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36bf6aa37c
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6889 Commits

Author SHA1 Message Date
Misha Brukman
36bf6aa37c * Use LI(S) to copy constants into registers intead of ADDI(S) as the latter is 
a funky way to "use" R0 for a 0-valued operand
* Add IMPLICIT_DEFs for incoming function arguments via registers to help the
  register allocator not clobber those registers
* Implement comparisons with longs
* Teach emitSelectOperation() to fold the SetCC operation

Patch contributed by Nate Begeman

llvm-svn: 14901
 2004-07-16 21:06:24 +00:00
Misha Brukman
3a720bbeaa * Store all non-volatile int registers R13-31 on the stack, restore on exit 
* Fix comment formatting

llvm-svn: 14900
 2004-07-16 20:55:20 +00:00
Misha Brukman
2fd8a66d40 Fix code formatting 
llvm-svn: 14899
 2004-07-16 20:54:25 +00:00
Misha Brukman
d2ddc81a25 Implement PowerPCInstrInfo::isMoveInstr(), patch by Nate Begeman 
llvm-svn: 14898
 2004-07-16 20:51:55 +00:00
Misha Brukman
2bfd750278 Add prototype for TargetInstrInfo::isMoveInstr() 
llvm-svn: 14897
 2004-07-16 20:50:55 +00:00
Misha Brukman
468900296b * Enable allocation of registers r2-r10 
* Allocate registers 13-31 backwards (to be able to store them all at once)

llvm-svn: 14896
 2004-07-16 20:35:20 +00:00
Misha Brukman
f93e5532d5 Add IMPLICIT_DEFS pseudo-instruction; patch by: Nate Begeman 
llvm-svn: 14895
 2004-07-16 20:33:41 +00:00
Misha Brukman
4b944fcdf9 The generated instruction selector isn't (yet) functional 
llvm-svn: 14894
 2004-07-16 20:31:13 +00:00
Misha Brukman
c3c9dc04ac * Output non-lazy linking stubs for external global variables 
* Get rid of dead and #if 0'd code
* Minor for loop speed-up: save end iterator instead of querying every time

llvm-svn: 14893
 2004-07-16 20:29:04 +00:00
Misha Brukman
ae7301c8b1 Correctly build shared objects on MacOS X for debugging code generators 
llvm-svn: 14892
 2004-07-16 19:45:45 +00:00
Misha Brukman
0d35548f37 Define double alignment as 8 bytes now that assert(DoubleAlignment == PointerSize) 
has been eliminated

llvm-svn: 14891
 2004-07-16 19:32:12 +00:00
Misha Brukman
0a92212542 * Add spaces between words and numbers in comments printed out for longs/floats 
* Print out IMPLICIT_DEFS as comments in the assembly, patch by Nate Begeman

llvm-svn: 14890
 2004-07-16 19:01:13 +00:00
Misha Brukman
dffcb6ec61 Fix grammar. 
llvm-svn: 14888
 2004-07-16 17:40:28 +00:00
Alkis Evlogimenos
ddd1db50f9 Add convinience constructor for function calls with two args. 
llvm-svn: 14885
 2004-07-16 12:04:28 +00:00
Brian Gaeke
b2af4f47b6 Add a class for pseudo-instructions. Use it. 
Add IMPLICIT_USE and IMPLICIT_DEF, a la X86.

llvm-svn: 14884
 2004-07-16 10:32:10 +00:00
Brian Gaeke
ec53196516 Add what will eventually be the TSFlags. Big switch(opcode) statements are bad. 
llvm-svn: 14883
 2004-07-16 10:31:59 +00:00
Brian Gaeke
0d262c839f Add special handling for pseudo-instructions (print them as comments). 
llvm-svn: 14882
 2004-07-16 10:31:47 +00:00
Brian Gaeke
11c7052fb5 Add to-do list. 
llvm-svn: 14881
 2004-07-16 10:31:36 +00:00
Brian Gaeke
53dc31efcd Do IMPLICIT_DEFs on incoming args' hard regs, to avoid confusing the regalloc. 
Support single-fp incoming args.
Support single-fp outgoing args ('call' operands).
Support double-fp return values.

llvm-svn: 14880
 2004-07-16 10:31:25 +00:00
Chris Lattner
60fb3d60a8 The powerpc is now gone. However it is now just known as the Skeleton target. 
llvm-svn: 14877
 2004-07-16 07:14:34 +00:00
Chris Lattner
9fa6dd88db Build the skeleton target 
llvm-svn: 14875
 2004-07-16 07:11:53 +00:00
Chris Lattner
d7e3eac718 Initial checkin of the rest of the skeleton target 
llvm-svn: 14874
 2004-07-16 07:11:15 +00:00
Chris Lattner
e06b3075f2 Initial skeleton tablegen files 
llvm-svn: 14873
 2004-07-16 06:29:19 +00:00
Chris Lattner
dc42265d57 Add skeleton makefile 
llvm-svn: 14872
 2004-07-16 06:20:55 +00:00
Chris Lattner
a413633d66 Initial readme 
llvm-svn: 14871
 2004-07-16 06:12:28 +00:00
Chris Lattner
f849543948 Fix the regressions handling unnamed global variables 
llvm-svn: 14870
 2004-07-16 01:18:09 +00:00
Chris Lattner
9b03d18729 IA64 compat 
llvm-svn: 14867
 2004-07-16 00:08:28 +00:00
Chris Lattner
c014005d53 Fix IA64 compatibility 
llvm-svn: 14866
 2004-07-16 00:06:01 +00:00
Chris Lattner
53c9460cde Use new macro 
llvm-svn: 14865
 2004-07-16 00:04:54 +00:00
Chris Lattner
763d51409f Be compatible with IA64 
llvm-svn: 14864
 2004-07-16 00:04:13 +00:00
Chris Lattner
952bbd726b This patch was contributed by Daniel Berlin! 
Speed up SCCP substantially by processing overdefined values quickly.  This
patch speeds up SCCP by about 30-40% on large testcases.

llvm-svn: 14861
 2004-07-15 23:36:43 +00:00
Chris Lattner
0193bbef1f Fix PR404 try #2 
This version takes about 1s longer than the previous one (down to 2.35s),
but on the positive side, it actually works :)

llvm-svn: 14856
 2004-07-15 08:20:22 +00:00
Chris Lattner
36f2a4eb77 Nuke a clearly bogus assertion 
llvm-svn: 14854
 2004-07-15 07:44:34 +00:00
Chris Lattner
fde0e6bb95 Revert previous patch until I get a bug fixed 
llvm-svn: 14853
 2004-07-15 05:36:31 +00:00
Chris Lattner
9896dfb8e7 Fix PR404: Loop simplify is really slow on 252.eon 
This eliminates an N*N*logN algorithm from the loop simplify pass, replacing
it with a much simpler and faster alternative.  In a debug build, this reduces
gccas time on eon from 85s to 42s.

llvm-svn: 14851
 2004-07-15 04:27:04 +00:00
Chris Lattner
d7870e4b1a Fixes for PR341 
llvm-svn: 14848
 2004-07-15 02:51:32 +00:00
Chris Lattner
94212f7102 Fixes for PR341 
llvm-svn: 14847
 2004-07-15 02:51:31 +00:00
Chris Lattner
47c6a06211 Fix for PR341 
llvm-svn: 14845
 2004-07-15 02:40:04 +00:00
Chris Lattner
b9ec0b791c Revert stuff that I didn't mean to checkin 
llvm-svn: 14844
 2004-07-15 02:33:38 +00:00
Chris Lattner
bb7fe18493 Fixes for PR341 
llvm-svn: 14843
 2004-07-15 02:31:46 +00:00
Chris Lattner
d7d7bc70fd Fix for PR341 
llvm-svn: 14842
 2004-07-15 02:26:49 +00:00
Chris Lattner
c4888ccda7 Patches towards fixing PR341 
llvm-svn: 14841
 2004-07-15 02:14:30 +00:00
Chris Lattner
2db1894038 Progress on PR341 
llvm-svn: 14840
 2004-07-15 02:06:12 +00:00
Chris Lattner
0f61d55197 Fixes working towards PR341 
llvm-svn: 14839
 2004-07-15 01:50:47 +00:00
Chris Lattner
ffd5effa5f Bug fixes for PR341 
llvm-svn: 14838
 2004-07-15 01:29:12 +00:00
Chris Lattner
d1b726d18f Implement folding of expressions like 'uint cast (int* getelementptr (int* 
null, uint 1) to uint)' to a constant integer.  We can only do this with
primitive LLVM types, because other types have target-specific sizes.

llvm-svn: 14837
 2004-07-15 01:16:59 +00:00
Chris Lattner
de4449ef34 Now that we codegen the portable "sizeof" efficiently, we can use it for 
malloc lowering.  This means that lowerallocations doesn't need targetdata
anymore.  yaay.

llvm-svn: 14835
 2004-07-15 01:08:08 +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
7397a61a7f This is logically part of the last patch. Just more really horrible code 
that is made unnecessary by it.

llvm-svn: 14831
 2004-07-14 23:07:13 +00:00
Chris Lattner
d81b8323ee ** Finally DeclareNewGlobalValue is dead! 
* Simplify a lot of code because type's cannot be in function symbol tables
* Fix memory leaks in handling of redefined function prototypes
* Don't use SymbolTable directly for stuff that we can go through the Module
  for.
* Fix some minor bugs on obscure testcases like:
      test/Feature/globalredefinition.ll
* Do not create GlobalVariable objects for forward referenced Functions!
* When forward referencing a function in a constant expression, do not create
  a placeholder, add a bunch of references to it, then turn around and
  replaceAllUsesOfWith on it with a new global, deleting the placeholder.
  Instead, when we find the real definition of the global, just use the
  placeholder instead of creating a new object.

This substantially simplifies the asmwriter and should even speed it up on
cases heavy in constantexprs (like C++, Java, MSIL)...

llvm-svn: 14830
 2004-07-14 23:03:46 +00:00