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Commit Graph

9713 Commits

Author SHA1 Message Date
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
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
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
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
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
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
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
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
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
469244a2b4 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
61215a78fb lowercase instructions, makes diff happier
llvm-svn: 21139
2005-04-07 17:17:48 +00:00
Chris Lattner
05d79f36b1 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
5b31ada26d 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
ea1752ddf5 Transform X-(X+Y) == -Y and X-(Y+X) == -Y
llvm-svn: 21134
2005-04-07 16:15:25 +00:00
Andrew Lenharth
3d1228500d It wasn't happy about this either
llvm-svn: 21133
2005-04-07 14:18:13 +00:00
Andrew Lenharth
ce0dcea720 Yea, it wasn't happy
llvm-svn: 21132
2005-04-07 13:55:53 +00:00
Duraid Madina
ab6e2cfaeb teach asmprinter to print s8/s14 operands
llvm-svn: 21131
2005-04-07 12:34:36 +00:00
Duraid Madina
ed8eb83203 codegen immediate forms of add/sub/shift
llvm-svn: 21130
2005-04-07 12:33:38 +00:00
Duraid Madina
5c4a7b68b3 add immediate forms of add, sub, shift
llvm-svn: 21129
2005-04-07 12:32:24 +00:00
Chris Lattner
22bbc2351e 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
b890f32ac9 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
6c5e4c3bb1 Fix some shift bugs
llvm-svn: 21126
2005-04-06 22:42:08 +00:00
Alkis Evlogimenos
242fe17bc4 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
abf46a4f5e added sdiv by 2^k and works for neg divisors also
llvm-svn: 21124
2005-04-06 22:03:13 +00:00
Chris Lattner
49d166c6b6 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
7898fc8cc8 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
Andrew Lenharth
5c71402202 fix copy/paste errors, and add imm support to SxADDQ and SxSUBQ
llvm-svn: 21121
2005-04-06 20:59:59 +00:00
Chris Lattner
40ee8a062b Fix SingleSource/Regression/C/2005-05-06-LongLongSignedShift.c, we were not
properly sign extending the top of the result of a 64-bit shift right by
a constant > 32.

llvm-svn: 21120
2005-04-06 20:59:35 +00:00
Andrew Lenharth
9f65102f9b Added Nate's div by constant stuff, also scaled operations!
llvm-svn: 21116
2005-04-06 20:25:34 +00:00
Chris Lattner
7c0786dda8 Fix a namespace issue, reported by Vladimir Merzliakov!
llvm-svn: 21115
2005-04-06 19:45:39 +00:00
Duraid Madina
5fa854a7fe steal sampo's div-by-constant-power-of-2 stuff
thanks sampo!!

llvm-svn: 21113
2005-04-06 09:55:17 +00:00
Duraid Madina
1d156293cb add fms instruction
llvm-svn: 21112
2005-04-06 09:54:09 +00:00
Nate Begeman
98251d6a1c Fixed version of optimized integer divide is now fixed. Calculate the
quotient, not the remainder.  Also, make sure to remove the old div operand
from the ExprMap and let SelectExpr insert the new one.

llvm-svn: 21111
2005-04-06 06:44:57 +00:00
Duraid Madina
2db29b8016 lie a bit and say that r1/r12 (GP/SP) _aren't_ callee-save, as we take
care of this ourselves

llvm-svn: 21110
2005-04-06 06:18:36 +00:00
Duraid Madina
62c4de8d62 make sure 'special' registers don't get allocated
llvm-svn: 21109
2005-04-06 06:17:54 +00:00
Chris Lattner
c87ff88efb Add (untested) support for MULHS and MULHU.
llvm-svn: 21107
2005-04-06 04:21:07 +00:00
Chris Lattner
ba7cdbebb1 add signed versions of the extra precision multiplies
llvm-svn: 21106
2005-04-06 04:19:22 +00:00