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13074 Commits

Author SHA1 Message Date
Chris Lattner
9b6fb5de49 This fixes a couple of problems with expansion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26318 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-22 23:09:03 +00:00
Chris Lattner
b3befd41b4 Don't return registers from register classes that aren't legal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26317 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-22 23:00:51 +00:00
Chris Lattner
864635ad7b Change a whole bunch of code to be built around RegsForValue instead of 
a single register number.  This fully implements promotion for inline asms,
expand is close but not quite right yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26316 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-22 22:37:12 +00:00
Evan Cheng
4c1aa86657 - Added option -relocation-model to set relocation model. Valid values include static, pic, 
dynamic-no-pic, and default.
PPC and x86 default is dynamic-no-pic for Darwin, pic for others.
- Removed options -enable-pic and -ppc-static.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26315 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-22 20:19:42 +00:00
Jim Laskey
0420f2aaf9 Coordinate activities with llvm-gcc4 and dwarf. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26314 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-22 19:02:11 +00:00
Chris Lattner
bd28e3f8ef Add some comments, simplify some code, and fix a bug that caused rewriting 
to rewrite with the wrong value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26311 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-22 06:37:14 +00:00
Evan Cheng
470a6adc78 Added MMX, SSE1, and SSE2 vector instructions and some simple patterns. 
Fixed some existing bugs (wrong predicates, prefixes) at the same time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26310 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-22 02:26:30 +00:00
Chris Lattner
1efa40f6a4 split register class handling from explicit physreg handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26308 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-22 00:56:39 +00:00
Chris Lattner
0f0b7d4927 Adjust to changes in getRegForInlineAsmConstraint prototype 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26306 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 23:12:12 +00:00
Chris Lattner
4217ca8dc1 Updates to match change of getRegForInlineAsmConstraint prototype 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26305 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 23:11:00 +00:00
Evan Cheng
4e4c71e423 One more round of reorg so sabre doesn't freak out. :-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26303 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 20:00:20 +00:00
Evan Cheng
beb07e117d A big more cleaning up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26302 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 19:30:30 +00:00
Evan Cheng
bf156d1ae6 Moving things to their proper places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26301 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 19:26:52 +00:00
Evan Cheng
ffcb95beab Split instruction info into multiple files, one for each of x87, MMX, and SSE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26300 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 19:13:53 +00:00
Chris Lattner
a1532bc283 missed optzn 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26299 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 18:29:44 +00:00
Chris Lattner
2deb87f201 The HasNoV9 hack isn't needed here, now that tblgen knows that CustomDAGSchedInserter 
instructions are expensive.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26298 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 18:04:32 +00:00
Evan Cheng
747a90d887 Added separate alias instructions for SSE logical ops that operate on non-packed types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26297 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 02:24:38 +00:00
Evan Cheng
7dbc0a3351 Added MMX and XMM packed integer move instructions, movd and movq. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26296 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 01:39:57 +00:00
Evan Cheng
933be3318b Added SSE2 128-bit integer packed types: V16I8, V8I16, V4I32, and V2I64. 
Added generic vector types: VR64 and VR128.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26295 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-21 01:38:21 +00:00
Evan Cheng
aea20f50e5 Added x86 integer vector types: 64-bit packed byte integer (v16i8), 64-bit 
packed word integer (v8i16), and 64-bit packed doubleword integer (v2i32).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26294 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-20 22:34:53 +00:00
Evan Cheng
755ee8f9aa Some updates 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26292 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-20 19:58:27 +00:00
Chris Lattner
7d20d39009 Fix a problem Nate and Duraid reported where simplifying nodes can cause 
them to get ressurected, in which case, deleting the undead nodes is
unfriendly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26291 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-20 06:51:04 +00:00
Chris Lattner
dca7abed91 Fix a problem on itanium with memset. The value to set has been promoted to 
i64 before this code, so zero_ext doesn't work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26290 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-20 06:38:35 +00:00
Chris Lattner
a6fc94b71e improved support for branch folding, still not enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26289 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 07:57:38 +00:00
Evan Cheng
45af8fd8c2 If SSE3 is available, promote FP_TO_UINT i32 to FP_TO_SINT i64 to take 
advantage of fisttpll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26288 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 07:26:17 +00:00
Jeff Cohen
bce4805d6f Fix bugs identified by VC++. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26287 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 03:20:33 +00:00
Nate Begeman
003a272319 Add a fold for add that exchanges it with a constant shift if possible, so 
that the shift may be more easily folded into other operations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26286 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 02:43:25 +00:00
Chris Lattner
db41024a85 Implement deletion of dead blocks, currently disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26285 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 02:42:34 +00:00
Nate Begeman
b0d04a7dea Add checks to make sure we don't create bogus extend nodes, and fix a bug 
where we were doing exactly that which was causing failures on x86 and
alpha.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26284 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 02:40:58 +00:00
Evan Cheng
2b15271571 Added fisttp for fp to int conversion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26283 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 02:36:28 +00:00
Evan Cheng
6428302f3d Disable PIC for JIT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26281 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 01:49:25 +00:00
Chris Lattner
caf4893536 a previous patch completely disabled trivial unswitching, this fixees it. 
Thanks to nate for pointing this out :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26280 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 01:32:04 +00:00
Chris Lattner
f4412d890d initial trivial support for folding branches that have now-constant destinations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26279 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 01:27:45 +00:00
Evan Cheng
5e8b5558f7 Jit does not support PIC yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26278 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 00:57:10 +00:00
Chris Lattner
25cae0fd1c When unswitching a loop, make sure to update loop info with exit blocks in 
the right loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26277 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 00:55:32 +00:00
Chris Lattner
299520de7c Fix Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26275 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 00:33:17 +00:00
Evan Cheng
7ccced634a x86 / Darwin PIC support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26273 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 00:15:05 +00:00
Evan Cheng
d2ee218b49 Moved PICEnabled to include/llvm/Target/TargetOptions.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26272 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-18 00:08:58 +00:00
Chris Lattner
012f241987 Fix a tricky issue in the SimplifyDemandedBits code where CombineTo wasn't 
exactly the API we wanted to call into.  This fixes the crash on crafty last
night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26269 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 21:58:01 +00:00
Nate Begeman
fb7217bea3 Clean up DemandedBitsAreZero interface 
Make more use of the new mask helpers in valuetypes.h
Combine (sra (srl x, c1), c1) -> sext_inreg if legal


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26263 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 19:54:08 +00:00
Nate Begeman
cd6a6ed0a9 Don't expand sdiv by power of two before legalize, since it will likely 
generate illegal nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26261 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 07:26:20 +00:00
Chris Lattner
c2fe97e726 unbreak the build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26260 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 07:09:27 +00:00
Evan Cheng
5298bcc722 Unbreak x86 be 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26259 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 07:01:52 +00:00
Chris Lattner
0017d480cc Fix loops where the header has an exit, fixing a loop-unswitch crash on crafty 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26258 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 06:39:56 +00:00
Nate Begeman
551bf3f800 kill ADD_PARTS & SUB_PARTS and replace them with fancy new ADDC, ADDE, SUBC 
and SUBE nodes that actually expose what's going on and allow for
significant simplifications in the targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26255 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 05:43:56 +00:00
Chris Lattner
25125697fb Fix another miscompilation exposed by lencode, where we lowered i64->f32 
conversions to __floatdidf instead of __floatdisf on targets that support
f32 but not i64 (e.g. sparc).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26254 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 04:32:33 +00:00
Chris Lattner
a648df2871 add note about div by power of 2 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26253 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 04:20:13 +00:00
Jeff Cohen
5755b17044 Fix bug noticed by VC++. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26252 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 02:12:18 +00:00
Nate Begeman
9c3c2e9686 Whoops, didn't mean to check this in yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26250 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 00:56:19 +00:00
Nate Begeman
c22f357b78 Add a missing and useful pat frag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26249 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 00:51:06 +00:00
Chris Lattner
52221f7b16 start of some new simplification code, not thoroughly tested, use at your own 
risk :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26248 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 00:31:07 +00:00
Evan Cheng
7634ac4a9b Remind ourselves to revisit the "pxor vs. xorps/xorpd to clear XMM registers" 
issue. Need to do more experiments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26247 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 00:04:28 +00:00
Nate Begeman
4c5dcf54ff Kill the x86 pattern isel. boom. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26246 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 00:03:04 +00:00
Evan Cheng
dc8acb6420 Remove the entry about using movapd for SSE reg-reg moves. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26245 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-17 00:00:58 +00:00
Evan Cheng
39d1761c70 pxor (for FLD0SS) encoding was missing the OpSize prefix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26244 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 23:59:30 +00:00
Chris Lattner
6a6eb7b622 Remove the skeleton target, it doesn't produce useful code and there are 
other small targets that do that can be learned from.  They also have
the added advantage of being tested :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26243 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 23:14:50 +00:00
Evan Cheng
cffbb5174f Dumb bug. Code sees a memcpy from X+c so it increments src offset. But it 
turns out not to point to a constant string but it forgot change the offset
back.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26242 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 23:11:42 +00:00
Evan Cheng
fe5cb19405 1. Use pxor instead of xoraps / xorapd to clear FR32 / FR64 registers. This 
proves to be worth 20% on Ptrdist/ks. Might be related to dependency
   breaking support.
2. Added FsMOVAPSrr and FsMOVAPDrr as aliases to MOVAPSrr and MOVAPDrr. These
   are used for FR32 / FR64 reg-to-reg copies.
3. Tell reg-allocator to generate MOVSSrm / MOVSDrm and MOVSSmr / MOVSDmr to
   spill / restore FsMOVAPSrr and FsMOVAPDrr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26241 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 22:45:17 +00:00
Evan Cheng
19ade3bf9c Use movaps / movapd to spill / restore V4F4 / V2F8 registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26240 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 21:20:26 +00:00
Nate Begeman
368e18d56a Rework the SelectionDAG-based implementations of SimplifyDemandedBits 
and ComputeMaskedBits to match the new improved versions in instcombine.
Tested against all of multisource/benchmarks on ppc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26238 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 21:11:51 +00:00
Chris Lattner
10cd9bbde7 Change SplitBlock to increment a BasicBlock::iterator, not an Instruction*. Apparently they do different things :) 
This fixes a testcase that nate reduced from spass.

Also included are a couple minor code changes that don't affect the generated
code at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26235 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 19:36:22 +00:00
Evan Cheng
77dea9b3c3 MOVAPSrr and MOVAPDrr instruction format should be MRMSrcReg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26234 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 19:34:41 +00:00
Duraid Madina
00d3d44b75 distinguish between objects and register names, now we can have stuff 
with names like "f84", "in6" etc etc.

this should fix one or two tests


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26232 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 13:12:57 +00:00
Evan Cheng
298ebf2bd8 If the false case is the current basic block, then this is a self loop. 
We do not want to emit "Loop: ... brcond Out; br Loop", as it adds an extra
instruction in the loop.  Instead, invert the condition and emit
"Loop: ... br!cond Loop; br Out.

Generalize the fix by moving it from PPCDAGToDAGISel to SelectionDAGLowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26231 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 08:27:56 +00:00
Chris Lattner
8f4880be66 Lowering of sdiv X, pow2 was broken, this fixes it. This patch is written 
by Nate, I'm just committing it for him.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26230 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 08:02:36 +00:00
Jeff Cohen
21c107ab0f Fix VC++ warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26228 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 04:07:37 +00:00
Evan Cheng
d51425a82d Use movaps / movapd (instead of movss / movsd) to do FR32 / FR64 reg to reg 
transfer.

According to the Intel P4 Optimization Manual:

Moves that write a portion of a register can introduce unwanted
dependences. The movsd reg, reg instruction writes only the bottom
64 bits of a register, not to all 128 bits. This introduces a dependence on
the preceding instruction that produces the upper 64 bits (even if those
bits are not longer wanted). The dependence inhibits register renaming,
and thereby reduces parallelism.

Not to mention movaps is shorter than movss.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26226 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 01:50:02 +00:00
Chris Lattner
f17c42d409 fix a bug where we unswitched the wrong way 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26225 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 01:24:41 +00:00
Evan Cheng
18a8452f3d 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26224 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-16 00:21:07 +00:00
Chris Lattner
a48654ef23 Implement trivial unswitching for switch stmts. This allows us to trivial 
unswitch this loop on 2 before sweating to unswitch on 1/3.

void test4(int N, int i, int C, int*P, int*Q) {
  int j;
  for (j = 0; j < N; ++j) {
    switch (C) {                // general unswitching.
    default: P[i+j] = 0; break;
    case 1: Q[i+j] = 0; break;
    case 3: P[i+j] = Q[i+j]; break;
    case 2: break;              //  TRIVIAL UNSWITCH on C==2
    }
  }
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26223 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 22:52:05 +00:00
Evan Cheng
fe1c31204e Remove an entry. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26222 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 22:14:34 +00:00
Evan Cheng
a47876d87a Remove an unused function parameter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26221 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 22:12:35 +00:00
Chris Lattner
4e1323969c make "trivial" unswitching significantly more general. It can now handle 
this for example:

  for (j = 0; j < N; ++j) {     // trivial unswitch
    if (C)
      P[i+j] = 0;
  }

turning it into the obvious code without bothering to duplicate an empty loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26220 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 22:03:36 +00:00
Evan Cheng
74d0aa9a4b Turn a memcpy from string constant into a series of stores of constant values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26219 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 21:59:04 +00:00
Andrew Lenharth
2f9859486a fix a bunch of alpha regressions. see bug 709 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26218 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 21:13:37 +00:00
Chris Lattner
5946fef1db new test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26217 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 19:52:06 +00:00
Jim Laskey
d0e58e36a9 Should not combine ISD::LOCATIONs until we have scheme to remove from 
MachineDebugInfo tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26216 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 19:34:44 +00:00
Chris Lattner
3fdde110eb Checking the wrong value. This caused us to emit silly code like 
Y = seteq bool X, true
instead of just using X :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26215 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 19:05:52 +00:00
Chris Lattner
58af2a1c5f Convert this over to work with the new makefiles 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26206 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 07:22:58 +00:00
Chris Lattner
45090476be Sparc actually *DOES* have a directive for emitting zeros. In fact, it requires 
it, because this:

.bss
X:
.byte 0

results in the assembler warning: "initialization in bss segment".  Annoying.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26204 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 07:07:14 +00:00
Chris Lattner
2fecc0f9e2 random lexer change to test the makefile updating stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26203 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 07:02:59 +00:00
Chris Lattner
6fa1f57c66 Fix SingleSource/Regression/C/2004-08-12-InlinerAndAllocas.c on Sparc. 
The ABI specifies that there is a register save area at the bottom of the
stack, which means the actual used pointer needs to be an offset from
the subtracted value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26202 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 06:41:34 +00:00
Evan Cheng
2354f5a46b Remove an entry. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26197 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 01:56:48 +00:00
Evan Cheng
17ef92eda7 Use .zerofill on x86/darwin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26196 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 01:56:23 +00:00
Evan Cheng
c080d6fb3d Lower memcpy with small constant size operand into a series of load / store 
ops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26195 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 01:54:51 +00:00
Chris Lattner
6d9d13d2e4 more refactoring, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26194 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 01:44:42 +00:00
Evan Cheng
f3f0a9c587 cvtsd2ss / cvtss2sd encoding bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26193 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 00:31:03 +00:00
Evan Cheng
7335f9beea movaps, movapd encoding bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26192 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 00:11:37 +00:00
Chris Lattner
fed5d9dbd3 pull some code out into a function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26191 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-15 00:07:43 +00:00
Chris Lattner
0ab9f966de Canonicalize inner loops before outer loops. Inner loop canonicalization 
can provide work for the outer loop to canonicalize.

This fixes a case that breaks unswitching.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26189 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 23:06:02 +00:00
Evan Cheng
dea7245997 Doh again! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26188 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 23:05:54 +00:00
Chris Lattner
c27e056d4f When splitting exit edges to canonicalize loops, make sure to put the new 
block in the appropriate loop nest.

Third time is the charm, right?


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26187 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 22:34:08 +00:00
Chris Lattner
ae302ab9cb new note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26186 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 22:19:54 +00:00
Chris Lattner
0d7db6f79a If we have zero initialized data with external linkage, use .zerofill to 
emit it (instead of .space), saving a bit of space in the .o file.

For example:
int foo[100];
int bar[100] = {};

when compiled with C++ or -fno-common results in shrinkage from 1160 to 360
bytes of space.  The X86 backend can also do this on darwin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26185 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 22:18:23 +00:00
Jim Laskey
ae9a84b9be Using wrong DW_FORM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26184 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 22:01:57 +00:00
Evan Cheng
ee50a1ae27 Don't special case XS, XD prefixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26183 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 21:52:51 +00:00
Evan Cheng
576c141921 Bug fix: XS, XD prefixes were being emitted twice. 
XMM registers were not being handled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26182 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 21:45:24 +00:00
Chris Lattner
33d5082779 Make sure that weak functions are aligned properly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26181 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 20:42:33 +00:00
Evan Cheng
ddf7532442 Duh 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26180 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 20:37:37 +00:00
Evan Cheng
968c178172 Remove -disable-x86-sse 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26179 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 20:30:14 +00:00
Chris Lattner
60330ff193 add an assert 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26178 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 20:14:17 +00:00
Evan Cheng
c4f8eee054 Keep to < 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26177 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 20:12:38 +00:00
Evan Cheng
ac940ab1bf Missed a break so memcpy cases fell through to memset. Doh. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26176 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 19:45:56 +00:00
Evan Cheng
80e89d7d6c Fixed a build breakage. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26175 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 09:11:59 +00:00
Evan Cheng
a03a5dc7ce Rename maxStoresPerMemSet to maxStoresPerMemset, etc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26174 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 08:38:30 +00:00
Evan Cheng
952b7d6a1e Add a entry. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26173 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 08:25:32 +00:00
Evan Cheng
87ed716d21 Set maxStoresPerMemSet to 16. Ditto for maxStoresPerMemCpy and 
maxStoresPerMemMove. Although the last one is not used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26172 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 08:25:08 +00:00
Evan Cheng
1db92f947c Expand memset dst, c, size to a series of stores if size falls below the 
target specific theshold, e.g. 16 for x86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26171 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 08:22:34 +00:00
Evan Cheng
82eaf628b4 Enable SSE (for the right subtargets) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26169 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 08:07:58 +00:00
Chris Lattner
06a248c9b3 now that libcalls don't suck, we can remove this hack 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26164 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 05:39:35 +00:00
Chris Lattner
32eecb09a2 adjust to new style of handling lexer changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26162 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 05:14:46 +00:00
Chris Lattner
3dd4c402de Use statistics to keep track of what flavors of loops we are unswitching 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26157 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 01:01:41 +00:00
Chris Lattner
4b653a0405 Fix a latent bug in the call sequence handling stuff. Some targets (e.g. x86) 
create these nodes with flag results.  Remember that we legalized them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26156 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-14 00:55:02 +00:00
Chris Lattner
2082ad9b41 Implement Instcombine/and.ll:test34 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26155 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 23:07:23 +00:00
Chris Lattner
f345fe4d9a If any of the sign extended bits are demanded, the input sign bit is demanded 
for a sign extension.

This fixes InstCombine/2006-02-13-DemandedMiscompile.ll and Ptrdist/bc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26152 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 22:41:07 +00:00
Chris Lattner
f9a05329a1 Another hack due to allowing multiple symbols with the same name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26150 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 22:22:42 +00:00
Chris Lattner
ed1e1e232f Another work around for the 'symbols with different types can have the same 
name' issue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26149 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 21:43:26 +00:00
Andrew Lenharth
40ec5037fa improved zap discovery 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26148 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 18:52:29 +00:00
Jim Laskey
d96185aa62 Rename to better reflect usage (current and planned.) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26145 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 12:50:39 +00:00
Chris Lattner
6831a81599 Completely rewrite libcall insertion by the legalizer, providing the 
following handy-dandy properties:

1. it is always correct now
2. it is much faster than before
3. it is easier to understand

This implementation builds off of the recent simplifications of the
legalizer that made it single-pass instead of iterative.

This fixes JM/lencod, JM/ldecod, and
CodeGen/Generic/2006-02-12-InsertLibcall.ll (at least on PPC).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26144 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 09:18:02 +00:00
Chris Lattner
94dd29216c Switch targets over to using SelectionDAG::getCALLSEQ_START to create 
CALLSEQ_START nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26143 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 09:00:43 +00:00
Chris Lattner
45b3976db7 Switch to using getCALLSEQ_START instead of using our own creation calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26142 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 08:55:29 +00:00
Chris Lattner
c15637bafc Be careful not to request or look at bits shifted in from outside the size 
of the input.  This fixes the mediabench/gsm/toast failure last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26138 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-13 06:09:08 +00:00
Nate Begeman
789fd42320 Add missing patterns for andi. and andis., fixing test/Regression/CodeGen/ 
PowerPC/and-imm.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26136 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-12 09:09:52 +00:00
Chris Lattner
8d6bbdbbcb remove some more dead special case code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26135 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-12 08:07:37 +00:00
Chris Lattner
f8c36f502b Eliminate special case hacks that are superceded by general purpose hacks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26134 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-12 08:02:11 +00:00
Chris Lattner
bf5d8a8270 Three changes: 
1. Teach GetConstantInType to handle boolean constants.
2. Teach instcombine to fold (compare X, CST) when X has known 0/1 bits.
   Testcase here: set.ll:test22
3. Improve the "(X >> c1) & C2 == 0" folding code to allow a noop cast
   between the shift and and.  More aggressive bitfolding for other reasons
   was turning signed shr's into unsigned shr's, leaving the noop cast in
   the way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26131 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-12 02:07:56 +00:00
Chris Lattner
ee628cfefb Revert my last patch. It too breaks stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26128 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-12 01:59:10 +00:00
Chris Lattner
d308ddcd67 Fix for my previously reverted patch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26126 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 21:24:54 +00:00
Chris Lattner
255d8919b6 Port the recent innovations in ComputeMaskedBits to SimplifyDemandedBits. 
This allows us to simplify on conditions where bits are not known, but they
are not demanded either!  This also fixes a couple of bugs in
ComputeMaskedBits that were exposed during this work.

In the future, swaths of instcombine should be removed, as this code
subsumes a bunch of ad-hockery.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26122 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 09:31:47 +00:00
Chris Lattner
5077c7be92 revert my previous change, it exposed other problems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26121 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 08:47:47 +00:00
Duraid Madina
b20f97959e fix storing booleans (grawp missed this one) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26120 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 07:33:17 +00:00
Duraid Madina
631a140054 now short immediates will get matched (previously constants were all 
triggering movl 64bit imm fat instructions)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26119 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 07:32:15 +00:00
Chris Lattner
8587eb3a51 Make this check stricter. Disallow loop exit blocks from being shared by 
loops and their subloops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26118 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 02:13:17 +00:00
Evan Cheng
2486af1b53 Prevent certain nodes that have already been selected from being folded into 
X86 addressing mode. Currently we do not allow any node whose target node
produces a chain as well as any node that is at the root of the addressing
mode expression tree.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26117 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 02:05:36 +00:00
Chris Lattner
441365c46e remove dead expr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26116 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 01:43:37 +00:00
Jim Laskey
ce72b1755f Reorg for integration with gcc4. Old style debug info will not be passed though 
to SelIDAG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26115 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 01:01:30 +00:00
Chris Lattner
c23580969f implement unswitching of loops with switch stmts and selects in them 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26114 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-11 00:43:37 +00:00
Chris Lattner
e825593bf2 Update PHI nodes in successors of exit blocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26113 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 23:26:14 +00:00
Chris Lattner
b2bc315eac Reform the unswitching code in terms of edge splitting, not block splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26112 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 23:16:39 +00:00
Evan Cheng
23addc061c Nicer code. :-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26111 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 22:46:26 +00:00
Evan Cheng
f597dc78f8 Added X86 isel debugging stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26110 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 22:24:32 +00:00
Chris Lattner
81be2e961b Fix a case where UnswitchTrivialCondition broke critical edges with 
phi's in the successors


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26108 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 19:08:15 +00:00
Chris Lattner
ad7a3e6208 Use the auto-generated call matcher. Remove a broken impl of the frameaddr/returnaddr 
intrinsics.

Autogen frameindex matcher


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26107 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 07:35:42 +00:00
Chris Lattner
f613fcb741 Update to new-style flags usage, simplifying the .td file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26106 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 06:58:25 +00:00
Evan Cheng
c57e5c17bc Remove a completed entry; add a new entry about fisttp op 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26105 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 05:48:15 +00:00
Chris Lattner
708e1a5c9c add some notes, move some code around. Implement unswitching of loops 
with branches on partially invariant computations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26104 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 02:30:37 +00:00
Chris Lattner
dd3ee6d086 Move code around to be more logical, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26103 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 02:01:22 +00:00
Chris Lattner
4d1ca946ea When unswitching a trivial loop, do admit we are doing it! :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26102 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 01:36:35 +00:00
Chris Lattner
4c41d49a92 Implement unconditional unswitching of 'trivial' loops, those loops that contain 
branches in their entry block that control whether or not the loop is a noop or not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26101 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-02-10 01:24:09 +00:00