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Author SHA1 Message Date
Chris Lattner
4a8f6d97ff Implement the isLoadFromStackSlot interface 
llvm-svn: 23387
 2005-09-19 05:23:44 +00:00
Chris Lattner
e40e2d4ec3 Refactor this code a bit and make it more general. This now compiles: 
struct S { unsigned int i : 6, j : 11, k : 15; } b;
void plus2 (unsigned int x) { b.j += x; }

To:

_plus2:
        lis r2, ha16(L_b$non_lazy_ptr)
        lwz r2, lo16(L_b$non_lazy_ptr)(r2)
        lwz r4, 0(r2)
        slwi r3, r3, 6
        add r3, r4, r3
        rlwimi r3, r4, 0, 26, 14
        stw r3, 0(r2)
        blr


instead of:

_plus2:
        lis r2, ha16(L_b$non_lazy_ptr)
        lwz r2, lo16(L_b$non_lazy_ptr)(r2)
        lwz r4, 0(r2)
        rlwinm r5, r4, 26, 21, 31
        add r3, r5, r3
        rlwimi r4, r3, 6, 15, 25
        stw r4, 0(r2)
        blr

by eliminating an 'and'.

I'm pretty sure this is as small as we can go :)

llvm-svn: 23386
 2005-09-18 07:22:02 +00:00
Chris Lattner
024a1c1a46 Compile 
struct S { unsigned int i : 6, j : 11, k : 15; } b;
void plus2 (unsigned int x) {
  b.j += x;
}

to:

plus2:
        mov %EAX, DWORD PTR [b]
        mov %ECX, %EAX
        and %ECX, 131008
        mov %EDX, DWORD PTR [%ESP + 4]
        shl %EDX, 6
        add %EDX, %ECX
        and %EDX, 131008
        and %EAX, -131009
        or %EDX, %EAX
        mov DWORD PTR [b], %EDX
        ret

instead of:

plus2:
        mov %EAX, DWORD PTR [b]
        mov %ECX, %EAX
        shr %ECX, 6
        and %ECX, 2047
        add %ECX, DWORD PTR [%ESP + 4]
        shl %ECX, 6
        and %ECX, 131008
        and %EAX, -131009
        or %ECX, %EAX
        mov DWORD PTR [b], %ECX
        ret

llvm-svn: 23385
 2005-09-18 06:30:59 +00:00
Chris Lattner
3cd5e466ee Generalize this transform, using MaskedValueIsZero, allowing us to compile: 
struct S { unsigned int i : 6, j : 11, k : 15; } b;
void plus3 (unsigned int x) { b.k += x; }

To:

plus3:
        mov %EAX, DWORD PTR [%ESP + 4]
        shl %EAX, 17
        add DWORD PTR [b], %EAX
        ret

instead of:

plus3:
        mov %EAX, DWORD PTR [%ESP + 4]
        shl %EAX, 17
        mov %ECX, DWORD PTR [b]
        add %EAX, %ECX
        and %EAX, -131072
        and %ECX, 131071
        or %ECX, %EAX
        mov DWORD PTR [b], %ECX
        ret

llvm-svn: 23384
 2005-09-18 06:02:59 +00:00
Chris Lattner
b70b011734 fix typeo 
llvm-svn: 23383
 2005-09-18 05:25:20 +00:00
Chris Lattner
7fda14c978 Remove unintentionally committed code 
llvm-svn: 23382
 2005-09-18 05:12:51 +00:00
Chris Lattner
ae35713f00 implement shift.ll:test25. This compiles: 
struct S { unsigned int i : 6, j : 11, k : 15; } b;
void plus3 (unsigned int x) {
  b.k += x;
}

to:

_plus3:
        lis r2, ha16(L_b$non_lazy_ptr)
        lwz r2, lo16(L_b$non_lazy_ptr)(r2)
        lwz r3, 0(r2)
        rlwinm r4, r3, 0, 0, 14
        add r4, r4, r3
        rlwimi r4, r3, 0, 15, 31
        stw r4, 0(r2)
        blr

instead of:

_plus3:
        lis r2, ha16(L_b$non_lazy_ptr)
        lwz r2, lo16(L_b$non_lazy_ptr)(r2)
        lwz r4, 0(r2)
        srwi r5, r4, 17
        add r3, r5, r3
        slwi r3, r3, 17
        rlwimi r3, r4, 0, 15, 31
        stw r3, 0(r2)
        blr

llvm-svn: 23381
 2005-09-18 05:12:10 +00:00
Chris Lattner
7e94dfdc90 new testcase 
llvm-svn: 23380
 2005-09-18 05:10:39 +00:00
Chris Lattner
fa22870351 Implement add.ll:test29. Codegening: 
struct S { unsigned int i : 6, j : 11, k : 15; } b;
void plus1 (unsigned int x) {
  b.i += x;
}

as:
_plus1:
        lis r2, ha16(L_b$non_lazy_ptr)
        lwz r2, lo16(L_b$non_lazy_ptr)(r2)
        lwz r4, 0(r2)
        add r3, r4, r3
        rlwimi r3, r4, 0, 0, 25
        stw r3, 0(r2)
        blr

instead of:

_plus1:
        lis r2, ha16(L_b$non_lazy_ptr)
        lwz r2, lo16(L_b$non_lazy_ptr)(r2)
        lwz r4, 0(r2)
        rlwinm r5, r4, 0, 26, 31
        add r3, r5, r3
        rlwimi r3, r4, 0, 0, 25
        stw r3, 0(r2)
        blr

llvm-svn: 23379
 2005-09-18 04:24:45 +00:00
Chris Lattner
dd10722054 new testcase 
llvm-svn: 23378
 2005-09-18 04:22:59 +00:00
Chris Lattner
c96a222019 remove debug output 
llvm-svn: 23377
 2005-09-18 03:50:25 +00:00
Chris Lattner
1466ade38b Implement or.ll:test21. This teaches instcombine to be able to turn this: 
struct {
   unsigned int bit0:1;
   unsigned int ubyte:31;
} sdata;

void foo() {
  sdata.ubyte++;
}

into this:

foo:
        add DWORD PTR [sdata], 2
        ret

instead of this:

foo:
        mov %EAX, DWORD PTR [sdata]
        mov %ECX, %EAX
        add %ECX, 2
        and %ECX, -2
        and %EAX, 1
        or %EAX, %ECX
        mov DWORD PTR [sdata], %EAX
        ret

llvm-svn: 23376
 2005-09-18 03:42:07 +00:00
Chris Lattner
c6c62e7864 new testcase 
llvm-svn: 23375
 2005-09-18 03:39:02 +00:00
Chris Lattner
45d4ddd903 Implement hook for ppc 
llvm-svn: 23374
 2005-09-17 01:03:26 +00:00
Chris Lattner
e8cb4e7356 add a new callback 
llvm-svn: 23373
 2005-09-17 01:02:45 +00:00
Nate Begeman
d733cf7e8b More DAG combining. Still need the branch instructions, and select_cc 
llvm-svn: 23371
 2005-09-16 00:54:12 +00:00
Chris Lattner
2e3569b604 Fix a minor bug, add comments 
llvm-svn: 23370
 2005-09-16 00:29:46 +00:00
Chris Lattner
4c1ec1c784 teach the type inference code how to infer types for instructions and node 
xforms.  Run type inference on result patterns, so we always have fully typed
results (and to catch errors in .td files).

llvm-svn: 23369
 2005-09-15 22:23:50 +00:00
Chris Lattner
07b63eafa1 put instructions into a map instead of a vector for quick lookup 
llvm-svn: 23368
 2005-09-15 21:57:35 +00:00
Chris Lattner
335614b54a when parsing instructions remember information about the types taken and 
returned.

llvm-svn: 23367
 2005-09-15 21:51:12 +00:00
Chris Lattner
aa57457e20 disable this for now 
llvm-svn: 23366
 2005-09-15 21:44:00 +00:00
Chris Lattner
66c08682d9 Start parsing "Pattern" nodes 
llvm-svn: 23365
 2005-09-15 21:42:00 +00:00
Chris Lattner
fe7a70834b rename a couple of methods, add structure for pattern parsing 
llvm-svn: 23364
 2005-09-15 02:38:02 +00:00
Chris Lattner
ab6886a31d Verify that xform functions only occur in logical places 
llvm-svn: 23363
 2005-09-14 23:05:13 +00:00
Chris Lattner
6f94c802a2 Promote xform fns to be explicit nodes in result patterns, and clean off 
predicates since they will have already matched at this point.

llvm-svn: 23362
 2005-09-14 23:01:59 +00:00
Chris Lattner
57cae81b5e start building the instruction dest pattern correctly. Change the xform 
functions to preserve the Record for the xform instead of making it into a
function name.

llvm-svn: 23361
 2005-09-14 22:55:26 +00:00
Chris Lattner
a6a0d51065 catch unnamed inputs 
llvm-svn: 23360
 2005-09-14 22:06:36 +00:00
Chris Lattner
f749a0ef7c check that there are no unexpected operands 
llvm-svn: 23359
 2005-09-14 21:59:34 +00:00
Chris Lattner
9c196b02fa force all instruction operands to be named. 
llvm-svn: 23358
 2005-09-14 21:13:50 +00:00
Chris Lattner
cd5eeef9ee Give all operands names 
llvm-svn: 23357
 2005-09-14 21:11:13 +00:00
Chris Lattner
54139f0b83 give all operands names 
llvm-svn: 23356
 2005-09-14 21:10:24 +00:00
Chris Lattner
c19f24f3d7 Check that operands have unique names. REJECT instructions with broken operand 
lists: only don't parse them if they are entirely missing (sparcv9).

llvm-svn: 23355
 2005-09-14 21:05:02 +00:00
Chris Lattner
3cbcb9f5d6 fix a broke range check 
llvm-svn: 23354
 2005-09-14 21:04:12 +00:00
Chris Lattner
a5ba887c02 Parse significantly more of the instruction pattern, now collecting and 
verifying information about the operands.

llvm-svn: 23353
 2005-09-14 20:53:42 +00:00
Chris Lattner
3e8d9d8d08 Fix some issues exposed by more testing. XORIS had the wrong operands 
specified.  The various *imm operands defined by PPC are really all i32,
even though the actual immediate is restricted to a smaller value in it.

llvm-svn: 23352
 2005-09-14 20:53:05 +00:00
Chris Lattner
901ddab7b1 Verify that set destinations occur first in the instruction operand list. 
llvm-svn: 23351
 2005-09-14 18:19:25 +00:00
Chris Lattner
b97354c974 Fix some bugs noticed by new checking code 
llvm-svn: 23350
 2005-09-14 18:18:39 +00:00
Chris Lattner
76f1dae1af add an accessor 
llvm-svn: 23349
 2005-09-14 18:02:53 +00:00
Chris Lattner
c7fe78d9a1 Fix the regression last night compiling povray 
llvm-svn: 23348
 2005-09-14 17:32:56 +00:00
Chris Lattner
fa644b391f fix a major regression from my patch this afternoon 
llvm-svn: 23347
 2005-09-14 06:06:45 +00:00
Chris Lattner
72cfebc71b remove some code that isn't ready for prime time 
llvm-svn: 23346
 2005-09-14 06:03:10 +00:00
Chris Lattner
c4ae94aa32 Switch to a slightly more structured representation for instructions 
llvm-svn: 23345
 2005-09-14 04:03:16 +00:00
Chris Lattner
77cc161bd5 Add some more checking/verification code 
llvm-svn: 23344
 2005-09-14 02:11:12 +00:00
Chris Lattner
9ab561788e start parsing instructions into patterns, start doing many more checks of 
'set's.

llvm-svn: 23343
 2005-09-14 00:09:24 +00:00
Chris Lattner
c7fb54af0b we don't need this proto any longer 
llvm-svn: 23342
 2005-09-13 22:05:21 +00:00
Chris Lattner
e2591652a2 don't emit the namespace inside the class! 
llvm-svn: 23341
 2005-09-13 22:05:02 +00:00
Chris Lattner
1da656efd4 Emit code suitable for emission into the ISel class, allowing us to use/define 
methods.

llvm-svn: 23340
 2005-09-13 22:03:37 +00:00
Chris Lattner
ffab20ddeb move the #include for the generated code into the isel class body so we 
can use/define class methods

llvm-svn: 23339
 2005-09-13 22:03:06 +00:00
Chris Lattner
9bb7fff501 continue xform function parsing 
llvm-svn: 23338
 2005-09-13 21:59:15 +00:00
Chris Lattner
abc740453c Start parsing node transformation information 
llvm-svn: 23337
 2005-09-13 21:51:00 +00:00