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5977 Commits

Author SHA1 Message Date
Brian Gaeke
3e29bc5a19 Support loading arguments from %I0...%I5 into virtual registers in 
function prologues, and fix an off-by-one in visitCallInst that was
putting call args into the wrong registers.

llvm-svn: 12757
 2004-04-07 17:04:09 +00:00
Brian Gaeke
3eb6c1d3ae It's setting up the call args right now, but on the callee side, it's 
trying to get incoming args off the stack, instead of the %i0...%i6 regs,
which is wrong.

llvm-svn: 12756
 2004-04-07 16:41:22 +00:00
Chris Lattner
cb6744360c Fix a bug Brian found. 
llvm-svn: 12754
 2004-04-07 16:16:11 +00:00
Chris Lattner
37a392dc52 This is a start on handling setcc instructions. As the comment notes, we 
have no good way of handling this until the code generator is improved.
We should probably just emit V9 instructions in the meantime.

llvm-svn: 12745
 2004-04-07 05:04:51 +00:00
Chris Lattner
bb67452b4b andd subcc instructions which is used to create the 'cmp' pseudo instruction 
llvm-svn: 12744
 2004-04-07 05:04:01 +00:00
Chris Lattner
2f63fbf9d5 Avoid emitting an extra copy on each 32-bit operation 
llvm-svn: 12743
 2004-04-07 04:36:53 +00:00
Brian Gaeke
d98edc771e Make generation of stack-slot loads and copies less ugly. 
llvm-svn: 12742
 2004-04-07 04:29:14 +00:00
Brian Gaeke
90c53bcbda Fix bug in printing loads. 
llvm-svn: 12741
 2004-04-07 04:29:03 +00:00
Chris Lattner
be45dbdaf8 Add support for shift instructions, wrap some long lines 
llvm-svn: 12740
 2004-04-07 04:27:16 +00:00
Chris Lattner
ded6e64b53 Fix encoding of existing shift instructions, add rr shifts 
llvm-svn: 12739
 2004-04-07 04:26:57 +00:00
Chris Lattner
13546cb380 Add a bunch more instructions 
llvm-svn: 12737
 2004-04-07 04:06:46 +00:00
Chris Lattner
a58da750eb Merge my changes with brians 
llvm-svn: 12736
 2004-04-07 04:05:49 +00:00
Brian Gaeke
ece16e53c4 Add in some things I forgot, which Chris helpfully reminded me of... 
llvm-svn: 12735
 2004-04-07 04:05:12 +00:00
Brian Gaeke
4b90f62e6d Add support for the "Y" register, used by MUL & DIV. 
llvm-svn: 12734
 2004-04-07 04:01:11 +00:00
Brian Gaeke
8651efab54 Add UDIV, SDIV, and a few variants of WR. 
llvm-svn: 12733
 2004-04-07 04:01:00 +00:00
Brian Gaeke
0d35bd3ca9 Preliminary support for getting 64-bit integer constants into registers. 
Preliminary support for division. It's gross because you have to initialize
the "Y" register, which is the top 32 bits of the thing you're dividing.

llvm-svn: 12732
 2004-04-07 04:00:49 +00:00
Brian Gaeke
2aa3485241 Prune unnecessary #includes 
llvm-svn: 12731
 2004-04-06 23:25:07 +00:00
Brian Gaeke
c59ef116a2 Simple delay slot filler pass. 
llvm-svn: 12730
 2004-04-06 23:21:45 +00:00
Brian Gaeke
38ad8d1aea Add references to delay slot filler pass. 
Fill in addPassesToJITCompile method.

llvm-svn: 12729
 2004-04-06 23:21:24 +00:00
Brian Gaeke
0ee6eb1c1a First attempt at handling frame index elimination. 
llvm-svn: 12728
 2004-04-06 22:10:22 +00:00
Brian Gaeke
b7f86edbf3 First attempt at special-casing printing of [%reg + offset] for 
ld/st instructions - doesn't seem to work yet, but I think it's
just a typo or something somewhere.

llvm-svn: 12727
 2004-04-06 22:10:11 +00:00
Brian Gaeke
74d26802a4 Delete reference to "the Mach-O Runtime ABI". 
llvm-svn: 12726
 2004-04-06 22:09:59 +00:00
Brian Gaeke
da22005285 Deal with call return values. 
Don't put NOPs in delay slots at all. We'll have a fix-up pass later.

llvm-svn: 12725
 2004-04-06 22:09:23 +00:00
Jakub Staszak
fc0d9bb7e9 file based off InstSelectSimple.cpp, slowly being replaced by generated code from the really simple X86 instruction selector tablegen backend 
llvm-svn: 12715
 2004-04-06 19:35:17 +00:00
Jakub Staszak
06dc0add14 Tablgen files for really simple instruction selector 
llvm-svn: 12714
 2004-04-06 19:34:00 +00:00
Chris Lattner
3808778190 Fix PR313: [x86] JIT miscompiles unsigned short to floating point 
llvm-svn: 12711
 2004-04-06 19:29:36 +00:00
Chris Lattner
993d6106c7 Fix incorrect encoding of some ADC and SBB instuctions 
llvm-svn: 12710
 2004-04-06 19:20:32 +00:00
Chris Lattner
54e93df11a Fix a minor bug in previous checking 
Enable folding of long seteq/setne comparisons into branches and select instructions
Implement unfolded long relational comparisons against a constants a bit more efficiently

Folding comparisons changes code that looks like this:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %ECX, %EAX
        or %ECX, %EDX
        sete %CL
        test %CL, %CL
        je .LBB2 # PC rel: F

into code that looks like this:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %ECX, %EAX
        or %ECX, %EDX
        jne .LBB2 # PC rel: F

This speeds up 186.crafty by 6% with llc-ls.

llvm-svn: 12702
 2004-04-06 17:34:50 +00:00
Chris Lattner
2d9b28ac0b Improve codegen of long == and != comparisons against constants. Before, 
comparing a long against zero got us this:

        sub %ESP, 8
        mov DWORD PTR [%ESP + 4], %ESI
        mov DWORD PTR [%ESP], %EDI
        mov %EAX, DWORD PTR [%ESP + 12]
        mov %EDX, DWORD PTR [%ESP + 16]
        mov %ECX, 0
        mov %ESI, 0
        mov %EDI, %EAX
        xor %EDI, %ECX
        mov %ECX, %EDX
        xor %ECX, %ESI
        or %EDI, %ECX
        sete %CL
        test %CL, %CL
        je .LBB2 # PC rel: F

Now it gets us this:

        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %ECX, %EAX
        or %ECX, %EDX
        sete %CL
        test %CL, %CL
        je .LBB2 # PC rel: F

llvm-svn: 12696
 2004-04-06 16:02:27 +00:00
Chris Lattner
fd7b570dff Handle various other important cases of multiplying a long constant immediate. For 
example, multiplying X*(1 + (1LL << 32)) now produces:

test:
        mov %ECX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %EAX, %ECX
        add %EDX, %ECX
        ret

[[[Note to Alkis: why isn't linear scan generating this code??  This might be a
 problem with your intervals being too conservative:

test:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        add %EDX, %EAX
        ret

end note]]]

Whereas GCC produces this:

T:
        sub     %esp, 12
        mov     %edx, DWORD PTR [%esp+16]
        mov     DWORD PTR [%esp+8], %edi
        mov     %ecx, DWORD PTR [%esp+20]
        xor     %edi, %edi
        mov     DWORD PTR [%esp], %ebx
        mov     %ebx, %edi
        mov     %eax, %edx
        mov     DWORD PTR [%esp+4], %esi
        add     %ebx, %edx
        mov     %edi, DWORD PTR [%esp+8]
        lea     %edx, [%ecx+%ebx]
        mov     %esi, DWORD PTR [%esp+4]
        mov     %ebx, DWORD PTR [%esp]
        add     %esp, 12
        ret

I'm not sure example what GCC is smoking here, but it looks like it has just
confused itself with a bunch of stack slots or something.  The intel compiler
is better, but still not good:

T:
        movl      4(%esp), %edx                                 #2.11
        movl      8(%esp), %eax                                 #2.11
        lea       (%eax,%edx), %ecx                             #3.12
        movl      $1, %eax                                      #3.12
        mull      %edx                                          #3.12
        addl      %ecx, %edx                                    #3.12
        ret                                                     #3.12

llvm-svn: 12693
 2004-04-06 04:55:43 +00:00
Chris Lattner
6038e5a4a1 Efficiently handle a long multiplication by a constant. For this testcase: 
long %test(long %X) {
        %Y = mul long %X, 123
        ret long %Y
}

we used to generate:

test:
        sub %ESP, 12
        mov DWORD PTR [%ESP + 8], %ESI
        mov DWORD PTR [%ESP + 4], %EDI
        mov DWORD PTR [%ESP], %EBX
        mov %ECX, DWORD PTR [%ESP + 16]
        mov %ESI, DWORD PTR [%ESP + 20]
        mov %EDI, 123
        mov %EBX, 0
        mov %EAX, %ECX
        mul %EDI
        imul %ESI, %EDI
        add %ESI, %EDX
        imul %ECX, %EBX
        add %ESI, %ECX
        mov %EDX, %ESI
        mov %EBX, DWORD PTR [%ESP]
        mov %EDI, DWORD PTR [%ESP + 4]
        mov %ESI, DWORD PTR [%ESP + 8]
        add %ESP, 12
        ret

Now we emit:
test:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, DWORD PTR [%ESP + 8]
        mov %EDX, 123
        mul %EDX
        imul %ECX, %ECX, 123
        add %ECX, %EDX
        mov %EDX, %ECX
        ret

Which, incidently, is substantially nicer than what GCC manages:
T:
        sub     %esp, 8
        mov     %eax, 123
        mov     DWORD PTR [%esp], %ebx
        mov     %ebx, DWORD PTR [%esp+16]
        mov     DWORD PTR [%esp+4], %esi
        mov     %esi, DWORD PTR [%esp+12]
        imul    %ecx, %ebx, 123
        mov     %ebx, DWORD PTR [%esp]
        mul     %esi
        mov     %esi, DWORD PTR [%esp+4]
        add     %esp, 8
        lea     %edx, [%ecx+%edx]
        ret

llvm-svn: 12692
 2004-04-06 04:29:36 +00:00
Chris Lattner
dd0d31ca2a Improve code generation of long shifts by 32. 
On this testcase:

long %test(long %X) {
        %Y = shr long %X, ubyte 32
        ret long %Y
}

instead of:
t:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EAX, DWORD PTR [%ESP + 8]
        sar %EAX, 0
        mov %EDX, 0
        ret


we now emit:
test:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EAX, DWORD PTR [%ESP + 8]
        mov %EDX, 0
        ret

llvm-svn: 12688
 2004-04-06 03:42:38 +00:00
Chris Lattner
7eb61104dc Bugfixes: inc/dec don't set the carry flag! 
llvm-svn: 12687
 2004-04-06 03:36:57 +00:00
Chris Lattner
8cdbb1fe84 Improve code for passing constant longs as arguments to function calls. 
For example, on this instruction:

        call void %test(long 1234)

Instead of this:
        mov %EAX, 1234
        mov %ECX, 0
        mov DWORD PTR [%ESP], %EAX
        mov DWORD PTR [%ESP + 4], %ECX
        call test

We now emit this:
        mov DWORD PTR [%ESP], 1234
        mov DWORD PTR [%ESP + 4], 0
        call test

llvm-svn: 12686
 2004-04-06 03:23:00 +00:00
Chris Lattner
2738d6d4a4 Emit more efficient 64-bit operations when the RHS is a constant, and one 
of the words of the constant is zeros.  For example:
  Y = and long X, 1234

now generates:
  Yl = and Xl, 1234
  Yh = 0

instead of:
  Yl = and Xl, 1234
  Yh = and Xh, 0

llvm-svn: 12685
 2004-04-06 03:15:53 +00:00
Chris Lattner
bdbedf9523 Fix typeo 
llvm-svn: 12684
 2004-04-06 02:13:25 +00:00
Chris Lattner
606639ed1a Add support for simple immediate handling to long instruction selection. 
This allows us to handle code like 'add long %X, 123456789012' more efficiently.

llvm-svn: 12683
 2004-04-06 02:11:49 +00:00
Chris Lattner
e84f12a165 The sbb instructions really ARE sbb's, not adc's 
llvm-svn: 12682
 2004-04-06 02:02:11 +00:00
Chris Lattner
0808f5daa5 Implement negation of longs efficiently. For this testcase: 
long %test(long %X) {
        %Y = sub long 0, %X
        ret long %Y
}

We used to generate:

test:
        sub %ESP, 4
        mov DWORD PTR [%ESP], %ESI
        mov %ECX, DWORD PTR [%ESP + 8]
        mov %ESI, DWORD PTR [%ESP + 12]
        mov %EAX, 0
        mov %EDX, 0
        sub %EAX, %ECX
        sbb %EDX, %ESI
        mov %ESI, DWORD PTR [%ESP]
        add %ESP, 4
        ret

Now we generate:

test:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        neg %EAX
        adc %EDX, 0
        neg %EDX
        ret

llvm-svn: 12681
 2004-04-06 01:48:06 +00:00
Chris Lattner
56dcdcf638 Minor tweak to avoid an extra reg-reg copy that the register allocator has to eliminate 
llvm-svn: 12680
 2004-04-06 01:25:33 +00:00
Chris Lattner
42cf317fca Two changes: 
* In promote32, if we can just promote a constant value, do so instead of
    promoting a constant dynamically.
  * In visitReturn inst, actually USE the promote32 argument that takes a
    Value*

The end result of this is that we now generate this:

test:
        mov %EAX, 0
        ret

instead of...

test:
        mov %AX, 0
        movzx %EAX, %AX
        ret

for:

ushort %test() {
        ret ushort 0
}

llvm-svn: 12679
 2004-04-06 01:21:00 +00:00
Chris Lattner
a2ecf0cf75 lli no longer takes the -quiet option! 
llvm-svn: 12674
 2004-04-05 20:28:41 +00:00
Chris Lattner
d154cb1717 Do not mangle intrinsics in any way! 
llvm-svn: 12673
 2004-04-05 20:17:53 +00:00
Chris Lattner
fb8a43c586 Sparc don't got not "sqrtl", bum bum bum 
llvm-svn: 12670
 2004-04-05 19:05:15 +00:00
Misha Brukman
21355cfcba Kill warnings during an optimized compile where assert() disappears. 
llvm-svn: 12669
 2004-04-05 19:00:46 +00:00
Chris Lattner
8b61b8c936 Fix PR312 and IndVarsSimplify/2004-04-05-InvokeCastCrash.llx 
llvm-svn: 12668
 2004-04-05 18:46:55 +00:00
Chris Lattner
c92af54ed5 Fix a bug in yesterdays checkins which broke siod. siod is a great testcase! :) 
llvm-svn: 12659
 2004-04-05 16:02:41 +00:00
Chris Lattner
6c961339a3 Fix InstCombine/2004-04-04-InstCombineReplaceAllUsesWith.ll 
llvm-svn: 12658
 2004-04-05 02:10:19 +00:00
Chris Lattner
9236135e8f Support getelementptr instructions which use uint's to index into structure 
types and can have arbitrary 32- and 64-bit integer types indexing into
sequential types.

llvm-svn: 12653
 2004-04-05 01:30:19 +00:00
Chris Lattner
f78d930837 Support getelementptr instructions which use uint's to index into structure 
types and can have arbitrary 32- and 64-bit integer types indexing into
sequential types.

Auto-upgrade .ll files that use ubytes to index into structures to use uint's.

llvm-svn: 12652
 2004-04-05 01:30:04 +00:00