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18338 Commits

Author SHA1 Message Date
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
Chris Lattner a3a135a9f7 This target does not support/want ISD::BRCONDTWOWAY 
llvm-svn: 21164
 2005-04-09 03:22:37 +00:00
Chris Lattner 4f77badaa3 This target does not yet support ISD::BRCONDTWOWAY 
llvm-svn: 21163
 2005-04-09 03:22:30 +00:00
Chris Lattner 4b1323e846 Add a new node 
llvm-svn: 21162
 2005-04-09 03:21:50 +00:00
Nate Begeman e8ce0cda40 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 0ea81f9db4 canonicalize a bunch of operations involving fneg 
llvm-svn: 21160
 2005-04-09 03:02:46 +00:00
Nate Begeman f50b597f67 Fix 64b shifts 
llvm-svn: 21159
 2005-04-08 23:45:01 +00:00
Chris Lattner 61b6f04ae9 fix this method for 64-bit constants 
llvm-svn: 21158
 2005-04-08 21:31:29 +00:00
Nate Begeman 705d3c18e8 Match Mac OS X 64 bit calling conventions 
llvm-svn: 21157
 2005-04-08 21:26:05 +00:00
Andrew Lenharth de5aed3f12 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 ce9e043c78 oops 
llvm-svn: 21155
 2005-04-08 16:55:15 +00:00
Andrew Lenharth 2e184e2522 added some tests to check stupid pattern matching mistakes 
llvm-svn: 21154
 2005-04-08 16:46:44 +00:00
Duraid Madina 41ff502549 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 4236261930 Fix bug: InstCombine/2005-05-07-UDivSelectCrash.ll 
llvm-svn: 21152
 2005-04-08 04:03:26 +00:00
Chris Lattner 9e2b5fc65a new testcase that crashes the instcombiner. 
llvm-svn: 21151
 2005-04-08 03:58:21 +00:00
Nate Begeman b1f66d1af2 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 534eebb317 Alpha zero extends setcc results 
llvm-svn: 21149
 2005-04-07 20:11:32 +00:00
Chris Lattner b32d9318d2 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 532ac79122 PowerPC zero extends setcc results 
llvm-svn: 21147
 2005-04-07 19:41:49 +00:00
Chris Lattner 38fd97084b X86 zero extends setcc results 
llvm-svn: 21146
 2005-04-07 19:41:46 +00:00
Chris Lattner 693e797be9 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 dfed7355c9 Remove somethign I had for testing 
llvm-svn: 21144
 2005-04-07 18:58:54 +00:00
Andrew Lenharth 9807ac5d3c fix a small optimization opertunity and make gcc happy 
llvm-svn: 21143
 2005-04-07 18:15:28 +00:00
Chris Lattner 6b03a0cba1 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 31f5e2f73f match case change in codegen 
llvm-svn: 21141
 2005-04-07 17:47:00 +00:00
Andrew Lenharth 6b492bec30 fixup magic constant making code. tested by thousands of random divisions.... by 10000. ok, so random divisors would be good too, but this at least fixes some things 
llvm-svn: 21140
 2005-04-07 17:19:16 +00:00
Andrew Lenharth d2da7177f2 lowercase instructions, makes diff happier 
llvm-svn: 21139
 2005-04-07 17:17:48 +00:00
Chris Lattner 4706046e68 Implement the following xforms: 
(X-Y)-X --> -Y
A + (B - A) --> B
(B - A) + A --> B

llvm-svn: 21138
 2005-04-07 17:14:51 +00:00
Chris Lattner 679c1119e8 new test 
llvm-svn: 21137
 2005-04-07 16:41:45 +00:00
Chris Lattner c7f3c1a00e Implement InstCombine/add.ll:test28, transforming C1-(X+C2) --> (C1-C2)-X. 
This occurs several dozen times in specint2k, particularly in crafty and gcc
apparently.

llvm-svn: 21136
 2005-04-07 16:28:01 +00:00
Chris Lattner dd83183c1e new testcase 
llvm-svn: 21135
 2005-04-07 16:24:59 +00:00
Chris Lattner a9be4490d8 Transform X-(X+Y) == -Y and X-(Y+X) == -Y 
llvm-svn: 21134
 2005-04-07 16:15:25 +00:00
Andrew Lenharth 05e51d92e0 It wasn't happy about this either 
llvm-svn: 21133
 2005-04-07 14:18:13 +00:00
Andrew Lenharth 85f34a5682 Yea, it wasn't happy 
llvm-svn: 21132
 2005-04-07 13:55:53 +00:00
Duraid Madina a7abda3989 teach asmprinter to print s8/s14 operands 
llvm-svn: 21131
 2005-04-07 12:34:36 +00:00
Duraid Madina 8419da8acf codegen immediate forms of add/sub/shift 
llvm-svn: 21130
 2005-04-07 12:33:38 +00:00
Duraid Madina b484f7c55e add immediate forms of add, sub, shift 
llvm-svn: 21129
 2005-04-07 12:32:24 +00:00
Chris Lattner 7d13eae254 Fix a really scary bug that Nate found where we weren't deleting the right 
elements auto of the autoCSE maps.

llvm-svn: 21128
 2005-04-07 00:30:13 +00:00
Nate Begeman d20628ff7d Pattern match bitfield insert, which helps shift long by immediate, among 
other things.

llvm-svn: 21127
 2005-04-06 23:51:40 +00:00
Nate Begeman 505f6b760d Fix some shift bugs 
llvm-svn: 21126
 2005-04-06 22:42:08 +00:00
Alkis Evlogimenos 7ca0947274 Make these 64 bit constants so that this compiles on x86-32 as well. 
llvm-svn: 21125
 2005-04-06 22:09:40 +00:00
Andrew Lenharth 3ea17c6cfe added sdiv by 2^k and works for neg divisors also 
llvm-svn: 21124
 2005-04-06 22:03:13 +00:00
Chris Lattner 747eee2707 Don't make this require loopsimplify. It works BETTER with loop simplify 
but should not require it.

llvm-svn: 21123
 2005-04-06 21:45:00 +00:00
Nate Begeman b067492535 Teach ExpandShift how to handle shifts by a constant. This allows targets 
like PowerPC to codegen long shifts in many fewer instructions.

llvm-svn: 21122
 2005-04-06 21:13:14 +00:00