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6122 Commits

Author SHA1 Message Date
Brian Gaeke
ff8282604a Prune unnecessary #includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12731 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 23:25:07 +00:00
Brian Gaeke
20117102c2 Simple delay slot filler pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12730 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 23:21:45 +00:00
Brian Gaeke
86a8790826 Add references to delay slot filler pass. 
Fill in addPassesToJITCompile method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12729 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 23:21:24 +00:00
Brian Gaeke
3a8ad62d4f First attempt at handling frame index elimination. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12728 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 22:10:22 +00:00
Brian Gaeke
1c38175d6b 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12727 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 22:10:11 +00:00
Brian Gaeke
856e4fc59e Delete reference to "the Mach-O Runtime ABI". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12726 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 22:09:59 +00:00
Brian Gaeke
ea8494bb89 Deal with call return values. 
Don't put NOPs in delay slots at all. We'll have a fix-up pass later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12725 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 22:09:23 +00:00
Jakub Staszak
8ac0009979 file based off InstSelectSimple.cpp, slowly being replaced by generated code from the really simple X86 instruction selector tablegen backend 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12715 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 19:35:17 +00:00
Jakub Staszak
0a8fd30c1b Tablgen files for really simple instruction selector 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12714 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 19:34:00 +00:00
Chris Lattner
7b92de1e7d Fix PR313: [x86] JIT miscompiles unsigned short to floating point 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12711 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 19:29:36 +00:00
Chris Lattner
43ab3a8f45 Fix incorrect encoding of some ADC and SBB instuctions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12710 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 19:20:32 +00:00
Chris Lattner
48c937e5c9 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12702 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 17:34:50 +00:00
Chris Lattner
e80e637793 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12696 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 16:02:27 +00:00
Chris Lattner
6ab06d5d19 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12693 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 04:55:43 +00:00
Chris Lattner
028adc422d 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12692 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 04:29:36 +00:00
Chris Lattner
722070e0ba 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12688 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 03:42:38 +00:00
Chris Lattner
0652167bea Bugfixes: inc/dec don't set the carry flag! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12687 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 03:36:57 +00:00
Chris Lattner
92900a65a3 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12686 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 03:23:00 +00:00
Chris Lattner
33f7fa317b 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12685 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 03:15:53 +00:00
Chris Lattner
7ba92306db Fix typeo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12684 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 02:13:25 +00:00
Chris Lattner
ab1d0e0963 Add support for simple immediate handling to long instruction selection. 
This allows us to handle code like 'add long %X, 123456789012' more efficiently.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12683 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 02:11:49 +00:00
Chris Lattner
ee98389808 The sbb instructions really ARE sbb's, not adc's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12682 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 02:02:11 +00:00
Chris Lattner
edd5e4957a 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12681 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 01:48:06 +00:00
Chris Lattner
502e36c3c9 Minor tweak to avoid an extra reg-reg copy that the register allocator has to eliminate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12680 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 01:25:33 +00:00
Chris Lattner
29bf0623e5 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
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12679 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-06 01:21:00 +00:00
Chris Lattner
8505c867b1 lli no longer takes the -quiet option! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12674 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 20:28:41 +00:00
Chris Lattner
6e40e1d15c Do not mangle intrinsics in any way! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12673 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 20:17:53 +00:00
Chris Lattner
ea9e005ce6 Sparc don't got not "sqrtl", bum bum bum 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12670 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 19:05:15 +00:00
Misha Brukman
bb2aff1e18 Kill warnings during an optimized compile where assert() disappears. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12669 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 19:00:46 +00:00
Chris Lattner
ddd947f21a Fix PR312 and IndVarsSimplify/2004-04-05-InvokeCastCrash.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12668 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 18:46:55 +00:00
Chris Lattner
548f47efb0 Fix a bug in yesterdays checkins which broke siod. siod is a great testcase! :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12659 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 16:02:41 +00:00
Chris Lattner
15a76c0b35 Fix InstCombine/2004-04-04-InstCombineReplaceAllUsesWith.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12658 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 02:10:19 +00:00
Chris Lattner
28977af72a 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12653 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 01:30:19 +00:00
Chris Lattner
830b6f9868 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12652 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 01:30:04 +00:00
Chris Lattner
5fa428fda9 Implement support for a new LLVM 1.3 bytecode format, which uses uint's 
to index into structure types and allows arbitrary 32- and 64-bit integer
types to index into sequential types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12651 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-05 01:27:26 +00:00
Chris Lattner
d144f42a5a Add ConstantExpr::get(Sign|Zero)Extend methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12648 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-04 23:20:30 +00:00
Chris Lattner
97220b7338 In the perhaps not-to-distant future, we might support gep instructions that 
have non-long indices for sequential types.  In order to avoid trying to figure
out how the v9 backend works, we'll just hack it in the preselection pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12647 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-04 20:44:05 +00:00
Chris Lattner
702a8a070f Adjust to new interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12646 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-04 19:47:06 +00:00
Chris Lattner
c6b0fb39cb Adjust to new gep_type_iterator prototypes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12644 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-04 17:30:06 +00:00
Chris Lattner
9dd8770609 Remove a bunch of cruft that was used to be backwards compatible with the last 
prerelease format for LLVM bytecode files.  Now we only are compatible with
LLVM 1.0+.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12643 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-03 23:43:42 +00:00
Chris Lattner
5da80974c0 Implement test/Regression/Transforms/GCSE/undefined_load.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12641 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-03 00:45:16 +00:00
Chris Lattner
e34c0b48a0 Add a break in the default case 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12639 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-03 00:43:03 +00:00
Brian Gaeke
8507ecb36d Add autoconf support for isStandardOutAConsole (). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12638 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 21:26:04 +00:00
Chris Lattner
9687845800 Remove obsolete files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12633 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 20:56:24 +00:00
Brian Gaeke
6c5526e56e Add support for many of the MRegisterInfo callbacks. 
Eliminating call-frame pseudo instrs and frame indices are still stubs.
Flesh out the emitPrologue method based on better ABI knowledge.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12632 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 20:53:37 +00:00
Brian Gaeke
8542e08d15 Add load, store, and NOP instructions. 
Fix up comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12631 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 20:53:37 +00:00
Brian Gaeke
a778ca555a Add support for printing pc-relative displacements of functions (as used in 
the CALL instruction).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12630 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 20:53:35 +00:00
Brian Gaeke
f7e44ef8d5 Add support for call instructions (0-ary only for now). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12629 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 20:53:33 +00:00
Chris Lattner
d18d9dcd28 Comment out debugging printouts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12623 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 20:26:46 +00:00
Chris Lattner
40bf8b48cd Rewrite the indvars pass to use the ScalarEvolution analysis. 
This also implements some new features for the indvars pass, including
linear function test replacement, exit value substitution, and it works with
a much more general class of induction variables and loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12620 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 20:24:31 +00:00
Chris Lattner
53e677abad Add a new analysis 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12619 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 20:23:17 +00:00
Chris Lattner
7aa773bc07 Fix the obvious bug in my previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12618 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 18:15:10 +00:00
Chris Lattner
147af6b75f Implement Transforms/SimplifyCFG/return-merge.ll 
This actually causes us to turn code like:

  return C ? A : B;

into a select instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12617 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 18:13:43 +00:00
Alkis Evlogimenos
bee8a094af Clean up code a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12615 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 18:11:32 +00:00
Brian Gaeke
79ee87b1bb Only strip symbols if emitting bytecode to the assembly file. 
Move lowerselect pass to come after preselection.  Move machine
code construction and stack slots pass to come right before instruction
selection. This is to help fix perlbmk.

Update comments.

Make the sequence of passes in addPassesToJITCompile look more like
the sequence of passes in addPassesToEmitAssembly, including support
for -print-machineinstrs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12614 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 17:52:40 +00:00
Brian Gaeke
142e22a5f4 Add support for constant select expressions. Clarify the assertion failure msg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12613 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 17:52:29 +00:00
Alkis Evlogimenos
1a66731da8 Fix type in comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12611 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 16:02:50 +00:00
Alkis Evlogimenos
13ce339442 Fix type in instruction builder instantiation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12610 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 15:51:03 +00:00
Chris Lattner
fdc38c4ad3 Make the verifier API more complete and useful. 
Patch contributed by Reid Spencer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12609 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 15:45:08 +00:00
Alkis Evlogimenos
8b28b6d187 Add more ADC and SBB variants 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12607 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 07:11:10 +00:00
Chris Lattner
b234d460b2 Add new function, autoconf support required tho 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12600 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-02 05:04:03 +00:00
Chris Lattner
c68bace452 Fix PR310 and TailDup/2004-04-01-DemoteRegToStack.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12597 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 20:28:45 +00:00
Chris Lattner
4edf6c043e Remove some assertions that are now bogus with the last patch I put in 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12595 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 19:21:46 +00:00
Chris Lattner
4f303bd4a5 Fix PR306: Loop simplify incorrectly updates dominator information 
Testcase: LoopSimplify/2004-04-01-IncorrectDomUpdate.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12592 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 19:06:07 +00:00
Chris Lattner
6683dbf32e Add support for select constant expressions to the CBE, fixing SIOD 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12589 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 05:28:26 +00:00
Chris Lattner
0526f01fec Simplify code by using the more powerful BuildMI forms. 
Implement a small optimization.  In test/Regression/CodeGen/X86/select.ll,
we now generate this for foldSel3:

foldSel3:
        mov %AL, BYTE PTR [%ESP + 4]
        fld DWORD PTR [%ESP + 8]
        fld DWORD PTR [%ESP + 12]
        mov %EAX, DWORD PTR [%ESP + 16]
        mov %ECX, DWORD PTR [%ESP + 20]
        cmp %EAX, %ECX
        fxch %ST(1)
        fcmovae %ST(0), %ST(1)
***     fstp %ST(1)
        ret

Instead of:

foldSel3:
        mov %AL, BYTE PTR [%ESP + 4]
        fld DWORD PTR [%ESP + 8]
        fld DWORD PTR [%ESP + 12]
        mov %EAX, DWORD PTR [%ESP + 16]
        mov %ECX, DWORD PTR [%ESP + 20]
        cmp %EAX, %ECX
        fxch %ST(1)
        fcmovae %ST(0), %ST(1)
***     fxch %ST(1)
***     fstp %ST(0)
        ret

In practice, this only effects code size: performance should be basically
unaffected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12588 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 04:06:09 +00:00
Chris Lattner
f1ac50ec53 Wrap at 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12587 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-04-01 04:03:27 +00:00
Chris Lattner
68626c2b30 Generate slightly smaller code, "test R, R" instead of "cmp R, 0" 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12579 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:22:36 +00:00
Chris Lattner
08bde1870a The X86 backend no longer needs the select lowering pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12578 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:03:46 +00:00
Chris Lattner
352eb48f8e Codegen FP select instructions into X86 conditional moves. Annoyingly enough 
the X86 does not support a full set of fp cmove instructions, so we can't always
fold the condition into the select.  :(  Yuck.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12577 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:03:35 +00:00
Chris Lattner
c1bab32bc5 Add support for floating point conditional move instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12576 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:02:36 +00:00
Chris Lattner
30b2f72e7c Add support for FP cmoves 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12575 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:02:21 +00:00
Chris Lattner
1c54a85447 Add FP conditional move instructions, which annoyingly have special properties 
that require the asmwriter to be extended (printing implicit uses before the
explicit operands)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12574 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:02:13 +00:00
Chris Lattner
0e28eca4bc Add warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12573 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 22:00:30 +00:00
Chris Lattner
b4186e0ccd MBB::remove should not modify the iterator passed in 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12572 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 21:59:59 +00:00
Chris Lattner
4f6410f5cb MachineBasicBlock::remove should not modify the iterator passed in 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12571 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 21:59:29 +00:00
Brian Gaeke
368c5da198 Factor out getStaticStackSize from InsertPrologCode(), so that I can more 
easily steal it for a separate use in the reoptimizer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12568 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 20:58:37 +00:00
Brian Gaeke
60d6e54c72 Use the true, decoded name of the archive member in getObjectType. 
In ReadArchiveBuffer, make sure that MemberName is set in the case where
getObjectType would want to return SVR4LongFilename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12567 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 19:51:00 +00:00
Chris Lattner
91ef460285 Avoid TRUE and FALSE which apparently conflict with some macros on OSX 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12566 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 03:49:47 +00:00
Chris Lattner
1438102576 Fix linking of constant expr casts due to type resolution changes. With 
this and the other patches 253.perlbmk links again.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12565 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 02:58:28 +00:00
Chris Lattner
4b2f08a3a9 Add support for constant expr casts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12564 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 02:56:11 +00:00
Chris Lattner
1e490ba4cd Add support for reading constantexpr select instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12563 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-31 02:53:59 +00:00
Chris Lattner
92e84229e1 Fix a latent bug in select constantexpr handling that was broke 253.perlbmk 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12562 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 22:51:03 +00:00
Alkis Evlogimenos
a8db01ac83 Correctly update LiveVariables when an instruction changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12561 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 22:44:39 +00:00
Chris Lattner
307ecbaddb Fold comparisons into select instructions, making much better code and 
using our broad selection of movcc instructions.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12560 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 22:39:09 +00:00
Chris Lattner
87d3bb5dfa Implement spill code folding for all of the conditional move instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12554 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 21:29:47 +00:00
Chris Lattner
12d96a0b4d Add direct support for integer select instructions, though we still don't support 
folding compares into the select yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12553 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 21:22:00 +00:00
Chris Lattner
bc280abd46 Fix bug: Assembler/2004-03-30-UnclosedFunctionCrash.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12551 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 20:58:25 +00:00
Chris Lattner
a5cdab7101 Fix some serious bugs in the cmov descriptions, which didn't cause a problem because 
we never generated them

Make indentation a bit more consistent


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12549 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 20:18:02 +00:00
Brian Gaeke
87fa610ee0 Start cleaning up this pass so that I can debug it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12548 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:53:46 +00:00
Chris Lattner
552112f2f8 Now that all the code generators support the select instruction, and the instcombine 
pass can eliminate many nasty cases of them, start generating them in the optimizers


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12545 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:44:05 +00:00
Chris Lattner
c32b30a429 Implement select.ll:test[3-6] 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12544 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:37:13 +00:00
Chris Lattner
6f2ab04e91 Fix a fairly major performance problem. If a PHI node had a constant as 
an incoming value from a block, the selector would evaluate the constant
at the TOP of the block instead of at the end of the block.  This made the
live range for the constant span the entire block, increasing register
pressure needlessly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12542 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 19:10:12 +00:00
Chris Lattner
5abd61f6d9 Add the select lowering pass to get initial support for select instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12541 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 18:41:59 +00:00
Chris Lattner
18bdbc3dda Add a simple select instruction lowering pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12540 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 18:41:10 +00:00
Chris Lattner
fc33d30446 Add some new methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12539 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-30 00:20:08 +00:00
Brian Gaeke
eb8863db90 Don't warn about a null live range if the Value is a ConstantIntegral. 
Otherwise, if you're in debugging mode, you get warnings for (apparently)
every immediate constant in the function during reg. allocation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12538 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 21:58:41 +00:00
Brian Gaeke
47b716483e Change how the beginnings and ends of MachineFunctions are printed. Get 
rid of the funny cast.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12537 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 21:58:31 +00:00
Chris Lattner
db81395452 Adjust to new itf 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12534 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 20:42:49 +00:00
Chris Lattner
d25e3ecb3c Handle -0.0 correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12530 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 19:51:24 +00:00
Chris Lattner
4dcb5401e4 Add a bunch of methods that should have been added a long time ago. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12526 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 02:37:53 +00:00
Chris Lattner
944cfafe76 Add another check 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12525 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 00:29:36 +00:00
Chris Lattner
e83593b2d3 Fix an assertion 
Contributed by Reid Spencer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12524 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 00:17:20 +00:00
Chris Lattner
11cad517a1 Make error message a bit nicer. 
Contributed by Reid Spencer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12523 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-29 00:16:01 +00:00
Chris Lattner
e3651f00e8 Add two methods which have been needed for a long time: Type::get(Un)signedVersion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12522 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-26 21:43:22 +00:00
Chris Lattner
4df1b8aa26 X % -1 == X % 1 == 0 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12520 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-26 16:11:24 +00:00
Chris Lattner
ebd985cb87 Two changes: 
#1 is to unconditionally strip constantpointerrefs out of
instruction operands where they are absolutely pointless and inhibit
optimization.  GRRR!

#2 is to implement InstCombine/getelementptr_const.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12519 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-25 22:59:29 +00:00
Chris Lattner
698c4a4bbb Minor efficiency improvement, finegrainify namespacification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12517 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-25 22:56:03 +00:00
Chris Lattner
e151259288 Hrm, we were leaking ~1M of garbage that valgrind never told us about because 
it was "reachable".  Cute.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12515 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 23:34:33 +00:00
Chris Lattner
7c881dffc9 Teach the optimizer to delete zero sized alloca's (but not mallocs!) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12507 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 06:08:10 +00:00
Chris Lattner
6b835360f1 Fix PR299: [Sparc] Code generator asserts on alloc of zero size type 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12504 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-19 04:21:43 +00:00
Chris Lattner
ab18020cbd Malloc doesn't kill a load. This patch need not go into 1.2 though. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12500 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 17:01:26 +00:00
Chris Lattner
85c84e759e Fix a really nasty bug that was breaking ijpeg in LLC mode. We were incorrectly 
folding load instructions into other instructions across free instruction
boundaries.  Perhaps this will also fix the other strange failures?


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12494 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 06:29:54 +00:00
Chris Lattner
aa7ab53b99 Fix bug: CodeExtractor/2004-03-17-MissedLiveIns.ll 
With this fix we now successfully extract all 149 loops from 256.bzip2 without
crashing or miscompiling the program!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12493 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 05:56:32 +00:00
Chris Lattner
f6e43bc796 Add statistics to the loop extractor. The loop extractor has successfully 
extracted all 63 loops for Olden/bh without crashing and without
miscompiling the program!!!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12491 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 05:46:10 +00:00
Chris Lattner
fdded9f95a Fix problem with PHI nodes having multiple predecessors from different 
exit nodes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12490 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 05:43:18 +00:00
Chris Lattner
d07f899691 Fix CodeExtractor/2004-03-17-UpdatePHIsOutsideRegion.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12489 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 05:38:31 +00:00
Chris Lattner
5cc8ca6420 Seriously simplify and correct the PHI node handling code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12487 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 05:28:49 +00:00
Chris Lattner
04229c192b Fix CodeExtractor/2004-03-17-OutputMismatch.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12486 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 04:12:05 +00:00
Chris Lattner
b5c1dbf503 Fix several bugs in the extractor: 
1. Names were not put on the new arguments created (ok, this just helps sanity :)
2. Fix outgoing pointer values
3. Do not insert stores for values that had not been computed
4. Fix some wierd problems with the outset calculation

This fixes CodeExtractor/2004-03-14-DominanceProblem.ll, making the extractor
work on at least one simple case!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12484 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 03:49:40 +00:00
Chris Lattner
369287bab5 The code extractor needs dominator info. Provide it 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12483 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 03:48:06 +00:00
Chris Lattner
33e197b777 Prune #includes, moving the module interface to the front. Note that this 
exposed the fact that the header was not self-contained.  There is a reason
we do things :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12481 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-18 03:15:29 +00:00
Chris Lattner
4781bc7142 Fix a HORRIBLY NASTY bug that caused siod to stop working last night. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12479 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-17 23:22:04 +00:00
Chris Lattner
7acd1ccb8a Fix compilation of mesa, which I broke earlier today 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12465 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-17 02:02:47 +00:00
Chris Lattner
e911979650 Be more accurate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12464 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-17 01:59:27 +00:00
Alkis Evlogimenos
eee91172fb Make the set of fixed (preallocated) intervals be a fixed superset of 
unhandled + handled. So unhandled is now including all fixed intervals
and fixed intervals never changes when processing a function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12462 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-17 00:48:59 +00:00
Chris Lattner
50eafbc828 Fix bug in previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12458 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 23:36:49 +00:00
Chris Lattner
24ad00db5a Okay, so there is no reasonable way for tail duplication to update SSA form, 
as it is making effectively arbitrary modifications to the CFG and we don't
have a domset/domfrontier implementations that can handle the dynamic updates.
Instead of having a bunch of code that doesn't actually work in practice,
just demote any potentially tricky values to the stack (causing the problem
to go away entirely).  Later invocations of mem2reg will rebuild SSA for us.

This fixes all of the major performance regressions with tail duplication
from LLVM 1.1.  For example, this loop:

---
int popcount(int x) {
  int result = 0;
  while (x != 0) {
    result = result + (x & 0x1);
    x = x >> 1;
  }
  return result;
}
---
Used to be compiled into:

int %popcount(int %X) {
entry:
	br label %loopentry

loopentry:		; preds = %entry, %no_exit
	%x.0 = phi int [ %X, %entry ], [ %tmp.9, %no_exit ]		; <int> [#uses=3]
	%result.1.0 = phi int [ 0, %entry ], [ %tmp.6, %no_exit ]		; <int> [#uses=2]
	%tmp.1 = seteq int %x.0, 0		; <bool> [#uses=1]
	br bool %tmp.1, label %loopexit, label %no_exit

no_exit:		; preds = %loopentry
	%tmp.4 = and int %x.0, 1		; <int> [#uses=1]
	%tmp.6 = add int %tmp.4, %result.1.0		; <int> [#uses=1]
	%tmp.9 = shr int %x.0, ubyte 1		; <int> [#uses=1]
	br label %loopentry

loopexit:		; preds = %loopentry
	ret int %result.1.0
}

And is now compiled into:

int %popcount(int %X) {
entry:
        br label %no_exit

no_exit:                ; preds = %entry, %no_exit
        %x.0.0 = phi int [ %X, %entry ], [ %tmp.9, %no_exit ]          ; <int> [#uses=2]
        %result.1.0.0 = phi int [ 0, %entry ], [ %tmp.6, %no_exit ]             ; <int> [#uses=1]
        %tmp.4 = and int %x.0.0, 1              ; <int> [#uses=1]
        %tmp.6 = add int %tmp.4, %result.1.0.0          ; <int> [#uses=2]
        %tmp.9 = shr int %x.0.0, ubyte 1                ; <int> [#uses=2]
        %tmp.1 = seteq int %tmp.9, 0            ; <bool> [#uses=1]
        br bool %tmp.1, label %loopexit, label %no_exit

loopexit:               ; preds = %no_exit
        ret int %tmp.6
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12457 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 23:29:09 +00:00
Chris Lattner
c1a0623e86 This code was both incredibly complex and incredibly broken. Fix it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12456 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 23:23:11 +00:00
Brian Gaeke
54cc3c2135 The .type directive on Solaris uses the # character instead of @. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12454 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:52:04 +00:00
Brian Gaeke
6d339f9000 Fix bug in zero-extending of shorts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12453 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:45:42 +00:00
Brian Gaeke
032f80fbf1 Add UMULrr and SMULrr instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12452 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:37:13 +00:00
Brian Gaeke
79db7405f7 Use ! for comment char; it works in both Solaris as and GAS. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12451 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:37:12 +00:00
Brian Gaeke
f57e364f65 Make getClass more robust by adding cLong. 
Add handling for Mul instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12450 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 22:37:11 +00:00
Chris Lattner
91408eba18 Punt if we see gigantic PHI nodes. This improves a huge interpreter loop 
testcase from 32.5s in -raise to take .3s


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12443 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 19:52:53 +00:00
Chris Lattner
a2f652d420 Do not try to optimize PHI nodes with incredibly high degree. This reduces SCCP 
time from 615s to 1.49s on a large testcase that has a gigantic switch statement
that all of the blocks in the function go to (an intepreter).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12442 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 19:49:59 +00:00
Chris Lattner
4bebf08d15 Do not copy gigantic switch instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12441 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 19:45:22 +00:00
Chris Lattner
7d1bd336ab Fix PR296: [execution engines] Unhandled cast constant expression 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12435 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 08:38:56 +00:00
Chris Lattner
85ebd541fa Fix a regression from this patch: 
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20040308/013095.html

Basically, this patch only updated the immediate dominatees of the header node
to tell them that the preheader also dominated them.  In practice, ALL
dominatees of the header node are also dominated by the preheader.

This fixes: LoopSimplify/2004-03-15-IncorrectDomUpdate.
and PR293


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12434 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 06:00:15 +00:00
Chris Lattner
002be76733 Add some missing functions. Make sure to handle calls together in case the 
client has another VN implementation that can VN calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12427 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 03:41:35 +00:00
Chris Lattner
6ae9eb1566 Fix PR294 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12425 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-16 01:45:55 +00:00
Alkis Evlogimenos
63dd4ff809 Add LAHF instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12424 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 17:20:14 +00:00
Chris Lattner
6dd196f762 Restore old inlining heuristic. As the comment indicates, this is a nasty 
horrible hack.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12423 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 06:38:14 +00:00
Chris Lattner
fcead4f426 Ok, the assertion was bogus. Calls that do not read/write memory should not 
have an alias set, just like adds and subtracts don't.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12422 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 06:28:07 +00:00
Chris Lattner
df209fcc7e This assertion is bogus now that calls do not necessarily read/write memory 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12421 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 06:24:15 +00:00
Chris Lattner
46234fd97f Add counters for the number of calls elimianted 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12420 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 05:46:59 +00:00
Chris Lattner
5a6e947f1d Implement CSE of call instructions in the most trivial case. This implements 
GCSE/call_cse.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12419 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 05:44:59 +00:00
Chris Lattner
bbcc147220 Fix a minor bug, implementing GCSE/call_pure_function.ll 
Also, add some stuff I missed before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12417 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 04:18:28 +00:00
Chris Lattner
118dd0ce3d Implement LICM of calls in simple cases. This is sufficient to move around 
sin/cos/strlen calls and stuff.  This implements:
  LICM/call_sink_pure_function.ll
  LICM/call_sink_const_function.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12415 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 04:11:30 +00:00
Chris Lattner
5b5f7c11d0 Don't be COMPLETELY pessimistic in the face of function calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12413 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-03-15 04:08:36 +00:00