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11611 Commits

Author SHA1 Message Date
Andrew Lenharth
fe9234db9b byte zap not immediate goodness 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23855 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-21 01:24:05 +00:00
Nate Begeman
405e3ecb56 Invert the TargetLowering flag that controls divide by consant expansion. 
Add a new flag to TargetLowering indicating if the target has really cheap
  signed division by powers of two, make ppc use it.  This will probably go
  away in the future.
Implement some more ISD::SDIV folds in the dag combiner
Remove now dead code in the x86 backend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23853 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-21 00:02:42 +00:00
Andrew Lenharth
1f347a318c Inst cleanup. As a bonus, operands are in the correct order for cmovs. Expect new stuff to pass in the JIT tonight 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23852 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 23:58:36 +00:00
Chris Lattner
eae6d648da Use a literal to define ineg instead of immzero 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23851 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 23:30:37 +00:00
Chris Lattner
cef6010c64 Fix a conditional so we don't access past the end of the range. Thanks to 
Andrew for bringing this to my attn.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23850 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 22:50:10 +00:00
Andrew Lenharth
964b6aacb4 added a few 1 operand form stuff. Seems to break regalloc on alpha. sigh 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23849 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 19:39:24 +00:00
Andrew Lenharth
d684e1a64d add cttz and ctpop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23848 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 19:38:11 +00:00
Nate Begeman
c6a454e8d5 Fix a couple bugs in the const div stuff where we'd generate MULHS/MULHU 
for types that aren't legal, and fail a divisor is less than zero
comparison, which would cause us to drop a subtract.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23846 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 17:45:03 +00:00
Chris Lattner
f75f2a0a02 don't use llabs with apparently VC++ doesn't have 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23845 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 17:01:00 +00:00
Chris Lattner
8317e12cef Fix order of eval problem from when I refactored this into a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23844 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 16:56:40 +00:00
Andrew Lenharth
892ade722a Sounds good, finish the intop conversion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23843 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 14:42:48 +00:00
Nate Begeman
12a923408c Add some more patterns for i64 on ppc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23842 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 07:51:08 +00:00
Chris Lattner
b0fa11ca41 add a new method, play around with some code. 
Fix a *bug* in the extendIntervalEndTo method.  In particular, if adding
[2:10) to an interval containing [0:2),[10:30), we produced [0:10),[10,30).
Which is not the most smart thing to do.  Now produce [0:30).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23841 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 07:39:25 +00:00
Chris Lattner
f5ce2678f6 Refactor some code, pulling it out into a function. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23839 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 06:06:30 +00:00
Chris Lattner
1e9f3af561 Do NOT touch FP ops with LSR. This fixes a testcase Nate sent me from an 
inner loop like this:

LBB_RateConvertMono8AltiVec_2:  ; no_exit
        lis r2, ha16(.CPI_RateConvertMono8AltiVec_0)
        lfs f3, lo16(.CPI_RateConvertMono8AltiVec_0)(r2)
        fmr f3, f3
        fadd f0, f2, f0
        fadd f3, f0, f3
        fcmpu cr0, f3, f1
        bge cr0, LBB_RateConvertMono8AltiVec_2  ; no_exit

to an inner loop like this:

LBB_RateConvertMono8AltiVec_1:  ; no_exit
        fsub f2, f2, f1
        fcmpu cr0, f2, f1
        fmr f0, f2
        bge cr0, LBB_RateConvertMono8AltiVec_1  ; no_exit

Doh! good catch!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23838 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 04:47:10 +00:00
Chris Lattner
ae4be981b1 Add some pattern fragments to simplify the repetitive parts of the patterns 
for some common ops and use them for a few examples.  Andrew, if you like
this, feel free to convert the rest over, if you hate it, feel free to
revert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23837 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 04:21:06 +00:00
Chris Lattner
d7cc4c407d simplify this a bit by using immediates 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23836 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 03:57:03 +00:00
Nate Begeman
6957523b9d Move the target constant divide optimization up into the dag combiner, so 
that the nodes can be folded with other nodes, and we can not duplicate
code in every backend.  Alpha will probably want this too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23835 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 02:15:44 +00:00
Andrew Lenharth
d97591a961 forgot this one 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23833 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 00:29:02 +00:00
Andrew Lenharth
4907d22a90 ret 0; works, not much else 
still lots of uglyness.
Maybe calls will come soon.
Fixing the return value of things will be necessary to make alpha work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23832 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-20 00:28:31 +00:00
John Criswell
9811ea4567 This fixes PR638: 
Regression/CodeGen/Generic/2004-02-08-UnwindSupport.llx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23831 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 20:07:15 +00:00
Jim Laskey
538421411a Added InstrSchedClass to each of the PowerPC Instructions. 
Note that when adding new instructions that you should refer to the table at the
bottom of PPCSchedule.td.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23830 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 19:51:16 +00:00
Nate Begeman
2d5aff761d Write patterns for the various shl and srl patterns that don't involve 
doing something clever.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23824 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 18:42:01 +00:00
Jim Laskey
0de8796e68 Push processor descriptions to the top of target and add command line info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23820 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 13:34:52 +00:00
Chris Lattner
f6cd147471 now that tblgen is smarter, use integers directly. This should help Andrew too 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23818 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 04:32:04 +00:00
Chris Lattner
14c09b81ea teach ppc backend these are copies 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23813 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 01:50:36 +00:00
Chris Lattner
8be1fa5dc5 Convert these cases to patterns 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23811 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 01:38:02 +00:00
Nate Begeman
8d94832394 Woo, it kinda works. We now generate this atrociously bad, but correct, 
code for long long foo(long long a, long long b) { return a + b; }

_foo:
        or r2, r3, r3
        or r3, r4, r4
        or r4, r5, r5
        or r5, r6, r6
        rldicr r2, r2, 32, 31
        rldicl r3, r3, 0, 32
        rldicr r4, r4, 32, 31
        rldicl r5, r5, 0, 32
        or r2, r3, r2
        or r3, r5, r4
        add r4, r3, r2
        rldicl r2, r4, 32, 32
        or r4, r4, r4
        or r3, r2, r2
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23809 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 01:12:32 +00:00
Chris Lattner
e5468305a0 apply some tblgen majik to simplify the X register definitions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23805 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 00:17:55 +00:00
Nate Begeman
5dc897b0e4 Teach Legalize how to do something with EXTRACT_ELEMENT when the type of 
the pair of elements is a legal type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23804 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 00:06:56 +00:00
Nate Begeman
da32c9eed6 Make a new reg class for 64 bit regs that aliases the 32 bit regs. This 
will have to tide us over until we get real subreg support, but it prevents
the PrologEpilogInserter from spilling 8 byte GPRs on a G4 processor.

Add some initial support for TRUNCATE and ANY_EXTEND, but they don't
currently work due to issues with ScheduleDAG.  Something wll have to be
figured out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23803 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-19 00:05:37 +00:00
Nate Begeman
4a95945fa5 Add the ability to lower return instructions to TargetLowering. This 
allows us to lower legal return types to something else, to meet ABI
requirements (such as that i64 be returned in two i32 regs on Darwin/ppc).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23802 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 23:23:37 +00:00
Chris Lattner
d222f6ab67 Fix Generic/2005-10-18-ZeroSizeStackObject.ll by not requesting a zero 
sized stack object if either the array size or the type size is zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23801 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 22:14:06 +00:00
Chris Lattner
2dfa8192ab remove hack 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23797 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 22:11:42 +00:00
Jim Laskey
21f587ca24 Simple edits; remove unimplimented cases and clarify long haul SLU cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23788 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 16:59:23 +00:00
Chris Lattner
841d12d9ac Fix the JIT encoding of LWA, LD, STD, and STDU. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23787 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 16:51:22 +00:00
Jim Laskey
076866c50f Checking in first round of scheduling tablegen files. Not tied in as yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23786 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 16:23:40 +00:00
Chris Lattner
3d8df55fed add a case 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23785 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 06:30:51 +00:00
Chris Lattner
a27ea769eb Add an option to this pass. If it is set, we are allowed to internalize 
all but main.  If it's not set, we can still internalize, but only if an
explicit symbol list is provided.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23783 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 06:29:22 +00:00
Chris Lattner
40c62d5069 Fold (select C, load A, load B) -> load (select C, A, B). This happens quite 
a lot throughout many programs.  In particular, specfp triggers it a bunch for
constant FP nodes when you have code like  cond ? 1.0 : -1.0.

If the PPC ISel exposed the loads implicit in pic references to external globals,
we would be able to eliminate a load in cases like this as well:

%X = external global int
%Y = external global int
int* %test4(bool %C) {
        %G = select bool %C, int* %X, int* %Y
        ret int* %G
}

Note that this breaks things that use SrcValue's (see the fixme), but since nothing
uses them yet, this is ok.

Also, simplify some code to use hasOneUse() on an SDOperand instead of hasNUsesOfValue directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23781 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 06:04:22 +00:00
Nate Begeman
9d2b817fcb Do the right thing and enable 64 bit regs under the control of a subtarget 
option.  Currently the only way to enable this is to specify the
64bitregs mattr flag.  It is never enabled by default on any config yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23779 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 00:56:42 +00:00
Nate Begeman
1d9d7427c4 First bits of 64 bit PowerPC stuff, currently disabled. A lot of this is 
purely mechanical.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23778 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 00:28:58 +00:00
Nate Begeman
a0e221dc75 Implement some feedback from Chris re: constant canonicalization 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23777 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 00:28:13 +00:00
Nate Begeman
419f8b62f7 Legalize BUILD_PAIR appropriately for upcoming 64 bit PowerPC work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23776 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 00:27:41 +00:00
Nate Begeman
11af4eaa6d fold fmul X, +2.0 -> fadd X, X; 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23774 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-17 20:40:11 +00:00
Chris Lattner
8532cf6258 Make this work for FP constantexprs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23773 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-17 20:18:38 +00:00
Chris Lattner
5e678e03b7 Oops, X+0.0 isn't foldable, but X+-0.0 is. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23772 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-17 17:56:38 +00:00
Chris Lattner
560a17d3bc relax this a bit, as we only support the default rounding mode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23771 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-17 17:49:32 +00:00
Chris Lattner
854077d3a5 add a trivial fold 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23764 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-17 01:07:11 +00:00
Nate Begeman
21e463b2bf More PPC32 -> PPC changes, as well as merging some classes that were 
redundant after the change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23759 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-16 05:39:50 +00:00
Chris Lattner
750dbd5950 Fix this logic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23756 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 22:35:40 +00:00
Chris Lattner
85d63bbff7 Add a case we were missing that was causing us to fail CodeGen/PowerPC/rlwinm.ll:test3 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23755 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 22:18:08 +00:00
Nate Begeman
34f342e36f Remove some dead code now that the dag combiner exists. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23754 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 22:08:02 +00:00
Chris Lattner
4cb5a1b896 Remove some dead code: the ORI/ORIS cases are autogen'd. This makes 
SelectIntImmediateExpr dead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23753 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 22:06:18 +00:00
Chris Lattner
de123822e5 prune #includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23752 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 21:58:54 +00:00
Chris Lattner
75c9f67370 These instructions are now autogenerated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23751 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 21:44:56 +00:00
Chris Lattner
e0b2e6372f Add a pattern for FSQRTS 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23750 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 21:44:15 +00:00
Chris Lattner
651dea74f6 remove dead code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23749 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 21:40:12 +00:00
Chris Lattner
8136cdae60 Use getExtLoad here instead of getNode, as extloads produce two values. This 
fixes a legalize failure on SPASS for itanium.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23747 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 20:24:07 +00:00
Chris Lattner
d242419e17 remove broken SRA/rlwimi case 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23746 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-15 19:04:48 +00:00
Chris Lattner
16e71f2f70 Rename PPC32*.h to PPC*.h 
This completes the grand PPC file renaming


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23745 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 23:59:06 +00:00
Chris Lattner
b9459b731a Merge PPCJITInfo.h and PPC32JITInfo.h. Note that the PowerPCJITInfo 
and PPC32JITInfo classes should be merged.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23744 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 23:53:41 +00:00
Chris Lattner
2668959b88 Rename PowerPC*.h to PPC*.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23743 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 23:51:18 +00:00
Chris Lattner
26bd0d48a1 Rename PowerPCInstrBuilder.h -> PPC* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23742 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 23:45:43 +00:00
Chris Lattner
ec4b73cb09 Nuke the PowerPCTargetMachine.h header. Note that the PowerPCTargetMachine 
still should be merged into the PPC32TargetMachine class


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23741 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 23:44:05 +00:00
Chris Lattner
f379997adc Rename PowerPC*.td -> PPC*.td 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23740 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 23:40:39 +00:00
Chris Lattner
f1ed100bc4 These are dead 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23739 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 23:38:51 +00:00
Chris Lattner
4c7b43b43f Eliminate PowerPC.td and PPC32.td, consolidating them into PPC.td 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23738 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 23:37:35 +00:00
Chris Lattner
e87bc1f3a8 Like the comment says... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23737 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 22:48:24 +00:00
Chris Lattner
617742b1b8 Nuke PowerPCInstrFormats.h, its contents are dead. Remove the definitions 
from the .td file that correspond to it


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23736 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 22:44:13 +00:00
Nate Begeman
14e2cf62f4 Properly split f32 and f64 into separate register classes for scalar sse fp 
fixing a bunch of nasty hackery


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23735 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 22:06:00 +00:00
Nate Begeman
e0de44adba Remove an unnecsesary file. PPC32 and PPC64 share architected registers. 
We will decide with subtarget support whether we ever use an i64 register
class.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23734 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 18:58:46 +00:00
Chris Lattner
444215dddc add the integer truncate/extension operations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23733 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 06:40:20 +00:00
Chris Lattner
3f31d4304c These are now autogenerated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23731 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 06:26:29 +00:00
Chris Lattner
7cb6491a0d Add patterns for FP round/extend 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23727 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 04:55:50 +00:00
Chris Lattner
13664a6194 add a new SDTCisOpSmallerThanOp type constraint, and implement fround/fextend in terms of it 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23726 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 04:55:10 +00:00
Nate Begeman
216def8ecf fold sext_in_reg, sext_in_reg where both have the same VT. This was 
popping up in Fourinarow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23722 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 01:29:07 +00:00
Chris Lattner
b4871ad694 Allow $ 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23721 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 01:28:34 +00:00
Nate Begeman
5054f16212 Relax the checking on zextload generation a bit, since as sabre pointed out 
you could be AND'ing with the result of a shift that shifts out all the
bits you care about, in addition to a constant.

Also, move over an add/sub_parts fold from legalize to the dag combiner,
where it works for things other than constants.  Woot!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23720 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-14 01:12:21 +00:00
Chris Lattner
24edbb7a6c Fix the trunc(load) case, finally allowing crafty and povray to pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23718 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 22:10:05 +00:00
Chris Lattner
f98840531a Fix some bugs in (sext (load x)) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23717 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 21:52:31 +00:00
Chris Lattner
9ad8481cfb When ExpandOp'ing a [SZ]EXTLOAD, make sure to remember that the chain 
is also legal.  Add support for ExpandOp'ing raw EXTLOADs too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23716 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 21:44:47 +00:00
Chris Lattner
4c8f8f0481 Implement PromoteOp for *EXTLOAD, allowing MallocBench/gs to Legalize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23715 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 20:07:41 +00:00
Nate Begeman
bfd65a05c9 Fix the remaining DAGCombiner issues pointed out by sabre. This should fix 
the remainder of the failures introduced by my patch last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23714 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 18:34:58 +00:00
Chris Lattner
67a44cd3aa Fix a minor bug in the dag combiner that broke pcompress2 and some other 
tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23713 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 18:16:34 +00:00
Nate Begeman
144ff660e6 Add support to Legalize for expanding i64 sextload/zextload into hi and lo 
parts. This should fix the crafty and signed long long unit test failure
on x86 last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23711 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 17:15:37 +00:00
Jim Laskey
53c523c00e Inhibit instructions from being pushed before function calls. This will 
minimize unnecessary spilling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23710 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 16:44:00 +00:00
Nate Begeman
ded4963ab9 Move some Legalize functionality over to the DAGCombiner where it belongs. 
Kill some dead code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23706 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-13 03:11:28 +00:00
Nate Begeman
765784ad76 Fix a potential bug with two combine-to's back to back that chris pointed 
out, where after the first CombineTo() call, the node the second CombineTo
wishes to replace may no longer exist.

Fix a very real bug with the truncated load optimization on little endian
targets, which do not need a byte offset added to the load.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23704 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-12 23:18:53 +00:00
Nate Begeman
3df4d525c5 More cool stuff for the dag combiner. We can now finally handle things 
like turning:

_foo:
        fctiwz f0, f1
        stfd f0, -8(r1)
        lwz r2, -4(r1)
        rlwinm r3, r2, 0, 16, 31
        blr

into
_foo:
        fctiwz f0,f1
        stfd f0,-8(r1)
        lhz r3,-2(r1)
        blr

Also removed an unncessary constraint from sra -> srl conversion, which
should take care of hte only reason we would ever need to handle sra in
MaskedValueIsZero, AFAIK.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23703 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-12 20:40:40 +00:00
Jim Laskey
fab66f6900 Finally committing to the new scheduler. Still -sched=none by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23702 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-12 18:29:35 +00:00
Jim Laskey
851a22db2b Added graphviz/gv support for MF. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23700 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-12 12:09:05 +00:00
Chris Lattner
d6155e96f7 Fix (hopefully the last) issue where LSR is nondeterminstic. When pulling 
out CSE's of base expressions it could build a result whose order was
nondet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23698 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-11 18:41:04 +00:00
Chris Lattner
7b445c521b Fix another problem where LSR was being nondeterminstic. Also remove elements 
from the end of a vector instead of the beginning


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23697 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-11 18:30:57 +00:00
Chris Lattner
b4dd1b86fa Fix another lsr-is-nondeterministic case 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23695 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-11 18:17:57 +00:00
Chris Lattner
a179ab3016 Fix a powerpc crash on CodeGen/Generic/llvm-ct-intrinsics.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23694 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-11 17:56:34 +00:00
Chris Lattner
05b57433e6 Add a canonicalization that got lost, fixing PowerPC/fold-li.ll:SUB 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23693 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-11 06:07:15 +00:00
Chris Lattner
04ecf6d65f clean up some corner cases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23692 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 23:00:08 +00:00
Chris Lattner
87514ca04c Implement trivial DSE. If two stores are neighbors and store to the same 
location, replace them with a new store of the last value.  This occurs
in the same neighborhood in 197.parser, speeding it up about 1.5%


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23691 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 22:31:19 +00:00
Chris Lattner
01a2202138 Add support for CombineTo, allowing the dag combiner to replace nodes with 
multiple results.

Use this support to implement trivial store->load forwarding, implementing
CodeGen/PowerPC/store-load-fwd.ll.  Though this is the most simple case and
can be extended in the future, it is still useful.  For example, it speeds
up 197.parser by 6.2% by avoiding an LSU reject in xalloc:

        stw r6, lo16(l5_end_of_array)(r2)
        addi r2, r5, -4
        stwx r5, r4, r2
-       lwzx r5, r4, r2
-       rlwinm r5, r5, 0, 0, 30
        stwx r5, r4, r2
        lwz r2, -4(r4)
        ori r2, r2, 1


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23690 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 22:04:48 +00:00
Nate Begeman
07ed417df2 Teach the DAGCombiner several new tricks, teaching it how to turn 
sext_inreg into zext_inreg based on the signbit (fires a lot), srem into
urem, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23688 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 21:26:48 +00:00
Chris Lattner
d739075cbb Fix comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23686 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 16:52:03 +00:00
Chris Lattner
bba9aa3475 Add ISD::ADD to MaskedValueIsZero 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23685 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 16:51:40 +00:00
Chris Lattner
3892560680 This function is now dead 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23684 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 16:49:22 +00:00
Chris Lattner
af21d55aee Enable Nate's excellent DAG combiner work by default. This allows the 
removal of a bunch of ad-hoc and crufty code from SelectionDAG.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23682 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 16:47:10 +00:00
Chris Lattner
7b1fe15de0 These definitions have been moved to common code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23681 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 06:01:00 +00:00
Chris Lattner
17f2cf05b3 Pull DAG ISel generation nodes out of the PowerPC backend to where they 
can be used by other targets.  For those targets that want to use it,
have at.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23680 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 06:00:30 +00:00
Chris Lattner
a19cea061e add a todo for something I noticed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23679 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 22:59:08 +00:00
Chris Lattner
ee899e6bfc (X & Y) & C == 0 if either X&C or Y&C are zero 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23678 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 22:12:36 +00:00
Chris Lattner
5fb0deb43a Make MaskedValueIsZero a bit more aggressive 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23677 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 22:08:50 +00:00
Andrew Lenharth
fa08fb2c78 This seems useful from the original patch that added the function. If there is a reason it is not useful on a RISC type target, let me know and I will pull it out 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23676 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 20:11:35 +00:00
Chris Lattner
60de63d0b6 Fix funky xcode indentation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23674 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 06:36:35 +00:00
Chris Lattner
a18af06360 Hrm, you didn't see this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23673 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 06:24:02 +00:00
Chris Lattner
7305ae28df Fix a source of non-determinism in the backend: the order of processing 
IV strides dependend on the pointer order of the strides in memory.
Non-determinism is bad.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23672 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 06:20:55 +00:00
Chris Lattner
089c25ccb3 When emiting a CopyFromReg and the source is already a vreg, do not bother 
creating a new vreg and inserting a copy: just use the input vreg directly.

This speeds up the compile (e.g. about 5% on mesa with a debug build of llc)
by not adding a bunch of copies and vregs to be coallesced away.  On mesa,
for example, this reduces the number of intervals from 168601 to 129040
going into the coallescer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23671 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 05:58:56 +00:00
Chris Lattner
65a419a104 Disable formation of rlwinm instructions from SRA bases. This fixes 
the 177.mesa failure from last night, and fixes the
CodeGen/PowerPC/2005-10-08-ArithmeticRotate.ll regression test I added.
If this code cannot be fixed, it should be removed for good, but I'll leave
it to Nate to decide its fate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23670 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-09 05:36:17 +00:00
Nate Begeman
7d47a61496 Remove another unused file. Preparing for the great "enable i64 on ppc32" 
merge, and using subtarget info for ptr size.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23668 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-08 01:32:34 +00:00
Nate Begeman
02f77d1e83 Remove a file that is no longer used 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23666 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-08 01:21:27 +00:00
Nate Begeman
f845b4563a Lo and behold, the last bits of SelectionDAG.cpp have been moved over. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23665 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-08 00:29:44 +00:00
Chris Lattner
cf01a70550 When preselecting, favor things that have low depth to select first. This 
is faster and uses less stack space.  This reduces our stack requirement
enough to compile sixtrack, and though it's a hack, should be enough until
we switch to iterative isel


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23664 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 22:10:27 +00:00
Chris Lattner
9a9719eea1 remove debugging code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23663 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 15:31:26 +00:00
Chris Lattner
c4ced268d8 implement CodeGen/PowerPC/div-2.ll:test2-4 by propagating zero bits through 
C-X's


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23662 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 15:30:32 +00:00
Chris Lattner
6c4dad0b8b fix indentation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23660 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 06:37:02 +00:00
Chris Lattner
094c8fcd14 Turn sdivs into udivs when we can prove the sign bits are clear. This 
implements CodeGen/PowerPC/div-2.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23659 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 06:10:46 +00:00
Jeff Cohen
68d98e0bdc Remove useless variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23656 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 05:28:29 +00:00
Chris Lattner
71abaab1d2 add a hack to work around broken VC++ scoping rules. Thx to JeffC for pointing 
this out to me


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23655 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 05:23:36 +00:00
Chris Lattner
eb5d47d99d Fix a CQ regression from my patch to split F32/F64 into seperate register 
classes on PPC.  We were emitting fmr instructions to do fp extensions, which
weren't getting coallesced.  This fixes Regression/CodeGen/PowerPC/fpcopy.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23654 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 05:00:52 +00:00
Chris Lattner
7a7c979ddd Fix CodeGen/Generic/bool-to-double.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23652 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-07 04:50:48 +00:00
Chris Lattner
6a16f6a14f Pull out Call, reducing stack frame size from 6032 bytes to 5184 bytes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23650 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 19:07:45 +00:00
Chris Lattner
222adac30a Pull out setcc, this reduces stack frame size from 7520 to 6032 bytes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23649 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 19:03:35 +00:00
Chris Lattner
2b63e4c5e2 Pull two more methods out, reducing stack frame size from 8224 -> 7520 bytes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23648 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 18:56:10 +00:00
Chris Lattner
bd937b98f4 Add a recursive-iterative hybrid stage to attempt to reduce stack space, this 
helps but not enough.

Start pulling cases out of PPC32DAGToDAGISel::Select.  With GCC 4, this function
required 8512 bytes of stack space for each invocation (GCC 3 required less
than 700 bytes).  Pulling this first function out gets us down to 8224.  More
to come :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23647 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 18:45:51 +00:00
Chris Lattner
cf5c79b34f silence a bogus GCC warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23646 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 17:39:10 +00:00
Chris Lattner
8a61a7524a Fix the LLC regressions on X86 last night. In particular, when undoing 
previous copy elisions and we discover we need to reload a register, make
sure to use the regclass of the original register for the reload, not the
class of the current register.  This avoid using 16-bit loads to reload 32-bit
values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23645 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 17:19:06 +00:00
Andrew Lenharth
f3fb71bfd7 This is suppose to work now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23644 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 16:54:29 +00:00
Andrew Lenharth
d5613debf9 remove VAX compatibility instruction, we will never use this 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23643 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 16:53:32 +00:00
Chris Lattner
32fca00a23 Make the legalizer completely non-recursive 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23642 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-06 01:20:27 +00:00
Nate Begeman
0558f61b0c Let the combiner handle more cases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23641 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 21:44:43 +00:00
Nate Begeman
829cb81806 Remove some bad code from Legalize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23640 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 21:44:10 +00:00
Nate Begeman
e17daebb30 Check in some more DAGCombiner pieces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23639 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 21:43:42 +00:00
Chris Lattner
22480c4350 Fix a bug in the local spiller, where we could take code like this: 
store r12 -> [ss#2]
  R3 = load [ss#1]
  use R3
  R3 = load [ss#2]
  R4 = load [ss#1]

and turn it into this code:

  store R12 -> [ss#2]
  R3 = load [ss#1]
  use R3
  R3 = R12
  R4 = R3    <- oops!

The problem was that promoting R3 = load[ss#2] to a copy missed the fact that
the instruction invalidated R3 at that point.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23638 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 18:30:19 +00:00
Chris Lattner
f5c6e6b745 silence some warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23637 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 17:15:09 +00:00
Chris Lattner
3ea0b47f81 implement visitBR_CC so that PowerPC/inverted-bool-compares.ll passes 
with the dag combiner.  This speeds up espresso by 8%, reaching performance
parity with the dag-combiner-disabled llc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23636 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 06:47:48 +00:00
Chris Lattner
ad13715ed4 fix some pastos 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23635 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 06:37:22 +00:00
Chris Lattner
9503859c54 Add a new HandleNode class, which is used to handle (haha) cases in the 
dead node elim and dag combiner passes where the root is potentially updated.
This fixes a fixme in the dag combiner.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23634 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 06:35:28 +00:00
Chris Lattner
5c46f74ec7 Implement the code for PowerPC/inverted-bool-compares.ll, even though it 
that testcase still does not pass with the dag combiner.  This is because
not all forms of br* are folded yet.

Also, when we combine a node into another one, delete the node immediately
instead of waiting for the node to potentially come up in the future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23632 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 06:11:08 +00:00
Chris Lattner
d48050aa15 make sure that -view-isel-dags is the input to the isel, not the input to 
the second phase of dag combining


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23631 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 06:09:10 +00:00
Chris Lattner
91559026d3 Fix a crash compiling Olden/tsp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23630 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 04:45:43 +00:00
Chris Lattner
a1e3f54396 refactor a bit of code. 
When moving constant entries in 'Map' if the entry is the representative
constant for the abstractypemap, make sure to update it as well.  This
fixes the bcreader failures from last night on several C++ apps.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23628 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 21:35:50 +00:00
Chris Lattner
23ec01fcc3 Minor speedup to avoid array searches given a Use*. This speeds up bc reading 
of the python test from 1:00 to 54s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23627 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 18:47:09 +00:00
Chris Lattner
d0ff1adbdb Change the signature of replaceUsesOfWithOnConstant. The bool was always 
true dynamically.  Finally, pass the Use* that replaceAllUsesWith has into
the method for future use.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23626 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 18:13:04 +00:00
Chris Lattner
a55b30a225 For large constants (e.g. arrays and structs with many elements) just 
creating the keys and doing comparisons to index into 'Map' takes a lot
of time.  For these large constants, keep an inverse map so that 'remove'
and move operations are much faster.

This speeds up a release build of the bc reader on Eric's nasty python
bytecode file from 1:39 to 1:00s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23624 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 17:48:46 +00:00
Chris Lattner
d7a3fc6819 minor cleanup/fastpath for the bcreader. This speeds up the bcreader 
from 1:41 -> 1:39 on the large python .bc file in a release build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23623 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 16:52:46 +00:00
Jim Laskey
9d528dc2b4 Reverting to version - until problem isolated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23622 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 16:41:51 +00:00
Chris Lattner
ccc8ed7bb5 Add a forward def 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23621 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 05:09:20 +00:00
Nate Begeman
1aa1972c63 Fix some faulty logic in the libcall inserter. 
Since calls return more than one value, don't bail if one of their uses
happens to be a node that's not an MVT::Other when following the chain
from CALLSEQ_START to CALLSEQ_END.

Once we've found a CALLSEQ_START, we can just return; there's no need to
tail-recurse further up the graph.

Most importantly, just because something only has one use doesn't mean we
should use it's one use to follow from start to end.  This faulty logic
caused us to follow a chain of one-use FP operations back to a much earlier
call, putting a cycle in the graph from a later start to an earlier end.

This is a better fix that reverting to the workaround committed earlier
today.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23620 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 02:10:55 +00:00
Chris Lattner
c182a88aec implement the struct version of the array speedup, speeding up the 
testcase a bit more from 1:48 -> 1.40.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23619 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 01:17:50 +00:00
Chris Lattner
ab55698349 Fix DemoteRegToStack on an invoke. This fixes PR634. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23618 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 00:44:01 +00:00
Nate Begeman
27d404ccd1 Add back a workaround that fixes some breakages from chris's last change. 
Neither of us have yet figured out why this code is necessary, but stuff
breaks if its not there.  Still tracking this down...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23617 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-04 00:37:37 +00:00
Chris Lattner
7a66e686fe Clean up the code a bit. Use isInstructionTriviallyDead to be more aggressive 
and more correct than use_empty().  This fixes PR635 and
SimplifyCFG/2005-10-02-InvokeSimplify.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23616 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 23:43:43 +00:00
Chris Lattner
cea141f1d1 Change ConstantArray::replaceUsesOfWithOnConstant to attempt to update 
constant arrays in place instead of reallocating them and replaceAllUsesOf'ing
the result.  This speeds up a release build of the bcreader from:

136.987u 120.866s 4:24.38
to
49.790u 49.890s 1:40.14

... a 2.6x speedup parsing a large python bc file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23614 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 22:51:37 +00:00
Chris Lattner
5cbade9f83 move some methods, no other changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23613 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 21:58:36 +00:00
Chris Lattner
dfdd6c5d7a minor microoptimizations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23612 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 21:56:24 +00:00
Chris Lattner
eebac5fee6 Use a map to cache the ModuleType information, so we can do logarithmic 
lookups instead of linear time lookups.  This speeds up bc parsing of a
large file from

137.834u 118.256s 4:27.96
to
132.611u 114.436s 4:08.53

with a release build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23611 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 21:26:53 +00:00
Jim Laskey
8ba732bb1c Refactor gathering node info and emission. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23610 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 12:30:32 +00:00
Chris Lattner
6db0756f02 clean up this code a bit, no functionality change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23609 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 07:22:07 +00:00
Chris Lattner
8ca02914e5 Speed up the asm printer a lot by not printing formatted LLVM asm output 
for globals


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23608 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 07:08:36 +00:00
Chris Lattner
53a79aaae9 Break the body of the loop out into a new method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23606 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 04:47:08 +00:00
Chris Lattner
5e8ca66914 Make IVUseShouldUsePostIncValue more aggressive when the use is a PHI. In 
particular, it should realize that phi's use their values in the pred block
not the phi block itself.  This change turns our em3d loop from this:

_test:
        cmpwi cr0, r4, 0
        bgt cr0, LBB_test_2     ; entry.no_exit_crit_edge
LBB_test_1:     ; entry.loopexit_crit_edge
        li r2, 0
        b LBB_test_6    ; loopexit
LBB_test_2:     ; entry.no_exit_crit_edge
        li r6, 0
LBB_test_3:     ; no_exit
        or r2, r6, r6
        lwz r6, 0(r3)
        cmpw cr0, r6, r5
        beq cr0, LBB_test_6     ; loopexit
LBB_test_4:     ; endif
        addi r3, r3, 4
        addi r6, r2, 1
        cmpw cr0, r6, r4
        blt cr0, LBB_test_3     ; no_exit
LBB_test_5:     ; endif.loopexit.loopexit_crit_edge
        addi r3, r2, 1
        blr
LBB_test_6:     ; loopexit
        or r3, r2, r2
        blr

into:

_test:
        cmpwi cr0, r4, 0
        bgt cr0, LBB_test_2     ; entry.no_exit_crit_edge
LBB_test_1:     ; entry.loopexit_crit_edge
        li r2, 0
        b LBB_test_5    ; loopexit
LBB_test_2:     ; entry.no_exit_crit_edge
        li r6, 0
LBB_test_3:     ; no_exit
        lwz r2, 0(r3)
        cmpw cr0, r2, r5
        or r2, r6, r6
        beq cr0, LBB_test_5     ; loopexit
LBB_test_4:     ; endif
        addi r3, r3, 4
        addi r6, r6, 1
        cmpw cr0, r6, r4
        or r2, r6, r6
        blt cr0, LBB_test_3     ; no_exit
LBB_test_5:     ; loopexit
        or r3, r2, r2
        blr


Unfortunately, this is actually worse code, because the register coallescer
is getting confused somehow.  If it were doing its job right, it could turn the
code into this:

_test:
        cmpwi cr0, r4, 0
        bgt cr0, LBB_test_2     ; entry.no_exit_crit_edge
LBB_test_1:     ; entry.loopexit_crit_edge
        li r6, 0
        b LBB_test_5    ; loopexit
LBB_test_2:     ; entry.no_exit_crit_edge
        li r6, 0
LBB_test_3:     ; no_exit
        lwz r2, 0(r3)
        cmpw cr0, r2, r5
        beq cr0, LBB_test_5     ; loopexit
LBB_test_4:     ; endif
        addi r3, r3, 4
        addi r6, r6, 1
        cmpw cr0, r6, r4
        blt cr0, LBB_test_3     ; no_exit
LBB_test_5:     ; loopexit
        or r3, r6, r6
        blr

... which I'll work on next. :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23604 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 02:50:05 +00:00
Chris Lattner
0ae33eb243 Refactor some code into a function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23603 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 01:04:44 +00:00
Chris Lattner
1902ff4d82 This break is bogus and I have no idea why it was there. Basically it prevents 
memoizing code when IV's are used by phinodes outside of loops.  In a simple
example, we were getting this code before (note that r6 and r7 are isomorphic
IV's):

        li r6, 0
        or r7, r6, r6
LBB_test_3:     ; no_exit
        lwz r2, 0(r3)
        cmpw cr0, r2, r5
        or r2, r7, r7
        beq cr0, LBB_test_5     ; loopexit
LBB_test_4:     ; endif
        addi r2, r7, 1
        addi r7, r7, 1
        addi r3, r3, 4
        addi r6, r6, 1
        cmpw cr0, r6, r4
        blt cr0, LBB_test_3     ; no_exit

Now we get:

        li r6, 0
LBB_test_3:     ; no_exit
        or r2, r6, r6
        lwz r6, 0(r3)
        cmpw cr0, r6, r5
        beq cr0, LBB_test_6     ; loopexit
LBB_test_4:     ; endif
        addi r3, r3, 4
        addi r6, r2, 1
        cmpw cr0, r6, r4
        blt cr0, LBB_test_3     ; no_exit

this was noticed in em3d.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23602 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 00:37:33 +00:00
Chris Lattner
37edbf0b21 when checking if we should move a split edge block outside of a loop, 
check the presplit pred, not the post-split pred.  This was causing us
to make the wrong decision in some cases, leaving the critical edge block
in the loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23601 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-03 00:31:52 +00:00
Chris Lattner
ab510a76d6 Fix a problem where the legalizer would run out of stack space on extremely 
large basic blocks because it was purely recursive.  This switches it to an
iterative/recursive hybrid.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23596 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 17:49:46 +00:00
Chris Lattner
dcd5abc70c silence a bogus warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23595 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 16:30:51 +00:00
Chris Lattner
3cf8760dc5 silence some warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23594 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 16:29:36 +00:00
Chris Lattner
123557fcf0 silence a warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23593 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 16:27:59 +00:00
Chris Lattner
dff06f4348 add patterns for float binops and fma ops 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23592 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 07:46:28 +00:00
Chris Lattner
080a4b1637 Sort the cpu and features table, so that the alpha backend doesn't fail EVERY 
compile with an assertion that the tables are not sorted!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23591 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 07:13:52 +00:00
Chris Lattner
a3638c0f1f Add assertions to the trivial scheduler to check that the value types match 
up between defs and uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23590 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 07:10:55 +00:00
Chris Lattner
43f07a4bbc another solution to the fsel issue. Instead of having 4 variants, just force 
the comparison to be 64-bits.  This is fine because extensions from float
to double are free.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23589 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 07:07:49 +00:00
Chris Lattner
867940d1b7 fsel can take a different FP type for the comparison and for the result. As such 
split the FSEL family into 4 things instead of just two.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23588 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 06:58:23 +00:00
Chris Lattner
7c0d664c21 fix an f32/f64 type mismatch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23587 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 06:37:13 +00:00
Chris Lattner
14765be0bc Codegen CopyFromReg using the regclass that matches the valuetype of the 
destination vreg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23586 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 06:34:16 +00:00
Chris Lattner
a916dd8888 Adjust to change in ctor 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23585 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-02 06:23:51 +00:00
Chris Lattner
ca0a4778a8 Minor tweak to the branch selector. When emitting a two-way branch, and if 
we're in a single-mbb loop, make sure to emit the backwards branch as the
conditional branch instead of the uncond branch.  For example, emit this:

LBBl29_z__44:
        stw r9, 0(r15)
        stw r9, 4(r15)
        stw r9, 8(r15)
        stw r9, 12(r15)
        addi r15, r15, 16
        addi r8, r8, 1
        cmpw cr0, r8, r28
        ble cr0, LBBl29_z__44
        b LBBl29_z__48                   *** NOT PART OF LOOP

Instead of:

LBBl29_z__44:
        stw r9, 0(r15)
        stw r9, 4(r15)
        stw r9, 8(r15)
        stw r9, 12(r15)
        addi r15, r15, 16
        addi r8, r8, 1
        cmpw cr0, r8, r28
        bgt cr0, LBBl29_z__48            *** PART OF LOOP!
        b LBBl29_z__44

The former sequence has one fewer dispatch group for the loop body.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23582 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 23:06:26 +00:00
Chris Lattner
b91956e7f8 like the comment says, enable this 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23581 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 23:02:40 +00:00
Chris Lattner
505277a7f5 Add some very paranoid checking for operand/result reg class matchup 
For instructions that define multiple results, use the right regclass
to define the result, not always the rc of result #0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23580 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 07:45:09 +00:00
Jeff Cohen
2aeaf4e839 Fix VC++ warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23579 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 03:57:14 +00:00
Chris Lattner
2c1760f636 fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23578 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 02:51:36 +00:00
Chris Lattner
919c032fa4 Modify the ppc backend to use two register classes for FP: F8RC and F4RC. 
These are used to represent float and double values, and the two regclasses
contain the same physical registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23577 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 01:35:02 +00:00
Chris Lattner
37345fe3cd add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23575 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 00:17:07 +00:00
Jim Laskey
22f6212e9f typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23574 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 00:08:23 +00:00
Jim Laskey
41755e2c7e 1. Simplify the gathering of node groups. 
2. Printing node groups when displaying nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23573 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 00:03:07 +00:00
Jim Laskey
242f2557cc Should be using flag and not chain. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23572 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 23:43:37 +00:00
Nate Begeman
2b5e66fc6e Remove some now-dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23571 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 21:28:27 +00:00
Andrew Lenharth
ac35cd207f subtarget support for CIX and FIX extentions (the only 2 I care about right now) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23569 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 20:24:38 +00:00
Jim Laskey
b6d4c2cf2d 1. Made things node-centric (from operand). 
2. Added node groups to handle flagged nodes.

3. Started weaning simple scheduling off existing emitter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23566 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 19:15:27 +00:00
Chris Lattner
0f21fd5204 Rename MRegisterDesc -> TargetRegisterDesc for consistency 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23564 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 17:49:27 +00:00
Chris Lattner
863914feb5 trim down the target info structs now that we have a preferred spill register class for each callee save register 
Why is V9 maintaining these tables manually? ugh!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23561 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 17:38:36 +00:00
Chris Lattner
8fb040e584 now that we have a reg class to spill with, get this info from the regclass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23559 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 17:19:22 +00:00
Chris Lattner
5802be13e0 constant fold these calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23558 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 17:16:59 +00:00
Chris Lattner
56bcae0de9 simplify this code using the new regclass info passed in 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23557 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 17:12:38 +00:00
Chris Lattner
80a4f169b4 Now that we have getCalleeSaveRegClasses() info, use it to pass the register 
class into the spill/reload methods.  Targets can now rely on that argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23556 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 16:59:07 +00:00
Chris Lattner
e4047188e7 stub out a virtual method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23554 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 06:55:18 +00:00
Chris Lattner
d174fe0ec3 CR registers are not used by this "target" 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23552 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 06:43:58 +00:00
Chris Lattner
0a37960d32 these registers don't belong to any register classes, so don't mark them 
as callee save.  They can never be generated by the compiler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23551 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 06:42:24 +00:00
Chris Lattner
ef242b1ccc Now that self referential classes are supported, get rid of a work-around. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23544 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 04:13:23 +00:00
Chris Lattner
b48d2cf5eb pass extra args 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23539 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 01:31:52 +00:00
Chris Lattner
0ffb1a56ff these methods get extra args 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23538 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 01:30:55 +00:00
Chris Lattner
97d5e6461a Pass extra regclasses into spilling code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23537 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 01:29:42 +00:00
Chris Lattner
bf9716b9c4 Change this code ot pass register classes into the stack slot spiller/reloader 
code.  PrologEpilogInserter hasn't been updated yet though, so targets cannot
use this info.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23536 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 01:29:00 +00:00
Chris Lattner
ff201eebea Use the 32-bit version for now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23534 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 00:05:05 +00:00
Chris Lattner
67ab118a6d Add a bunch of patterns for F64 FP ops, add some more integer ops 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23533 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 23:34:24 +00:00
Chris Lattner
237733e933 Remove code for patterns that are autogenerated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23532 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 23:33:31 +00:00
Andrew Lenharth
120ab480ab begining alpha subtarget support 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23531 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 22:54:56 +00:00
Chris Lattner
c7a37a52cd tblgen autogens this pattern now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23530 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 22:37:24 +00:00
Andrew Lenharth
68fd4866de copy and paste error 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23528 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 21:11:57 +00:00
Chris Lattner
221e53caea now that tblgen is smarter, this pattern is not needed. Also, tblgen 
now inverts commuted versions of ANDC/ORC with the current .td file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23527 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 19:29:15 +00:00
Chris Lattner
93e50ce04c Insert stores after phi nodes in the normal dest. This fixes 
LowerInvoke/2005-08-03-InvokeWithPHI.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23525 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 17:44:20 +00:00
Chris Lattner
52897f827e consistency with other cases, no functionality change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23524 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 17:38:52 +00:00
Chris Lattner
f13befb456 Make the JIT default to the DAG isel instead of the pattern isel, like LLC. 
The Pattern isel has some strange memory corruption issues going on. :(

This should have been converted over anyway, but it got forgotten somehow
when switching to the dag isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23523 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 17:31:03 +00:00
Chris Lattner
473a99073c Fix two bugs in my patch earlier today that broke int->fp conversion on X86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23522 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 06:44:39 +00:00
Chris Lattner
a48bc53cad Fold isascii into a simple comparison. This speeds up 197.parser by 7.4%, 
bringing the LLC time down to the CBE time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23521 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 06:17:27 +00:00
Chris Lattner
e9b6242780 remove a bunch of unneeded stuff, or self evident comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23519 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 06:16:11 +00:00
Chris Lattner
c330069e20 Implement a couple of memcmp folds from the todo list 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23517 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 04:54:20 +00:00
Jeff Cohen
fef80f43e0 Silence VC++ redeclaration warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23516 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 01:59:49 +00:00
Chris Lattner
d3d2cf52bb Never rely on ReplaceAllUsesWith when selecting, use CodeGenMap instead. 
ReplaceAllUsesWith does not replace scalars SDOperand floating around on
the stack, permitting things to be selected multiple times.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23515 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-29 00:59:32 +00:00
Chris Lattner
79d0e9f3d1 Codegen ADD X, IMM -> addis/addi if needed. 
This implements PowerPC/fold-li.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23514 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 23:07:13 +00:00
Chris Lattner
d8ead9e250 Autogen MUL, move FP cases together 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23512 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:53:16 +00:00
Chris Lattner
88add100b3 disentangle FP from INT versions of div/mul 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23511 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:50:24 +00:00
Chris Lattner
4a7de219b4 Use the autogenerated matcher for ADD/SUB 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23510 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:47:28 +00:00
Chris Lattner
e025574370 add a patter for SUBFIC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23509 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:47:06 +00:00
Chris Lattner
0648ccf1e9 Mark int binops as int-only, add FP binops. Mark FADD/FMUL as commutative but 
not associative.  Add [SU]REM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23508 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:38:27 +00:00
Chris Lattner
bed21de39b wrap a long line 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23507 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:30:58 +00:00
Chris Lattner
615c2d0920 Add FP versions of the binary operators, keeping the int and fp worlds seperate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23506 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:29:58 +00:00
Chris Lattner
3e2bafd640 Add FP versions of the binary operators, keeping the int and fp worlds seperate. 
Though I have done extensive testing, it is possible that this will break
things in configs I can't test.  Please let me know if this causes a problem
and I'll fix it ASAP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23505 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:29:17 +00:00
Chris Lattner
01b3d73c20 Add FP versions of the binary operators, keeping the int and fp worlds seperate. 
Though I have done extensive testing, it is possible that this will break
things in configs I can't test.  Please let me know if this causes a problem
and I'll fix it ASAP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23504 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:28:18 +00:00
Chris Lattner
a5cac6f6eb Mark associative nodes as associative 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23503 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 20:58:39 +00:00
Chris Lattner
645992f595 Nate pointed out that mulh[us] are commutative as well. Thanks! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23500 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 19:01:44 +00:00
Chris Lattner
6bcf1b7eed expose commutativity information 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23498 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 18:27:58 +00:00
Chris Lattner
393e138f60 All (xor *) cases are autogenerated now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23497 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 18:12:37 +00:00
Chris Lattner
cfc828a3d0 add support for missed eqv tests 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23496 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 18:10:51 +00:00
Chris Lattner
1bd8b7b06e Implement PowerPC/eqv-andc-orc-nor.ll:EQV3 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23494 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 18:04:52 +00:00
Chris Lattner
91da8623be learn to codegen not as NOR instead of xoris/xori 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23490 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 17:13:15 +00:00
Chris Lattner
d135fa4fd6 These nodes are all autogenerated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23489 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 17:07:09 +00:00
Chris Lattner
32643d8e05 Constant fold llvm.sqrt 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23487 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 01:34:32 +00:00
Chris Lattner
5b3c70263b add a note about a way to improve this code further, that I won't be getting 
to right now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23485 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 22:44:59 +00:00
Chris Lattner
9a5582f251 Fix a regression in my previous patch, fixing GlobalOpt/2005-09-27-Crash.ll 
and PR632.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23484 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 22:28:11 +00:00
Chris Lattner
d145a61f8f Darwin, like many BSD systems, has a setjmp/longjmp which saves the signal mask 
on setjmp calls and restores it on longjmp calls (both of which require syscalls).

This makes the calls REALLY slow.  Use _setjmp/_longjmp instead.  This speeds up
hexxagon from 120.31s to 15.68s: from 5.53x slower than GCC to 28% faster than GCC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23482 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 22:18:25 +00:00
Chris Lattner
6c38b33613 If the target prefers it, use _setjmp/_longjmp should be used instead of setjmp/longjmp for llvm.setjmp/llvm.longjmp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23481 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 22:15:53 +00:00
Chris Lattner
8e6be8b921 initialize new flag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23480 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 22:13:56 +00:00
Chris Lattner
4531371960 Avoid spilling stack slots... to stack slots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23478 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 21:33:12 +00:00
Chris Lattner
f4e6c3a69b Completely rewrite 'correct' eh support. This changes how setjmp insertion 
is performed so it is only at most once per function that contains an invoke
instead of once per invoke in the function.  This patch has the following perks:

1. It fixes PR631, which complains about slowness.
2. If fixes PR240, which complains about non-volatile vars being live across
   setjmp/longjmps.
3. It improves (but does not fix) the jmpbuf alignment issue on itanium by not
   forcing the jmpbufs to always be 8-bytes off the alignment of the structure.
4. It speeds up 253.perlbmk from 338s to 13.70s (a 25x improvement!), making us
   now about 4% faster than GCC.

Further improvements are also possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23477 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 21:18:17 +00:00
Chris Lattner
fe15830f96 Make the pass name simpler 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23476 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 21:10:32 +00:00
Chris Lattner
b94388a76a fix CBackend/2005-09-27-VolatileFuncPtr.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23475 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 20:52:44 +00:00
Chris Lattner
6d7277b3b4 allow demotion to volatile values, add support for invoke 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23473 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 19:39:00 +00:00
Chris Lattner
333bd835bd Make sure to clear the CodeGenMap after each basic block is selected to avoid 
cross MBB pollution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23470 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 17:45:33 +00:00
Jim Laskey
5324fec644 Remove some redundancies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23469 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 17:32:45 +00:00
Chris Lattner
df0ef1d0fe Split SimpleConstantVal up into its components, so each Constant subclass getsa different enum value. This allows 'classof' for these to be really simple,not needing to call getType() anymore. 
This speeds up isa/dyncast/etc for constants, and also makes them smaller.
For example, the text section of a release build of InstCombine.cpp shrinks
from 230037 bytes to 216363 bytes, a 6% reduction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23467 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 06:09:08 +00:00
Chris Lattner
a9ec8ab32b Add support for external calls that we know how to constant fold. This implements 
ctor-list-opt.ll:CTOR8


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23465 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 05:02:43 +00:00
Chris Lattner
231308c545 Fix a bug where we would evaluate stores into linkonce objects which could be 
potentially replaced at link-time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23463 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 04:50:03 +00:00
Chris Lattner
cd27142cc8 Implement support for static constructors with calls in them. This is useful 
because gccas runs globalopt before inlining.

This implements ctor-list-opt.ll:CTOR7


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23462 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 04:45:34 +00:00
Chris Lattner
8a7cc6e71c Refactor this code a bit, no functionality changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23460 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 04:27:01 +00:00
Chris Lattner
5e8d2dc197 Move the post-lsr simplify cfg pass after lowereh, so it can clean up after 
eh lowering as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23459 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 00:14:41 +00:00
Chris Lattner
30e21a46f0 minor pattern shuffling 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23458 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 22:20:16 +00:00
Jim Laskey
e6b90fba4a Addition of a simple two pass scheduler. This version is currently hacked up 
for testing and will require target machine info to do a proper scheduling.
The simple scheduler can be turned on using -sched=simple (defaults
to -sched=none)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23455 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 21:57:04 +00:00
Chris Lattner
ff0c1ef9eb Remove some dead code. ctor evaluation subsumes empty ctor elim 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23453 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 20:38:20 +00:00
Chris Lattner
a22fdb0a37 Add support for alloca, implementing ctor-list-opt.ll:CTOR6 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23452 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 17:07:09 +00:00
Chris Lattner
aae4a1cd3f Add a debug printout, fix a crash on kc++ 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23450 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 07:34:35 +00:00
Chris Lattner
798b4d5bb3 Implement loads/stores through GEP's of globals. This implements 
ctor-list-opt.ll:CTOR5.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23449 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 06:52:44 +00:00
Chris Lattner
0b142e3920 Replace TraverseGEPInitializer with ConstantFoldLoadThroughGEPConstantExpr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23447 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:34:07 +00:00
Chris Lattner
ebe61201d1 Eliminate GetGEPGlobalInitializer in favor of the more powerful 
ConstantFoldLoadThroughGEPConstantExpr function in the utils lib.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23446 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:28:52 +00:00
Chris Lattner
363f2a26d5 Factor the GetGEPGlobalInitializer out of this pass and into Transforms/Utils 
as ConstantFoldLoadThroughGEPConstantExpr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23445 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:28:06 +00:00
Chris Lattner
c5f52e6da1 Move the ConstantFoldLoadThroughGEPConstantExpr function out of the InstCombine 
pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23444 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:27:10 +00:00
Chris Lattner
562a055ca7 add a comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23442 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:16:34 +00:00
Chris Lattner
04de1cfb2b Add support for getelementptr, load, and correctly reject volatile stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23441 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 05:15:37 +00:00
Chris Lattner
cdf98bed96 Add support for br/brcond/switch and phi 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23439 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 04:57:38 +00:00
Chris Lattner
79c1101947 Add a simple interpreter to this code, allowing us to statically evaluate 
global ctors that are simple enough.  This implements ctor-list-opt.ll:CTOR2.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23437 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 04:44:35 +00:00
Chris Lattner
db973e60ce factor some code into a InstallGlobalCtors method, add comments. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23435 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 02:31:18 +00:00
Chris Lattner
7d8e58f384 Make the global opt optimizer work on modules with a null terminator, by 
accepting the null even with a non-65535 init prio


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23434 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 02:19:27 +00:00
Chris Lattner
b1ab458047 Factor this code out into a few methods. 
Implement the start of global ctor optimization.  It is currently smart
enough to remove the global ctor for cases like this:

struct foo {
  foo() {}
} x;

... saving a bit of startup time for the program.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23433 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-26 01:43:45 +00:00
Chris Lattner
aebac50e77 Fix some logic I broke that caused a regression on 
SimplifyLibCalls/2005-05-20-sprintf-crash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23430 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-25 07:06:48 +00:00
Chris Lattner
5931c54e85 Move MaskedValueIsZero up. 
Match a bunch of idioms for sign extensions, implementing InstCombine/signext.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23428 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 23:43:33 +00:00
Chris Lattner
5d735bf29b Simplify this code a bit by relying on recursive simplification. Support 
sprintf("%s", P)'s that have uses.

s/hasNUses(0)/use_empty()/


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23425 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 22:17:06 +00:00
Chris Lattner
5b845c9443 Add support for a marker byte that indicates that we shouldn't add the user 
prefix to a symbol name


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23421 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 08:24:28 +00:00
Chris Lattner
ea874f3306 Teach the dag isel generator how to construct arbitrary immediates. The 
generated isel now tries li then lis, then lis+ori.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23418 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-24 00:41:58 +00:00
Chris Lattner
b60e0815df remove some debugging code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23411 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-23 18:49:09 +00:00
Chris Lattner
263d1e469d Fold two consequtive branches that share a common destination between them. 
This implements SimplifyCFG/branch-fold.ll, and is useful on ?:/min/max heavy
code


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23410 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-23 18:47:20 +00:00
Chris Lattner
055dc102e9 simplify some logic further 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23408 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-23 07:23:18 +00:00
Chris Lattner
f58c1a578e pull a bunch of logic out of SimplifyCFG into a helper fn 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23407 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-23 06:39:30 +00:00
Chris Lattner
7c439929bc speed up Archive::isBytecodeArchive in the case when the archive doesn't have 
an llvm-ranlib symtab.  This speeds up gccld -native on an almost empty .o file
from 1.63s to 0.18s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23406 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-23 06:22:58 +00:00
Chris Lattner
5ae7911b24 Turn (X^C1) == C2 into X == C1^C2 iff X&~C1 = 0 (and move a function) 
This happens all the time on PPC for bool values, e.g. eliminating a xori
in inverted-bool-compares.ll.

This should be added to the dag combiner as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23403 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-23 00:55:52 +00:00
Chris Lattner
3c3fe462f7 Expose the LiveInterval interfaces as public headers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23400 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-21 04:19:09 +00:00
Chris Lattner
e9487f0dc8 Start threading across blocks with code in them, so long as the code does 
not define a value that is used outside of it's block.  This catches many
more simplifications, e.g. 854 in 176.gcc, 137 in vpr, etc.

This implements branch-phi-thread.ll:test3.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23397 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-20 01:48:40 +00:00
Chris Lattner
2e42e36698 Implement merging of blocks with the same condition if the block has multiple 
predecessors.  This implements branch-phi-thread.ll::test1


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23395 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-20 00:43:16 +00:00
Chris Lattner
9c88d98162 Reject a case we don't handle yet 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23393 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-19 23:57:04 +00:00
Chris Lattner
7e1ff8d2d9 remove debugging code :-/ 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23392 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-19 23:50:15 +00:00
Chris Lattner
eaba3a194c Implement SimplifyCFG/branch-phi-thread.ll, the most trivial case of threading 
control across branches with determined outcomes.  More generality to follow.
This triggers a couple thousand times in specint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23391 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-19 23:49:37 +00:00
Nate Begeman
44728a7bb6 Stub out the rest of the DAG Combiner. Just need to fill in the 
select_cc bits and then wrap it in a convenience function for  use with
regular select.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23389 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-19 22:34:01 +00:00
Chris Lattner
cea8688ee4 Teach the local spiller to turn stack slot loads into register-register copies 
when possible, avoiding the load (and avoiding the copy if the value is already
in the right register).

This patch came about when I noticed code like the following being generated:

  store R17 -> [SS1]
  ...blah...
  R4 = load [SS1]

This was causing an LSU reject on the G5.  This problem was due to the register
allocator folding spill code into a reg-reg copy (producing the load), which
prevented the spiller from being able to rewrite the load into a copy, despite
the fact that the value was already available in a register.  In the case
above, we now rip out the R4 load and replace it with a R4 = R17 copy.

This speeds up several programs on X86 (which spills a lot :) ), e.g.
smg2k from 22.39->20.60s, povray from 12.93->12.66s, 168.wupwise from
68.54->53.83s (!), 197.parser from 7.33->6.62s (!), etc.  This may have a larger
impact in some cases on the G5 (by avoiding LSU rejects), though it probably
won't trigger as often (less spilling in general).

Targets that implement folding of loads/stores into copies should implement
the isLoadFromStackSlot hook to get this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23388 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-19 06:56:21 +00:00