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Author SHA1 Message Date
Owen Anderson
29e4d70aed Refactor a bunch of includes so that TargetMachine.h doesn't have to include 
TargetData.h.  This should make recompiles a bit faster with my current
TargetData tinkering.

llvm-svn: 28238
 2006-05-12 06:33:49 +00:00
Owen Anderson
a0a9e4584a Fix some tabbing issues. 
llvm-svn: 28237
 2006-05-12 06:06:55 +00:00
Evan Cheng
f3d7bb7a9e Backing out fix for PR770. Need to re-apply it after live range splitting is possible 
llvm-svn: 28236
 2006-05-12 06:06:34 +00:00
Evan Cheng
c24d0f281c Duh. That could take a long time. 
llvm-svn: 28235
 2006-05-12 06:05:18 +00:00
Owen Anderson
30ffff31f2 Add a new constructor to TargetData that builds a TargetData from its 
string representation.

This is part of PR 761.

llvm-svn: 28234
 2006-05-12 05:49:47 +00:00
Chris Lattner
a500852895 Two simplifications for token factor nodes: simplify tf(x,x) -> x. 
simplify tf(x,y,y,z) -> tf(x,y,z).

llvm-svn: 28233
 2006-05-12 05:01:37 +00:00
Evan Cheng
787496ebcd New scheduling test case. 
llvm-svn: 28232
 2006-05-12 01:59:17 +00:00
Evan Cheng
0b8e4bca80 Add capability to scheduler to commute nodes for profit. 
If a two-address code whose first operand has uses below, it should be commuted
when possible.

llvm-svn: 28230
 2006-05-12 01:58:24 +00:00
Evan Cheng
eb67c0f664 Typo! How did we commute nodes before?! 
llvm-svn: 28229
 2006-05-12 01:46:26 +00:00
Chris Lattner
14cdcc59b8 For extra sanity checking, fill free'd memory with garbage so we know that 
people aren't reusing machine code buffers at all.

llvm-svn: 28228
 2006-05-12 00:03:12 +00:00
Chris Lattner
ecc6d6f334 Fix some bugs in the freelist manipulation code. 
Finally, implement ExecutionEngine::freeMachineCodeForFunction.

llvm-svn: 28227
 2006-05-11 23:56:57 +00:00
Evan Cheng
cb2a0f392c Refactor scheduler code. Move register-reduction list scheduler to a 
separate file. Added an initial implementation of top-down register pressure
reduction list scheduler.

llvm-svn: 28226
 2006-05-11 23:55:42 +00:00
Chris Lattner
81a3c90080 Significantly revamp allocation of machine code to use free lists, real 
allocation policies and much more.  All this complexity, and we have no
functionality change, woo! :)

llvm-svn: 28225
 2006-05-11 23:08:08 +00:00
Chris Lattner
3fad520c62 Refactor some code, making it simpler. 
When doing the initial pass of constant folding, if we get a constantexpr,
simplify the constant expr like we would do if the constant is folded in the
normal loop.

This fixes the missed-optimization regression in
Transforms/InstCombine/getelementptr.ll last night.

llvm-svn: 28224
 2006-05-11 17:11:52 +00:00
Evan Cheng
6a08dd641a Add MOV16_rm / MOV32_rm and MOV16_mr / MOV32_mr to isLoadFromStackSlot and isStoreToStackSlot 
llvm-svn: 28223
 2006-05-11 07:33:49 +00:00
Evan Cheng
e2cebf972d Also add super- register class info. 
llvm-svn: 28222
 2006-05-11 07:31:44 +00:00
Evan Cheng
d6549daf76 Also add super- register classes info. 
llvm-svn: 28221
 2006-05-11 07:30:26 +00:00
Evan Cheng
7028ff2e25 Set weight of zero length intervals to infinite to prevent them from being 
spilled.

llvm-svn: 28220
 2006-05-11 07:29:24 +00:00
Evan Cheng
da04c3aab4 Backing out previous check-in. 
llvm-svn: 28219
 2006-05-11 07:28:16 +00:00
Owen Anderson
0fbf479d8e Fix some problems linking stuff in libTarget. 
llvm-svn: 28218
 2006-05-11 03:10:15 +00:00
Evan Cheng
03fa9eb65e If the live interval legnth is essentially zero, i.e. in every live range 
the use follows def immediately, it doesn't make sense to spill it and
hope it will be easier to allocate for this LI.

llvm-svn: 28217
 2006-05-10 22:30:41 +00:00
Evan Cheng
12417fb32c Update test case 
llvm-svn: 28216
 2006-05-10 19:53:05 +00:00
Chris Lattner
e8fe3f2a08 Two changes: 
1. Implement InstCombine/deadcode.ll by not adding instructions in unreachable
   blocks (due to constants in conditional branches/switches) to the worklist.
   This causes them to be deleted before instcombine starts up, leading to
   better optimization.

2. In the prepass over instructions, do trivial constprop/dce as we go.  This
   has the effect of improving the effectiveness of #1.  In addition, it
   *significantly* speeds up instcombine on test cases with large amounts of
   constant folding code (for example, that produced by code specialization
   or partial evaluation).  In one example, it speeds up instcombine from
   0.0589s to 0.0224s with a release build (a 2.6x speedup).

llvm-svn: 28215
 2006-05-10 19:00:36 +00:00
Chris Lattner
f99a429a12 New testcase, check that dead code doesn't pessimize instcombine 
llvm-svn: 28214
 2006-05-10 18:56:04 +00:00
Chris Lattner
085cfba0ca Fix the PowerPC JIT-only failure on UnitTests/Vector/sumarray-dbl, which is 
really a bad codegen bug that LLC happens to get lucky with. I must chat with
Nate for the proper fix.

llvm-svn: 28213
 2006-05-10 06:38:32 +00:00
Evan Cheng
9f269c1bef Templatify RegReductionPriorityQueue 
llvm-svn: 28212
 2006-05-10 06:16:44 +00:00
Chris Lattner
39290ea978 Add alloca/malloc ctors that don't take array sizes. 
llvm-svn: 28211
 2006-05-10 04:38:35 +00:00
Chris Lattner
32ddb45079 Add an assertion for a common error 
llvm-svn: 28210
 2006-05-10 04:32:43 +00:00
Evan Cheng
2af8a9f980 Watch out for the following case: 
1. Use expects a chain output.
2. Node is expanded into multiple target ops.
3. One of the inner node produces a chain, the outer most one doesn't.

llvm-svn: 28209
 2006-05-10 02:47:57 +00:00
Evan Cheng
0655b538d6 Fix a load folding bug. It is exposed by a multi- resulting instructions 
def : Pat<> pattern.

llvm-svn: 28208
 2006-05-10 00:05:46 +00:00
Nate Begeman
3af196c9b2 Fix PR773 
llvm-svn: 28207
 2006-05-09 18:20:51 +00:00
Chris Lattner
adef4bbf27 This method doesn't need to be virtual, thanks to Reid for pointing this out. 
llvm-svn: 28206
 2006-05-09 17:29:17 +00:00
Chris Lattner
486e0660b7 Fix a regression in my patch from last night that broke the llvmgcc4 build on 
ppc

llvm-svn: 28205
 2006-05-09 16:41:59 +00:00
Chris Lattner
56680711dc Indent .data/.text in the .s file 
llvm-svn: 28204
 2006-05-09 16:15:00 +00:00
Evan Cheng
0f8516a3e0 Another instruction scheduling test case 
llvm-svn: 28203
 2006-05-09 07:20:24 +00:00
Evan Cheng
1a8feb189e Add pseudo dependency to force a def&use operand to be scheduled last (unless 
the distance between the def and another use is much longer). This is under
option control for now "-sched-lower-defnuse".

llvm-svn: 28201
 2006-05-09 07:13:34 +00:00
Evan Cheng
3f72d2121b Debugging info 
llvm-svn: 28200
 2006-05-09 06:55:15 +00:00
Evan Cheng
1f5c530d04 Remove a completed entry. 
llvm-svn: 28199
 2006-05-09 06:54:05 +00:00
Evan Cheng
02e8d5f2d6 Test case for PR770 
llvm-svn: 28198
 2006-05-09 06:48:12 +00:00
Evan Cheng
aad3fe008e PR 770 - permit coallescing of registers in subset register classes. 
llvm-svn: 28197
 2006-05-09 06:37:48 +00:00
Evan Cheng
e989b1534a Added sub- register classes information. 
llvm-svn: 28196
 2006-05-09 06:35:30 +00:00
Evan Cheng
87b66b9aec Add sub-register class information. 
llvm-svn: 28195
 2006-05-09 06:34:26 +00:00
Chris Lattner
b7152b0b42 Implement MASM sections correctly, without a "has masm sections flag" and a bunch of special case code. 
llvm-svn: 28194
 2006-05-09 05:33:48 +00:00
Chris Lattner
9669e5ece6 Implement MASM sections correctly, without a "has masm sections flag" and a 
bunch of special case code.

llvm-svn: 28193
 2006-05-09 05:33:28 +00:00
Chris Lattner
28fe830b3b Oh yeah, there are two of these now, unify both. 
llvm-svn: 28192
 2006-05-09 05:24:50 +00:00
Chris Lattner
d2aea9851e Setting SwitchToSectionDirective properly in the MASM backend permits a bunch 
of code to be unified.

llvm-svn: 28191
 2006-05-09 05:23:12 +00:00
Chris Lattner
85032c8c5c MASM doesn't have one of these. 
llvm-svn: 28190
 2006-05-09 05:21:47 +00:00
Chris Lattner
830bed591e Don't prefix section directives with a tab. Doing so causes blank lines to 
be emitted to the .s file.

llvm-svn: 28189
 2006-05-09 05:19:59 +00:00
Chris Lattner
baefeb1e09 Make the masm codepath work like the normal code path. 
llvm-svn: 28188
 2006-05-09 05:15:58 +00:00
Chris Lattner
8301da3ffe Preserve prior behavior 
llvm-svn: 28187
 2006-05-09 05:15:24 +00:00