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Author SHA1 Message Date
Chris Lattner
8337a1050d implement isStoreToStackSlot for PPC 
llvm-svn: 25914
 2006-02-02 20:16:12 +00:00
Chris Lattner
15cb732cd7 Move isLoadFrom/StoreToStackSlot from MRegisterInfo to TargetInstrInfo,a far more logical place. Other methods should also be moved if anyoneis interested. :) 
llvm-svn: 25913
 2006-02-02 20:12:32 +00:00
Chris Lattner
6684ba101f Move isLoadFrom/StoreToStackSlot from MRegisterInfo to TargetInstrInfo, 
a far more logical place.  Other methods should also be moved if anyone
is interested. :)

llvm-svn: 25912
 2006-02-02 20:11:55 +00:00
Chris Lattner
10f9a9daa5 implement isStoreToStackSlot 
llvm-svn: 25911
 2006-02-02 20:00:41 +00:00
Chris Lattner
876bbd4faa add a method 
llvm-svn: 25910
 2006-02-02 19:57:16 +00:00
Chris Lattner
3cbf670f57 add a new isStoreToStackSlot method 
llvm-svn: 25909
 2006-02-02 19:55:29 +00:00
Chris Lattner
ebf20d47ac more notes 
llvm-svn: 25908
 2006-02-02 19:43:28 +00:00
Chris Lattner
8a8c101989 add a note, I have no idea how important this is. 
llvm-svn: 25907
 2006-02-02 19:16:34 +00:00
Chris Lattner
95fe9f5df2 %fcc is not an alias for %fcc0 
llvm-svn: 25906
 2006-02-02 08:02:20 +00:00
Chris Lattner
f5c935f882 correct an opcode 
llvm-svn: 25905
 2006-02-02 07:56:15 +00:00
Chris Lattner
c434ee61a3 new example 
llvm-svn: 25903
 2006-02-02 07:37:11 +00:00
Nate Begeman
dd4acf9710 Update the README 
llvm-svn: 25902
 2006-02-02 07:27:56 +00:00
Chris Lattner
456711ae45 Turn any_extend nodes into zero_extend nodes when it allows us to remove an 
and instruction.  This allows us to compile stuff like this:

bool %X(int %X) {
        %Y = add int %X, 14
        %Z = setne int %Y, 12345
        ret bool %Z
}

to this:

_X:
        cmpl $12331, 4(%esp)
        setne %al
        movzbl %al, %eax
        ret

instead of this:

_X:
        cmpl $12331, 4(%esp)
        setne %al
        movzbl %al, %eax
        andl $1, %eax
        ret

This occurs quite a bit with the X86 backend.  For example, 25 times in
lambda, 30 times in 177.mesa, 14 times in galgel,  70 times in fma3d,
25 times in vpr, several hundred times in gcc, ~45 times in crafty,
~60 times in parser, ~140 times in eon, 110 times in perlbmk, 55 on gap,
16 times on bzip2, 14 times on twolf, and 1-2 times in many other SPEC2K
programs.

llvm-svn: 25901
 2006-02-02 07:17:31 +00:00
Chris Lattner
c2ec404142 Implement MaskedValueIsZero for ANY_EXTEND nodes 
llvm-svn: 25900
 2006-02-02 06:43:15 +00:00
Chris Lattner
32762f6c01 implemented, testcase here: test/Regression/CodeGen/X86/compare-add.ll 
llvm-svn: 25899
 2006-02-02 06:36:48 +00:00
Chris Lattner
8f4d73f3da add two dag combines: 
(C1-X) == C2 --> X == C1-C2
(X+C1) == C2 --> X == C2-C1

This allows us to compile this:

bool %X(int %X) {
        %Y = add int %X, 14
        %Z = setne int %Y, 12345
        ret bool %Z
}

into this:

_X:
        cmpl $12331, 4(%esp)
        setne %al
        movzbl %al, %eax
        andl $1, %eax
        ret

not this:

_X:
        movl $14, %eax
        addl 4(%esp), %eax
        cmpl $12345, %eax
        setne %al
        movzbl %al, %eax
        andl $1, %eax
        ret

Testcase here: Regression/CodeGen/X86/compare-add.ll

nukage of the and coming up next.

llvm-svn: 25898
 2006-02-02 06:36:13 +00:00
Chris Lattner
5523fc1a1f new testcase 
llvm-svn: 25897
 2006-02-02 06:35:38 +00:00
Evan Cheng
94b1244255 Update. 
llvm-svn: 25896
 2006-02-02 02:40:17 +00:00
Chris Lattner
f3bfec6117 make -debug output less newliney 
llvm-svn: 25895
 2006-02-02 00:38:08 +00:00
Evan Cheng
d432c17927 Fix a erroneous comment. 
llvm-svn: 25894
 2006-02-02 00:28:23 +00:00
Chris Lattner
e35694c0bf Implement matching constraints. We can now say things like this: 
%C = call int asm "xyz $0, $1, $2, $3", "=r,r,r,0"(int %A, int %B, int 4)

and get:

xyz r2, r3, r4, r2

note that the r2's are pinned together.  Yaay for 2-address instructions.

2342 ----------------------------------------------------------------------

llvm-svn: 25893
 2006-02-02 00:25:23 +00:00
Chris Lattner
a8429e5f11 validate matching constraints and remember when we see them. 
llvm-svn: 25892
 2006-02-02 00:23:53 +00:00
Chris Lattner
d3e4f27b9f add an instance var and argument. 
llvm-svn: 25891
 2006-02-02 00:23:12 +00:00
Chris Lattner
26451058cb more notes 
llvm-svn: 25890
 2006-02-01 23:38:08 +00:00
Evan Cheng
8c988b64ae Tell codegen MOVAPSrr and MOVAPDrr are copies. 
llvm-svn: 25889
 2006-02-01 23:03:16 +00:00
Evan Cheng
adc4966129 Added SSE entries to foldMemoryOperand(). 
llvm-svn: 25888
 2006-02-01 23:02:25 +00:00
Evan Cheng
b78bb375c2 Rearrange code to my liking. :) 
llvm-svn: 25887
 2006-02-01 23:01:57 +00:00
Chris Lattner
41a35db65f Implement smart printing of inline asm strings, handling variants and 
substituted operands.  For this testcase:

int %test(int %A, int %B) {
  %C = call int asm "xyz $0, $1, $2", "=r,r,r"(int %A, int %B)
  ret int %C
}

we now emit:

_test:
        or r2, r3, r3
        or r3, r4, r4
        xyz r2, r2, r3  ;; look here
        or r3, r2, r2
        blr

... note the substituted operands. :)

llvm-svn: 25886
 2006-02-01 22:41:11 +00:00
Chris Lattner
c97cf51e02 add a new PrintAsmOperand method, move some stuff around for ease of reading. 
llvm-svn: 25885
 2006-02-01 22:39:30 +00:00
Chris Lattner
d202c4d3cc add a method 
llvm-svn: 25884
 2006-02-01 22:38:46 +00:00
Chris Lattner
8004ba8a2b another note 
llvm-svn: 25883
 2006-02-01 21:44:48 +00:00
Andrew Lenharth
9812806d03 Add immediate forms of cmov and remove some cruft 
llvm-svn: 25882
 2006-02-01 19:37:33 +00:00
Andrew Lenharth
05f4a19bbe test cmov immediate form 
llvm-svn: 25881
 2006-02-01 19:36:52 +00:00
Chris Lattner
c9a001a67d add a note, ya knoe 
llvm-svn: 25880
 2006-02-01 19:12:23 +00:00
Nate Begeman
e74a2db0f0 *** empty log message *** 
llvm-svn: 25879
 2006-02-01 19:05:15 +00:00
Chris Lattner
9665c2d76f Implement simple register assignment for inline asms. This allows us to compile: 
int %test(int %A, int %B) {
  %C = call int asm "xyz $0, $1, $2", "=r,r,r"(int %A, int %B)
  ret int %C
}

into:

 (0x8906130, LLVM BB @0x8902220):
        %r2 = OR4 %r3, %r3
        %r3 = OR4 %r4, %r4
        INLINEASM <es:xyz $0, $1, $2>, %r2<def>, %r2, %r3
        %r3 = OR4 %r2, %r2
        BLR

which asmprints as:

_test:
        or r2, r3, r3
        or r3, r4, r4
        xyz $0, $1, $2      ;; need to print the operands now :)
        or r3, r2, r2
        blr

llvm-svn: 25878
 2006-02-01 18:59:47 +00:00
Chris Lattner
4042f63422 Finegrainify namespacification 
llvm-svn: 25877
 2006-02-01 18:10:56 +00:00
Chris Lattner
821f93a659 add a note 
llvm-svn: 25876
 2006-02-01 17:54:23 +00:00
Nate Begeman
0be60963bd Fix some of the stuff in the PPC README file, and clean up legalization 
of the SELECT_CC, BR_CC, and BRTWOWAY_CC nodes.

llvm-svn: 25875
 2006-02-01 07:19:44 +00:00
Chris Lattner
d2fb7bf108 add a note, I'll take care of this after nate commits his big patch 
llvm-svn: 25873
 2006-02-01 06:40:32 +00:00
Evan Cheng
ef93bdc0cf - Use xor to clear integer registers (set R, 0). 
- Added a new format for instructions where the source register is implied
  and it is same as the destination register. Used for pseudo instructions
  that clear the destination register.

llvm-svn: 25872
 2006-02-01 06:13:50 +00:00
Evan Cheng
6523b2de76 Remove another entry. 
llvm-svn: 25871
 2006-02-01 06:08:48 +00:00
Evan Cheng
efdfb534a7 If a pattern's root node is a constant, its size should be 3 rather than 2. 
llvm-svn: 25870
 2006-02-01 06:06:31 +00:00
Jeff Cohen
8b429890aa Fix VC++ compilation error. 
llvm-svn: 25869
 2006-02-01 04:37:04 +00:00
Chris Lattner
da8766b370 new testcase for the 'ret double folding with load' opzn 
llvm-svn: 25868
 2006-02-01 01:45:02 +00:00
Chris Lattner
0e7d439232 Another regression from the pattern isel 
llvm-svn: 25867
 2006-02-01 01:44:25 +00:00
Chris Lattner
fa15301572 Beef up the interface to inline asm constraint parsing, making it more general, useful, and easier to use. 
llvm-svn: 25866
 2006-02-01 01:29:47 +00:00
Chris Lattner
5549a10792 adjust to changes in InlineAsm interface. Fix a few minor bugs. 
llvm-svn: 25865
 2006-02-01 01:28:23 +00:00
Chris Lattner
fa737604c5 Beef up the interface to inline asm constraint parsing, making it more 
general, useful, and easier to use.

llvm-svn: 25864
 2006-02-01 01:27:37 +00:00
Evan Cheng
27738f635e Return's chain should be matching either the chain produced by the 
value or the chain going into the load.

llvm-svn: 25863
 2006-02-01 01:19:32 +00:00