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19658 Commits

Author SHA1 Message Date
Owen Anderson
ed3e63a203 Fix a bug introduced in my last commit. 
llvm-svn: 40542
 2007-07-26 18:57:04 +00:00
Owen Anderson
f2b10d3de3 Fix a couple more bugs in the phi construction by pulling in code that does 
almost the same things from LCSSA.

llvm-svn: 40540
 2007-07-26 18:26:51 +00:00
Evan Cheng
ffa8cbd22b Make sure epilogue esp adjustment is placed before any terminator and pop instructions. 
llvm-svn: 40538
 2007-07-26 17:45:41 +00:00
Evan Cheng
ea037bffd2 Don't pollute the meaning of isUnpredicatedTerminator. 
llvm-svn: 40537
 2007-07-26 17:32:14 +00:00
Evan Cheng
9802b13b38 Minor bug. 
llvm-svn: 40535
 2007-07-26 17:02:45 +00:00
Dan Gohman
249090568d Fix the alias analysis query in DAGCombiner to not add in two 
offsets. The SrcValueOffset values are the real offsets from the
SrcValue base pointers.

llvm-svn: 40534
 2007-07-26 16:14:06 +00:00
Dan Gohman
298f3fd9b7 Move the GET_SIDE_EFFECT_INFO logic from isInstructionTriviallyDead 
to Instruction::mayWriteToMemory, fixing a FIXME, and helping
various places that call mayWriteToMemory directly.

llvm-svn: 40533
 2007-07-26 16:06:08 +00:00
Dan Gohman
fd392a7a51 Remove a bogus return statement, what appears to have been a pasto 
from Relation::contradicts in Relation::incorporate.

llvm-svn: 40531
 2007-07-26 15:29:35 +00:00
Dan Gohman
c63ddf2f57 DummyInst's member functions don't need to be virtual. 
llvm-svn: 40530
 2007-07-26 15:25:08 +00:00
Dan Gohman
d3a062f01b In the .loc directive, print the fields as "debug" fields, so they 
don't get decorated as if for immediate fields for instructions.

llvm-svn: 40529
 2007-07-26 15:24:15 +00:00
Dan Gohman
1bfc3f0d09 Fix a whitespace difference between CMPSSrr and CMPSDrr. 
llvm-svn: 40528
 2007-07-26 15:11:50 +00:00
Christopher Lamb
258dab5389 Add a MachineFunction pass, which runs post register allocation, that turns subreg insert/extract instruction into register copies. This ensures correct code gen if the coalescer isn't able to remove all subreg instructions. 
llvm-svn: 40521
 2007-07-26 08:18:32 +00:00
Christopher Lamb
08bcd5c0f8 Teach DAG scheduling how to properly emit subreg insert/extract machine instructions. PR1350 
llvm-svn: 40520
 2007-07-26 08:12:07 +00:00
Christopher Lamb
9a0d88efde Add target independent MachineInstr's to represent subreg insert/extract in MBB's. PR1350 
llvm-svn: 40518
 2007-07-26 07:48:21 +00:00
Evan Cheng
413d222576 Same goes for constantpool, etc. 
llvm-svn: 40517
 2007-07-26 07:35:15 +00:00
Christopher Lamb
73c3cd47cc Add selection DAG nodes for subreg insert/extract. PR1350 
llvm-svn: 40516
 2007-07-26 07:34:40 +00:00
Christopher Lamb
cb63a77a51 Remove subreg index from MachineInstr's and also keep vregs as unsigned when adding operands. 
llvm-svn: 40514
 2007-07-26 07:00:46 +00:00
Christopher Lamb
b178ecbbc0 Fix infinite recursion for when extract_vector_elt is legal. Unfortunately no public targets use this code-path, so no test. 
llvm-svn: 40510
 2007-07-26 03:33:13 +00:00
Christopher Lamb
f3881994a7 Add support for 3 element 32-bit vector ValueTypes. 
llvm-svn: 40506
 2007-07-26 01:46:52 +00:00
Dan Gohman
513dcba4f8 Remove X86ISD::LOAD_PACK and X86ISD::LOAD_UA and associated code from the 
x86 target, replacing them with the new alignment attributes on memory
references.

llvm-svn: 40504
 2007-07-26 00:31:09 +00:00
Owen Anderson
ed75133924 Fix what is _hopefully_ the last corner case for loops. 
llvm-svn: 40503
 2007-07-25 23:54:42 +00:00
Evan Cheng
9588231d34 Mac OS X x86-64 lower 4G address is not available. 
llvm-svn: 40502
 2007-07-25 23:41:36 +00:00
Evan Cheng
75b396c3c9 Mac OS X should use 0x90 to fill in gaps to satisfy function alignment requirements. 
llvm-svn: 40501
 2007-07-25 23:36:05 +00:00
Evan Cheng
4b747bb6a0 EmitAlignment() also emits optional fill value. 
llvm-svn: 40500
 2007-07-25 23:35:07 +00:00
Evan Cheng
f34a0509c2 Functions with LinkOnce and weak linkage still need to be aligned. Doh. 
llvm-svn: 40499
 2007-07-25 22:28:16 +00:00
Owen Anderson
1e53615073 My last commit was not correct for nested loops. Fix it, and add a testcase for it. 
llvm-svn: 40498
 2007-07-25 22:19:40 +00:00
Owen Anderson
ce9d73dbe7 Fix an infinite loop on 300.twolf. 
llvm-svn: 40497
 2007-07-25 22:03:06 +00:00
Owen Anderson
b215074820 Fix a bug in non-local memdep that was causing an infinite loop on 175.vpr. 
llvm-svn: 40495
 2007-07-25 21:26:36 +00:00
Owen Anderson
522f7a7608 Fix a bug that was causing GVN to crash on 252.eon. 
llvm-svn: 40494
 2007-07-25 21:13:41 +00:00
Owen Anderson
6a1a8d05b8 Add basic support for performing whole-function RLE. 
Note: This has not yet been thoroughly tested.  Use at your own risk.

llvm-svn: 40489
 2007-07-25 19:57:03 +00:00
Dan Gohman
0fc4e0cf47 Don't ignore the return value of AsmPrinter::doInitialization and 
AsmPrinter::doFinalization.

llvm-svn: 40487
 2007-07-25 19:33:14 +00:00
Devang Patel
d7b401bafd Add BasicInliner interface. 
This interface allows clients to inline bunch of functions with module
level call graph information.:wq

llvm-svn: 40486
 2007-07-25 18:00:25 +00:00
Nick Lewycky
608fe6cf68 Fix debug info and globals filled with zeros. 
llvm-svn: 40483
 2007-07-25 03:48:45 +00:00
Anton Korobeynikov
e0344393bb Minor cleanup: 
- Split EH and debug infiormation
 - Make DwarfWriter more verbose in some cases

llvm-svn: 40481
 2007-07-25 00:06:28 +00:00
Dan Gohman
1444c5840b Add const to CanBeFoldedBy, CheckAndMask, and CheckOrMask. 
llvm-svn: 40480
 2007-07-24 23:00:27 +00:00
Dan Gohman
a2e07a38bc Use movaps to load a v4f32 build_vector of all-constant values into a 
register instead of loading each element individually.

llvm-svn: 40478
 2007-07-24 22:55:08 +00:00
Owen Anderson
b9ad251288 Add initial support for non-local memory dependence analysis. 
NOTE: This has only been cursorily tested.  Expected improvements soon.

llvm-svn: 40476
 2007-07-24 21:52:37 +00:00
Owen Anderson
f22326ad3d Make the copy constructor of SmallPtrSet much faster. 
llvm-svn: 40474
 2007-07-24 21:31:23 +00:00
Anton Korobeynikov
e8170a07f8 Heal EH handling stuff by emitting correct offsets to callee-saved registers. 
Pretty hackish, but code itself is dirty mess, so we won't make anything worse. :)

llvm-svn: 40472
 2007-07-24 21:07:39 +00:00
Owen Anderson
eb9f1b612c Add a GVN pass, using the value numbering code I developed for GVNPRE and the 
load elimination code from RedundantLoadElimination.

llvm-svn: 40469
 2007-07-24 17:55:58 +00:00
Reid Spencer
4e179b88aa Make output match actual condition tested. Thanks, Duncan. 
llvm-svn: 40464
 2007-07-24 14:35:44 +00:00
Devang Patel
aa2a753350 Unreachable block is not a root node in post dominator tree. 
llvm-svn: 40458
 2007-07-24 01:02:25 +00:00
Owen Anderson
5969a3cb91 Rename a lot of things to change FastDLE to RedundantLoadElimination. 
llvm-svn: 40457
 2007-07-24 00:17:04 +00:00
Owen Anderson
2aab0eafe9 Rename FastDLE as RedundantLoadElimination. 
llvm-svn: 40456
 2007-07-24 00:08:38 +00:00
Reid Spencer
b9f23cc28b 1. Make sure we print the Function Value for parameter attribute errors 
2. Fold an if statement into the Assert1 macro call.

llvm-svn: 40455
 2007-07-23 23:46:43 +00:00
Reid Spencer
6286ca1d69 Add better verification of attributes on function types. It is not permitted 
to use sret or inreg on the function. It is equally illegal to use noreturn
or nounwind on a parameter; they only go with the function. This patch
enforces these rules.

llvm-svn: 40453
 2007-07-23 23:09:55 +00:00
Owen Anderson
0a79ada820 Don't delete volatile loads. Doing so is not safe. 
llvm-svn: 40448
 2007-07-23 22:05:54 +00:00
Owen Anderson
bd3360e856 Add FastDLE, the load-elimination counterpart of FastDSE. 
llvm-svn: 40445
 2007-07-23 21:48:08 +00:00
Dan Gohman
54b8032d64 Fix some uses of dyn_cast to be uses of cast. 
llvm-svn: 40443
 2007-07-23 20:24:29 +00:00
Dan Gohman
e2dcfd1516 Delete the svn:executable property on these files, which aren't executable. 
llvm-svn: 40441
 2007-07-23 19:26:08 +00:00
Owen Anderson
d3a8c81c04 Fix file header. 
llvm-svn: 40440
 2007-07-23 18:30:37 +00:00
Chris Lattner
914de64a0a completely remove a transformation that is unsafe in the face of 
undefs.

llvm-svn: 40439
 2007-07-23 17:10:17 +00:00
Bill Wendling
97342a9b0c Add missing SSE builtins: 
__builtin_ia32_cvtss2si64
    __builtin_ia32_cvttss2si64
    __builtin_ia32_cvtsi642ss
    __builtin_ia32_cvtsd2si64
    __builtin_ia32_cvttsd2si64
    __builtin_ia32_cvtsi642sd

llvm-svn: 40411
 2007-07-23 03:07:27 +00:00
Reid Spencer
dd93d5abaa Report an error if one occurs in releaseModule. 
llvm-svn: 40405
 2007-07-22 21:39:37 +00:00
Devang Patel
f45fc256e1 Apply temporary work around to fix llvm mis-compilation 
reported in PR 1556.

llvm-svn: 40133
 2007-07-21 00:34:29 +00:00
Evan Cheng
53cb03b583 No more noResults. 
llvm-svn: 40132
 2007-07-21 00:34:19 +00:00
Dan Gohman
ac8ccab48f Don't assume that only Uses can be kills. Defs are marked as kills initially 
when there are no uses. This fixes a dangling-pointer bug, where pointers to
deleted instructions were not removed from kills lists. More info here:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-July/009749.html

llvm-svn: 40131
 2007-07-20 23:17:34 +00:00
Chris Lattner
c157b172c1 zext(undef) = 0 and sext(undef) = 0, not undef. 
This hopefully fixes a miscompilation of TargetData.cpp when self hosting.

llvm-svn: 40125
 2007-07-20 22:09:02 +00:00
Chris Lattner
9663eb4a5b this xform is already done by the constant folder. 
llvm-svn: 40124
 2007-07-20 22:06:41 +00:00
Evan Cheng
cdb4e7949f Added -print-emitted-asm to print out JIT generated asm to cerr. 
llvm-svn: 40123
 2007-07-20 21:56:13 +00:00
Devang Patel
133b5cb6b6 Use SmallVector instead of std::vector. 
llvm-svn: 40109
 2007-07-20 18:04:54 +00:00
Dan Gohman
87107326f6 Optimize alignment of loads and stores. 
llvm-svn: 40102
 2007-07-20 16:34:21 +00:00
Duncan Sands
4b390d541e Place SCCPSolver also in the anonymous namespace. This 
pacifies g++-4.2.

llvm-svn: 40089
 2007-07-20 08:56:21 +00:00
Owen Anderson
89afa507b1 Fix a bug where we were marking GEP expressions with the wrong opcode. 
llvm-svn: 40085
 2007-07-20 08:19:20 +00:00
Owen Anderson
3a92d35e62 When removing instructions from the analysis, be sure to check the confirmed 
flag when determining what to do with dependencies.

llvm-svn: 40079
 2007-07-20 06:16:07 +00:00
Evan Cheng
ac92a8149e Because we promote SSE logical ops and loads to v2i64, we often end up generate 
code that cross integer / floating point domains (e.g. generate pxor / pand for
logical ops on floating point value, movdqa to load / store floating point SSE
values). Given that, it's better to use movaps instead of movdqa and movups
instead of movdqu. They have the same latency but the "aps" variants are one
byte shorter.
If the domain crossing problem is a real performance issue, then we will have to
fix it with dynamic programming based isel.

llvm-svn: 40076
 2007-07-20 00:27:43 +00:00
Evan Cheng
f8d66a1eec Oops. These stores actually produce results. 
llvm-svn: 40074
 2007-07-20 00:20:46 +00:00
Evan Cheng
ba990bbc3f Fix custom lowering of SSE FXOR. 
llvm-svn: 40071
 2007-07-19 23:36:01 +00:00
Evan Cheng
f11cf2cad8 Fix patterns so we isel the xorps, etc. for floating pt logical SSE ops. DAG combiner may fold away the (bit_convert (load)). 
llvm-svn: 40070
 2007-07-19 23:34:10 +00:00
Reid Spencer
44d34e9b61 For PR1553: 
Change the keywords for the zext and sext parameter attributes to be 
zeroext and signext so they don't conflict with the keywords for the
instructions of the same name. This gets around the ambiguity.

llvm-svn: 40069
 2007-07-19 23:13:04 +00:00
Reid Spencer
bcbcea4547 Hush a noisy warning from GCC 4.2 about overflow during conversion by using 
the type "unsigned" instead of uintptr_t for a 1-bit structure field.

llvm-svn: 40066
 2007-07-19 21:05:30 +00:00
Owen Anderson
3b1129af78 Make val_replace fail early, which reduces the time to optimize 403.gcc to 14.8s. 
llvm-svn: 40064
 2007-07-19 19:57:13 +00:00
Devang Patel
45675e56ad Verify loop info. 
llvm-svn: 40062
 2007-07-19 18:02:32 +00:00
Duncan Sands
8c6657894f Replace mysterious code causing a g++-4.2 warning 
with hopefully correct code that pleases g++-4.2.

llvm-svn: 40051
 2007-07-19 09:42:01 +00:00
Duncan Sands
840594467f As pointed out by g++-4.2, the original code didn't do 
what it thought it was doing.

llvm-svn: 40044
 2007-07-19 07:31:58 +00:00
Owen Anderson
21e3bd1cdc Remember to free the heap allocated array if we're not going to use it. 
llvm-svn: 40043
 2007-07-19 06:45:33 +00:00
Owen Anderson
57d33add2c Use SmallVector and DenseMap in even more places. 
With this, the time to optimize 403.gcc is down to 15.1s.

llvm-svn: 40042
 2007-07-19 06:37:56 +00:00
Owen Anderson
7a4b965739 Change ValueTable to use a DenseMap for mapping expressions to value numbers. 
This results in a slight speedup for 403.gcc.

llvm-svn: 40040
 2007-07-19 06:13:15 +00:00
Devang Patel
9c100bc7e9 Set up ground work to verify preserved analysis info. 
llvm-svn: 40039
 2007-07-19 05:36:09 +00:00
Owen Anderson
c32df0bc73 Move some sets and maps to SmallPtrSet and DenseMap respectively. This 
reduces the time to optimize 403.gcc from 17.6s to 16.4s.

llvm-svn: 40036
 2007-07-19 03:32:44 +00:00
Devang Patel
fe0ef94227 After a basic block is split into two parts, 
second part dominates all the blocks dominated
by original basic block. And first part dominates
second part.

llvm-svn: 40035
 2007-07-19 02:29:24 +00:00
Devang Patel
4020116257 Now this temp. fix is not required. 
llvm-svn: 40034
 2007-07-19 02:22:21 +00:00
Evan Cheng
8312ed6f77 Change instruction description to split OperandList into OutOperandList and 
InOperandList. This gives one piece of important information: # of results
produced by an instruction.
An example of the change:
def ADD32rr  : I<0x01, MRMDestReg, (ops GR32:$dst, GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;
=>
def ADD32rr  : I<0x01, MRMDestReg, (outs GR32:$dst), (ins GR32:$src1, GR32:$src2),
                 "add{l} {$src2, $dst|$dst, $src2}",
                 [(set GR32:$dst, (add GR32:$src1, GR32:$src2))]>;

llvm-svn: 40033
 2007-07-19 01:14:50 +00:00
Evan Cheng
45eb268032 Only adjust esp around calls in presence of alloca. 
llvm-svn: 40030
 2007-07-19 00:42:58 +00:00
Evan Cheng
30e121adf6 Only adjust esp around calls in presence of alloca. 
llvm-svn: 40028
 2007-07-19 00:42:05 +00:00
Devang Patel
ef7c515e9a Fix typo. 
llvm-svn: 40025
 2007-07-18 23:50:19 +00:00
Devang Patel
b5482a65c9 Fix dominator info update to accommodate CFG changes. 
This fixes PR1559.

llvm-svn: 40024
 2007-07-18 23:48:20 +00:00
Evan Cheng
5dd17373c5 Add comment. 
llvm-svn: 40022
 2007-07-18 23:34:48 +00:00
Evan Cheng
6a4fb5d62b Use MOV instead of LEA to restore ESP if callee-saved frame size is 0; if previous instruction updates esp, fold it in. 
llvm-svn: 40018
 2007-07-18 21:26:06 +00:00
Dan Gohman
4d64f82ab5 Add constructor overloads for LoadInst and StoreInst that insert at the 
end of a BasicBlock and have an alignment parameter.

llvm-svn: 40016
 2007-07-18 20:51:11 +00:00
Dan Gohman
2fc9d5171e Implement initial memory alignment awareness for SSE instructions. Vector loads 
and stores that have a specified alignment of less than 16 bytes now use
instructions that support misaligned memory references.

llvm-svn: 40015
 2007-07-18 20:23:34 +00:00
Owen Anderson
03b56ad400 Fix an issue where assignments that caused a SmallPtrSet to become non-small 
would result in calling realloc() on a null pointer.  Instead, if we encounter
this situation, make a normal call to malloc().

llvm-svn: 40014
 2007-07-18 19:54:15 +00:00
Dan Gohman
4c140b7128 It's not necessary to do rounding for alloca operations when the requested 
alignment is equal to the stack alignment.

llvm-svn: 40004
 2007-07-18 16:29:46 +00:00
Evan Cheng
cee32b53a4 New entry. 
llvm-svn: 39998
 2007-07-18 08:21:49 +00:00
Evan Cheng
cf0fdbc249 Fold prologue esp update when possible. 
llvm-svn: 39984
 2007-07-17 21:26:42 +00:00
Evan Cheng
6ad7064bdf Dead code. 
llvm-svn: 39979
 2007-07-17 20:01:19 +00:00
Evan Cheng
26f6d71d26 Make sure not to break eh_return. 
llvm-svn: 39978
 2007-07-17 18:40:47 +00:00
Evan Cheng
70b79bfa0e Update. 
llvm-svn: 39977
 2007-07-17 18:39:45 +00:00
Evan Cheng
46a48c5c3e Missed the case where alloca is used but the stack size (not including callee-saved portion) is zero. Thanks Dan. 
llvm-svn: 39974
 2007-07-17 18:03:34 +00:00
Rafael Espindola
d70763bb0e detect invalid combination of sret and byval 
llvm-svn: 39971
 2007-07-17 13:34:23 +00:00
Evan Cheng
532b73311e Use push / pop for prologues and epilogues. 
llvm-svn: 39967
 2007-07-17 07:59:08 +00:00
Chris Lattner
71e2481181 no email addrs in file headers 
llvm-svn: 39962
 2007-07-17 05:56:43 +00:00
Reid Spencer
3dd7b1699b Unbreak the build by putting calls to free into the implementation file and 
having that implementation file #include <cstdlib>.

llvm-svn: 39952
 2007-07-17 02:16:12 +00:00
Owen Anderson
55b794723f Take advantage of undefined behavior if the source program tries to GEP 
beyond the end of an alloca to make FastDSE faster and more aggressive.

llvm-svn: 39945
 2007-07-16 23:34:39 +00:00
Owen Anderson
efc00e35cf Add support for walking up memory def chains, which enables finding many more 
dead stores on 400.perlbench.

llvm-svn: 39929
 2007-07-16 21:52:50 +00:00
Owen Anderson
f01c29815d Use realloc() to (potentially) resize the contents of SmallPtrSet in place. 
llvm-svn: 39926
 2007-07-16 21:27:44 +00:00
Reid Spencer
9496d63260 Return Undef if the block has no dominator. This was required to allow 
llvm-gcc build to succeed. Without this change it fails in libstdc++
compilation. This causes no regressions in dejagnu tests. However, 
someone who knows this code better might want to review it.

llvm-svn: 39924
 2007-07-16 21:03:44 +00:00
Dan Gohman
ef7c87f4d8 Use ConstantFoldFP for folding all unary floating-point operations which may 
have an error, and refector out the code for binary operators into
ConstantFoldBinaryFP and use it for all binary floating-point operations
which may have an error. These functions still rely exclusively on errno
to detect errors though.

llvm-svn: 39923
 2007-07-16 15:26:22 +00:00
Dan Gohman
0ba554c0c8 Fix comments about vectors to use the current wording. 
llvm-svn: 39921
 2007-07-16 14:29:03 +00:00
Chris Lattner
66b7f0c956 Repair a regression in Transforms/InstCombine/mul.ll that Reid noticed. 
llvm-svn: 39896
 2007-07-16 04:15:34 +00:00
Nick Lewycky
6cdd641e1d Start adding and cleaning up comments. 
llvm-svn: 39894
 2007-07-16 02:58:37 +00:00
Nick Lewycky
43e5fd5be7 Handle decrementing loops properly. Fixes PR1533. 
Always pass the constant as the second parameter to HowManyLessThans.

Remove obsolete "isSigned" parameter.

llvm-svn: 39893
 2007-07-16 02:08:00 +00:00
Chris Lattner
f6a91d74e0 Implement shift-simplify.ll:test[45]. 
First teach instcombine that sign bit checks only demand the 
sign bit, this allows simplify demanded bits to hack on 
expressions better.

Second, teach instcombine that ashr is useless if only the
sign bit is demanded.

llvm-svn: 39880
 2007-07-15 20:54:51 +00:00
Chris Lattner
9cb8da1cb8 Implement shift-simplify.ll:test3, turning: 
(X << 31) <s 0  --> (X&1) != 0

This happens dozens of times in the CFE.

llvm-svn: 39879
 2007-07-15 20:42:37 +00:00
Nick Lewycky
701e227136 Clarify the language. Pointed out by Duncan Sands. 
llvm-svn: 39857
 2007-07-14 17:41:03 +00:00
Nick Lewycky
05e4170839 Fix the build. Patch from Holger Schurig. 
llvm-svn: 39856
 2007-07-14 15:11:14 +00:00
Anton Korobeynikov
5635277c36 Long live the exception handling! 
This patch fills the last necessary bits to enable exceptions
handling in LLVM. Currently only on x86-32/linux.

In fact, this patch adds necessary intrinsics (and their lowering) which
represent really weird target-specific gcc builtins used inside unwinder.

After corresponding llvm-gcc patch will land (easy) exceptions should be
more or less workable. However, exceptions handling support should not be 
thought as 'finished': I expect many small and not so small glitches
everywhere.

llvm-svn: 39855
 2007-07-14 14:06:15 +00:00
Nick Lewycky
93d39c53b6 Use maximal intersection algorithm exclusively. Fixes miscompile bug. 
llvm-svn: 39852
 2007-07-14 04:28:04 +00:00
Nick Lewycky
42e8a060a0 Add alternate ConstantRange intersection algorithm. 
llvm-svn: 39851
 2007-07-14 02:51:34 +00:00
Devang Patel
9166ad7658 Make LCSSA a loop pass. 
llvm-svn: 39844
 2007-07-13 23:57:11 +00:00
Evan Cheng
260a390840 Fix for PR1540: Specify F0, F1 are sub-registers of D0, etc. 
llvm-svn: 39843
 2007-07-13 23:55:50 +00:00
Owen Anderson
9ade055c0f Handle GEPs with all-zero indices in the same way we handle pointer-pointer bitcasts. Also, fix a potentia infinite loop. 
This brings FastDSE to parity with old DSE on 175.vpr.

llvm-svn: 39839
 2007-07-13 22:50:48 +00:00
Devang Patel
cfdf3b6eff Disable claims to preserve analysis until open issues are resolved. 
llvm-svn: 39834
 2007-07-13 21:53:42 +00:00
Dan Gohman
44771cf8e8 Fix the comment for LegalizeOp to more accurately reflect what it does. 
llvm-svn: 39827
 2007-07-13 20:14:11 +00:00
Dan Gohman
1f4580ceb4 Don't call SimplifyVBinOp for non-vector operations, following earlier review 
feedback. This theoretically makes the common (scalar) case more efficient.

llvm-svn: 39823
 2007-07-13 20:03:40 +00:00
Owen Anderson
275a5ef481 Be more aggressive in removing dead stores, and in removing instructions trivially dead after DSE. 
This drastically improves the effect of FastDSE on kimwitu++.

llvm-svn: 39819
 2007-07-13 18:26:26 +00:00
Dale Johannesen
1a9d304c35 Modify previous patch per review comments. 
llvm-svn: 39817
 2007-07-13 17:31:29 +00:00
Dale Johannesen
469ed8e17e Skeleton of post-RA scheduler; doesn't do anything yet. 
Change name of -sched option and DEBUG_TYPE to
pre-RA-sched; adjust testcases.

llvm-svn: 39816
 2007-07-13 17:13:54 +00:00
Chris Lattner
7cba3578aa Fix CodeGen/Generic/print-arith-fp.ll on sparc (PR1551) 
llvm-svn: 39813
 2007-07-13 16:24:10 +00:00
Owen Anderson
0ad3e0795b Reimplement removing stores to allocas at the end of a function. This should be safe now. 
llvm-svn: 39790
 2007-07-12 21:41:30 +00:00
Owen Anderson
999d27d563 Make the condition-checking for free with non-trivial dependencies more correct. 
llvm-svn: 39789
 2007-07-12 18:08:51 +00:00
Owen Anderson
6edb47d8be Remove the end-block handling code. It was unsafe, and making it safe would have resulted in falling back to the slow DSE case. I need to think some more about the right way to handle this. 
llvm-svn: 39788
 2007-07-12 17:52:20 +00:00
Dale Johannesen
eb2c2823e3 ARM: make branch folder remove unconditional branches 
following jump tables that it earlier inserted.  This
would be OK on other targets but is needed for correctness
only on ARM (constant islands needs to find jump tables).

llvm-svn: 39782
 2007-07-12 16:45:35 +00:00
Duncan Sands
b2a18dc10b The type ids making up a filter are unsigned, and 
should be output as unsigned values.  Checked against
gcc.

llvm-svn: 39775
 2007-07-12 13:51:39 +00:00
Gabor Greif
33f07df616 checked in as obvious, 
thanks Benoit Boissinot!

llvm-svn: 39774
 2007-07-12 13:31:38 +00:00
Chris Lattner
7eea439048 another missed SSE optimization 
llvm-svn: 39772
 2007-07-12 06:31:38 +00:00
Owen Anderson
b6211f5b50 Let MemoryDependenceAnalysis take care of updating AliasAnalysis. 
llvm-svn: 39769
 2007-07-12 00:06:21 +00:00
Devang Patel
f26f0ea111 Preserve analysis info. 
llvm-svn: 39767
 2007-07-11 23:47:28 +00:00
Bruno Cardoso Lopes
27f5beafb2 Added support for Mips specific GAS directives 
Fixed print immediate 
Fixed Identation on MipsISelDAGToDAG.cpp

llvm-svn: 39764
 2007-07-11 23:24:41 +00:00
Bruno Cardoso Lopes
e21704313d Added support for framepointer 
Prologue/Epilogue support fp,ra save/restore and use the stack frame the right
way!

llvm-svn: 39763
 2007-07-11 23:21:31 +00:00
Owen Anderson
733ff7bbc0 Handle the case where an entire structure is freed, and its dependency is a store to a field within 
that structure.

Also, refactor the runOnBasicBlock() function, splitting some of the special cases into separate functions.

llvm-svn: 39762
 2007-07-11 23:19:17 +00:00
Bruno Cardoso Lopes
0ba66ea1dc Now that stack is represented the right way, LOA starts at 0 
llvm-svn: 39761
 2007-07-11 23:17:41 +00:00
Bruno Cardoso Lopes
be14b3c16c Fixed AddLiveOut issues 
FI's created the write way to represent Mips stack

llvm-svn: 39760
 2007-07-11 23:16:16 +00:00
Bruno Cardoso Lopes
bc1b534410 Removed unused immediate PatLeaf, fixed lui instruction 
llvm-svn: 39759
 2007-07-11 22:47:02 +00:00
Bruno Cardoso Lopes
a851ed6989 Added MipsMachineFunction class, to hold Mips dinamic stack info when inserting Prologue/Epilog 
llvm-svn: 39758
 2007-07-11 22:44:21 +00:00
Owen Anderson
fb23f70dbf Add support for eliminate stores to stack-allocated memory locations at the end 
of a function.

llvm-svn: 39754
 2007-07-11 21:06:56 +00:00
Owen Anderson
2388e80b0a Handle eliminating stores that occur right before a free. 
llvm-svn: 39753
 2007-07-11 20:38:34 +00:00
Lauro Ramos Venancio
0ad4cde600 Handle packed structs in the CBackend. 
llvm-svn: 39752
 2007-07-11 19:56:53 +00:00
Evan Cheng
c7216b3a86 Missed a couple of places where new instructions are added due to spill / restore. 
llvm-svn: 39748
 2007-07-11 19:17:18 +00:00
Owen Anderson
28789d81c5 Clean up a few things based on Chris' feedback. 
llvm-svn: 39747
 2007-07-11 19:03:09 +00:00
Tanya Lattner
a715bbe152 Adding ability to demote phi to stack. 
llvm-svn: 39744
 2007-07-11 18:41:34 +00:00
Dale Johannesen
cacc6dbeb6 Fix hang compiling TimberWolf (allow for islands 
of size other than 4).

llvm-svn: 39743
 2007-07-11 18:32:38 +00:00
Lauro Ramos Venancio
18fc770fd0 Assert when TLS is not implemented. 
llvm-svn: 39737
 2007-07-11 17:19:51 +00:00
Duncan Sands
bfbe683782 Exception handling has been implemented. 
llvm-svn: 39732
 2007-07-11 16:59:20 +00:00
Chris Lattner
ef484ab964 Fix an oversight: for modules with no other identifying target info, 
the sparc backend should be preferred when running on sparcs.

llvm-svn: 39142
 2007-07-11 16:32:10 +00:00
Duncan Sands
aa83dc9037 If assertions are not enabled, we should return False here. 
llvm-svn: 38535
 2007-07-11 08:47:55 +00:00
Evan Cheng
2791a7ea6d No longer need to track last def / use. 
llvm-svn: 38534
 2007-07-11 08:47:44 +00:00
Evan Cheng
c42a2e03f1 Fix for PR1545: Revamp code that update kill information due to register reuse. 
llvm-svn: 38525
 2007-07-11 05:28:39 +00:00
Owen Anderson
1eaba31f12 Add FastDSE, a new algorithm for doing dead store elimination. This algorithm is not as accurate 
as the current DSE, but it only a linear scan over each block, rather than quadratic.  Eventually
(once it has been improved somewhat), this will replace the current DSE.

NOTE: This has not yet been extensively tested.
llvm-svn: 38517
 2007-07-11 00:46:18 +00:00
David Greene
8d77dcca00 Make this work with GLIBCXX_DEBUG. 
llvm-svn: 38516
 2007-07-10 22:00:30 +00:00
Evan Cheng
f6d010e93d Didn't mean the last commit. Revert. 
llvm-svn: 38515
 2007-07-10 22:00:16 +00:00
Dale Johannesen
ecef839eaa Fix fp_constant_op failure. 
llvm-svn: 38514
 2007-07-10 21:53:30 +00:00
Evan Cheng
05c784cc30 Update. 
llvm-svn: 38513
 2007-07-10 21:49:47 +00:00
Dale Johannesen
7325a82196 fix 80 columnn violations, increasing the world's 
pedantic satisfaction level.

llvm-svn: 38512
 2007-07-10 20:53:41 +00:00
Owen Anderson
bb0f7c00ab Calculate the size of a array allocation correctly. 
llvm-svn: 38511
 2007-07-10 20:48:38 +00:00
Owen Anderson
04b3497eb7 Fix a crasher when finding the dependency of a call. 
llvm-svn: 38510
 2007-07-10 20:39:07 +00:00
Owen Anderson
b11a2f3a32 Make this pass registration static as well. 
llvm-svn: 38509
 2007-07-10 20:21:08 +00:00
Owen Anderson
7d38ac8a37 Make the pass registration static. 
llvm-svn: 38508
 2007-07-10 20:20:19 +00:00
Chris Lattner
abcdeef610 add a note 
llvm-svn: 38507
 2007-07-10 20:03:50 +00:00
Rafael Espindola
c0d9376230 check for correct usage of the byval attribute 
llvm-svn: 38506
 2007-07-10 19:28:12 +00:00
Anton Korobeynikov
7971c2c9b7 During module cloning copy aliases too. This fixes PR1544 
llvm-svn: 38505
 2007-07-10 19:07:35 +00:00
Owen Anderson
6c92149ce5 Handle vaarg instructions correctly. 
llvm-svn: 38504
 2007-07-10 18:43:15 +00:00
Dan Gohman
629311ca52 Change the peep for EXTRACT_VECTOR_ELT of BUILD_PAIR to look for 
the new CONCAT_VECTORS node type instead, as that's what legalize
uses now. And add a peep for EXTRACT_VECTOR_ELT of INSERT_VECTOR_ELT.

llvm-svn: 38503
 2007-07-10 18:20:44 +00:00
Owen Anderson
f4bea94dbd Volatile loads and stores depend on each other. 
llvm-svn: 38502
 2007-07-10 18:11:42 +00:00
Evan Cheng
abcf3842bb Remove clobbersPred. Add an OptionalDefOperand to instructions which have the 's' bit. 
llvm-svn: 38501
 2007-07-10 18:08:01 +00:00
Evan Cheng
0ab209fa54 Remove clobbersPred. 
llvm-svn: 38500
 2007-07-10 18:07:08 +00:00
Owen Anderson
1f5fb875b6 Add support for finding the dependencies of call and invoke instructions. 
llvm-svn: 38497
 2007-07-10 17:59:22 +00:00
Evan Cheng
d80c2821af If the operand is marked M_OPTIONAL_DEF_OPERAND, then it's a def. 
llvm-svn: 38496
 2007-07-10 17:52:20 +00:00
Evan Cheng
87e735c4be Somehow this wasn't committed last time. M_CLOBBERS_PRED is gone. 
llvm-svn: 38495
 2007-07-10 17:50:43 +00:00
Owen Anderson
1bd416b823 Fix the build, and fix the handling of pointer sizes. 
llvm-svn: 38494
 2007-07-10 17:25:03 +00:00
Owen Anderson
1fabbda503 Fix a bunch of things from Chris' feedback 
llvm-svn: 38493
 2007-07-10 17:08:11 +00:00
Dan Gohman
bd0ff28e1c Fix a bug in the folding of binary operators to undef. 
Thanks to Lauro for spotting this!

llvm-svn: 38491
 2007-07-10 15:19:29 +00:00
Dan Gohman
6b21e11f1c Fix the folding of undef in several binary operators to recognize 
undef in either the left or right operand.

llvm-svn: 38489
 2007-07-10 14:20:37 +00:00
Evan Cheng
cf3b1c89a9 When a node value is only used by a CopyToReg, use the user's dest. This should not be restricted to nodes that produce only a single value. 
llvm-svn: 38485
 2007-07-10 07:08:32 +00:00
Evan Cheng
23dc96f640 Move DenseMapKeyInfo<SDOperand> from LegalizeDAG.cpp to SelectionDAGNodes.h 
llvm-svn: 38484
 2007-07-10 06:59:55 +00:00
Nick Lewycky
ea767d42e8 Update the ValueRanges interface to use value numbers instead of Value*s. 
llvm-svn: 38483
 2007-07-10 03:28:21 +00:00
Owen Anderson
4ce919d799 Move some key maps from std::map to DenseMap. This improves the time to optimize Anton's testcase from 17.5s 
to 15.7s.

llvm-svn: 38480
 2007-07-10 00:27:22 +00:00
Owen Anderson
65f9dd6973 Use a cheaper test, delaying calling find_leader() until we know that it's necessary. This improves 
the time to optimize Anton's testcase from 21.1s to 17.6s.

llvm-svn: 38479
 2007-07-10 00:09:25 +00:00
Dan Gohman
928144b051 Define non-intrinsic instructions for vector min, max, sqrt, rsqrt, and rcp, 
in addition to the intrinsic forms. Add spill-folding entries for these new
instructions, and for the scalar min and max instrinsic instructions which
were missing. And add some preliminary ISelLowering code for using the new
non-intrinsic vector sqrt instruction, and fneg and fabs.

llvm-svn: 38478
 2007-07-10 00:05:58 +00:00
Owen Anderson
2106613ce6 Add an assertion if find_leader fails. 
llvm-svn: 38477
 2007-07-09 23:57:18 +00:00
Owen Anderson
8d4339f8db Take advantage of the new fast SmallPtrSet assignment operator when propagating AVAIL_OUT sets. 
This reduces the time to optimize Anton's testcase from 31.2s to 21.s!

llvm-svn: 38475
 2007-07-09 22:29:50 +00:00
Owen Anderson
31bda05073 Make the assignment operator for SmallPtrSet much faster for normal cases. 
llvm-svn: 38474
 2007-07-09 22:27:20 +00:00
Dan Gohman
150487b166 Preserve volatililty and alignment information when lowering or 
simplifying loads and stores.

llvm-svn: 38473
 2007-07-09 22:18:38 +00:00
Devang Patel
65f3717db9 Expose struct size threhold to allow users to tweak their own setting. 
llvm-svn: 38472
 2007-07-09 21:19:23 +00:00
Dan Gohman
81cfdc2f19 Change getCopyToParts and getCopyFromParts to always use target-endian 
register ordering, for both physical and virtual registers. Update the PPC
target lowering for calls to expect registers for the call result to
already be in target order.

llvm-svn: 38471
 2007-07-09 20:59:04 +00:00
Owen Anderson
e48ed4f7a8 Make the assignment operator for SmallPtrSet return a reference, and fix a long-standing bug in the copy 
ctor while I'm at it.

Thanks to Chris Lattner for help with this patch.

llvm-svn: 38470
 2007-07-09 20:59:01 +00:00
Devang Patel
f1b6294e80 Fix memory leak. 
llvm-svn: 38469
 2007-07-09 20:52:39 +00:00
Dan Gohman
be352027e6 Initialize the IndexedModeActions array with memset before 
updating it with calls to setIndexedLoadAction/setIndexedStoreAction,
which only update a few bits at a time. This avoids ostensible
undefined behavior of operationg on values which may be
trap-representations, and as a practical matter fixes errors from
valgrind, which doesn't track uninitialized memory with bit
granularity.

llvm-svn: 38468
 2007-07-09 20:49:44 +00:00
Owen Anderson
e12cbdb0be Fix an error in the assignment operator that was causing an infinite loop in GVNPRE.cpp. 
Patch by Chis Lattner.

llvm-svn: 38467
 2007-07-09 18:51:15 +00:00
Chris Lattner
4810c53b05 The various "getModuleMatchQuality" implementations should return 
zero if they see a target triple they don't understand.

llvm-svn: 38463
 2007-07-09 17:25:29 +00:00