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Author SHA1 Message Date
Alkis Evlogimenos
7290ef1f5c Beautify debug output. 
llvm-svn: 11573
 2004-02-18 00:35:06 +00:00
John Criswell
49a38b9257 Added the Malloc perl benchmark license information. 
Corrected the GhostScript license information.

llvm-svn: 11571
 2004-02-17 22:58:41 +00:00
Chris Lattner
3cf6ea75e1 Bug fixed 
llvm-svn: 11567
 2004-02-17 22:00:39 +00:00
Chris Lattner
911d6bfaa8 New testcase for PR245 
llvm-svn: 11566
 2004-02-17 21:58:29 +00:00
Chris Lattner
4fa2e7a67f Fix PR245: Linking weak and strong global variables is dependent on link order 
llvm-svn: 11565
 2004-02-17 21:56:04 +00:00
Chris Lattner
d9e1a49650 When we complete the bottom-up pass, make sure to merge the globals in 'main' into 
the globals graph.

llvm-svn: 11562
 2004-02-17 19:06:47 +00:00
Chris Lattner
f2b699b98b Since tail duplication is currently neutered, we have to help the optimizer to remove the overhead of __main 
llvm-svn: 11561
 2004-02-17 18:45:06 +00:00
Chris Lattner
f58d2dd6cf Add support for GlobalAddress's for alkis 
llvm-svn: 11560
 2004-02-17 18:23:55 +00:00
Alkis Evlogimenos
c6f0651e5c These store to memory too. 
llvm-svn: 11558
 2004-02-17 17:53:48 +00:00
Chris Lattner
ea22a3de13 Remove the -disable-kill option. The register allocator is buggy with it, 
and it was only for debugging in the first place.

llvm-svn: 11557
 2004-02-17 17:49:10 +00:00
Chris Lattner
88271db3bc These store to memory, not read from it. 
llvm-svn: 11556
 2004-02-17 17:46:50 +00:00
John Criswell
d5ef827012 Added espresso. 
llvm-svn: 11555
 2004-02-17 17:07:52 +00:00
Alkis Evlogimenos
0528c59353 Instructiosn with 1 memory operand have 4 operands in our 
representation.. duh!

llvm-svn: 11554
 2004-02-17 15:58:13 +00:00
Alkis Evlogimenos
b1a61b72f2 Align case statements. 
llvm-svn: 11552
 2004-02-17 15:50:41 +00:00
Alkis Evlogimenos
b815fd46ec Add TEST and XCHG memory operand support. 
llvm-svn: 11550
 2004-02-17 15:48:42 +00:00
Alkis Evlogimenos
32a5b0fd6c Add OR and XOR memory operand support. 
llvm-svn: 11549
 2004-02-17 15:33:14 +00:00
Alkis Evlogimenos
1e4b3b3c9b Peephole optimize SUBmi{16,32} into SUBmi{16,32}b when immediate is 8 
bits wide.

llvm-svn: 11548
 2004-02-17 15:14:29 +00:00
Alkis Evlogimenos
4f22bb4d4b ADDmi{16,32} should be in the next case statement. 
llvm-svn: 11547
 2004-02-17 15:10:11 +00:00
Alkis Evlogimenos
135c4faa55 Add memory operand folding support for MUL, DIV, IDIV, NEG, NOT, 
MOVSX, and MOVZX.

llvm-svn: 11546
 2004-02-17 09:14:23 +00:00
Alkis Evlogimenos
e7bbd1c2fb Add memory operand folding for CMP{rm,mr,mi}{8,16,32}, INCm{8,16,32} 
and DECm{8,16,32} instructions.

llvm-svn: 11545
 2004-02-17 08:49:20 +00:00
Alkis Evlogimenos
d7e3cc8d65 Add CMP{rm,mr,mi}{8,16,32}, INCm{8,16,32} and DECm{8,16,32} instructions. 
llvm-svn: 11544
 2004-02-17 08:49:00 +00:00
Alkis Evlogimenos
638db7b5aa Add SUB{rm,mr,mi}{8,16,32} instructions. 
llvm-svn: 11543
 2004-02-17 08:17:40 +00:00
Chris Lattner
a4e0020e54 Add support to the local allocator for fusing spill code into the instructions 
that need them.  This is very useful on CISCy targets like the X86 because it
reduces the total spill pressure, and makes better use of it's (large)
instruction set.  Though the X86 backend doesn't know how to rewrite many
instructions yet, this already makes a substantial difference on 176.gcc for
example:

Before:
Time:
   8.0099 ( 31.2%)   0.0100 ( 12.5%)   8.0199 ( 31.2%)   7.7186 ( 30.0%)  Local Register Allocator

Code quality:
734559 asm-printer           - Number of machine instrs printed
111395 ra-local              - Number of registers reloaded
 79902 ra-local              - Number of registers spilled
231554 x86-peephole          - Number of peephole optimization performed

After:
Time:
   7.8700 ( 30.6%)   0.0099 ( 19.9%)   7.8800 ( 30.6%)   7.7892 ( 30.2%)  Local Register Allocator
Code quality:
733083 asm-printer           - Number of machine instrs printed
  2379 ra-local              - Number of reloads fused into instructions
109046 ra-local              - Number of registers reloaded
 79881 ra-local              - Number of registers spilled
230658 x86-peephole          - Number of peephole optimization performed

So by fusing 2300 instructions, we reduced the  static number of instructions
by 1500, and reduces the number of peepholes (and thus the work) by about 900.
This also clearly reduces the number of reload/spill instructions that are
emitted.

llvm-svn: 11542
 2004-02-17 08:09:40 +00:00
Alkis Evlogimenos
5aa39e1583 Add support for folding memory operands for ADC, SBB and SUB instructions. 
llvm-svn: 11541
 2004-02-17 08:08:51 +00:00
Alkis Evlogimenos
28691e063b Add support for ADC{rm.mr}32 and SBB{rm,mr}32. 
llvm-svn: 11540
 2004-02-17 08:06:31 +00:00
Chris Lattner
eb1428d581 Add a (hidden) option to print instructions that fail to fuse. It's looking 
like compares and test's would be the next huge win...

llvm-svn: 11539
 2004-02-17 08:03:47 +00:00
Alkis Evlogimenos
19248dd757 Add support for folding memory operands in MOVri{8,16,32} instructions. 
llvm-svn: 11538
 2004-02-17 07:47:20 +00:00
Chris Lattner
c4ea4d12bf Expand the repertoire of the forms we can print and encode. 
llvm-svn: 11537
 2004-02-17 07:40:44 +00:00
Chris Lattner
029dec8f3e Disable this peephole for now. We can't keep track of the fact that the immediate is 8 bits, 
but the memory reference is full sized.

llvm-svn: 11536
 2004-02-17 07:36:32 +00:00
Chris Lattner
f93308ec17 Fix a bug in my previous refactoring change... arg! 
llvm-svn: 11535
 2004-02-17 07:02:17 +00:00
Chris Lattner
194353930c The CBE is now in llc, not llvm-dis 
llvm-svn: 11534
 2004-02-17 06:40:51 +00:00
Chris Lattner
62f67310f1 The C backend is no longer in llvm-dis, it's in llc 
llvm-svn: 11533
 2004-02-17 06:40:06 +00:00
Chris Lattner
f877cd09d0 The CBE is no longer in llvm-dis 
llvm-svn: 11532
 2004-02-17 06:39:48 +00:00
Chris Lattner
a9493ad718 Add an option to disable spill fusing in the X86 backend 
llvm-svn: 11531
 2004-02-17 06:30:34 +00:00
Chris Lattner
d4b2f4ef32 Fix the mneumonics for the mov instructions to have the source and destination 
order in the correct sense!! Arg!

llvm-svn: 11530
 2004-02-17 06:28:19 +00:00
Chris Lattner
5757579731 Fix the last crimes against nature that used the 'ir' ordering to use the 
'ri' ordering instead... no it's not possible to store a register into an
immediate!

llvm-svn: 11529
 2004-02-17 06:24:02 +00:00
Chris Lattner
4682990fa5 GRRR. Move instructions have swapped the order of the r/m operands. 
llvm-svn: 11528
 2004-02-17 06:20:20 +00:00
Chris Lattner
16666f8bd2 Rename MOVi[mr] instructions to MOV[rm]i 
llvm-svn: 11527
 2004-02-17 06:16:44 +00:00
Chris Lattner
1db99b1949 Whoops, got my cases swapped. 
llvm-svn: 11526
 2004-02-17 06:02:15 +00:00
Chris Lattner
e227ae6b88 Change to match the newer, simpler, interface 
llvm-svn: 11525
 2004-02-17 05:54:57 +00:00
Chris Lattner
affbcb6be5 Simplify and document the new interface 
llvm-svn: 11524
 2004-02-17 05:54:26 +00:00
Chris Lattner
b82bb37952 Add support for folding memory operands into AND and IMUL's 
llvm-svn: 11523
 2004-02-17 05:46:06 +00:00
Chris Lattner
48e19d8b8e Scrunchify code, by adding helpers. No functionality changes. 
llvm-svn: 11522
 2004-02-17 05:35:13 +00:00
Chris Lattner
9751eb8ab9 Add mem forms of AND instructions 
llvm-svn: 11521
 2004-02-17 05:25:50 +00:00
Alkis Evlogimenos
a479dc4715 Add LiveIntervals::Interval::empty() member function. 
llvm-svn: 11520
 2004-02-17 05:14:37 +00:00
Alkis Evlogimenos
c4ec9111bb Add API to check and fold memory operands into instructions. 
llvm-svn: 11519
 2004-02-17 04:33:18 +00:00
Chris Lattner
3c514e8a54 Rename the IMULri* instructions to IMULrri, as they are actually three address 
instructions.  Add forms of these instructions that read from memory

llvm-svn: 11518
 2004-02-17 04:26:43 +00:00
Chris Lattner
bb0cfb0429 Once we have a way to fold spill code reloads into instructions, we have a way to use it. :) 
llvm-svn: 11517
 2004-02-17 04:08:37 +00:00
Alkis Evlogimenos
c6ea9a6b65 Fix spilled interval update. It was too conservative. 
llvm-svn: 11516
 2004-02-17 04:04:20 +00:00
Chris Lattner
7b3342d814 Refactor code a bit. No functionality changes, though the comment hints at things to come. 
llvm-svn: 11515
 2004-02-17 03:57:19 +00:00