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3679 Commits

Author SHA1 Message Date
Chris Lattner
1f7f2544fc ignore generated files 
llvm-svn: 23263
 2005-09-07 23:47:44 +00:00
Chris Lattner
1769be4699 Remove some cases handled by the generated portion of the isel 
llvm-svn: 23262
 2005-09-07 23:45:15 +00:00
Chris Lattner
617b26ddd7 On non-apple systems, when using -march=ppc32, do not print: 
'' is not a recognized processor for this target (ignoring processor)

Default to "generic" instead of "" for the default CPU.

llvm-svn: 23257
 2005-09-07 05:45:33 +00:00
Chris Lattner
4c5e794a9c Print: 
'' is not a recognized processor for this target (ignoring processor)

instead of:

 is not a recognized processor for this target (ignoring processor)

llvm-svn: 23256
 2005-09-07 05:44:14 +00:00
Nate Begeman
718cae4eba Implement i64<->fp using the fctidz/fcfid instructions on PowerPC when we 
are allowed to generate 64-bit-only PowerPC instructions for 32 bit hosts,
such as the PowerPC 970.

This speeds up 189.lucas from 81.99 to 32.64 seconds.

llvm-svn: 23250
 2005-09-06 22:03:27 +00:00
Andrew Lenharth
6f61810447 Fix up the AssertXext problem, as well as adding it at calls 
llvm-svn: 23246
 2005-09-06 17:00:23 +00:00
Nate Begeman
a94912c555 Add note about future optimization noted in the ppc compiler writer's guide 
llvm-svn: 23245
 2005-09-06 15:30:48 +00:00
Nate Begeman
f1994fa030 Add accessor for 64bit flag, so that we can tell when it is safe to 
generate the fun in-register fp<->long instructions.

llvm-svn: 23244
 2005-09-06 15:30:12 +00:00
Andrew Lenharth
00a229859e revert part of the last change, should fix regressions 
llvm-svn: 23241
 2005-09-04 06:12:19 +00:00
Chris Lattner
e9b488e262 explicitly specify an operands list for patterns with inputs (e.g. neg) 
llvm-svn: 23240
 2005-09-03 01:28:40 +00:00
Chris Lattner
dcb9830e25 include the dag isel fragment 
llvm-svn: 23239
 2005-09-03 01:17:22 +00:00
Chris Lattner
4186020e3b ask for a dag isel 
llvm-svn: 23238
 2005-09-03 01:15:41 +00:00
Chris Lattner
cbfe5d4180 Change the isel to not break out of the big giant switch. Instead, the 
switch should never be exited, so its bottom is now unreachable.

llvm-svn: 23234
 2005-09-03 00:53:47 +00:00
Chris Lattner
47c5e11f36 rearrange logical ops to group them together more consistently. 
Define the PatFrag class which can be used to define subpatterns to match
things with.  Define 'not', and use it to define the patterns for andc,
nand, etc.

llvm-svn: 23233
 2005-09-03 00:21:51 +00:00
Chris Lattner
a1a3e767e3 Add AND/OR/XOR 
llvm-svn: 23232
 2005-09-02 22:35:53 +00:00
Chris Lattner
0b07b6f9a1 Add some initial patterns to simple binary instructions, though they 
currently don't do anything.  This elides patterns for binary operators
that ping on the carry flag, since we don't model it yet.

This patch also removes PPC::SUB, because it is dead.

llvm-svn: 23230
 2005-09-02 21:18:00 +00:00
Chris Lattner
e1a69ba1bd turn on dag isel by default 
llvm-svn: 23226
 2005-09-02 19:53:54 +00:00
Jim Laskey
1f9c40400c Add help support for -mcpu and -mattr. 
llvm-svn: 23222
 2005-09-02 19:27:43 +00:00
Andrew Lenharth
94da25ae50 Pull out Lowering in preperation for multiple ISels. Oh, and get rid of some stuff 
llvm-svn: 23220
 2005-09-02 18:46:02 +00:00
Chris Lattner
813a73e8e9 Decouple fsqrt from gpul optimizations, implementing fsqrt.ll. 
Remove the -enable-gpopt option which is subsumed by feature flags.

llvm-svn: 23218
 2005-09-02 18:33:05 +00:00
Jeff Cohen
930e81f03b Fix VC++ build errors 
llvm-svn: 23210
 2005-09-02 02:51:42 +00:00
Chris Lattner
6f9e01aa94 Restore this patch now that the latent bug has been fixed 
llvm-svn: 23209
 2005-09-02 01:24:55 +00:00
Chris Lattner
a58ee78b78 Revert the previous patch which causes a mysterious regression in toast. 
llvm-svn: 23207
 2005-09-02 00:47:05 +00:00
Chris Lattner
70e3e44ec4 Handle any_extend like zext 
llvm-svn: 23202
 2005-09-02 00:16:09 +00:00
Chris Lattner
eb4736b128 Handle ANY_EXTEND like ZERO_EXTEND. Simplify the extend/truncate code on 
the observation that it only has to handle i1 -> i64 and i64 -> i1.

llvm-svn: 23201
 2005-09-02 00:15:30 +00:00
Chris Lattner
983190ce4c Implement small-arguments.ll:test3 by teaching the DAG optimizer that 
the results of calls to functions returning small values are properly
sign/zero extended.

llvm-svn: 23198
 2005-09-01 23:44:32 +00:00
Chris Lattner
c3981dc548 Align functions to 16-byte boundaries, to eliminate noise in performance measurements. This improves the performance of 'treeadd' by about 20% with the dag 
isel, restoring it to the pattern-isel level (which happens to get the alignment right).

llvm-svn: 23194
 2005-09-01 23:08:50 +00:00
Chris Lattner
e24ce3bb28 Local labels on darwin apparently start with just 'L', not .L like other 
platforms.  This reduces executable size and makes shark realize the actual
bounds of functions instead of showing each MBB as a function :)

llvm-svn: 23193
 2005-09-01 21:48:35 +00:00
Jim Laskey
f32ef9a37f 1. Use SubtargetFeatures in llc/lli. 
2. Propagate feature "string" to all targets.

3. Implement use of SubtargetFeatures in PowerPCTargetSubtarget.

llvm-svn: 23192
 2005-09-01 21:38:21 +00:00
Jim Laskey
09a731071f This new class provides support for platform specific "features". The intent 
is to manage processor specific attributes from the command line.  See examples
of use in llc/lli and PowerPCTargetSubtarget.

llvm-svn: 23191
 2005-09-01 21:36:18 +00:00
Chris Lattner
b6d26dc675 Implement dynamic allocas correctly. In particular, because we were copying 
directly out of R1 (without using a CopyFromReg, which uses a chain), multiple
allocas were getting CSE'd together, producing bogus code.  For this:

int %foo(bool %X, int %A, int %B) {
        br bool %X, label %T, label %F
F:
        %G = alloca int
        %H = alloca int
        store int %A, int* %G
        store int %B, int* %H
        %R = load int* %G
        ret int %R
T:
        ret int 0
}

We were generating:

_foo:
        stwu r1, -16(r1)
        stw r31, 4(r1)
        or r31, r1, r1
        stw r1, 12(r31)
        cmpwi cr0, r3, 0
        bne cr0, .LBB_foo_2     ; T
.LBB_foo_1:     ; F
        li r2, 16
        subf r2, r2, r1   ;; One alloca
        or r1, r2, r2
        or r3, r1, r1
        or r1, r2, r2
        or r2, r1, r1
        stw r4, 0(r3)
        stw r5, 0(r2)
        lwz r3, 0(r3)
        lwz r1, 12(r31)
        lwz r31, 4(r31)
        lwz r1, 0(r1)
        blr
.LBB_foo_2:     ; T
        li r3, 0
        lwz r1, 12(r31)
        lwz r31, 4(r31)
        lwz r1, 0(r1)
        blr

Now we generate:

_foo:
        stwu r1, -16(r1)
        stw r31, 4(r1)
        or r31, r1, r1
        stw r1, 12(r31)
        cmpwi cr0, r3, 0
        bne cr0, .LBB_foo_2     ; T
.LBB_foo_1:     ; F
        or r2, r1, r1
        li r3, 16
        subf r2, r3, r2  ;; Alloca 1
        or r1, r2, r2
        or r2, r1, r1
        or r6, r1, r1
        subf r3, r3, r6  ;; Alloca 2
        or r1, r3, r3
        or r3, r1, r1
        stw r4, 0(r2)
        stw r5, 0(r3)
        lwz r3, 0(r2)
        lwz r1, 12(r31)
        lwz r31, 4(r31)
        lwz r1, 0(r1)
        blr
.LBB_foo_2:     ; T
        li r3, 0
        lwz r1, 12(r31)
        lwz r31, 4(r31)
        lwz r1, 0(r1)
        blr

This fixes Povray and SPASS with the dag isel, the last two failing cases.
Tommorow we will hopefully turn it on by default! :)

llvm-svn: 23190
 2005-09-01 21:31:30 +00:00
Chris Lattner
88cc0407e3 Fix a bug where we were useing HA to get the high part, which seems like it 
could cause a miscompile.  Fixing this didn't fix the two programs that fail
though.  :(

This also changes the implementation to follow the pattern selector more
closely, causing us to select 0 to li instead of lis.

llvm-svn: 23189
 2005-09-01 19:38:28 +00:00
Chris Lattner
0dacf023bf Do not select the operands being passed into SelectCC. IT does this itself 
and selecting early prevents folding immediates into the cmpw* instructions

llvm-svn: 23188
 2005-09-01 19:20:44 +00:00
Chris Lattner
914a0dbba1 Move FCTIWZ handling out of the instruction selectors and into legalization, 
getting them out of the business of making stack slots.

llvm-svn: 23180
 2005-08-31 21:09:52 +00:00
Chris Lattner
ed72c03aa1 Remove dead code 
llvm-svn: 23179
 2005-08-31 20:25:15 +00:00
Chris Lattner
173c3fb3e5 Move SHL,SHR i64 -> legalizer 
llvm-svn: 23178
 2005-08-31 20:23:54 +00:00
Chris Lattner
89c78777c0 Remove code that is now dead from the pattern isel. 
llvm-svn: 23177
 2005-08-31 19:11:36 +00:00
Chris Lattner
353d5c167f lower sra_parts on the dag, implementing it for the dag isel, and exposing 
the ops to dag optimization.

llvm-svn: 23176
 2005-08-31 19:09:57 +00:00
Chris Lattner
eef2e52921 add assert zext/sext to the dag isel 
llvm-svn: 23171
 2005-08-31 18:08:46 +00:00
Chris Lattner
2d4180badc Handle AssertSext/AssertZext nodes, fixing the regressions last night. 
llvm-svn: 23170
 2005-08-31 17:48:04 +00:00
Nate Begeman
c28c33f5a4 Enable generation of AssertSext and AssertZext in the PPC backend. 
llvm-svn: 23168
 2005-08-31 01:58:39 +00:00
Chris Lattner
3d6bf9e384 Fix 'ret long' to return the high and lo parts in the right registers. This 
fixes crafty and probably others.

llvm-svn: 23167
 2005-08-31 01:34:29 +00:00
Chris Lattner
f08ec1bc4f now that physregs can exist in the same dag with multiple types, remove some 
ugly hacks

llvm-svn: 23162
 2005-08-30 22:59:48 +00:00
Chris Lattner
0739f5a9da Fix type mismatches when passing f32 values to calls 
llvm-svn: 23159
 2005-08-30 21:28:19 +00:00
Chris Lattner
2f4de6af75 Fix some indentation (first hunks). 
Remove code (last hunk) that miscompiled immediate and's, such as
  and uint %tmp.30, 4294958079

into

 andi. r8, r8, 56319
 andis. r8, r8, 65535

instead of:

 li r9, -9217
 and r8, r8, r9

The first always generates zero.

This fixes espresso.

llvm-svn: 23155
 2005-08-30 18:37:48 +00:00
Chris Lattner
fd2708cce1 Fix a problem Nate found where we swapped the operands of SHL/SHR_PARTS. This 
fixes fourinarow

llvm-svn: 23153
 2005-08-30 17:42:59 +00:00
Chris Lattner
6a4bdd85ad codegen ADD_PARTS correctly: put the results in the right registers! This 
fixes fhourstones

llvm-svn: 23152
 2005-08-30 17:40:13 +00:00
Chris Lattner
025f964997 add operands in the right order, fixing McCat/18-imp with the dag isel 
llvm-svn: 23150
 2005-08-30 17:13:58 +00:00
Chris Lattner
0e6343b2e4 Make sure the selector emits register register copies with flag operands 
linking them to calls when appropriate, this prevents the scheduler from
pulling these copies away from the call.

This fixes Ptrdist/yacr2

llvm-svn: 23143
 2005-08-30 01:57:02 +00:00
Chris Lattner
66ff5ca72d The first operand to AND does not always have more than two operands. This 
fixes MediaBench/toast with the dag selector

llvm-svn: 23141
 2005-08-30 00:59:16 +00:00
Chris Lattner
a31670b930 Fix a bug in my patch for legalizing to fsel. It cannot handle seteq/setne, 
which I failed to include when I moved the code over.  This fixes
MallocBench/gs.

llvm-svn: 23140
 2005-08-30 00:45:18 +00:00
Chris Lattner
874adc990b emit FMR instructions to convert f64<->f32 instructions, so things like 
STOREs, know the right type to store.

llvm-svn: 23139
 2005-08-30 00:30:43 +00:00
Chris Lattner
14f50b0df9 Fix some really strange indentation that xcode likes to use. 
no xcode, this is not right:

   if (!foo) break;
     X;

llvm-svn: 23138
 2005-08-30 00:19:00 +00:00
Chris Lattner
5c81e4b034 fix a crash in cfrac 
llvm-svn: 23137
 2005-08-29 23:49:25 +00:00
Chris Lattner
7a6dfa3f21 Implement DYNAMIC_STACKALLOC, wrap some long lines 
llvm-svn: 23136
 2005-08-29 23:30:11 +00:00
Chris Lattner
238fbfcf67 Fix a dumb bug of mine where we were mishandling the PPC ABI (undef handling). 
This fixes voronoi and bh in Olden, allowing all of olden to pass!

llvm-svn: 23133
 2005-08-29 22:22:57 +00:00
Chris Lattner
bc3fb85efd Fix a bug the last patch exposed in treeadd among others 
llvm-svn: 23127
 2005-08-29 01:07:02 +00:00
Chris Lattner
9821903d65 A hack to fix a problem folding immedaites. This fixes Olden/power. 
llvm-svn: 23126
 2005-08-29 01:01:01 +00:00
Chris Lattner
eda3f49562 Fix order of operands for copytoreg node when emitting calls. This fixes 
Olden/msFix order of operands for copytoreg node when emitting calls.  This fixes
Olden/mstt.

llvm-svn: 23125
 2005-08-29 00:26:57 +00:00
Chris Lattner
33297adfb6 add operands in the correct order 
llvm-svn: 23123
 2005-08-29 00:02:01 +00:00
Chris Lattner
bd8cf87228 Fix a bug in FP_EXTEND, implement FP_TO_SINT 
llvm-svn: 23121
 2005-08-28 23:59:09 +00:00
Chris Lattner
8a7276ca25 fix an assertion failure in treeadd 
llvm-svn: 23120
 2005-08-28 23:39:22 +00:00
Reid Spencer
a4acd20ae2 Adjust to member variable name change. 
llvm-svn: 23119
 2005-08-27 19:09:48 +00:00
Reid Spencer
31b20389f9 Change the names of member variables per Chris' instructions, and document 
them more clearly.

llvm-svn: 23118
 2005-08-27 19:09:02 +00:00
Chris Lattner
25ce484c27 The condition register being branched on may not be cr0, as such, print it. 
This fixes: UnitTests/2005-07-17-INT-To-FP.c

llvm-svn: 23112
 2005-08-26 23:42:05 +00:00
Chris Lattner
a3689deabf Propagate cr# from COND_BRANCH to the actual branch instruction as appropriate 
llvm-svn: 23111
 2005-08-26 23:41:27 +00:00
Chris Lattner
780ca10bcc allow code using mtcrf to assemble 
llvm-svn: 23107
 2005-08-26 22:05:54 +00:00
Nate Begeman
d7f60a5eb6 Remove operand type 'crbit', since it is no longer used 
llvm-svn: 23106
 2005-08-26 22:04:17 +00:00
Chris Lattner
46daaac4e0 teach getClass what a condition reg is 
llvm-svn: 23105
 2005-08-26 21:51:29 +00:00
Chris Lattner
2c7a9bde76 Minor cleanups: 
* avoid calling getClass() multiple times (it is relatively expensive)
  * Allow -disable-fp-elim to turn of frame pointer elimination.

llvm-svn: 23104
 2005-08-26 21:49:18 +00:00
Chris Lattner
f470259b50 implement SELECT_CC fully for the DAG->DAG isel! 
llvm-svn: 23101
 2005-08-26 21:23:58 +00:00
Chris Lattner
497c012e54 spell this right 
llvm-svn: 23099
 2005-08-26 20:55:40 +00:00
Chris Lattner
405266a17c Add a flag 
llvm-svn: 23092
 2005-08-26 20:29:01 +00:00
Chris Lattner
04b88ca768 Make fsel emission work with both the pattern and dag-dag selectors, by 
giving it a non-instruction opcode.  The dag->dag selector used to not
select the operands of the fsel, because it thought that whole tree was
already selected.

llvm-svn: 23091
 2005-08-26 20:25:03 +00:00
Chris Lattner
0d2ee60c48 implement the fold for: 
bool %test(int %X, int %Y) {
        %C = setne int %X, 0
        ret bool %C
}

to:

_test:
        addic r2, r3, -1
        subfe r3, r2, r3
        blr

llvm-svn: 23089
 2005-08-26 18:46:49 +00:00
Chris Lattner
2d90a50778 Changes to adjust to new ReplaceAllUsesWith syntax. Change FP_EXTEND to 
just return its input, instead of emitting an explicit copy.

llvm-svn: 23088
 2005-08-26 18:37:23 +00:00
Nate Begeman
1c59e5bdd5 Remove some code made dead by the fsel patch 
llvm-svn: 23085
 2005-08-26 17:45:06 +00:00
Chris Lattner
a1c6bad722 now that fsel is formed during legalization, this code is dead 
llvm-svn: 23084
 2005-08-26 17:40:39 +00:00
Chris Lattner
007e1e07e3 implement the other half of the select_cc -> fsel lowering, which handles 
when the RHS of the comparison is 0.0.  Turn this on by default.

llvm-svn: 23083
 2005-08-26 17:36:52 +00:00
Chris Lattner
439ef36320 Fix a bug in my previous checkin 
llvm-svn: 23082
 2005-08-26 17:18:44 +00:00
Chris Lattner
a31708e6b3 Change ConstantPoolSDNode to actually hold the Constant itself instead of 
putting it into the constant pool.  This allows the isel machinery to
create constants that it will end up deciding are not needed, without them
ending up in the resultant function constant pool.

llvm-svn: 23081
 2005-08-26 17:15:30 +00:00
Chris Lattner
97a34c653d Fix some warnings in an optimized build 
llvm-svn: 23080
 2005-08-26 16:38:51 +00:00
Chris Lattner
929c00e9e9 Fix a huge annoyance: SelectNodeTo took types before the opcode unlike 
every other SD API.  Fix it to take the opcode before the types.

llvm-svn: 23079
 2005-08-26 16:36:26 +00:00
Nate Begeman
2d6f0e333a Fix JIT encoding of conditional branches 
llvm-svn: 23076
 2005-08-26 04:11:42 +00:00
Chris Lattner
dae9a4899f add initial support for converting select_cc -> fsel in the legalizer 
instead of in the backend.  This currently handles fsel cases with registers,
but doesn't have the 0.0 and -0.0 optimization enabled yet.

Once this is finished, special hack for fp immediates can go away.

llvm-svn: 23075
 2005-08-26 00:52:45 +00:00
Nate Begeman
254ecb7886 SUBFIC produces two results, not one. 
llvm-svn: 23073
 2005-08-26 00:34:06 +00:00
Nate Begeman
0619930d74 Implement SHL_PARTS and SRL_PARTS 
llvm-svn: 23072
 2005-08-26 00:28:00 +00:00
Chris Lattner
578b7f212f Emit the lo/hi parts in the right order :) 
llvm-svn: 23068
 2005-08-25 23:36:49 +00:00
Chris Lattner
4433d74ea5 implement support for 64-bit add/sub, fix a broken assertion for 64-bit 
return.  Allow the udiv breaker-upper to work with any non-zero constant
operand.

llvm-svn: 23066
 2005-08-25 23:21:06 +00:00
Chris Lattner
e4cf3ab5d4 simplify the add/sub_parts code 
llvm-svn: 23065
 2005-08-25 23:19:58 +00:00
Chris Lattner
e33ad38b02 Finish implementing SDIV/UDIV by copying over the majik constant code from 
ISelPattern

llvm-svn: 23062
 2005-08-25 22:04:30 +00:00
Chris Lattner
dc8ebb9302 Simplify some code. It's not clear why the UDIV expanded sequence 
doesn't work for large uint constants, but we'll keep the current behavior

llvm-svn: 23061
 2005-08-25 22:03:50 +00:00
Chris Lattner
32600ecfeb Implement setcc correctly for G5 and non-G5 systems 
llvm-svn: 23060
 2005-08-25 21:39:42 +00:00
Chris Lattner
b9c2c40046 implement setcc on the G5. We're still missing the non-g5 specific bits, but 
they will come later.

llvm-svn: 23059
 2005-08-25 20:08:18 +00:00
Nate Begeman
0f60221f2e Remove option to make SetCC illegal on PowerPC after long discussion with 
Chris.  This will be accomplished through correctly modeling CR's and
subregs.

llvm-svn: 23056
 2005-08-25 20:01:10 +00:00
Chris Lattner
a79c58d1e4 Add support for sdiv by 2^k and -2^k. Producing code like: 
_test:
        srawi r2, r3, 2
        addze r3, r2
        blr

llvm-svn: 23052
 2005-08-25 17:50:06 +00:00
Chris Lattner
8ee8270e31 fit in 80 cols 
llvm-svn: 23051
 2005-08-25 17:49:31 +00:00
Chris Lattner
713643bc71 add an enum value 
llvm-svn: 23048
 2005-08-25 17:07:09 +00:00
Chris Lattner
77350a373e Implement support for taking the address of constant pool indices, which 
is used by the int -> FP code among other things.  This gets
2005-05-12-Int64ToFP past that failure, to dying on lack of support for add_parts

llvm-svn: 23042
 2005-08-25 05:04:11 +00:00
Chris Lattner
2296582d06 Add support for FP constants, fixing UnitTests/2004-02-02-NegativeZero 
llvm-svn: 23038
 2005-08-25 04:47:18 +00:00
Chris Lattner
f36622ea2e Fully implement frame index, so that we can pass the address of alloca's 
around to functions and stuff

llvm-svn: 23036
 2005-08-25 00:45:43 +00:00
Chris Lattner
c9cc2b0acd implement unconditional branches, fixing UnitTests/2003-05-02-DependentPHI.c 
llvm-svn: 23034
 2005-08-25 00:29:58 +00:00
Chris Lattner
36715208c4 LFS/STFS load and store FP values, not integer ones. This change allows us 
to codegen this: float foo() { return 1.245; }

into this:

_foo:
        lis r2, ha16(.CPI_foo_0)
        lfs f1, lo16(.CPI_foo_0)(r2)
        blr

instead of this:

_foo:
        lis r2, ha16(.CPI_foo_0)
        lfs r2, lo16(.CPI_foo_0)(r2)   <-- ouch
        or f1, r2, r2                  <-- ouch
        blr

with the dag isel.

llvm-svn: 23033
 2005-08-25 00:26:22 +00:00
Chris Lattner
286b85144c Fix a broken assertion 
llvm-svn: 23032
 2005-08-25 00:19:12 +00:00
Chris Lattner
fc59d17656 Fix a warning 
llvm-svn: 23031
 2005-08-25 00:05:15 +00:00
Chris Lattner
4349a69f74 fix a warning in optimized build 
llvm-svn: 23030
 2005-08-25 00:03:21 +00:00
Chris Lattner
898278d586 Fix some warnings 
llvm-svn: 23029
 2005-08-25 00:00:26 +00:00
Chris Lattner
8f595df1a6 Split IMPLICIT_DEF into IMPLICIT_DEF_GPR and IMPLICIT_DEF_FP, so that the 
instructions take a consistent reg class.  Implement ISD::UNDEF in the dag->dag
selector to generate this, fixing UnitTests/2003-07-06-IntOverflow.

llvm-svn: 23028
 2005-08-24 23:08:16 +00:00
Chris Lattner
5efe9406a6 implement support for calls 
llvm-svn: 23026
 2005-08-24 22:45:17 +00:00
Chris Lattner
8824bd228b Remove some dead cases. 
Emit the indcall sequence as:

mtctr inreg
mr R12, inreg
btctr

If inreg and R12 aren't coallesced, this reduces the odds of having the mtctr
and btctr in the same dispatch group.  :)

llvm-svn: 23023
 2005-08-24 22:21:47 +00:00
Chris Lattner
8d151627a8 add an idea 
llvm-svn: 23020
 2005-08-24 18:15:24 +00:00
Chris Lattner
ea62b04502 Adjust to new interface 
llvm-svn: 23010
 2005-08-24 16:34:12 +00:00
Nate Begeman
326b3809f4 Whoops, fix a thinko. All cases except SETNE are now handled by the 
target independent code in SelectionDAG.cpp

llvm-svn: 23002
 2005-08-24 05:06:48 +00:00
Nate Begeman
8e1c08e083 Remove unused statistic 
Prefer 'neg X' to 'subfic 0, X' since neg does not set XER[CA]

llvm-svn: 23001
 2005-08-24 05:03:20 +00:00
Nate Begeman
5d3e28b04c Add the "ppc specific" setcc-equivalent select_cc cases 
Prefer 'neg X' to 'subfic 0, X' since it does not set XER[CA]

llvm-svn: 23000
 2005-08-24 04:59:21 +00:00
Chris Lattner
f034da3bd4 Add callseq_begin/end support 
Call stil not supported yet

llvm-svn: 22998
 2005-08-24 00:47:15 +00:00
Chris Lattner
0444d66753 Adjust to new livevars interface 
llvm-svn: 22991
 2005-08-23 23:41:14 +00:00
Chris Lattner
51bad854a7 Simplify this code by using LiveVariables::KillsRegister 
llvm-svn: 22988
 2005-08-23 22:49:55 +00:00
Chris Lattner
aba58bd49b Fix PR618 and Regression/CodeGen/CBackend/2005-08-23-Fmod.ll by not emitting 
x%y for 'rem' on fp values.

llvm-svn: 22984
 2005-08-23 20:22:50 +00:00
Chris Lattner
86a4a4745c add a note 
llvm-svn: 22982
 2005-08-23 06:27:59 +00:00
Nate Begeman
a8ec868347 Ack, typo 
llvm-svn: 22981
 2005-08-23 05:45:10 +00:00
Nate Begeman
0ac8bb2fe1 Add an option to make SetCC illegal as a beta option 
llvm-svn: 22979
 2005-08-23 05:42:36 +00:00
Nate Begeman
383c7553a6 Remove some instructions we no longer generate 
llvm-svn: 22976
 2005-08-23 01:16:46 +00:00
Chris Lattner
86ab578e3e Remove some regs that are not used. 
llvm-svn: 22975
 2005-08-22 22:32:13 +00:00
Chris Lattner
362eff4ccd Nate noticed that 30% of the malloc/frees in llc come from calls to LowercaseString 
in the asmprinter.  This changes the .td files to use lower case register names,
avoiding the need to do this call.  This speeds up the asmprinter from 1.52s
to 1.06s on kc++ in a release build.

llvm-svn: 22974
 2005-08-22 22:00:02 +00:00
Chris Lattner
ef8f06856f Fix a crash I introduced into the IA64 backend with my copyfromreg change. 
It used to crash on any function that took float arguments.

llvm-svn: 22973
 2005-08-22 21:33:11 +00:00
Chris Lattner
36b8efcedd Add a pass name for -time-passes output 
llvm-svn: 22970
 2005-08-22 18:28:09 +00:00
Chris Lattner
4c9d1715ff Implement stores. 
llvm-svn: 22963
 2005-08-22 01:27:59 +00:00
Chris Lattner
86aceaf749 Fix compilation of: 
float %test2(float* %P) {
        %Q = load float* %P
        %R = add float %Q, %Q
        ret float %R
}

By returning the right result.

llvm-svn: 22961
 2005-08-22 00:59:14 +00:00
Chris Lattner
81cde8c7b6 Make sure expressions only have one use before emitting them into a place that is conditionally executed 
llvm-svn: 22960
 2005-08-22 00:47:28 +00:00
Chris Lattner
a3f9415a81 Implement most of load support. There is still a bug though. 
llvm-svn: 22959
 2005-08-21 22:31:09 +00:00
Chris Lattner
0d32366da7 Don't print out the MBB label for the entry mbb 
llvm-svn: 22953
 2005-08-21 19:09:33 +00:00
Chris Lattner
d8b7b492fe Simplify the logic for BRTWOWAY_CC handling. The isel code already 
simplifies BRTWOWAY into BR if one of the results is a fall-through.
Unless I'm missing something, there is no reason to duplicate this
in the target-specific code.

llvm-svn: 22952
 2005-08-21 19:03:28 +00:00
Chris Lattner
0f148968ba Implement selection for branches. 
llvm-svn: 22951
 2005-08-21 18:50:37 +00:00
Chris Lattner
1994775d9d If the false value for a select_cc is really simple (has no inputs), evaluate 
it in the block.  This codegens:

int %test(bool %c) {
        %retval = select bool %c, int 17, int 1
        ret int %retval
}

as:

_test:
        rlwinm r2, r3, 0, 31, 31
        li r2, 17
        cmpwi cr0, r3, 0
        bne .LBB_test_2 ;
.LBB_test_1:    ;
        li r2, 1
.LBB_test_2:    ;
        or r3, r2, r2
        blr

instead of:

_test:
        rlwinm r2, r3, 0, 31, 31
        li r2, 17
        li r4, 1
        cmpwi cr0, r3, 0
        bne .LBB_test_2 ;
.LBB_test_1:    ;
        or r2, r4, r4
.LBB_test_2:    ;
        or r3, r2, r2
        blr

... which is one fewer instruction.  The savings are more significant for
global address and constantfp nodes.

llvm-svn: 22946
 2005-08-21 17:41:11 +00:00
Duraid Madina
06affa0edd reenable collapse of loadimm+AND -> dep.z (thanks guys) 
llvm-svn: 22944
 2005-08-21 15:43:53 +00:00
Jim Laskey
43192e173f Repair an out by one error for IA64. 
llvm-svn: 22942
 2005-08-20 11:05:23 +00:00
Chris Lattner
9fbbc41021 add support for global address, including PIC support. 
This REALLY should be lowered by the legalizer!

llvm-svn: 22941
 2005-08-19 22:38:53 +00:00
Chris Lattner
a8f147c1b4 Fix a typeo, no wonder all tokenfactor edges were the same! 
llvm-svn: 22935
 2005-08-19 21:33:02 +00:00
Chris Lattner
2ac3fd08d2 Split RegisterClass 'Methods' into MethodProtos and MethodBodies 
llvm-svn: 22929
 2005-08-19 19:13:20 +00:00
Chris Lattner
78107cb342 put reg classes into namespace 
llvm-svn: 22927
 2005-08-19 18:53:43 +00:00
Chris Lattner
2b1d327d29 Put reg classes into namespaces 
llvm-svn: 22926
 2005-08-19 18:52:55 +00:00
Chris Lattner
f86654ffde Put register classes into namespaces 
llvm-svn: 22925
 2005-08-19 18:51:57 +00:00
Chris Lattner
9d61d4a3e4 Put register classes in namespaces 
llvm-svn: 22924
 2005-08-19 18:50:46 +00:00
Chris Lattner
15d2e8a253 Fix code that assumes the register info will be dumped into a target 
namespace instead of the reg class namespace.  Update getRegClassForType()
to use modified names due to tblgen change.

llvm-svn: 22923
 2005-08-19 18:50:11 +00:00
Chris Lattner
47005fe346 put reg classes in namespaces 
llvm-svn: 22922
 2005-08-19 18:49:22 +00:00
Chris Lattner
9a9fe27bd2 Require that targets specify a namespace for their register classes. 
llvm-svn: 22921
 2005-08-19 18:48:48 +00:00
Chris Lattner
61526c0f6c The skeleton target has never had an isel 
llvm-svn: 22917
 2005-08-19 18:35:41 +00:00
Chris Lattner
f0b42a6f29 This code has always been dead on itanium 
llvm-svn: 22916
 2005-08-19 18:34:37 +00:00
Chris Lattner
b46e525e23 This code has always been dead for alpha 
llvm-svn: 22915
 2005-08-19 18:33:26 +00:00