Commit Graph

22802 Commits

Author SHA1 Message Date
Chris Lattner cb853de534 a previous patch completely disabled trivial unswitching, this fixees it.
Thanks to nate for pointing this out :)

llvm-svn: 26280
2006-02-18 01:32:04 +00:00
Chris Lattner 29f771ba21 initial trivial support for folding branches that have now-constant destinations.
llvm-svn: 26279
2006-02-18 01:27:45 +00:00
Evan Cheng 5caed8a231 Jit does not support PIC yet.
llvm-svn: 26278
2006-02-18 00:57:10 +00:00
Chris Lattner 8e44ff50b0 When unswitching a loop, make sure to update loop info with exit blocks in
the right loop.

llvm-svn: 26277
2006-02-18 00:55:32 +00:00
Chris Lattner d95665188b Fix Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll
llvm-svn: 26275
2006-02-18 00:33:17 +00:00
Chris Lattner 88b8e3bb71 new testcase that crashes simplifycfg
llvm-svn: 26274
2006-02-18 00:32:44 +00:00
Evan Cheng 5588de9415 x86 / Darwin PIC support.
llvm-svn: 26273
2006-02-18 00:15:05 +00:00
Evan Cheng 5f99760ae7 Moved PICEnabled to include/llvm/Target/TargetOptions.h
llvm-svn: 26272
2006-02-18 00:08:58 +00:00
Evan Cheng 94a8bd4290 Move PICEnabled declaration here.
llvm-svn: 26271
2006-02-18 00:06:03 +00:00
Chris Lattner 375e1a71cc 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.

llvm-svn: 26269
2006-02-17 21:58:01 +00:00
Chris Lattner 4a717bbbfb add a new method
llvm-svn: 26268
2006-02-17 21:57:00 +00:00
Nate Begeman 8d0e47a017 A few final (for now) tests
llvm-svn: 26267
2006-02-17 21:38:45 +00:00
Nate Begeman 6aee554aa1 Yet another test
llvm-svn: 26266
2006-02-17 21:32:46 +00:00
Nate Begeman 5e176da364 New tests!
llvm-svn: 26265
2006-02-17 21:22:08 +00:00
Robert Bocchino 820bc75b8b Added documentation for vset and vselect.
llvm-svn: 26264
2006-02-17 21:18:08 +00:00
Nate Begeman fb5dbadf15 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

llvm-svn: 26263
2006-02-17 19:54:08 +00:00
Nate Begeman 1d7d611ba4 Fix a nit sabre noticed
llvm-svn: 26262
2006-02-17 18:06:19 +00:00
Nate Begeman 57b3567552 Don't expand sdiv by power of two before legalize, since it will likely
generate illegal nodes.

llvm-svn: 26261
2006-02-17 07:26:20 +00:00
Chris Lattner 07a2677e43 unbreak the build
llvm-svn: 26260
2006-02-17 07:09:27 +00:00
Evan Cheng 593bea73ba Unbreak x86 be
llvm-svn: 26259
2006-02-17 07:01:52 +00:00
Chris Lattner baddba41c7 Fix loops where the header has an exit, fixing a loop-unswitch crash on crafty
llvm-svn: 26258
2006-02-17 06:39:56 +00:00
Nate Begeman 42c9e4df6f Fix a comment sabre noticed :)
llvm-svn: 26257
2006-02-17 06:24:31 +00:00
Nate Begeman 669ad7ea19 A couple new regression tests to make sure we always pattern match the new
opcodes on ppc.

llvm-svn: 26256
2006-02-17 06:16:56 +00:00
Nate Begeman 5965bd19f8 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.

llvm-svn: 26255
2006-02-17 05:43:56 +00:00
Chris Lattner 9ec392b2aa 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).

llvm-svn: 26254
2006-02-17 04:32:33 +00:00
Chris Lattner 67c21b6c46 add note about div by power of 2
llvm-svn: 26253
2006-02-17 04:20:13 +00:00
Jeff Cohen 0d62ebd13f Fix bug noticed by VC++.
llvm-svn: 26252
2006-02-17 02:12:18 +00:00
Jeff Cohen ac8b761b62 Inform Visual Studio of deleted file.
llvm-svn: 26251
2006-02-17 02:11:34 +00:00
Nate Begeman 3920ce4d8d Whoops, didn't mean to check this in yet.
llvm-svn: 26250
2006-02-17 00:56:19 +00:00
Nate Begeman 4a0dc0c8f6 Add a missing and useful pat frag
llvm-svn: 26249
2006-02-17 00:51:06 +00:00
Chris Lattner 6fd136239b start of some new simplification code, not thoroughly tested, use at your own
risk :)

llvm-svn: 26248
2006-02-17 00:31:07 +00:00
Evan Cheng b590d3a72b Remind ourselves to revisit the "pxor vs. xorps/xorpd to clear XMM registers"
issue. Need to do more experiments.

llvm-svn: 26247
2006-02-17 00:04:28 +00:00
Nate Begeman 7e5496d5fe Kill the x86 pattern isel. boom.
llvm-svn: 26246
2006-02-17 00:03:04 +00:00
Evan Cheng db1dbbe8d6 Remove the entry about using movapd for SSE reg-reg moves.
llvm-svn: 26245
2006-02-17 00:00:58 +00:00
Evan Cheng eb7b3380fd pxor (for FLD0SS) encoding was missing the OpSize prefix.
llvm-svn: 26244
2006-02-16 23:59:30 +00:00
Chris Lattner 936cc9fe53 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 :)

llvm-svn: 26243
2006-02-16 23:14:50 +00:00
Evan Cheng c3dcf5a4d7 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.

llvm-svn: 26242
2006-02-16 23:11:42 +00:00
Evan Cheng 24c461b51e 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.

llvm-svn: 26241
2006-02-16 22:45:17 +00:00
Evan Cheng 3f99628939 Use movaps / movapd to spill / restore V4F4 / V2F8 registers.
llvm-svn: 26240
2006-02-16 21:20:26 +00:00
Chris Lattner 3d22a090cf remove skeleton target
llvm-svn: 26239
2006-02-16 21:12:54 +00:00
Nate Begeman 8a77efe4f7 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.

llvm-svn: 26238
2006-02-16 21:11:51 +00:00
Chris Lattner 4382d8e8d9 don't build the skeleton target
llvm-svn: 26237
2006-02-16 21:11:49 +00:00
Chris Lattner e5002f3e09 remove support for the skeleton target
llvm-svn: 26236
2006-02-16 21:10:57 +00:00
Chris Lattner fa335f6083 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.

llvm-svn: 26235
2006-02-16 19:36:22 +00:00
Evan Cheng 01afec2adb MOVAPSrr and MOVAPDrr instruction format should be MRMSrcReg.
llvm-svn: 26234
2006-02-16 19:34:41 +00:00
Duraid Madina 36a2ee299e 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

llvm-svn: 26232
2006-02-16 13:12:57 +00:00
Evan Cheng 42c01c8d39 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.

llvm-svn: 26231
2006-02-16 08:27:56 +00:00
Chris Lattner 471627c49d Lowering of sdiv X, pow2 was broken, this fixes it. This patch is written
by Nate, I'm just committing it for him.

llvm-svn: 26230
2006-02-16 08:02:36 +00:00
Chris Lattner 1e6128254c Fix a minor makefile bug with lex/yacc handling that nate noticed. We don't
want to copy the files when the .cpp file changes, we want to copy them
to the .cvs versions when the .l/.y file change (like the comments even say).
This avoids having bogus changes show up in diffs.

llvm-svn: 26229
2006-02-16 05:10:48 +00:00
Jeff Cohen 55f63f1b53 Fix VC++ warning.
llvm-svn: 26228
2006-02-16 04:07:37 +00:00