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Author SHA1 Message Date
Chris Lattner
66c4fffa4c load (x|y) -> load (x+y) iff x and y have no common bits. 
llvm-svn: 26449
 2006-03-01 07:13:56 +00:00
Chris Lattner
caec0d887c add a note 
llvm-svn: 26448
 2006-03-01 06:36:20 +00:00
Chris Lattner
137c02aa60 Compile this: 
void foo(float a, int *b) { *b = a; }

to this:

_foo:
        fctiwz f0, f1
        stfiwx f0, 0, r4
        blr

instead of this:

_foo:
        fctiwz f0, f1
        stfd f0, -8(r1)
        lwz r2, -4(r1)
        stw r2, 0(r4)
        blr

This implements CodeGen/PowerPC/stfiwx.ll, and also incidentally does the
right thing for GCC bugzilla 26505.

llvm-svn: 26447
 2006-03-01 05:50:56 +00:00
Chris Lattner
f551414303 new testcase. These functions shouldn't touch the stack if stfiwx use 
is enabled.

llvm-svn: 26446
 2006-03-01 05:49:05 +00:00
Chris Lattner
6ba976b557 Use a target-specific dag-combine to implement CodeGen/PowerPC/fp-int-fp.ll. 
llvm-svn: 26445
 2006-03-01 04:57:39 +00:00
Chris Lattner
b0531950b1 new testcase. There should be no accesses to the stack for these functions. 
llvm-svn: 26444
 2006-03-01 04:56:33 +00:00
Chris Lattner
6434a21c21 Add support for target-specific dag combines 
llvm-svn: 26443
 2006-03-01 04:53:38 +00:00
Chris Lattner
40501a50fe Add interfaces for targets to provide target-specific dag combiner optimizations. 
llvm-svn: 26442
 2006-03-01 04:52:55 +00:00
Chris Lattner
f571b8c5dd Add a new AddToWorkList method, start using it 
llvm-svn: 26441
 2006-03-01 04:03:14 +00:00
Chris Lattner
7ba1c5e025 Pull shifts by a constant through multiplies (a form of reassociation), 
implementing Regression/CodeGen/X86/mul-shift-reassoc.ll

llvm-svn: 26440
 2006-03-01 03:44:24 +00:00
Chris Lattner
d4f7c91dd7 new testcase 
llvm-svn: 26439
 2006-03-01 03:43:38 +00:00
Evan Cheng
ebe1f272b7 Vector op lowering. 
llvm-svn: 26438
 2006-03-01 01:11:20 +00:00
Evan Cheng
9539ab3ecc New vector type v2f32. 
llvm-svn: 26437
 2006-03-01 01:10:52 +00:00
Evan Cheng
d8b92e04a2 Vector ops lowering. 
llvm-svn: 26436
 2006-03-01 01:09:54 +00:00
Evan Cheng
44412bbde0 New type v2f32. 
llvm-svn: 26435
 2006-03-01 01:06:22 +00:00
Evan Cheng
b8a44ab1dd Missing a cast previously. 
llvm-svn: 26434
 2006-03-01 00:58:54 +00:00
Evan Cheng
c8110cdf46 - Added v2f32, not used by any target currently. Only for testing purpose. 
- Minor bug fix.

llvm-svn: 26433
 2006-03-01 00:55:26 +00:00
Evan Cheng
2cbf9d93d3 - Added VConstant as an abstract version of ConstantVec. 
- All abstrct vector nodes must have # of elements and element type as their
first two operands.

llvm-svn: 26432
 2006-03-01 00:51:13 +00:00
Evan Cheng
b02cde9c1f Add a test case for left shift by 1. We should not be using lea for this. 
llvm-svn: 26431
 2006-02-28 23:57:45 +00:00
Evan Cheng
e5ae39621b Another entry. 
llvm-svn: 26430
 2006-02-28 23:38:49 +00:00
Evan Cheng
fab8a53944 Don't match x << 1 to LEAL. It's better to emit x + x. 
llvm-svn: 26429
 2006-02-28 21:13:57 +00:00
Jim Laskey
090da116cc Add const, volatile, restrict support. 
Add array of debug descriptor support.

llvm-svn: 26428
 2006-02-28 20:15:07 +00:00
Chris Lattner
74e3523663 Fix a regression in a patch from a couple of days ago. This fixes 
Transforms/InstCombine/2006-02-28-Crash.ll

llvm-svn: 26427
 2006-02-28 19:47:20 +00:00
Chris Lattner
591bae524a new testcase 
llvm-svn: 26426
 2006-02-28 19:46:56 +00:00
Chris Lattner
d516e254be 8 spaces -> tab. Reported by Wink Saville 
llvm-svn: 26425
 2006-02-28 19:12:58 +00:00
Chris Lattner
bae1b3cab9 evan's recent x86 isel improvements have fixed this, though not in the way 
originally envisioned :)

llvm-svn: 26422
 2006-02-28 16:39:56 +00:00
Chris Lattner
9f70a7924d Add a subtarget feature for the stfiwx instruction. I know the G5 has it, 
but I don't know what other PPC impls do.  If someone could update the proc
table, I would appreciate it :)

llvm-svn: 26421
 2006-02-28 07:08:22 +00:00
Chris Lattner
ea47cfde74 new testcases 
llvm-svn: 26420
 2006-02-28 06:54:19 +00:00
Chris Lattner
3aa1cd759e Compile: 
unsigned foo4(unsigned short *P) { return *P & 255; }
unsigned foo5(short *P) { return *P & 255; }

to:

_foo4:
        lbz r3,1(r3)
        blr
_foo5:
        lbz r3,1(r3)
        blr

not:

_foo4:
        lhz r2, 0(r3)
        rlwinm r3, r2, 0, 24, 31
        blr
_foo5:
        lhz r2, 0(r3)
        rlwinm r3, r2, 0, 24, 31
        blr

llvm-svn: 26419
 2006-02-28 06:49:37 +00:00
Chris Lattner
866634d77f remove implemented item 
llvm-svn: 26418
 2006-02-28 06:36:04 +00:00
Chris Lattner
24a22066c4 Fold "and (LOAD P), 255" -> zextload. This allows us to compile: 
unsigned foo3(unsigned *P) { return *P & 255; }
as:
_foo3:
        lbz r3, 3(r3)
        blr

instead of:

_foo3:
        lwz r2, 0(r3)
        rlwinm r3, r2, 0, 24, 31
        blr

and:

unsigned short foo2(float a) { return a; }

as:
_foo2:
        fctiwz f0, f1
        stfd f0, -8(r1)
        lhz r3, -2(r1)
        blr

instead of:

_foo2:
        fctiwz f0, f1
        stfd f0, -8(r1)
        lwz r2, -4(r1)
        rlwinm r3, r2, 0, 16, 31
        blr

llvm-svn: 26417
 2006-02-28 06:35:35 +00:00
Chris Lattner
152201257d fold (sra (sra x, c1), c2) -> (sra x, c1+c2) 
llvm-svn: 26416
 2006-02-28 06:23:04 +00:00
Chris Lattner
684fc3dc9d Implement rem.ll:test[7-9] and PR712 
llvm-svn: 26415
 2006-02-28 05:49:21 +00:00
Chris Lattner
ca2cb47ad3 new testcases for PR712 
llvm-svn: 26414
 2006-02-28 05:48:56 +00:00
Chris Lattner
63647f5028 Simplify some code now that the RHS of a rem can't be 0 
llvm-svn: 26413
 2006-02-28 05:40:55 +00:00
Chris Lattner
8f416718b6 new testcase 
llvm-svn: 26412
 2006-02-28 05:30:48 +00:00
Chris Lattner
3b9fc06289 Rearrange some code, fold "rem X, 0", implementing rem.ll:test6 
llvm-svn: 26411
 2006-02-28 05:30:45 +00:00
Chris Lattner
a451b5ffd4 Add support for output memory constraints. 
llvm-svn: 26410
 2006-02-27 23:45:39 +00:00
Jim Laskey
cb47e213c0 Qualify dwarf namespace inside llvm namespace. 
llvm-svn: 26409
 2006-02-27 22:37:23 +00:00
Nate Begeman
56a4dafd8d readme updates 
llvm-svn: 26405
 2006-02-27 22:08:36 +00:00
Jim Laskey
34708479e7 Partial enabling of functions. 
llvm-svn: 26404
 2006-02-27 20:37:42 +00:00
Chris Lattner
da5029790a Don't print constant initializers, they may span lines now. 
llvm-svn: 26403
 2006-02-27 20:09:23 +00:00
Jim Laskey
618fe7bec1 Supporting multiple compile units. 
llvm-svn: 26402
 2006-02-27 17:27:12 +00:00
Jim Laskey
939d2084ad Re-orging file. 
llvm-svn: 26401
 2006-02-27 12:43:29 +00:00
Jim Laskey
64fdd3498f Pretty print large struct constants. 
llvm-svn: 26400
 2006-02-27 10:33:53 +00:00
Jim Laskey
98bb365444 Removed dependency on how operands are printed (want multi-line.) 
llvm-svn: 26399
 2006-02-27 10:29:04 +00:00
Chris Lattner
c306a9bed9 Use -emit-llvm -S to get .ll file output from llvm-gcc 
llvm-svn: 26397
 2006-02-27 05:39:00 +00:00
Chris Lattner
792bfd8f28 Merge two almost-identical pieces of code. 
Make this code more powerful by using ComputeMaskedBits instead of looking
for an AND operand.  This lets us fold this:

int %test23(int %a) {
        %tmp.1 = and int %a, 1
        %tmp.2 = seteq int %tmp.1, 0
        %tmp.3 = cast bool %tmp.2 to int  ;; xor tmp1, 1
        ret int %tmp.3
}

into: xor (and a, 1), 1
llvm-svn: 26396
 2006-02-27 02:38:23 +00:00
Chris Lattner
91dedad737 new testcases 
llvm-svn: 26395
 2006-02-27 02:36:19 +00:00
Chris Lattner
c27bba037b Fold (A^B) == A -> B == 0 
and  (A-B) == A  ->  B == 0

llvm-svn: 26394
 2006-02-27 01:44:11 +00:00