Nate Begeman
a2374d39df
fix ISD::BRCONDTWOWAY codegen to not deference the end() iterator
...
llvm-svn: 21193
2005-04-09 23:35:05 +00:00
Chris Lattner
17c60891c1
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
ed826ae12c
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
034716de24
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
b630949c2e
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
dda6155d19
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
72b1964108
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
c97f9f403f
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
77ab286605
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
f408e9a07b
Adjust live intervals to support a livein set
...
llvm-svn: 21182
2005-04-09 16:17:50 +00:00
Chris Lattner
fd4d6e0847
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
1a9c8fc64a
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
3cbcd49059
add routines to track the livein/out set for a function
...
llvm-svn: 21179
2005-04-09 15:22:53 +00:00
Duraid Madina
2d3e52576d
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
98bcb13bfa
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
d2c77c276e
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
eae59b7df3
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
3fde68ea7a
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
8a5098c5bf
New testcase that the sparc backend crashes on
...
llvm-svn: 21173
2005-04-09 06:26:27 +00:00
Chris Lattner
afa0001d54
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
08e03f0b05
make this test more interesting
...
llvm-svn: 21170
2005-04-09 04:55:14 +00:00
Chris Lattner
c79ab1eac9
add a test for fnabs
...
llvm-svn: 21169
2005-04-09 04:03:16 +00:00
Chris Lattner
60fd2fb6d8
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
8e6eafa8e1
Emit BRCONDTWOWAY when possible.
...
llvm-svn: 21167
2005-04-09 03:30:29 +00:00
Chris Lattner
55b73bda6c
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
da902bdf1b
print and fold BRCONDTWOWAY correctly
...
llvm-svn: 21165
2005-04-09 03:27:28 +00:00
Chris Lattner
39f963f968
This target does not support/want ISD::BRCONDTWOWAY
...
llvm-svn: 21164
2005-04-09 03:22:37 +00:00
Chris Lattner
c80baf5567
This target does not yet support ISD::BRCONDTWOWAY
...
llvm-svn: 21163
2005-04-09 03:22:30 +00:00
Chris Lattner
b0e6e4b693
Add a new node
...
llvm-svn: 21162
2005-04-09 03:21:50 +00:00
Nate Begeman
99fb6814bd
64b: Expand S/UREM
...
32b: No longer pattern match fneg(fsub(fmul)) as fnmsub
Pattern match fsub a, mul(b, c) as fnmsub
Pattern match fadd a, mul(b, c) as fmadd
Those changes speed up hydro2d by 2.5%, distray by 6%, and scimark by 8%
llvm-svn: 21161
2005-04-09 03:05:51 +00:00
Chris Lattner
31170cd2ec
canonicalize a bunch of operations involving fneg
...
llvm-svn: 21160
2005-04-09 03:02:46 +00:00
Nate Begeman
95e1b860a1
Fix 64b shifts
...
llvm-svn: 21159
2005-04-08 23:45:01 +00:00
Chris Lattner
6c466448d3
fix this method for 64-bit constants
...
llvm-svn: 21158
2005-04-08 21:31:29 +00:00
Nate Begeman
3fca499b8d
Match Mac OS X 64 bit calling conventions
...
llvm-svn: 21157
2005-04-08 21:26:05 +00:00
Andrew Lenharth
6eff2083b5
collect a few statistics, factor constants (constant loading and mult), fix logic operation pattern matchs, supress FP div when int dividing by a constant
...
llvm-svn: 21156
2005-04-08 17:28:49 +00:00
Andrew Lenharth
a77ebf3d85
oops
...
llvm-svn: 21155
2005-04-08 16:55:15 +00:00
Andrew Lenharth
3ae7f6c9ef
added some tests to check stupid pattern matching mistakes
...
llvm-svn: 21154
2005-04-08 16:46:44 +00:00
Duraid Madina
e7412561bf
fix bogus division-by-power-of-2 (was wrong for negative input, adds extr insn)
...
fix hack in division (clean up frcpa instruction)
llvm-svn: 21153
2005-04-08 10:01:48 +00:00
Chris Lattner
f82999fabe
Fix bug: InstCombine/2005-05-07-UDivSelectCrash.ll
...
llvm-svn: 21152
2005-04-08 04:03:26 +00:00
Chris Lattner
33c4405522
new testcase that crashes the instcombiner.
...
llvm-svn: 21151
2005-04-08 03:58:21 +00:00
Nate Begeman
6875356db1
Optimized code sequences for setcc reg, 0
...
Optimized code sequence for (a < 0) ? b : 0
llvm-svn: 21150
2005-04-07 20:30:01 +00:00
Andrew Lenharth
b1b7ef0979
Alpha zero extends setcc results
...
llvm-svn: 21149
2005-04-07 20:11:32 +00:00
Chris Lattner
9a56ef5693
If a target zero or sign extends the result of its setcc, allow folding of
...
this into sign/zero extension instructions later.
On PPC, for example, this testcase:
%G = external global sbyte
implementation
void %test(int %X, int %Y) {
%C = setlt int %X, %Y
%D = cast bool %C to sbyte
store sbyte %D, sbyte* %G
ret void
}
Now codegens to:
cmpw cr0, r3, r4
li r3, 1
li r4, 0
blt .LBB_test_2 ;
.LBB_test_1: ;
or r3, r4, r4
.LBB_test_2: ;
addis r2, r2, ha16(L_G$non_lazy_ptr-"L00000$pb")
lwz r2, lo16(L_G$non_lazy_ptr-"L00000$pb")(r2)
stb r3, 0(r2)
instead of:
cmpw cr0, r3, r4
li r3, 1
li r4, 0
blt .LBB_test_2 ;
.LBB_test_1: ;
or r3, r4, r4
.LBB_test_2: ;
*** rlwinm r3, r3, 0, 31, 31
addis r2, r2, ha16(L_G$non_lazy_ptr-"L00000$pb")
lwz r2, lo16(L_G$non_lazy_ptr-"L00000$pb")(r2)
stb r3, 0(r2)
llvm-svn: 21148
2005-04-07 19:43:53 +00:00
Chris Lattner
352dd3e579
PowerPC zero extends setcc results
...
llvm-svn: 21147
2005-04-07 19:41:49 +00:00
Chris Lattner
583dcc66f2
X86 zero extends setcc results
...
llvm-svn: 21146
2005-04-07 19:41:46 +00:00
Chris Lattner
f275f2af41
Allow targets which produce setcc results in non-MVT::i1 registers to describe
...
what the contents of the top bits of these registers are, in the common cases
of targets that sign and zero extend the results.
llvm-svn: 21145
2005-04-07 19:41:18 +00:00
Chris Lattner
bbe0e9e9db
Remove somethign I had for testing
...
llvm-svn: 21144
2005-04-07 18:58:54 +00:00
Andrew Lenharth
c3e5c42b86
fix a small optimization opertunity and make gcc happy
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llvm-svn: 21143
2005-04-07 18:15:28 +00:00
Chris Lattner
ee836c7b32
This patch does two things. First, it canonicalizes 'X >= C' -> 'X > C-1'
...
(likewise for <= >=u >=u).
Second, it implements a special case hack to turn 'X gtu SINTMAX' -> 'X lt 0'
On powerpc, for example, this changes this:
lis r2, 32767
ori r2, r2, 65535
cmplw cr0, r3, r2
bgt .LBB_test_2
into:
cmpwi cr0, r3, 0
blt .LBB_test_2
llvm-svn: 21142
2005-04-07 18:14:58 +00:00
Andrew Lenharth
41c31864ee
match case change in codegen
...
llvm-svn: 21141
2005-04-07 17:47:00 +00:00