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18331 Commits

Author SHA1 Message Date
Duraid Madina fb43ef78c5 assorted fixes: 
* clean up immediates (we use 14, 22 and 64 bit immediates now. sane.)
  * fold r0/f0/f1 registers into comparisons against 0/0.0/1.0
  * fix nasty thinko - didn't use two-address form of conditional add
    for extending bools to integers, so occasionally there would be
    garbage in the result. it's amazing how often zeros are just
    sitting around in registers ;) - this should fix a bunch of tests.

llvm-svn: 21221
 2005-04-11 05:55:56 +00:00
Reid Spencer 7a763bfbc5 Ensure that the arguments passed to sys::Program::ExecuteAndWait include 
the program name as the first argument. Thanks go to Markus Oberhumer for
noticing this problem.

llvm-svn: 21220
 2005-04-11 05:48:04 +00:00
Jeff Cohen a3b1458175 Eliminate tabs 
llvm-svn: 21216
 2005-04-11 03:44:22 +00:00
Jeff Cohen ecbfa98ce7 Eliminate major source of VC++ "possible loss of data" warnings. 
llvm-svn: 21215
 2005-04-11 03:38:28 +00:00
Nate Begeman add0c63ad2 Fix libcall code to not pass a NULL Chain to LowerCallTo 
Fix libcall code to not crash or assert looking for an ADJCALLSTACKUP node
  when it is known that there is no ADJCALLSTACKDOWN to match.
Expand i64 multiply when ISD::MULHU is legal for the target.

llvm-svn: 21214
 2005-04-11 03:01:51 +00:00
Chris Lattner e2427c9afc Don't bother sign/zext_inreg'ing the result of an and operation if we know 
the result does change as a result of the extend.

This improves codegen for Alpha on this testcase:

int %a(ushort* %i) {
        %tmp.1 = load ushort* %i
        %tmp.2 = cast ushort %tmp.1 to int
        %tmp.4 = and int %tmp.2, 1
        ret int %tmp.4
}

Generating:

a:
        ldgp $29, 0($27)
        ldwu $0,0($16)
        and $0,1,$0
        ret $31,($26),1

instead of:

a:
        ldgp $29, 0($27)
        ldwu $0,0($16)
        and $0,1,$0
        addl $0,0,$0
        ret $31,($26),1

btw, alpha really should switch to livein/outs for args :)

llvm-svn: 21213
 2005-04-10 23:37:16 +00:00
Chris Lattner a3b7ef05f4 Teach legalize to deal with targets that don't support some SEXTLOAD/ZEXTLOADs 
llvm-svn: 21212
 2005-04-10 22:54:25 +00:00
Chris Lattner 672fe7267b The first argument to ExecuteAndWait should be the program name, but pointed 
out by Markus F.X.J. Oberhumer.

llvm-svn: 21211
 2005-04-10 20:59:38 +00:00
Chris Lattner 751cc5f49f fix this testcase so the regex doesn't match the function name 
llvm-svn: 21210
 2005-04-10 20:45:35 +00:00
Chris Lattner 391a351ede don't zextload fp values! 
llvm-svn: 21209
 2005-04-10 17:40:35 +00:00
Duraid Madina 7b0287b78d * store immediate values as int64_t, not int. come on, we should be happy 
when there are immediates, let's not worry about the memory overhead of
this :)

* add addU64Imm(uint64_t val) to machineinstrbuilder

(seriously: this seems required to support 64-bit immediates cleanly. if it
_really_ gets on your nerves, feel free to pull it out ;) )

coming up next week: "all your floating point constants are belong to us"

llvm-svn: 21208
 2005-04-10 09:18:55 +00:00
Nate Begeman 492370311d Fix another fixme: factor out the constant fp generation code. 
llvm-svn: 21207
 2005-04-10 06:06:10 +00:00
Nate Begeman 941a01802f Fix 64 bit argument loading that straddles the args in regs / args on stack 
boundary.

llvm-svn: 21206
 2005-04-10 05:53:14 +00:00
Chris Lattner c53cd501b5 Until we have a dag combiner, promote using zextload's instead of extloads. 
This gives the optimizer a bit of information about the top-part of the
value.

llvm-svn: 21205
 2005-04-10 04:33:47 +00:00
Chris Lattner f74c794ccf Fold zext_inreg(zextload), likewise for sext's 
llvm-svn: 21204
 2005-04-10 04:33:08 +00:00
Chris Lattner f2bff92411 add a simple xform 
llvm-svn: 21203
 2005-04-10 04:04:49 +00:00
Nate Begeman b076731713 Remove unnecessary Implicit Defs. Since r0 is not in allocation, we do not 
have to inform the register allocator it might be stepped on.

llvm-svn: 21202
 2005-04-10 03:59:42 +00:00
Chris Lattner 2de306ba83 make this harder 
llvm-svn: 21201
 2005-04-10 03:18:18 +00:00
Chris Lattner d65632a9ca oops add ~ 
llvm-svn: 21200
 2005-04-10 03:07:25 +00:00
Chris Lattner 38b1ae75fc new testcase for previously unsupported unary complex operators 
llvm-svn: 21199
 2005-04-10 03:06:27 +00:00
Nate Begeman 6566e8ac06 Make sure that BRCOND branches can be converted into long branches too. 
llvm-svn: 21198
 2005-04-10 01:48:29 +00:00
Nate Begeman 3345eadc37 Don't hand ISD::CALL nodes off to SelectExprFP. This fixes siod. 
llvm-svn: 21197
 2005-04-10 01:14:13 +00:00
Chris Lattner d8cbfe82ba Fix a thinko. If the operand is promoted, pass the promoted value into 
the new zero extend, not the original operand.  This fixes cast bool -> long
on ppc.

Add an unrelated fixme

llvm-svn: 21196
 2005-04-10 01:13:15 +00:00
Chris Lattner 9ff4b4190f rename getPPCOpcodeForSetCCNumber -> getPPCOpcodeForSetCCOpode to be more 
correct.  Remove the EmitComparison retvalue, as it is always the first arg.

Fix a place where we incorrectly passed in the setcc opcode instead of the
setcc number, causing us to miscompile crafty.  Crafty now works!

llvm-svn: 21195
 2005-04-10 01:03:31 +00:00
Nate Begeman 2121a54868 fix ISD::BRCONDTWOWAY codegen to not deference the end() iterator 
llvm-svn: 21193
 2005-04-09 23:35:05 +00:00
Chris Lattner 228fed92e6 Fix CodeGen/Generic/2005-05-09-GlobalInPHI.ll, which was reduced from 254.gap. 
This caused the "use before a def" assertion on some programs.

With this patch, 254.gap now passes with the PPC backend.

llvm-svn: 21191
 2005-04-09 22:05:17 +00:00
Chris Lattner db32a632c9 new testcase that used to crash the ppc fe. It could effect any simpleisel 
that is not careful, so I'm checking it into the generic tests.

llvm-svn: 21190
 2005-04-09 22:03:10 +00:00
Chris Lattner da504741da add a little peephole optimization. This allows us to codegen: 
int a(short i) {
        return i & 1;
}

as

_a:
        andi. r3, r3, 1
        blr

instead of:

_a:
        rlwinm r2, r3, 0, 16, 31
        andi. r3, r2, 1
        blr

on ppc.  It should also help the other risc targets.

llvm-svn: 21189
 2005-04-09 21:43:54 +00:00
Chris Lattner e8e070dbfb do not set the root to null if an argument is dead 
llvm-svn: 21188
 2005-04-09 21:23:24 +00:00
Nate Begeman 8309a333dd Add rlwnm instruction for variable rotate 
Generate rotate left/right immediate
Generate code for brcondtwoway
Use new livein/liveout functionality

llvm-svn: 21187
 2005-04-09 20:09:12 +00:00
Chris Lattner 3a7f5768c5 Fix a crash on 173.applu by asking for a constant bigger than 32-bits. 
llvm-svn: 21185
 2005-04-09 19:47:21 +00:00
Chris Lattner a55a5f2580 Switch this instruction selector over to using liveins and liveouts, eliminating 
implicit defs on entry to the function.  yaay :)

llvm-svn: 21184
 2005-04-09 16:32:30 +00:00
Chris Lattner 1a44855f8f there is no need to remove this instruction, linscan does it already as it 
removes noop moves.

llvm-svn: 21183
 2005-04-09 16:24:20 +00:00
Chris Lattner 0b1681bce1 Adjust live intervals to support a livein set 
llvm-svn: 21182
 2005-04-09 16:17:50 +00:00
Chris Lattner b59006c4a1 Use live out sets for return values instead of imp_defs, which is cleaner and faster. 
llvm-svn: 21181
 2005-04-09 15:23:56 +00:00
Chris Lattner 4c6ab01a20 Consider the livein/out set for a function, allowing targets to not have to 
use ugly imp_def/imp_uses for arguments and return values.

llvm-svn: 21180
 2005-04-09 15:23:25 +00:00
Chris Lattner 576db37185 add routines to track the livein/out set for a function 
llvm-svn: 21179
 2005-04-09 15:22:53 +00:00
Duraid Madina 46aa06cfed ok, the "ia64 has a boatload of registers" joke stopped being funny today ;) 
* fix overallocation of integer (stacked) registers: we can't allocate
  registers for local use if they are required as output registers

this fixes 'toast' in the test suite, and all sorts of larger programs
like bzip2 etc.

llvm-svn: 21178
 2005-04-09 11:53:00 +00:00
Nate Begeman 2f64122319 Optimize FSEL a bit for fneg arguments. This fixes the recently added test 
case so that we emit

_test_fneg_sel:
.LBB_test_fneg_sel_0:   ;
        fsel f1, f1, f3, f2
        blr

instead of:

_test_fneg_sel:
.LBB_test_fneg_sel_0:   ;
        fneg f0, f1
        fneg f0, f0
        fsel f1, f0, f3, f2
        blr

llvm-svn: 21177
 2005-04-09 09:33:07 +00:00
Nate Begeman 7d3e44fb12 Add a testcase to make sure that we don't emit two fneg instructions back 
to back for certain fsel instructions.

llvm-svn: 21176
 2005-04-09 09:30:09 +00:00
Nate Begeman 968e44a900 Add cases to cover the rest of the patterns we should be matching 
llvm-svn: 21175
 2005-04-09 08:29:59 +00:00
Chris Lattner 888c5fdcc2 Fix CodeGen/SparcV9/2005-05-09-GEP-Crash.ll a crash on some specfp program 
lets hope this doesn't break other programs with induced entropy

llvm-svn: 21174
 2005-04-09 06:27:14 +00:00
Chris Lattner 3aa6ec0dda New testcase that the sparc backend crashes on 
llvm-svn: 21173
 2005-04-09 06:26:27 +00:00
Chris Lattner 6a31b878f8 recognize some patterns as fabs operations, so that fabs at the source level 
is deconstructed then reconstructed here.  This catches 19 fabs's in 177.mesa
9 in 168.wupwise, 5 in 171.swim, 3 in 172.mgrid, and 14 in 173.applu out of
specfp2000.

This allows the X86 code generator to make MUCH better code than before for
each of these and saves one instr on ppc.

This depends on the previous CFE patch to expose these correctly.

llvm-svn: 21171
 2005-04-09 05:15:53 +00:00
Chris Lattner d9748bcae5 make this test more interesting 
llvm-svn: 21170
 2005-04-09 04:55:14 +00:00
Chris Lattner ec90861662 add a test for fnabs 
llvm-svn: 21169
 2005-04-09 04:03:16 +00:00
Chris Lattner b9a11b8b7f add a partial test for the fma operations that ppc supports. I'm sure I'm 
missing some and not all of these match yet, but I'm sure that Nate will
clean up my mess :)

llvm-svn: 21168
 2005-04-09 04:01:32 +00:00
Chris Lattner 8a98c7f337 Emit BRCONDTWOWAY when possible. 
llvm-svn: 21167
 2005-04-09 03:30:29 +00:00
Chris Lattner fd98678a8a Legalize BRCONDTWOWAY into a BRCOND/BR pair if a target doesn't support it. 
llvm-svn: 21166
 2005-04-09 03:30:19 +00:00
Chris Lattner b0713c74a2 print and fold BRCONDTWOWAY correctly 
llvm-svn: 21165
 2005-04-09 03:27:28 +00:00