:00
Sean Callanan
983f906451 Fixes to the X86 disassembler: 
Made LEA memory operands emit only 4 MCInst operands.
Made the scale operand equal 1 for instructions that have no
SIB byte.

llvm-svn: 91919
 2009-12-22 21:12:55 +00:00
Evan Cheng
7cd6bfe549 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
Douglas Gregor
0590ad1884 Include based on the current path, since we already -I the X86 target's path. Fixes CMake build 
llvm-svn: 91908
 2009-12-22 17:25:11 +00:00
Bill Wendling
fc4c238bd5 Add more plumbing. This time in the LowerArguments and "get" functions which 
return partial registers. This affected the back-end lowering code some.

Also patch up some places I missed before in the "get" functions.

llvm-svn: 91880
 2009-12-22 02:10:19 +00:00
Sean Callanan
09b2d80d2c Changed REG_* to MODRM_REG_* to avoid conflicts 
with symbols in AuroraUX's global namespace.

llvm-svn: 91879
 2009-12-22 02:07:42 +00:00
Daniel Dunbar
abb0af5166 Fix some may-be-uninitialized var warnings. 
llvm-svn: 91878
 2009-12-22 01:41:37 +00:00
Sean Callanan
feddcdf843 Fixed library dependencies between the X86 disassembler and 
X86 codegen that were causing circular symbol dependencies.

llvm-svn: 91871
 2009-12-22 01:11:26 +00:00
Chris Lattner
0651fc828b print pcrel immediates as signed values instead of unsigned so that we 
get things like this out of the disassembler:

0x100000ecb: callq	-96

instead of:

0x100000ecb: callq	4294967200

rdar://7491123

llvm-svn: 91864
 2009-12-22 00:44:05 +00:00
Eric Christopher
5c812e2396 Fix setting and default setting of code model for jit. Do this 
by allowing backends to override routines that will default
the JIT and Static code generation to an appropriate code model
for the architecture.

Should fix PR 5773.

llvm-svn: 91824
 2009-12-21 08:15:29 +00:00
Eli Friedman
50c8e9154f A couple minor README updates. 
llvm-svn: 91823
 2009-12-21 08:03:16 +00:00
Daniel Dunbar
758730a9e9 #if 0 out X86 disassembler for now, it is breaking the build in multiple places. 
llvm-svn: 91778
 2009-12-19 17:11:53 +00:00
Nuno Lopes
78f040fa26 rename dprintf to dbgpritnf, in order to fix build with glibc (which already defines dprintf in stdio.h 
llvm-svn: 91775
 2009-12-19 12:07:00 +00:00
Daniel Dunbar
057ae7e82e Use memset instead of bzero, its more portable. 
llvm-svn: 91754
 2009-12-19 03:31:50 +00:00
Sean Callanan
18fa59f381 Table-driven disassembler for the X86 architecture (16-, 32-, and 64-bit 
incarnations), integrated into the MC framework.  

The disassembler is table-driven, using a custom TableGen backend to 
generate hierarchical tables optimized for fast decode.  The disassembler 
consumes MemoryObjects and produces arrays of MCInsts, adhering to the 
abstract base class MCDisassembler (llvm/MC/MCDisassembler.h).

The disassembler is documented in detail in

- lib/Target/X86/Disassembler/X86Disassembler.cpp (disassembler runtime)
- utils/TableGen/DisassemblerEmitter.cpp (table emitter)

You can test the disassembler by running llvm-mc -disassemble for i386
or x86_64 targets.  Please let me know if you encounter any problems
with it.

llvm-svn: 91749
 2009-12-19 02:59:52 +00:00
Anton Korobeynikov
4e05e61a52 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
d97d025eba 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
Evan Cheng
a647318eb3 Re-apply 91623 now that I actually know what I was trying to do. 
llvm-svn: 91655
 2009-12-18 01:59:21 +00:00
Sean Callanan
06b6feb2e1 Instruction fixes, added instructions, and AsmString changes in the 
X86 instruction tables.

Also (while I was at it) cleaned up the X86 tables, removing tabs and
80-line violations.

This patch was reviewed by Chris Lattner, but please let me know if
there are any problems.

* X86*.td
	Removed tabs and fixed 80-line violations

* X86Instr64bit.td
	(IRET, POPCNT, BT_, LSL, SWPGS, PUSH_S, POP_S, L_S, SMSW)
		Added
	(CALL, CMOV) Added qualifiers
	(JMP) Added PC-relative jump instruction
	(POPFQ/PUSHFQ) Added qualifiers; renamed PUSHFQ to indicate
		that it is 64-bit only (ambiguous since it has no
		REX prefix)
	(MOV) Added rr form going the other way, which is encoded
		differently
	(MOV) Changed immediates to offsets, which is more correct;
		also fixed MOV64o64a to have to a 64-bit offset
	(MOV) Fixed qualifiers
	(MOV) Added debug-register and condition-register moves
	(MOVZX) Added more forms
	(ADC, SUB, SBB, AND, OR, XOR) Added reverse forms, which
		(as with MOV) are encoded differently
	(ROL) Made REX.W required
	(BT) Uncommented mr form for disassembly only
	(CVT__2__) Added several missing non-intrinsic forms
	(LXADD, XCHG) Reordered operands to make more sense for
		MRMSrcMem
	(XCHG) Added register-to-register forms
	(XADD, CMPXCHG, XCHG) Added non-locked forms
* X86InstrSSE.td
	(CVTSS2SI, COMISS, CVTTPS2DQ, CVTPS2PD, CVTPD2PS, MOVQ)
		Added
* X86InstrFPStack.td
	(COM_FST0, COMP_FST0, COM_FI, COM_FIP, FFREE, FNCLEX, FNOP,
	 FXAM, FLDL2T, FLDL2E, FLDPI, FLDLG2, FLDLN2, F2XM1, FYL2X,
	 FPTAN, FPATAN, FXTRACT, FPREM1, FDECSTP, FINCSTP, FPREM,
	 FYL2XP1, FSINCOS, FRNDINT, FSCALE, FCOMPP, FXSAVE,
	 FXRSTOR)
		Added
	(FCOM, FCOMP) Added qualifiers
	(FSTENV, FSAVE, FSTSW) Fixed opcode names
	(FNSTSW) Added implicit register operand
* X86InstrInfo.td
	(opaque512mem) Added for FXSAVE/FXRSTOR
	(offset8, offset16, offset32, offset64) Added for MOV
	(NOOPW, IRET, POPCNT, IN, BTC, BTR, BTS, LSL, INVLPG, STR,
	 LTR, PUSHFS, PUSHGS, POPFS, POPGS, LDS, LSS, LES, LFS,
	 LGS, VERR, VERW, SGDT, SIDT, SLDT, LGDT, LIDT, LLDT,
	 LODSD, OUTSB, OUTSW, OUTSD, HLT, RSM, FNINIT, CLC, STC,
	 CLI, STI, CLD, STD, CMC, CLTS, XLAT, WRMSR, RDMSR, RDPMC,
	 SMSW, LMSW, CPUID, INVD, WBINVD, INVEPT, INVVPID, VMCALL,
	 VMCLEAR, VMLAUNCH, VMRESUME, VMPTRLD, VMPTRST, VMREAD,
	 VMWRITE, VMXOFF, VMXON) Added
	(NOOPL, POPF, POPFD, PUSHF, PUSHFD) Added qualifier
	(JO, JNO, JB, JAE, JE, JNE, JBE, JA, JS, JNS, JP, JNP, JL,
	 JGE, JLE, JG, JCXZ) Added 32-bit forms
	(MOV) Changed some immediate forms to offset forms
	(MOV) Added reversed reg-reg forms, which are encoded
		differently
	(MOV) Added debug-register and condition-register moves
	(CMOV) Added qualifiers
	(AND, OR, XOR, ADC, SUB, SBB) Added reverse forms, like MOV
	(BT) Uncommented memory-register forms for disassembler
	(MOVSX, MOVZX) Added forms
	(XCHG, LXADD) Made operand order make sense for MRMSrcMem
	(XCHG) Added register-register forms
	(XADD, CMPXCHG) Added unlocked forms
* X86InstrMMX.td
	(MMX_MOVD, MMV_MOVQ) Added forms
* X86InstrInfo.cpp: Changed PUSHFQ to PUSHFQ64 to reflect table
	change

* X86RegisterInfo.td: Added debug and condition register sets
* x86-64-pic-3.ll: Fixed testcase to reflect call qualifier
* peep-test-3.ll: Fixed testcase to reflect test qualifier
* cmov.ll: Fixed testcase to reflect cmov qualifier
* loop-blocks.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-11.ll: Fixed testcase to reflect call qualifier
* 2009-11-04-SubregCoalescingBug.ll: Fixed testcase to reflect call
  qualifier
* x86-64-pic-2.ll: Fixed testcase to reflect call qualifier
* live-out-reg-info.ll: Fixed testcase to reflect test qualifier
* tail-opts.ll: Fixed testcase to reflect call qualifiers
* x86-64-pic-10.ll: Fixed testcase to reflect call qualifier
* bss-pagealigned.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-1.ll: Fixed testcase to reflect call qualifier
* widen_load-1.ll: Fixed testcase to reflect call qualifier

llvm-svn: 91638
 2009-12-18 00:01:26 +00:00
Jeffrey Yasskin
f39a138a7c Revert r91623 to unbreak the buildbots. 
llvm-svn: 91632
 2009-12-17 22:44:34 +00:00
Evan Cheng
d765952b17 Remove an unused option. 
llvm-svn: 91623
 2009-12-17 21:23:58 +00:00
Ken Dyck
319b2ed194 In LowerEXTRACT_VECTOR_ELT, force an i32 value type for PEXTWR instead of 
incrementing the simple value type of the 16-bit type, which would give the
wrong type if an intemediate MVT (such as i24) were introduced.

llvm-svn: 91602
 2009-12-17 15:31:52 +00:00
Evan Cheng
aaf2f58a04 Re-enable 91381 with fixes. 
llvm-svn: 91489
 2009-12-16 00:53:11 +00:00
Jeffrey Yasskin
d50951dc1e Change indirect-globals to use a dedicated allocIndirectGV. This lets us 
remove start/finishGVStub and the BufferState helper class from the
MachineCodeEmitter interface.  It has the side-effect of not setting the
indirect global writable and then executable on ARM, but that shouldn't be
necessary.

llvm-svn: 91464
 2009-12-15 22:42:46 +00:00
Evan Cheng
32946d6aae Fix an encoding bug. 
llvm-svn: 91417
 2009-12-15 06:49:02 +00:00
Kenneth Uildriks
c0ab5a6e88 For fastcc on x86, let ECX be used as a return register after EAX and EDX 
llvm-svn: 91410
 2009-12-15 03:27:52 +00:00
Evan Cheng
4adb4acc7b Disable 91381 for now. It's miscompiling ARMISelDAG2DAG.cpp. 
llvm-svn: 91405
 2009-12-15 03:07:11 +00:00
Evan Cheng
cd8f0de016 Use sbb x, x to materialize carry bit in a GPR. The result is all one's or all zero's. 
llvm-svn: 91381
 2009-12-15 00:53:42 +00:00
Dan Gohman
57dc006590 Fix integer cast code to handle vector types. 
llvm-svn: 91362
 2009-12-14 23:40:38 +00:00
Bill Wendling
e4328758f9 Whitespace changes, comment clarification. No functional changes. 
llvm-svn: 91274
 2009-12-14 06:51:19 +00:00
Evan Cheng
ee5b5917fd Disable r91104 for x86. It causes partial register stall which pessimize code in 32-bit. 
llvm-svn: 91223
 2009-12-12 20:03:14 +00:00
Evan Cheng
5cd8cd2a5c Add comment about potential partial register stall. 
llvm-svn: 91220
 2009-12-12 18:55:26 +00:00
Evan Cheng
53e863f152 Fix an obvious bug. No test case since LEA16r is not being used. 
llvm-svn: 91219
 2009-12-12 18:51:56 +00:00
Dan Gohman
2e616e859b Implement vector widening, splitting, and scalarizing for SIGN_EXTEND_INREG. 
llvm-svn: 91158
 2009-12-11 21:31:27 +00:00
Anton Korobeynikov
f8b2e2868e Honour setHasCalls() set from isel. 
This is used in some weird cases like general dynamic TLS model.
This fixes PR5723

llvm-svn: 91144
 2009-12-11 19:39:55 +00:00
Evan Cheng
01a56041a5 Add support to 3-addressify 16-bit instructions. 
llvm-svn: 91104
 2009-12-11 06:01:48 +00:00
Evan Cheng
9e2442c0be Optimize splat of a scalar load into a shuffle of a vector load when it's legal. e.g. 
vector_shuffle (scalar_to_vector (i32 load (ptr + 4))), undef, <0, 0, 0, 0>
=>
vector_shuffle (v4i32 load ptr), undef, <1, 1, 1, 1>

iff ptr is 16-byte aligned (or can be made into 16-byte aligned).

llvm-svn: 90984
 2009-12-09 21:00:30 +00:00
Evan Cheng
41c13e41fe Teach InferPtrAlignment to infer GV+cst alignment and use it to simplify x86 isl lowering code. 
llvm-svn: 90925
 2009-12-09 01:53:58 +00:00
Evan Cheng
7941695285 Move isConsecutiveLoad to SelectionDAG. It's not target dependent and it's primary used by selectdag passes. 
llvm-svn: 90922
 2009-12-09 01:36:00 +00:00
Dan Gohman
44e25ed254 Don't enable the post-RA scheduler on x86 except at -O3. In its 
current form, it is too expensive in compile time.

llvm-svn: 90781
 2009-12-07 19:04:31 +00:00
Dan Gohman
f9654e9258 Remove the target hook TargetInstrInfo::BlockHasNoFallThrough in favor of 
MachineBasicBlock::canFallThrough(), which is target-independent and more
thorough.

llvm-svn: 90634
 2009-12-05 00:44:40 +00:00
David Greene
755852d0c3 Remove an unneeded include. 
llvm-svn: 90625
 2009-12-04 23:55:07 +00:00
David Greene
cb0611ec3b Have hasLoad/StoreFrom/ToStackSlot return the relevant MachineMemOperand. 
llvm-svn: 90608
 2009-12-04 22:38:46 +00:00
Chris Lattner
29e2e60be6 yay for case insensitive file systems (?) 
llvm-svn: 90370
 2009-12-03 01:10:05 +00:00
Chris Lattner
9ce833945e improve portability to avoid conflicting with std::next in c++'0x. 
Patch by Howard Hinnant!

llvm-svn: 90365
 2009-12-03 00:50:42 +00:00
Jim Grosbach
0e1230b23b Factor the stack alignment calculations out into a target independent pass. 
No functionality change.

llvm-svn: 90336
 2009-12-02 19:30:24 +00:00
Dan Gohman
e573c59c90 Minor whitespace fixes. 
llvm-svn: 90166
 2009-11-30 23:33:53 +00:00
Dan Gohman
af05157fde Fix a minor inconsistency. 
llvm-svn: 90165
 2009-11-30 23:33:37 +00:00
Bob Wilson
b293fe32cb Remove isProfitableToDuplicateIndirectBranch target hook. It is profitable 
for all the processors where I have tried it, and even when it might not help
performance, the cost is quite low.  The opportunities for duplicating
indirect branches are limited by other factors so code size does not change
much due to tail duplicating indirect branches aggressively.

llvm-svn: 90144
 2009-11-30 18:35:03 +00:00
Mon P Wang
27bce4e285 Added support to allow clients to custom widen. For X86, custom widen vectors for 
divide/remainder since these operations can trap by unroll them and adding undefs
for the resulting vector.

llvm-svn: 90108
 2009-11-30 02:42:02 +00:00
Bob Wilson
aee7a9e676 Based on the testcase for pr3120, running on my MacPro with Xeon processors, 
it is definitely profitable to tail duplicate indirect branches for x86.
This is likely to be true to various degrees for all modern x86 processors.

llvm-svn: 89865
 2009-11-25 17:27:53 +00:00
Daniel Dunbar
ffe6484b7c Sketch structure for X86 disassembler. 
llvm-svn: 89850
 2009-11-25 06:53:08 +00:00
Jeffrey Yasskin
0a0b21f8c5 * Move stub allocation inside the JITEmitter, instead of exposing a 
way for each TargetJITInfo subclass to allocate its own stubs. This
means stubs aren't as exactly-sized anymore, but it lets us get rid of
TargetJITInfo::emitFunctionStubAtAddr(), which lets ARM and PPC
support the eager JIT, fixing http://llvm.org/PR4816.

* Rename the JITEmitter's stub creation functions to describe the kind
of stub they create. So far, all of them create lazy-compilation
stubs, but they sometimes get used when far-call stubs are needed.
Fixing http://llvm.org/PR5201 will involve fixing this.

llvm-svn: 89715
 2009-11-23 23:35:19 +00:00
Dan Gohman
b5ec39e2dc Remove ISD::DEBUG_LOC and ISD::DBG_LABEL, which are no longer used. 
Note that "hasDotLocAndDotFile"-style debug info was already broken;
people wanting this functionality should implement it in the
AsmPrinter/DwarfWriter code.

llvm-svn: 89711
 2009-11-23 23:20:51 +00:00
Jeffrey Yasskin
ed6d1ce9ae Allow more than one stub to be being generated at the same time. 
It's probably better in the long run to replace the
indirect-GlobalVariable system. That'll be done after a subsequent
patch.

llvm-svn: 89708
 2009-11-23 22:49:00 +00:00
Devang Patel
327919890c We are not using DBG_STOPPOINT anymore. 
llvm-svn: 89536
 2009-11-21 02:46:55 +00:00
Dan Gohman
e5eddcd606 Fix a thinko that caused spurious @GOTOFFs. 
llvm-svn: 89509
 2009-11-20 23:30:32 +00:00
Dan Gohman
3517f425b8 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
Sean Callanan
78ee7f5d57 Recommitting PALIGNR shift width fixes. 
Thanks to Daniel Dunbar for fixing clang intrinsics:
  http://llvm.org/viewvc/llvm-project?view=rev&revision=89499

llvm-svn: 89500
 2009-11-20 22:28:42 +00:00