Commit Graph

731 Commits

Author SHA1 Message Date
Misha Brukman
3e7a88e9db Fix indentation: should be 2 spaces.
llvm-svn: 15240
2004-07-26 18:48:58 +00:00
Misha Brukman
61ff8a374f Fix file header as it has been renamed.
llvm-svn: 15239
2004-07-26 18:45:48 +00:00
Misha Brukman
ccd1114518 Renamed files to have the `X86' prefix for uniqueness purposes.
All CVS history was renamed, the *,v were copied over.  No worries.

llvm-svn: 15238
2004-07-26 18:43:11 +00:00
Chris Lattner
093d84c480 Remove some (LARGE) abandoned code for the release. If this is ever needed
again in the future, it can be resurrected out of CVS

llvm-svn: 15112
2004-07-22 21:30:35 +00:00
Chris Lattner
e3d3cd3e71 Fix cases where we generated horrible code like this:
mov %EDI, 12
        add %EDI, %ECX
        mov %ECX, 12
        add %ECX, %EDX
        mov %EDX, 12
        add %EDX, %ESI

instead (really!) generate this:

        add %ECX, 12
        add %EDX, 12
        add %ESI, 12

llvm-svn: 15090
2004-07-21 21:28:26 +00:00
Chris Lattner
e8b9b58454 While I'm at it, don't break codegen of mul by 3,5,9.
llvm-svn: 15013
2004-07-19 23:50:57 +00:00
Chris Lattner
f668465840 Generate better code for multiplies by negative constants like -4, -1, -9, etc.
llvm-svn: 15012
2004-07-19 23:47:21 +00:00
Reid Spencer
14243817ec bug 122:
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14950
2004-07-18 00:38:32 +00:00
Chris Lattner
9bcf258cc3 Make sure to emit the immediate byte for instructions like:
shrd [mem], reg, imm

This fixes the jit-ls failure on 186.crafty.

llvm-svn: 14914
2004-07-17 20:26:14 +00:00
Chris Lattner
d7905d828b Reserve the correct amt of space.
llvm-svn: 14913
2004-07-17 20:24:05 +00:00
Chris Lattner
c4888ccda7 Patches towards fixing PR341
llvm-svn: 14841
2004-07-15 02:14:30 +00:00
Chris Lattner
210ffe4b77 Improve codegen for the LLVM offsetof/sizeof "operator". Before we compiled
this LLVM function:

int %foo() {
        ret int cast (int** getelementptr (int** null, int 1) to int)
}

into:

foo:
        mov %EAX, 0
        lea %EAX, DWORD PTR [%EAX + 4]
        ret

now we compile it into:

foo:
        mov %EAX, 4
        ret

This sequence is frequently generated by the MSIL front-end, and soon the malloc lowering pass and
Java front-ends as well..

-Chris

llvm-svn: 14834
2004-07-15 00:58:53 +00:00
Chris Lattner
6331eb6bbe Delete the allocate*TargetMachine function, which is now dead .
The shared command line options are now in a header that makes sense.

llvm-svn: 14756
2004-07-11 04:17:10 +00:00
Chris Lattner
b67e3b01bc Make these format a bit nicer
llvm-svn: 14747
2004-07-11 03:27:42 +00:00
Chris Lattner
2ada866a78 Auto-registrate target
llvm-svn: 14745
2004-07-11 02:48:49 +00:00
Reid Spencer
50ec3f9325 Add #include <iostream> since Value.h does not #include it any more.
llvm-svn: 14622
2004-07-04 12:19:56 +00:00
Chris Lattner
6da0499f4b Remove dead blocks
llvm-svn: 14564
2004-07-02 05:46:41 +00:00
Misha Brukman
9e015dddb8 Fix associativity of parameters to assert(): now it actually makes sense.
llvm-svn: 14483
2004-06-29 19:43:20 +00:00
Misha Brukman
b3e4179f42 Convert tabs to spaces.
llvm-svn: 14482
2004-06-29 19:28:53 +00:00
Chris Lattner
2abf0134d0 I believe that the code generator now properly handles dead basic blocks. If not,
this is a bug, and should be fixed.

llvm-svn: 14476
2004-06-29 07:17:12 +00:00
Chris Lattner
cd1a39bbec Fix a regression from r1.224. In particular, codegen a cast from double ->
float as a truncation by going through memory.  This truncation was being
skipped, which caused 175.vpr to fail after aggressive register promotion.

llvm-svn: 14473
2004-06-29 00:14:38 +00:00
Tanya Lattner
da38dc5180 Made a fix so that you can print out MachineInstrs that belong to a MachineBasicBlock that is not yet attached to a MachineFunction. This change includes changing the third operand (TargetMachine) to a pointer for the MachineInstr::print function.
llvm-svn: 14389
2004-06-25 00:13:11 +00:00
Misha Brukman
e38f7ed2cc Spell out `NoFramePointerElim' for readability.
llvm-svn: 14299
2004-06-21 21:17:44 +00:00
Misha Brukman
a2ac4e4345 Use the common `NoFPElim' setting instead of our own.
llvm-svn: 14298
2004-06-21 21:10:24 +00:00
Chris Lattner
cc465361d9 Move the IntrinsicLowering header into the CodeGen directory, as per PR346
llvm-svn: 14266
2004-06-20 07:49:54 +00:00
Chris Lattner
9e1bbe86ba Codegen sub C, X a little bit better for register pressure. Instead of
mov REG, C
sub REG, X

generate:

neg X
add X, C

which uses one less reg

llvm-svn: 14213
2004-06-18 00:50:37 +00:00
Chris Lattner
a5750b975a Fold setcc instructions into select and branches that are not in the same BB as
the setcc.

llvm-svn: 14212
2004-06-18 00:29:22 +00:00
Chris Lattner
f815117481 Do not fold loads into instructions if it is used more than once. In particular
we do not want to fold the load in cases like this:

  X = load
    = add A, X
    = add B, X

llvm-svn: 14204
2004-06-17 22:15:25 +00:00
Chris Lattner
0cd29ae2cd Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID()
llvm-svn: 14201
2004-06-17 18:19:28 +00:00
Chris Lattner
9bb0083d16 Remove support for llvm.isnan. Alkis wins :)
llvm-svn: 14189
2004-06-15 21:48:07 +00:00
Chris Lattner
d11493d8c4 Add basic support for the isunordered intrinsic. The isnan stuff still needs to go
llvm-svn: 14185
2004-06-15 21:36:44 +00:00
Chris Lattner
3a8e675c03 By far, one of the most common uses of isnan is to make 'isunordered'
comparisons.  In an 'isunordered' predicate, which looks like this at
the LLVM level:

        %a = call bool %llvm.isnan(double %X)
        %b = call bool %llvm.isnan(double %Y)
        %COM = or bool %a, %b

We used to generate this code:

        fxch %ST(1)
        fucomip %ST(0), %ST(0)
        setp %AL
        fucomip %ST(0), %ST(0)
        setp %AH
        or %AL, %AH

With this patch, we generate this code:

        fucomip %ST(0), %ST(1)
        fstp %ST(0)
        setp %AL

Which should make alkis happy.  Tested as X86/compare_folding.llx:test1

llvm-svn: 14148
2004-06-11 05:33:49 +00:00
Chris Lattner
f78e3e7f63 Fix bug in previous checkin
llvm-svn: 14146
2004-06-11 05:22:44 +00:00
Chris Lattner
7d8093efb1 No really, these are dead now
llvm-svn: 14145
2004-06-11 04:50:14 +00:00
Chris Lattner
a8e603b719 Now that compare instructions aren't lumped in with the other twoargfp instructions,
we can get rid of the FpUCOM/FpUCOMi pseudo instructions, which makes stuff simpler
and faster.

llvm-svn: 14144
2004-06-11 04:49:02 +00:00
Chris Lattner
b050f778ca Introduce a new FP instruction type to separate the compare cases from the
twoarg cases.

llvm-svn: 14143
2004-06-11 04:41:24 +00:00
Chris Lattner
edb06042b9 Add direct support for the isnan intrinsic, implementing test/Regression/CodeGen/X86/isnan.llx
testcase

llvm-svn: 14141
2004-06-11 04:31:10 +00:00
Chris Lattner
4c8b57ea31 Add support for the setp instructions
llvm-svn: 14140
2004-06-11 04:30:06 +00:00
Chris Lattner
c66e996765 Split compare instruction handling OUT of handleTwoArgFP into handleCompareFP.
This makes the code much simpler, and the two cases really do belong apart.
Once we do it, it's pretty obvious how flawed the logic was for A != A case,
so I fixed it (fixing PR369).

This also uses freeStackSlotAfter instead of inserting an fxchg then
popStackAfter'ing in the case where there is a dead result (unlikely, but
possible), producing better code.

llvm-svn: 14139
2004-06-11 04:25:06 +00:00
Chris Lattner
1f0e0d55c4 Fix the fixed stack offset, patch contributed by Vladimir Prus
llvm-svn: 14110
2004-06-10 06:19:25 +00:00
John Criswell
287e3fc88b Fix for PR#366. We use getClassB() so that we can handle cast instructions
that cast to bool.

llvm-svn: 14096
2004-06-09 15:18:51 +00:00
Chris Lattner
c51b272047 This file is obsolete
llvm-svn: 14005
2004-06-04 00:15:21 +00:00
Chris Lattner
5ad9eaab1a Convert to the new TargetMachine interface.
llvm-svn: 13952
2004-06-02 05:55:25 +00:00
Chris Lattner
1e22b42cb6 Add support for accurate garbage collection to the LLVM code generators
llvm-svn: 13696
2004-05-23 21:23:35 +00:00
Chris Lattner
85f19c7b3f Add some notes to myself, no functional changes
llvm-svn: 13695
2004-05-23 21:23:12 +00:00
Chris Lattner
5862899c44 minor wording change
llvm-svn: 13694
2004-05-23 21:22:55 +00:00
Brian Gaeke
e5736bf986 Don't keep track of references to LLVM BasicBlocks while emitting; use
MachineBasicBlocks instead.

llvm-svn: 13568
2004-05-14 06:54:58 +00:00
Brian Gaeke
a25a10e73b Support MachineBasicBlock operands on RawFrm instructions.
Get rid of separate numbering for LLVM BasicBlocks; use the automatically
generated MachineBasicBlock numbering.

llvm-svn: 13567
2004-05-14 06:54:57 +00:00
Brian Gaeke
a17301ca8b Generate branch machine instructions with MachineBasicBlock operands instead of
LLVM BasicBlock operands.

llvm-svn: 13566
2004-05-14 06:54:56 +00:00
Chris Lattner
269da7901a Two more improvements for null pointer handling: storing a null pointer
and passing a null pointer into a function.

For this testcase:

void %test(int** %X) {
  store int* null, int** %X
  call void %test(int** null)
  ret void
}

we now generate this:

test:
        sub %ESP, 12
        mov %EAX, DWORD PTR [%ESP + 16]
        mov DWORD PTR [%EAX], 0
        mov DWORD PTR [%ESP], 0
        call test
        add %ESP, 12
        ret

instead of this:

test:
        sub %ESP, 12
        mov %EAX, DWORD PTR [%ESP + 16]
        mov %ECX, 0
        mov DWORD PTR [%EAX], %ECX
        mov %EAX, 0
        mov DWORD PTR [%ESP], %EAX
        call test
        add %ESP, 12
        ret

llvm-svn: 13558
2004-05-13 15:26:48 +00:00