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Author SHA1 Message Date
Owen Anderson 48e93f2ce9 clean() needs to process things in topological order. 
llvm-svn: 37389
 2007-06-01 22:00:37 +00:00
Evan Cheng 9aa5fc8577 Opcode modifier s comes after condition code. e.g. addlts, not addslt. 
llvm-svn: 37388
 2007-06-01 20:51:29 +00:00
Evan Cheng 4dcf1e8582 Correctly mark early-exit on the false path. 
llvm-svn: 37387
 2007-06-01 20:29:21 +00:00
Owen Anderson 4c89142466 Fix Expression comparison, which in turn fixes a value numbering error. 
llvm-svn: 37386
 2007-06-01 17:34:47 +00:00
Evan Cheng 256144de4a Set ARM ifcvt duplication limit to 3 for now. 
llvm-svn: 37385
 2007-06-01 08:28:59 +00:00
Duncan Sands 706421e712 Since TypeInfos are passed as i8 pointers, a NULL TypeInfo should be passed 
as a null i8 pointer not as a 0 i32.

llvm-svn: 37383
 2007-06-01 08:18:30 +00:00
Evan Cheng 6a2cf070cc Ifcvt triangle: don't ifcvt 'true' BB if it has other predecessors; don't merge 'false' BB if it has other predecessors. 
llvm-svn: 37382
 2007-06-01 07:41:07 +00:00
Evan Cheng a2ab4e5feb Make jumptable non-predicable for now. 
llvm-svn: 37381
 2007-06-01 00:56:15 +00:00
Evan Cheng 95c7917d92 Remove a bogus check. Even terminators in a ifcvt need to be predicated. Unconditional branches can usually be converted to conditional ones. 
llvm-svn: 37380
 2007-06-01 00:55:26 +00:00
Evan Cheng 20e05997f5 Allow multiple ifcvt candidates to share children blocks; add some debugging code. 
llvm-svn: 37379
 2007-06-01 00:12:12 +00:00
Owen Anderson 331bf6a959 Add a topological sort function. 
llvm-svn: 37376
 2007-05-31 22:44:11 +00:00
Dale Johannesen 1a401e68a8 Arrange for only 1 of multiple branches to landing pad to be kept. 
Do not remove empty landing pads (EH table needs to be updated)

llvm-svn: 37375
 2007-05-31 21:54:00 +00:00
Evan Cheng e6ccb6c5ed Fix a typo. 
llvm-svn: 37374
 2007-05-31 20:53:33 +00:00
Chris Lattner 3e3ff30aa2 Fix the asmprinter so that a globalvalue can specify an explicit alignment 
smaller than the preferred alignment, but so that the target can actually
specify a minimum alignment if needed.  This fixes some objc protocol
failures Devang tracked down.

llvm-svn: 37373
 2007-05-31 18:57:45 +00:00
Lauro Ramos Venancio 5b0757a401 Fix PR1424. 
When a function has FP, the register scavenging spill slot offset already
was calculated.

llvm-svn: 37371
 2007-05-31 18:27:58 +00:00
Owen Anderson 81d156e16f Attempt to fix up phi_translate. 
llvm-svn: 37366
 2007-05-31 00:42:15 +00:00
Evan Cheng 905a8f4940 Change traversal order to bottom up in preparation for more aggressive if-conversion. 
llvm-svn: 37365
 2007-05-30 19:49:19 +00:00
Chris Lattner 397c4d9ef6 Fix CodeGen/PowerPC/2007-05-30-dagcombine-miscomp.ll, and PR1473. 
llvm-svn: 37362
 2007-05-30 16:30:06 +00:00
Devang Patel 9b3b35d14f Fix typo. 
llvm-svn: 37360
 2007-05-30 15:29:37 +00:00
Chris Lattner 8767920f20 Fix Transforms/ScalarRepl/2007-05-29-MemcpyPreserve.ll and the second 
half of PR1421, by not decimating structs with holes that are the source and
destination of a memcpy.

llvm-svn: 37358
 2007-05-30 06:11:23 +00:00
Dale Johannesen d14ad078c6 Changed per review comment. 
llvm-svn: 37355
 2007-05-30 00:32:01 +00:00
Dale Johannesen a69ebdbebc Make stable_sort in tail merging actually be stable (it never was, but didn't 
matter until my last change).  Reenable tail merging by default.

llvm-svn: 37354
 2007-05-29 23:47:50 +00:00
Evan Cheng 20f7d30f92 Don't merge in tail block of a diamond if it has more than one predecessors after if-conversion. 
llvm-svn: 37353
 2007-05-29 23:37:20 +00:00
Evan Cheng 19eeee41ca For VFP2 fldm, fstm instructions, the condition code is printed after the address mode and size specifier. e.g. fstmiaseq, not fstmeqias. 
llvm-svn: 37351
 2007-05-29 23:34:19 +00:00
Owen Anderson 4b0c1859fd Fix a typo 
llvm-svn: 37350
 2007-05-29 23:34:14 +00:00
Evan Cheng a6e9a4ce07 For ldrb, strh, etc., the condition code is before the width specifier. e.g. streqh, not strheq. 
llvm-svn: 37349
 2007-05-29 23:32:06 +00:00
Owen Anderson 0c4230724c Re-fix a bug, where I was now being too aggressive. 
llvm-svn: 37348
 2007-05-29 23:26:30 +00:00
Owen Anderson 4a6ec8fb57 Use proper debugging facilities so other people don't have to look at my commented-out 
debugging lines.

llvm-svn: 37347
 2007-05-29 23:15:21 +00:00
Owen Anderson f11bdc7637 Comment debug code out that I accidentally uncommented last time. 
llvm-svn: 37346
 2007-05-29 22:43:03 +00:00
Owen Anderson ac83a3e4ff Add a place where I missed using the maximal set. Note that using the maximal 
set this way is _SLOW_.  Somewhere down the line, I'll look at speeding it up.

llvm-svn: 37345
 2007-05-29 22:35:41 +00:00
Evan Cheng c2237ce217 If there is an empty block between a source and its successor block, it still requires a unconditional branch. 
llvm-svn: 37344
 2007-05-29 22:31:16 +00:00
Owen Anderson 5fba6c19b2 Very first part of a GVN-PRE implementation. It currently performs a bunch of analysis, and nothing more. It is also quite slow for the moment. However, 
it should give a sense of what's going on.

llvm-svn: 37343
 2007-05-29 21:53:49 +00:00
Evan Cheng 2d91a4fd6a Add missing const qualifiers. 
llvm-svn: 37342
 2007-05-29 18:42:18 +00:00
Evan Cheng 5983bdbb2c Add missing const qualifiers. 
llvm-svn: 37341
 2007-05-29 18:35:22 +00:00
Nicolas Geoffray cff3e122b0 Implementation of compilation callback in PPC ELF32 
llvm-svn: 37340
 2007-05-29 16:33:18 +00:00
Zhou Sheng d7dc1ed64c Correct the logic in LowerPartSet which cleared the bits from 0 to low-1. 
llvm-svn: 37331
 2007-05-26 03:43:13 +00:00
Chris Lattner 4698083b96 tighten up recursion depth again 
llvm-svn: 37330
 2007-05-25 02:19:06 +00:00
Evan Cheng 13f5f7df95 Silly boog. 
llvm-svn: 37328
 2007-05-25 00:59:01 +00:00
Chris Lattner 80c94a4a04 Fix PR1446 by not scalarrepl'ing giant structures. 
llvm-svn: 37326
 2007-05-24 18:43:04 +00:00
Dale Johannesen 1409b6a59b Blocks that cond-br and uncond-br/fallthrough to same block should have 
only one successor.

llvm-svn: 37324
 2007-05-24 18:31:55 +00:00
Dale Johannesen 1af8c870c7 Fix for PR1444: do not create two successors to the same block. 
Temporarily, this breaks CodeGen/Generic/2006-02-12-InsertLibraryCall.ll
by exposing an unrelated latent problem; working on that.

llvm-svn: 37323
 2007-05-24 17:39:32 +00:00
Zhou Sheng 8ff9ff7975 Compute the correct word number. 
llvm-svn: 37322
 2007-05-24 15:03:18 +00:00
Dan Gohman 30978078bf Minor comment cleanups. 
llvm-svn: 37321
 2007-05-24 14:36:04 +00:00
Dan Gohman 703e0f8608 Add explicit qualification for namespace MVT members. 
llvm-svn: 37320
 2007-05-24 14:33:05 +00:00
Dan Gohman 5d4bb4f230 Add cases for v2f32. 
llvm-svn: 37319
 2007-05-24 14:29:12 +00:00
Evan Cheng a4d187b8ce Fix a typo that caused combiner to create mal-formed pre-indexed store where value store is the same as the base pointer. 
llvm-svn: 37318
 2007-05-24 02:35:39 +00:00
Dale Johannesen f4a77d2481 Two tail merging improvements: 
When considering blocks with more than 2 predecessors, merge the block with
the largest number of matching insns, rather than the first block found.
Considering that 1 matching insn is enough to show a win for candidates that
already end with a branch.

llvm-svn: 37315
 2007-05-23 21:07:20 +00:00
Devang Patel d50859e87b Add dump() routines for debugging assistance. 
llvm-svn: 37314
 2007-05-23 19:55:36 +00:00
Anton Korobeynikov 3b327826db Mark all calls as "could throw", when exceptions are enabled. Emit necessary LP info too. This fixes PR1439 
llvm-svn: 37311
 2007-05-23 11:08:31 +00:00
Chris Lattner 6509c0673f prevent exponential recursion in isNegatibleForFree 
llvm-svn: 37310
 2007-05-23 07:35:22 +00:00
Evan Cheng d0e669199b Preliminary iterative if-conversion support. 
llvm-svn: 37309
 2007-05-23 07:23:16 +00:00
Evan Cheng 1d764eca98 Hooks for predication support. 
llvm-svn: 37308
 2007-05-23 07:22:05 +00:00
Evan Cheng c972de8c8b Rename a parameter. 
llvm-svn: 37307
 2007-05-23 07:21:11 +00:00
Chris Lattner 688b2807df when merging two alias sets together, be sure to propagate the volatility of 
the inner set.  This fixes PR1435 and Transforms/LICM/2007-05-22-VolatileSink.ll

llvm-svn: 37305
 2007-05-23 06:36:35 +00:00
Devang Patel 4d01a7b1b5 If user wants to run instcombine twice, do not block it. 
llvm-svn: 37301
 2007-05-23 05:08:52 +00:00
Chris Lattner f79577d314 fix a miscompilation when passing a float through varargs 
llvm-svn: 37297
 2007-05-23 01:17:04 +00:00
Reid Spencer bdf03b4174 Reinstate the patch for escaping non-printing characters and allow for 
\\ to escape \. All these cases are now handled by the AsmParser.

llvm-svn: 37295
 2007-05-22 19:27:35 +00:00
Reid Spencer c5cec2a4e8 Regenerate. 
llvm-svn: 37294
 2007-05-22 19:08:16 +00:00
Reid Spencer 0f656c39e1 Don't allow the UnEscape code to read or write beyond the end of yytext. 
Make sure we convert \\ into \.

llvm-svn: 37293
 2007-05-22 19:07:45 +00:00
Reid Spencer acfe667eab Regenerate. 
llvm-svn: 37292
 2007-05-22 18:52:55 +00:00
Reid Spencer 3b208cca84 Implement full unescaping of escaped hex characters in all quoted identifiers 
and strings.

llvm-svn: 37291
 2007-05-22 18:52:21 +00:00
Dale Johannesen f9cbdc676c name change requested by review of previous patch 
llvm-svn: 37289
 2007-05-22 18:31:04 +00:00
Owen Anderson 0ae7eb5e7c Silence a warning. 
llvm-svn: 37288
 2007-05-22 18:13:40 +00:00
Dale Johannesen 82810c8a13 Make tail merging the default, except on powerPC. There was no prior art 
for a target-dependent default with a command-line override; this way
should be generally usable.

llvm-svn: 37285
 2007-05-22 17:14:46 +00:00
Chris Lattner 83d7dd419a temporarily revert reid's asmwriter patch, it is missing the asmparser piece 
that decodes the escape sequences, thus breaking all cases that use them.

This fixes test/Assembler/2007-05-21-Escape.ll

llvm-svn: 37284
 2007-05-22 07:00:50 +00:00
Chris Lattner 77119f43af update comment 
llvm-svn: 37282
 2007-05-22 06:56:32 +00:00
Chris Lattner 31ab0ed37f regenerate 
llvm-svn: 37281
 2007-05-22 06:47:55 +00:00
Chris Lattner 9111cd6b8a simplify code 
llvm-svn: 37280
 2007-05-22 06:47:11 +00:00
Bill Wendling 3fb7fdfded We only need to specify the most-implied feature for an architecture. 
llvm-svn: 37275
 2007-05-22 05:15:37 +00:00
Evan Cheng 8c8afb27d7 Fix some -march=thumb regressions. tBR_JTr is not predicable. 
llvm-svn: 37272
 2007-05-21 23:17:32 +00:00
Dale Johannesen d1de276c16 Use AXI3 not AXI2 for appropriate PIC PC-relative loads and stores. Cosmetic. 
llvm-svn: 37271
 2007-05-21 22:42:04 +00:00
Evan Cheng e26c0916a3 If-convert early exit blocks (returns, etc.); bug fixes, etc. 
llvm-svn: 37270
 2007-05-21 22:22:58 +00:00
Dale Johannesen 7d55f3733e Add some patterns for PIC PC-relative loads and stores. 
llvm-svn: 37269
 2007-05-21 22:14:33 +00:00
Evan Cheng 147b334b6a BlockHasNoFallThrough() now returns true if block ends with a return instruction; AnalyzeBranch() should ignore predicated instructionsd. 
llvm-svn: 37268
 2007-05-21 18:56:31 +00:00
Duncan Sands 34e82a4508 Only emit one entry in the exception action table for each action, even if 
it occurs for multiple landing pads.

llvm-svn: 37267
 2007-05-21 18:50:28 +00:00
Evan Cheng fc94eb66d2 BlockHasNoFallThrough() now returns true if block ends with a return instruction. 
llvm-svn: 37266
 2007-05-21 18:44:17 +00:00
Reid Spencer e44b45e757 Get the order of the hext digits right! 
llvm-svn: 37261
 2007-05-19 14:44:42 +00:00
Reid Spencer 6473fb7916 Adjust how LLVM names are produced: 
1. Always use % for local and @ for global.
2. Replace NameNeedsQuotes with QuoteNameIfNeeded so that any adjustments
   to the name can be done in one pass.
3. Implement generation of hex escapes so we don't get "wonky" characters
   in the output.

llvm-svn: 37260
 2007-05-19 07:25:21 +00:00
Reid Spencer 21526d6b56 Regenerate 
llvm-svn: 37258
 2007-05-19 07:22:10 +00:00
Reid Spencer aba0cc7173 Make the %"..." syntax legal for local name. This just makes it symmetric 
with global names which can already be @"..."

llvm-svn: 37257
 2007-05-19 07:21:26 +00:00
Chris Lattner a655a157a0 Fix Transforms/InstCombine/2007-05-18-CastFoldBug.ll, a bug that devastates 
objc code due to the way the FE lowers objc message sends.

llvm-svn: 37256
 2007-05-19 06:51:32 +00:00
Reid Spencer 80fcb754d9 On Linux platforms and at optimization levels -O1 and above, llvm-gcc can 
turn "putchar" calls into _IO_putc calls which is a lower-level interface.
This patch allows these calls to be executed by lli in interpreter mode.

llvm-svn: 37254
 2007-05-19 01:36:17 +00:00
Chris Lattner e8bd53c36a Handle negative strides much more optimally. This compiles X86/lsr-negative-stride.ll 
into:

_t:
        movl 8(%esp), %ecx
        movl 4(%esp), %eax
        cmpl %ecx, %eax
        je LBB1_3       #bb17
LBB1_1: #bb
        cmpl %ecx, %eax
        jg LBB1_4       #cond_true
LBB1_2: #cond_false
        subl %eax, %ecx
        cmpl %ecx, %eax
        jne LBB1_1      #bb
LBB1_3: #bb17
        ret
LBB1_4: #cond_true
        subl %ecx, %eax
        cmpl %ecx, %eax
        jne LBB1_1      #bb
        jmp LBB1_3      #bb17

instead of:

_t:
        subl $4, %esp
        movl %esi, (%esp)
        movl 12(%esp), %ecx
        movl 8(%esp), %eax
        cmpl %ecx, %eax
        je LBB1_4       #bb17
LBB1_1: #bb.outer
        movl %ecx, %edx
        negl %edx
LBB1_2: #bb
        cmpl %ecx, %eax
        jle LBB1_5      #cond_false
LBB1_3: #cond_true
        addl %edx, %eax
        cmpl %ecx, %eax
        jne LBB1_2      #bb
LBB1_4: #bb17
        movl (%esp), %esi
        addl $4, %esp
        ret
LBB1_5: #cond_false
        movl %ecx, %edx
        subl %eax, %edx
        movl %eax, %esi
        addl %esi, %esi
        cmpl %ecx, %esi
        je LBB1_4       #bb17
LBB1_6: #cond_false.bb.outer_crit_edge
        movl %edx, %ecx
        jmp LBB1_1      #bb.outer

llvm-svn: 37252
 2007-05-19 01:22:21 +00:00
Chris Lattner 1fa8276e70 same patch as the previous one, but the symmetric case 
llvm-svn: 37249
 2007-05-19 00:46:51 +00:00
Chris Lattner b08cbbd737 Disable the (A == (B-A)) -> 2*A == B xform when the sub has multiple uses (in 
this case, the xform introduces an extra operation).  This compiles
PowerPC/compare-duplicate.ll into:

_test:
        subf r2, r3, r4
        cmplw cr0, r2, r3
        bne cr0, LBB1_2 ;F

instead of:

_test:
        slwi r2, r3, 1
        subf r3, r3, r4
        cmplw cr0, r4, r2
        bne cr0, LBB1_2 ;F

This is target independent of course.

llvm-svn: 37246
 2007-05-19 00:43:44 +00:00
Reid Spencer b6af1aae35 Fix an assertion introduced by my last change to the toString method. We 
can't use getZExtValue() to extract the low order bits for each digit.
Instead, we need to access the low order word directly.

llvm-svn: 37242
 2007-05-19 00:29:55 +00:00
Dan Gohman c12dd5207d Apply this patch: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070514/049845.html

llvm-svn: 37240
 2007-05-18 23:21:46 +00:00
Chris Lattner 7ea2df6e2a add a note 
llvm-svn: 37239
 2007-05-18 20:18:14 +00:00
Evan Cheng 018cffbca4 Clean up. 
llvm-svn: 37237
 2007-05-18 19:32:08 +00:00
Evan Cheng faaf716540 Change to depth-first traversal. 
llvm-svn: 37236
 2007-05-18 19:26:33 +00:00
Dale Johannesen dafda82755 Document an inefficiency in tail merging. 
llvm-svn: 37235
 2007-05-18 18:46:40 +00:00
Dan Gohman eefa83e67b Use MVT::FIRST_VECTOR_VALUETYPE and MVT::LAST_VECTOR_VALUETYPE. 
llvm-svn: 37234
 2007-05-18 18:44:07 +00:00
Dan Gohman b539df3389 Qualify calls to getTypeForValueType with MVT:: too. 
llvm-svn: 37233
 2007-05-18 18:41:29 +00:00
Evan Cheng 2e82cefd24 Some restructuring in preparation for most aggressive if-conversion. 
llvm-svn: 37231
 2007-05-18 18:14:37 +00:00
Dan Gohman 1796f1f8e9 Qualify several calls to functions in the MVT namespace, for consistency. 
llvm-svn: 37230
 2007-05-18 17:52:13 +00:00
Evan Cheng f25d3a5d73 Watch out for blocks that end with a return. 
llvm-svn: 37227
 2007-05-18 17:06:53 +00:00
Chris Lattner 9eeada9470 Fix PR1434 and test/Linker/link-archive.ll, this is a regression from 1.9. 
llvm-svn: 37204
 2007-05-18 04:02:46 +00:00
Evan Cheng 478b805956 If true / false blocks fallthrough before ifcvt, add unconditional branches to ifcvt'd block. 
llvm-svn: 37200
 2007-05-18 01:55:58 +00:00
Evan Cheng 4ae1840d21 Mark calls non-predicable for now. Need to ensure it's the last instruction in the if-converted block or make sure it preserve condition code. 
llvm-svn: 37199
 2007-05-18 01:53:54 +00:00
Dale Johannesen f8956178af Remove some unneeded branches. (spotted by Evan, thanks) 
llvm-svn: 37198
 2007-05-18 01:28:58 +00:00
Evan Cheng ea623560f8 Silence some compilation warnings. 
llvm-svn: 37197
 2007-05-18 01:19:57 +00:00
Evan Cheng 0f745da4fe Make use of target specific block size limits; bug fixes. 
llvm-svn: 37195
 2007-05-18 00:20:58 +00:00
Evan Cheng 6addd65914 Set ARM if-conversion block size threshold to 10 instructions for now. 
llvm-svn: 37194
 2007-05-18 00:19:34 +00:00
Evan Cheng e20dd92792 RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted. 
llvm-svn: 37193
 2007-05-18 00:18:17 +00:00
Evan Cheng 99be49dd9b RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted. 
llvm-svn: 37192
 2007-05-18 00:05:48 +00:00
Evan Cheng a92b2b38ff Move isSuccessor() offline, change it to use std::find. 
llvm-svn: 37190
 2007-05-17 23:58:53 +00:00
Devang Patel 2c30a37a5c Fix PR1431 
Test case at Transformations/SCCP/2007-05-16-InvokeCrash.ll

llvm-svn: 37185
 2007-05-17 22:10:15 +00:00
Dale Johannesen 58698d2534 More effective breakdown of memcpy into repeated load/store. These are now 
in the order lod;lod;lod;sto;sto;sto which means the load-store optimizer
has a better chance of producing ldm/stm.  Ideally you would get cooperation
from the RA as well but this is not there yet.

llvm-svn: 37179
 2007-05-17 21:31:21 +00:00
Reid Spencer 5c138133b7 Get rid of leading zeros in the output of toString. 
llvm-svn: 37175
 2007-05-17 19:23:02 +00:00
Evan Cheng afa1cb6da3 Fix a bogus check that prevented folding VECTOR_SHUFFLE to UNDEF; add an optimization to fold VECTOR_SHUFFLE to a zero vector. 
llvm-svn: 37173
 2007-05-17 18:45:50 +00:00
Evan Cheng 632c3f01ed Added missing patterns for UNPCKH* and PUNPCKH*. 
llvm-svn: 37172
 2007-05-17 18:44:37 +00:00
Chris Lattner 0184f88deb disable MaskedValueIsZero, ComputeMaskedBits, and SimplifyDemandedBits for 
i128 integers.  The 64-bit masks are not wide enough to represent the results.
These should be converted to APInt someday.

llvm-svn: 37169
 2007-05-17 18:19:23 +00:00
Chris Lattner 2135bc08d6 add expand support for ADDC/SUBC/ADDE/SUBE so we can codegen 128-bit add/sub on 32-bit (or less) targets 
llvm-svn: 37168
 2007-05-17 18:15:41 +00:00
Chris Lattner dade607f19 This is the correct fix for PR1427. This fixes mmx-shuffle.ll and doesn't 
cause other regressions.

llvm-svn: 37160
 2007-05-17 17:13:13 +00:00
Anton Korobeynikov 1ad4618715 Revert patch for PR1427. It breaks almost all vector tests. 
llvm-svn: 37159
 2007-05-17 07:50:14 +00:00
Chris Lattner 3e549e9d5f add support for 128-bit add/sub on ppc64 
llvm-svn: 37158
 2007-05-17 06:52:46 +00:00
Reid Spencer 07ae5465cd Print integer values as both decimal and hexadecimal for convenience 
of verifying result values when debugging.

llvm-svn: 37156
 2007-05-17 06:47:54 +00:00
Chris Lattner 13f4bf5c5e add support for 128-bit integer add/sub 
llvm-svn: 37154
 2007-05-17 06:35:11 +00:00
Reid Spencer fffdf10566 For lshr by 0 bits, just return *this as a short cut. This also prevents 
undefined behavior when the width > 64 bits.

llvm-svn: 37153
 2007-05-17 06:26:29 +00:00
Chris Lattner 6a5a46322f Fix PR1427 and test/CodeGen/X86/mmx-shuffle.ll 
llvm-svn: 37141
 2007-05-17 03:29:42 +00:00
Evan Cheng 2db22024cf Remove. Not needed. 
llvm-svn: 37139
 2007-05-17 00:11:35 +00:00
Evan Cheng 733b4bd8ae Default implementation of TargetInstrInfo::getBlockSize(). 
llvm-svn: 37138
 2007-05-16 23:53:44 +00:00
Evan Cheng 429178d727 Add target hook to specify block size limit for if-conversion. 
llvm-svn: 37134
 2007-05-16 23:45:53 +00:00
Dale Johannesen 7a6c175e7a Don't fold bitconvert(load) for preinc/postdec loads. Likewise stores. 
llvm-svn: 37130
 2007-05-16 22:45:30 +00:00
Evan Cheng af71610429 isBlockPredicable() always ignore terminal instructions; add comments. 
llvm-svn: 37126
 2007-05-16 21:54:37 +00:00
Evan Cheng 1634e7186b ARM::tB is also predicable. 
llvm-svn: 37125
 2007-05-16 21:53:43 +00:00
Evan Cheng dcff2eb0e8 PredicateInstruction returns true if the operation was successful. 
llvm-svn: 37124
 2007-05-16 21:53:07 +00:00
Evan Cheng 973c3739b0 Add default implementation of PredicateInstruction(). 
llvm-svn: 37123
 2007-05-16 21:20:37 +00:00
Evan Cheng 5ea933a009 Rename M_PREDICATED to M_PREDICABLE; Moved isPredicable() to MachineInstr. 
llvm-svn: 37121
 2007-05-16 20:56:08 +00:00
Evan Cheng 4423687831 Move if-conversion after all passes that may use register scavenger. 
llvm-svn: 37120
 2007-05-16 20:52:46 +00:00
Evan Cheng e2762c3d68 Removed isPredicable(). 
llvm-svn: 37119
 2007-05-16 20:50:23 +00:00
Evan Cheng dcd6cdf896 Make ARM::B isPredicable; Make Bcc and MOVCC condition option a normal operand so they are not predicable. 
llvm-svn: 37118
 2007-05-16 20:50:01 +00:00
Evan Cheng cc33218607 Added isPredicable bit to class Instruction. 
llvm-svn: 37117
 2007-05-16 20:47:01 +00:00
Reid Spencer a93c981f66 Fix a bug in the "fromString" method where radix 2,8 and 16 values were 
not being generated correctly because the shl operator does not mutate its
object but returns a new value. Also, make the distinction between radix
16 and the others more clear.

llvm-svn: 37111
 2007-05-16 19:18:22 +00:00
Reid Spencer 1925c537f2 Avoid a "loss of precision" error in gcc 4.1.3. 
llvm-svn: 37105
 2007-05-16 16:39:29 +00:00
Duncan Sands 59ae77486c Output exception call-sites in address order, as required by the unwinding 
runtime.

llvm-svn: 37104
 2007-05-16 12:12:23 +00:00
Evan Cheng 01a4227ed1 Conditional branch is not a barrier. 
llvm-svn: 37103
 2007-05-16 07:45:54 +00:00
Chris Lattner 48fb92f75d Use a ptr set instead of a linear search to unique TokenFactor operands. 
This fixes PR1423

llvm-svn: 37102
 2007-05-16 06:37:59 +00:00
Chris Lattner 888653cdba implement the missing maskmovq mmx intrinsic that akor hit. 
llvm-svn: 37100
 2007-05-16 06:08:17 +00:00
Evan Cheng c95f95b6da Fix comment. 
llvm-svn: 37098
 2007-05-16 05:14:06 +00:00
Evan Cheng 35fc2119b0 Devang points out that we need an assertion here. 
llvm-svn: 37097
 2007-05-16 05:11:10 +00:00
Reid Spencer 65ba7501fc Implement printing of instruction result values when debug info is turned 
on. This helps to speed up the debugging time by showing computational
results as the program executes.

llvm-svn: 37095
 2007-05-16 02:05:13 +00:00
Evan Cheng 288f133c71 Bug fix: should check ABI alignment, not pref. alignment. 
llvm-svn: 37094
 2007-05-16 02:04:50 +00:00
Evan Cheng ad3aac71ce Hooks for predication support. 
llvm-svn: 37093
 2007-05-16 02:01:49 +00:00
Evan Cheng f5e53a58db Initial commit of (very basic) if converter. 
llvm-svn: 37092
 2007-05-16 02:00:57 +00:00
Dale Johannesen 420a85d0cf Remove extra CFG edges before doing these passes; it makes them happier. 
llvm-svn: 37089
 2007-05-15 21:19:17 +00:00
Lauro Ramos Venancio 3f142cbca2 Fix an infinite recursion in GetNegatedExpression. 
llvm-svn: 37086
 2007-05-15 17:05:43 +00:00
Duncan Sands 750e8c5d4d The index into the actions table is a ULEB128 not a SLEB128. 
llvm-svn: 37084
 2007-05-15 13:54:14 +00:00
Chris Lattner 66ad6fac2f selects can also reach here 
llvm-svn: 37081
 2007-05-15 06:42:04 +00:00
Chris Lattner a6f88ced8b implement the ModuleProvider::dematerializeFunction hook 
llvm-svn: 37080
 2007-05-15 06:29:44 +00:00
Reid Spencer daed139420 Un-brain-dead-ify the lowering of part set for the reverse case. 
llvm-svn: 37071
 2007-05-15 02:26:52 +00:00
Chris Lattner c7596efdad Fix some subtle issues handling immediate values. This fixes 
test/CodeGen/ARM/2007-05-14-InlineAsmCstCrash.ll

llvm-svn: 37069
 2007-05-15 01:33:58 +00:00
Chris Lattner 0b7472da6f fix some subtle inline asm selection issues 
llvm-svn: 37067
 2007-05-15 01:31:05 +00:00
Evan Cheng 0f7cbe8370 Add PredicateOperand to all ARM instructions that have the condition field. 
llvm-svn: 37066
 2007-05-15 01:29:07 +00:00
Chris Lattner c8798d085c fix subtle bugs in inline asm operand selection 
llvm-svn: 37065
 2007-05-15 01:28:08 +00:00
Evan Cheng 4d728b0419 Added getNumExplicitOperands and findFirstPredOperand. 
llvm-svn: 37064
 2007-05-15 01:26:09 +00:00
Chris Lattner 234f96daa8 Fix Transforms/InstCombine/2007-05-14-Crash.ll 
llvm-svn: 37057
 2007-05-15 00:16:00 +00:00
Lauro Ramos Venancio 1b8d46ab21 Fix previous patch. GOTOFF can be used only when the symbol has internal 
linkage or hidden visibility.

llvm-svn: 37055
 2007-05-14 23:20:21 +00:00
Chris Lattner e49c974a7c implement a simple fneg optimization/propagation thing. This compiles: 
CodeGen/PowerPC/fneg.ll into:

_t4:
        fmul f0, f3, f4
        fmadd f1, f1, f2, f0
        blr

instead of:

_t4:
        fneg f0, f3
        fmul f0, f0, f4
        fmsub f1, f1, f2, f0
        blr

llvm-svn: 37054
 2007-05-14 22:04:50 +00:00
Evan Cheng e1595b6859 Only worry about intervening kill if there are more than one live ranges in the interval. 
llvm-svn: 37052
 2007-05-14 21:23:51 +00:00
Evan Cheng c690cba7d9 Fix for PR1406: 
v1 =
r2 = move v1
   = op r2<kill>
...
r2 = move v1
   = op r2<kill>

Clear the first r2 kill if v1 and r2 are joined.

llvm-svn: 37050
 2007-05-14 21:10:05 +00:00
Evan Cheng fc2377d4ed When marking a register as being implicitly defined, make sure to clear its partial use info as well. 
llvm-svn: 37046
 2007-05-14 20:39:18 +00:00
Lauro Ramos Venancio d705f5d51d Optimize PIC implementation. GOTOFF can be used when the symbol is defined 
and used in the same module.

llvm-svn: 37044
 2007-05-14 18:46:23 +00:00
Lauro Ramos Venancio 3551928a2b Enable aliases on arm-linux. 
llvm-svn: 37042
 2007-05-14 18:32:56 +00:00
Reid Spencer 764ae2a21b Give names to the final result values of the part_set computations. This 
just aids in readability and debugability of the output. No functional change.

llvm-svn: 37037
 2007-05-14 17:21:17 +00:00
Dan Gohman 8d40e4d965 Correct a few comments. 
llvm-svn: 37034
 2007-05-14 14:31:17 +00:00
Dan Gohman 90d97ac1e6 Add passes -view-cfg and -view-cfg-only that are like -print-cfg and 
-print-cfg-only except they use the ViewCFG function, which displays the
CFG rendered with graphviz with gv.

llvm-svn: 37033
 2007-05-14 14:25:08 +00:00
Reid Spencer 98ed7db7ab Make the results for the rotate functions correct when rotateAmt == 0. 
llvm-svn: 37026
 2007-05-14 00:15:28 +00:00
Reid Spencer 4c50b52f63 Add some things needed by the llvm-gcc version supporting bit accurate integer 
types:
1. Functions to compute div/rem at the same time.
2. Further assurance that an APInt with 0 bitwidth cannot be constructed.
3. Left and right rotate operations.
4. An exactLogBase2 function which requires an exact power of two or it
   returns -1.

llvm-svn: 37025
 2007-05-13 23:44:59 +00:00
Chris Lattner 1904e45d0c Fix PR1413 
llvm-svn: 37023
 2007-05-13 22:19:27 +00:00
Chris Lattner cea37beb52 Fix Transforms/GlobalOpt/2007-05-13-Crash.ll 
llvm-svn: 37020
 2007-05-13 21:28:07 +00:00
Anton Korobeynikov 1ee0c8d563 Emit function debug frames in one atom. This will prevent us from generating incorrect assembler in case of both 
debug information & exception information presented.

llvm-svn: 37019
 2007-05-13 17:30:11 +00:00
Anton Korobeynikov bbaf55448b Emit multiple common EH frames for multiple (including blank) personality 
functions. This partly fixes PR1414: now we're restricted only to one
personality function per eh frame, not per module. Further work on
"multiple personalities" topic needs representative example.

llvm-svn: 37018
 2007-05-13 15:42:26 +00:00
Anton Korobeynikov 13da17843c More DWARF-related things cleanup: 
1. Fix PR1380
2. Apply Duncan's patch from PR1410
3. Insert workaround for "one personality function per module" as noted in PR1414
4. Emit correct debug frames for x86/linux. This partly fixes DebugInfo/2006-11-06-StackTrace.cpp: stack trace is
shown correctly, but arguments for function on top of stack are displayed incorrectly.

llvm-svn: 37015
 2007-05-12 22:36:25 +00:00
Reid Spencer 81ee020f64 Fix shl to produce the correct result when the bitwidth is > 64 and the 
shift amount is 0. Previously this code would do a lshr by the bit width
which can lead to incorrect results.

llvm-svn: 37010
 2007-05-12 18:01:57 +00:00
Reid Spencer bf283708f7 Get the size of auto arrays right, regardless of its changing size. 
llvm-svn: 37006
 2007-05-12 11:07:40 +00:00
Chris Lattner a26153143e allow partially materialized modules to be written out, which just strips out 
the functions which haven't been read.

llvm-svn: 36999
 2007-05-11 23:51:59 +00:00
Devang Patel 79a71ec3ad Fix http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049516.html 
llvm-svn: 36998
 2007-05-11 23:14:43 +00:00
Chris Lattner 1480e16596 significantly improve debug output of lsr 
llvm-svn: 36996
 2007-05-11 22:40:34 +00:00
Dan Gohman fead7979f7 Update comments to say "vector" instead of "packed". 
llvm-svn: 36995
 2007-05-11 21:43:24 +00:00
Dan Gohman b5650ebd6a Fix typos. 
llvm-svn: 36994
 2007-05-11 21:10:54 +00:00
Dan Gohman 2980d9da45 This patch extends the LoopUnroll pass to be able to unroll loops 
with unknown trip counts. This is left off by default, and a
command-line option enables it. It also begins to separate loop
unrolling into a utility routine; eventually it might be made usable
from other passes.

It currently works by inserting conditional branches between each
unrolled iteration, unless it proves that the trip count is a
multiple of a constant integer > 1, which it currently only does in
the rare case that the trip count expression is a Mul operator with
a ConstantInt operand. Eventually this information might be provided
by other sources, for example by a pass that peels/splits the loop
for this purpose.

llvm-svn: 36990
 2007-05-11 20:53:41 +00:00
Chris Lattner 600db3eb96 fix regressions from my previous checking, including 
Transforms/InstCombine/2006-12-08-ICmp-Combining.ll

llvm-svn: 36989
 2007-05-11 16:58:45 +00:00
Anton Korobeynikov 67286b1266 Perform correct actions numbers/sizes computation 
llvm-svn: 36988
 2007-05-11 08:47:35 +00:00
Anton Korobeynikov 00d02442b0 Fix action No calculation in multiple-invoke-one-LP mode 
llvm-svn: 36987
 2007-05-11 08:23:57 +00:00
Chris Lattner fe2b44de9f fix Transforms/InstCombine/2007-05-10-icmp-or.ll 
llvm-svn: 36984
 2007-05-11 05:55:56 +00:00
Chris Lattner 436370bac8 fix a memory leak 
llvm-svn: 36981
 2007-05-11 00:43:26 +00:00
Chris Lattner fd96905f12 Fix a bug where the bcreader could crash on .bc files that were an exact 
multiple of the page size, due to a bug in MappedFile

llvm-svn: 36980
 2007-05-11 00:00:27 +00:00
Dale Johannesen cc8f571bc8 Do not generate branches to entry block. This fixes several test suite 
failures on PPC (can happen only when prologue code is null)

llvm-svn: 36979
 2007-05-10 23:59:23 +00:00
Anton Korobeynikov ee02c7d2fb Ooops. Some debugging stuff :) 
llvm-svn: 36978
 2007-05-10 22:38:46 +00:00
Anton Korobeynikov 96142de3f0 Allow multiple invokes per landing pad. This (probably) fixes PR1410. 
llvm-svn: 36977
 2007-05-10 22:34:59 +00:00
Duncan Sands b43fe52136 Later computations assume we are aligned at this point. 
llvm-svn: 36975
 2007-05-10 18:40:24 +00:00
Anton Korobeynikov ed5dad4306 TypeIds are indexed by j, not i 
llvm-svn: 36974
 2007-05-10 15:10:34 +00:00
Dale Johannesen 6e16d09252 Make tail merging handle many more cases (all it can, I think). 
llvm-svn: 36966
 2007-05-10 01:01:49 +00:00
Chris Lattner 623c738fe9 add some notes 
llvm-svn: 36965
 2007-05-10 00:08:04 +00:00
Evan Cheng f325c2a65e Can't fold the bit_convert is the store is a truncating store. 
llvm-svn: 36962
 2007-05-09 21:49:47 +00:00
Anton Korobeynikov 192d09c2d9 Do not assert, when case range split metric is zero and JTs are not allowed: just emit binary tree in this case. This 
fixes PR1403.

llvm-svn: 36959
 2007-05-09 20:07:08 +00:00
Devang Patel 9557247412 Fix PR1333 
Testcases :
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049451.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049452.html

llvm-svn: 36955
 2007-05-09 08:24:12 +00:00
Evan Cheng 9c031c0ddf Switch BCC, MOVCCr, etc. to PredicateOperand. 
llvm-svn: 36948
 2007-05-08 21:08:43 +00:00
Evan Cheng d194a8603d PredicateOperand can be used as a normal operand for isel. 
llvm-svn: 36947
 2007-05-08 21:06:08 +00:00