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14255 Commits

Author SHA1 Message Date
Chris Lattner
03ea4c8326 Dead variable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28265 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 21:12:22 +00:00
Chris Lattner
b65e7256ed Remove dead var, fix bad override. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28264 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 21:09:57 +00:00
Evan Cheng
3b6d56cab3 If the register allocator cannot find a register to spill, try the aliases. If 
that still fails (because all the register spill weights are inf), just grab
one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28262 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 19:07:46 +00:00
Evan Cheng
0bbac9ffd1 Remove dead code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28261 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 19:03:56 +00:00
Chris Lattner
095cc37e22 Fix accidentally committed patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28260 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:20:39 +00:00
Chris Lattner
666b042658 Actually override the right method. :) 
Bug identified by coverity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28259 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:19:25 +00:00
Chris Lattner
dd28ba2284 remove dead variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28258 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:17:25 +00:00
Chris Lattner
2b80e8d635 Fix iterator invalidation bug, identified by Coverity. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28257 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:13:11 +00:00
Chris Lattner
bbea1245a1 Fix a hypothetical memory leak, identified by Coverity. In practice, this 
object is never deleted though.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28256 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:10:12 +00:00
Chris Lattner
b5d9319bc5 Remove dead vars 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28255 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:06:45 +00:00
Chris Lattner
f1343c1b79 remove dead vars 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28254 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:04:28 +00:00
Chris Lattner
c485e55c65 Remove dead variable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28253 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:02:04 +00:00
Chris Lattner
5eed34d208 Comment out dead variables 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28252 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 17:57:54 +00:00
Reid Spencer
ffb4d62720 When reading the symbol table, make sure to delete the ArchiveMember 
created by reading the symbol table.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28251 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 17:56:20 +00:00
Chris Lattner
9dcb780e23 Remove dead var 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28250 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 17:50:35 +00:00
Chris Lattner
82db0696a1 Remove dead variable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28249 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 17:41:45 +00:00
Chris Lattner
b57b516f6d remove dead variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28248 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 17:33:59 +00:00
Chris Lattner
27aaa398ee Remove dead variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28247 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 17:31:21 +00:00
Chris Lattner
e41102bb61 Compile: 
%tmp152 = setgt uint %tmp144, %tmp149           ; <bool> [#uses=1]
        %tmp159 = setlt uint %tmp144, %tmp149           ; <bool> [#uses=1]
        %bothcond2 = or bool %tmp152, %tmp159           ; <bool> [#uses=1]

To setne, not setune, which causes an assertion fault.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28244 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 17:03:46 +00:00
Chris Lattner
0949ed5412 Fix PowerPC/2006-05-12-rlwimi-crash.ll 
Nate, please verify that if InsertMask is 0, rlwimi shouldn't be used.
This fixes the crash and causes no PPC testsuite regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28243 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 16:29:37 +00:00
Owen Anderson
2577c22131 Add a method to generate a string representation from a TargetData. 
This continues the work on PR 761.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28239 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 07:01:44 +00:00
Owen Anderson
07000c6f01 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28238 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 06:33:49 +00:00
Owen Anderson
571a13f3e7 Fix some tabbing issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28237 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 06:06:55 +00:00
Evan Cheng
647c15e58e Backing out fix for PR770. Need to re-apply it after live range splitting is possible 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28236 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 06:06:34 +00:00
Evan Cheng
626da3d9ae Duh. That could take a long time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28235 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 06:05:18 +00:00
Owen Anderson
8f60c56a06 Add a new constructor to TargetData that builds a TargetData from its 
string representation.

This is part of PR 761.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28234 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 05:49:47 +00:00
Chris Lattner
21a57dc751 Two simplifications for token factor nodes: simplify tf(x,x) -> x. 
simplify tf(x,y,y,z) -> tf(x,y,z).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28233 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 05:01:37 +00:00
Evan Cheng
13d41b9d72 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28230 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 01:58:24 +00:00
Evan Cheng
31ff1ff348 Typo! How did we commute nodes before?! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28229 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 01:46:26 +00:00
Chris Lattner
a5f0419b4e For extra sanity checking, fill free'd memory with garbage so we know that 
people aren't reusing machine code buffers at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28228 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 00:03:12 +00:00
Chris Lattner
9f3d1ba9ad Fix some bugs in the freelist manipulation code. 
Finally, implement ExecutionEngine::freeMachineCodeForFunction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28227 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-11 23:56:57 +00:00
Evan Cheng
e165a78551 Refactor scheduler code. Move register-reduction list scheduler to a 
separate file. Added an initial implementation of top-down register pressure
reduction list scheduler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28226 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-11 23:55:42 +00:00
Chris Lattner
e993cc27ad 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! :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28225 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-11 23:08:08 +00:00
Chris Lattner
8c8c66a8cd 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28224 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-11 17:11:52 +00:00
Evan Cheng
f4df680ad4 Add MOV16_rm / MOV32_rm and MOV16_mr / MOV32_mr to isLoadFromStackSlot and isStoreToStackSlot 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28223 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-11 07:33:49 +00:00
Evan Cheng
993141402f Set weight of zero length intervals to infinite to prevent them from being 
spilled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28220 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-11 07:29:24 +00:00
Evan Cheng
5d02eafaf2 Backing out previous check-in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28219 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-11 07:28:16 +00:00
Evan Cheng
1f300190f3 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28217 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-10 22:30:41 +00:00
Chris Lattner
f4f5a77fdc 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28215 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-10 19:00:36 +00:00
Chris Lattner
3e6a35076e 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28213 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-10 06:38:32 +00:00
Evan Cheng
90db0358bb Templatify RegReductionPriorityQueue 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28212 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-10 06:16:44 +00:00
Chris Lattner
e46749cce0 Add an assertion for a common error 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28210 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-10 04:32:43 +00:00
Nate Begeman
ec57fd91af Fix PR773 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28207 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 18:20:51 +00:00
Chris Lattner
c8d37c6e14 Fix a regression in my patch from last night that broke the llvmgcc4 build on 
ppc


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28205 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 16:41:59 +00:00
Chris Lattner
219f1b535d Indent .data/.text in the .s file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28204 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 16:15:00 +00:00
Evan Cheng
b63b067925 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".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28201 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 07:13:34 +00:00
Evan Cheng
60e8c71c9f Debugging info 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28200 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 06:55:15 +00:00
Evan Cheng
8399c5cbe4 Remove a completed entry. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28199 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 06:54:05 +00:00
Evan Cheng
e73701df94 PR 770 - permit coallescing of registers in subset register classes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28197 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 06:37:48 +00:00
Chris Lattner
7faec9b93a Implement MASM sections correctly, without a "has masm sections flag" and a bunch of special case code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28194 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:33:48 +00:00
Chris Lattner
a7090ae7a3 Oh yeah, there are two of these now, unify both. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28192 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:24:50 +00:00
Chris Lattner
b81cb6133e Setting SwitchToSectionDirective properly in the MASM backend permits a bunch 
of code to be unified.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28191 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:23:12 +00:00
Chris Lattner
c9260a1556 MASM doesn't have one of these. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28190 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:21:47 +00:00
Chris Lattner
23b9eac4cb Don't prefix section directives with a tab. Doing so causes blank lines to 
be emitted to the .s file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28189 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:19:59 +00:00
Chris Lattner
13f161c518 Make the masm codepath work like the normal code path. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28188 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:15:58 +00:00
Chris Lattner
e7027d5339 Preserve prior behavior 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28187 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:15:24 +00:00
Chris Lattner
4ca4bb1ed2 The MASM asmprinter has been fixed, these hacks are no longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28186 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:13:34 +00:00
Chris Lattner
dad9c5a14f Fix the MASM asmprinter's lies. It does not want to emit code to .text/.data 
it wants it emitted to _text/_data.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28185 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 05:12:53 +00:00
Chris Lattner
4632d7a570 Split SwitchSection into SwitchTo{Text|Data}Section methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28184 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 04:59:56 +00:00
Chris Lattner
4c15e33946 Some notes and thoughts to myself 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28182 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 04:58:46 +00:00
Chris Lattner
8d89e7bdbc Patch to make some xforms preserve each other. Patch contributed by 
Domagoj Babic!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28181 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-09 04:13:41 +00:00
Chris Lattner
e7fd553b3b Move some methods out of line so that MutexGuard.h isn't needed in a public header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28179 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 22:00:52 +00:00
Chris Lattner
9fd868ae0a Another bad case I noticed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28177 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 21:39:45 +00:00
Chris Lattner
8ef67ac3c3 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28176 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 21:24:21 +00:00
Chris Lattner
4b37e87ab9 Make the case I just checked in stronger. Now we compile this: 
short test2(short X, short x) {
  int Y = (short)(X+x);
  return Y >> 1;
}

to:

_test2:
        add r2, r3, r4
        extsh r2, r2
        srawi r3, r2, 1
        blr

instead of:

_test2:
        add r2, r3, r4
        extsh r2, r2
        srwi r2, r2, 1
        extsh r3, r2
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28175 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 21:18:59 +00:00
Chris Lattner
eaeda56649 Implement and_sext.ll:test3, generating: 
_test4:
        srawi r3, r3, 16
        blr

instead of:

_test4:
        srwi r2, r3, 16
        extsh r3, r2
        blr

for:

short test4(unsigned X) {
  return (X >> 16);
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28174 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 20:59:41 +00:00
Nate Begeman
7514620052 Yet more readme updating 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28172 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 20:54:02 +00:00
Chris Lattner
a850446a0b Compile this: 
short test4(unsigned X) {
  return (X >> 16);
}

to:

_test4:
        movl 4(%esp), %eax
        sarl $16, %eax
        ret

instead of:

_test4:
        movl $-65536, %eax
        andl 4(%esp), %eax
        sarl $16, %eax
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28171 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 20:51:54 +00:00
Nate Begeman
fcf64a91d6 New note about something bad happening in target independent optimizers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28170 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 20:08:28 +00:00
Nate Begeman
d8624ed07f Proving once again that I am not as smart as the compiler 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28169 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 19:09:24 +00:00
Nate Begeman
4667f2cbad Fold more shifts into inserts, and update the README 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28168 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 17:38:32 +00:00
Chris Lattner
2cfd6746ae Fold shifts with undef operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28167 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 17:29:49 +00:00
Chris Lattner
1b7371331f When tracking demanded bits, if any bits from the sext of an SRA are demanded, 
then so is the input sign bit.  This fixes mediabench/g721 on X86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28166 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 17:22:53 +00:00
Nate Begeman
17c275ff2c Make emission of jump tables a bit less conservative; they are now required 
to be only 31.25% dense, rather than 75% dense.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28165 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 16:51:36 +00:00
Evan Cheng
403be7eafc Fixing truncate. Previously we were emitting truncate from r16 to r8 as 
movw. That is we promote the destination operand to r16. So
        %CH = TRUNC_R16_R8 %BP
is emitted as
        movw %bp, %cx.

This is incorrect. If %cl is live, it would be clobbered.
Ideally we want to do the opposite, that is emitted it as
        movb ??, %ch
But this is not possible since %bp does not have a r8 sub-register.

We are now defining a new register class R16_ which is a subclass of R16
containing only those 16-bit registers that have r8 sub-registers (i.e.
AX - DX). We isel the truncate to two instructions, a MOV16to16_ to copy the
value to the R16_ class, followed by a TRUNC_R16_R8.

Due to bug 770, the register colaescer is not going to coalesce between R16 and
R16_. That will be fixed later so we can eliminate the MOV16to16_. Right now, it
can only be eliminated if we are lucky that source and destination registers are
the same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28164 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 08:01:26 +00:00
Nate Begeman
93376b083e Update some stuff now that the new rlwimi code has gone in 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28162 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 02:52:38 +00:00
Nate Begeman
5c742681ed Fix PR772 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28161 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-08 01:35:01 +00:00
Evan Cheng
74811450b2 Typo's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28158 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-07 10:10:20 +00:00
Jeff Cohen
e564de2d37 Unlike Unix, Windows won't let a file be implicitly replaced via renaming without explicit permission. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28157 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-07 02:51:51 +00:00
Nate Begeman
77f361f5b3 New rlwimi implementation, which is superior to the old one. There are 
still a couple missed optimizations, but we now generate all the possible
rlwimis for multiple inserts into the same bitfield.  More regression tests
to come.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28156 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-07 00:23:38 +00:00
Chris Lattner
822db93e57 Use ComputeMaskedBits to determine # sign bits as a fallback. This allows us 
to handle all kinds of stuff, including silly things like:
sextinreg(setcc,i16) -> setcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28155 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 23:48:13 +00:00
Chris Lattner
e60351bb72 Add some more sign propagation cases 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28154 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 23:40:29 +00:00
Jeff Cohen
943b9b6651 Apply bug fix supplied by Greg Pettyjohn for a bug he found: '<invalid>' is not a legal path on Windows. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28153 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 23:25:53 +00:00
Chris Lattner
310b578023 Simplify some code, add a couple minor missed folds 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28152 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 23:06:26 +00:00
Chris Lattner
b9ebacdb4d constant fold sign_extend_inreg 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28151 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 23:05:41 +00:00
Chris Lattner
541a24f7af remove cases handled elsewhere 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28150 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 22:43:44 +00:00
Chris Lattner
d6f7fe76a6 Add some more simple sign bit propagation cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28149 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 22:39:59 +00:00
Jeff Cohen
d43b18d9e4 Fix some loose ends in MASM support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28148 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 21:27:14 +00:00
Chris Lattner
ee4ea92358 Use the new TargetLowering::ComputeNumSignBits method to eliminate 
sign_extend_inreg operations.  Though ComputeNumSignBits is still rudimentary,
this is enough to compile this:

short test(short X, short x) {
  int Y = X+x;
  return (Y >> 1);
}
short test2(short X, short x) {
  int Y = (short)(X+x);
  return Y >> 1;
}

into:

_test:
        add r2, r3, r4
        srawi r3, r2, 1
        blr
_test2:
        add r2, r3, r4
        extsh r2, r2
        srawi r3, r2, 1
        blr

instead of:

_test:
        add r2, r3, r4
        srawi r2, r2, 1
        extsh r3, r2
        blr
_test2:
        add r2, r3, r4
        extsh r2, r2
        srawi r2, r2, 1
        extsh r3, r2
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28146 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 09:30:03 +00:00
Chris Lattner
5c3e21d687 Add some really really simple code for computing sign-bit propagation. 
This will certainly be enhanced in the future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28145 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 09:27:13 +00:00
Chris Lattner
f0df8824eb When inserting casts, be careful of where we put them. We cannot insert 
a cast immediately before a PHI node.

This fixes Regression/CodeGen/Generic/2006-05-06-GEP-Cast-Sink-Crash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28143 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 09:10:37 +00:00
Chris Lattner
33a6113995 Move some code around. 
Make the "fold (and (cast A), (cast B)) -> (cast (and A, B))" transformation
only apply when both casts really will cause code to be generated.  If one or
both doesn't, then this xform doesn't remove a cast.

This fixes Transforms/InstCombine/2006-05-06-Infloop.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28141 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 09:00:16 +00:00
Chris Lattner
80a7ecc923 Teach the X86 backend about non-i32 inline asm register classes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28139 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 00:29:37 +00:00
Chris Lattner
c93dfda905 Fold (trunc (srl x, c)) -> (srl (trunc x), c) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28138 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-06 00:11:52 +00:00
Chris Lattner
b72773bb88 Fold trunc(any_ext). This gives stuff like: 
27,28c27
<       movzwl %di, %edi
<       movl %edi, %ebx
---
>       movw %di, %bx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28137 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 22:56:26 +00:00
Chris Lattner
06afe07037 Shrink shifts when possible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28136 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 22:53:17 +00:00
Chris Lattner
fe8babf689 Implement ComputeMaskedBits/SimplifyDemandedBits for ISD::TRUNCATE 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28135 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 22:32:12 +00:00
Chris Lattner
35c3913328 Print a grouping around inline asm blocks so that we can tell when we are 
using them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28134 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 21:50:04 +00:00
Chris Lattner
7660ebc90a Print *some* grouping around inline asm blocks so we know where they are. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28133 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 21:48:50 +00:00
Chris Lattner
1c05997bd8 Indent multiline asm strings more nicely 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28132 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 21:47:05 +00:00
Chris Lattner
bd04aa5796 Teach the code generator to use cvtss2sd as extload f32 -> f64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28131 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 21:35:18 +00:00
Chris Lattner
e564dbb51c Fold (fpext (load x)) -> (extload x) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28130 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 21:34:35 +00:00
Chris Lattner
903236468c More aggressively sink GEP offsets into loops. For example, before we 
generated:

        movl 8(%esp), %eax
        movl %eax, %edx
        addl $4316, %edx
        cmpb $1, %cl
        ja LBB1_2       #cond_false
LBB1_1: #cond_true
        movl L_QuantizationTables720$non_lazy_ptr, %ecx
        movl %ecx, (%edx)
        movl L_QNOtoQuantTableShift720$non_lazy_ptr, %edx
        movl %edx, 4460(%eax)
        ret
...

Now we generate:

        movl 8(%esp), %eax
        cmpb $1, %cl
        ja LBB1_2       #cond_false
LBB1_1: #cond_true
        movl L_QuantizationTables720$non_lazy_ptr, %ecx
        movl %ecx, 4316(%eax)
        movl L_QNOtoQuantTableShift720$non_lazy_ptr, %ecx
        movl %ecx, 4460(%eax)
        ret

... which uses one fewer register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28129 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 21:17:49 +00:00
Chris Lattner
581a7ad7c9 Fix an infinite loop compiling oggenc last night. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28128 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 20:51:30 +00:00
Evan Cheng
4713724eda Need extload patterns after Chris' DAG combiner changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28127 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 08:23:07 +00:00
Chris Lattner
6fc205fc44 Implement InstCombine/cast.ll:test29 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28126 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 06:39:07 +00:00
Chris Lattner
0d8dae749c Fold some common code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28124 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 06:32:04 +00:00
Chris Lattner
540121f1ec Implement: 
// fold (and (sext x), (sext y)) -> (sext (and x, y))
  // fold (or  (sext x), (sext y)) -> (sext (or  x, y))
  // fold (xor (sext x), (sext y)) -> (sext (xor x, y))
  // fold (and (aext x), (aext y)) -> (aext (and x, y))
  // fold (or  (aext x), (aext y)) -> (aext (or  x, y))
  // fold (xor (aext x), (aext y)) -> (aext (xor x, y))


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28123 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 06:31:05 +00:00
Chris Lattner
a3dc3f692c Pull and through and/or/xor. This compiles some bitfield code to: 
mov EAX, DWORD PTR [ESP + 4]
        mov ECX, DWORD PTR [EAX]
        mov EDX, ECX
        add EDX, EDX
        or EDX, ECX
        and EDX, -2147483648
        and ECX, 2147483647
        or EDX, ECX
        mov DWORD PTR [EAX], EDX
        ret

instead of:

        sub ESP, 4
        mov DWORD PTR [ESP], ESI
        mov EAX, DWORD PTR [ESP + 8]
        mov ECX, DWORD PTR [EAX]
        mov EDX, ECX
        add EDX, EDX
        mov ESI, ECX
        and ESI, -2147483648
        and EDX, -2147483648
        or EDX, ESI
        and ECX, 2147483647
        or EDX, ECX
        mov DWORD PTR [EAX], EDX
        mov ESI, DWORD PTR [ESP]
        add ESP, 4
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28122 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 06:10:43 +00:00
Chris Lattner
5ffc066912 Implement a variety of simplifications for ANY_EXTEND. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28121 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 05:58:59 +00:00
Chris Lattner
35e5c14b80 Factor some code, add these transformations: 
// fold (and (trunc x), (trunc y)) -> (trunc (and x, y))
  // fold (or  (trunc x), (trunc y)) -> (trunc (or  x, y))
  // fold (xor (trunc x), (trunc y)) -> (trunc (xor x, y))


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28120 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 05:51:50 +00:00
Evan Cheng
8f7f7125e9 Better implementation of truncate. ISel matches it to a pseudo instruction 
that gets emitted as movl (for r32 to i16, i8) or a movw (for r16 to i8). And
if the destination gets allocated a subregister of the source operand, then
the instruction will not be emitted at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28119 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 05:40:20 +00:00
Chris Lattner
55c63257f3 New note, Nate, please check to see if I'm full of it :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28118 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 05:36:15 +00:00
Jeff Cohen
4b75e73791 Fix VC++ compilation error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28117 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 01:47:05 +00:00
Chris Lattner
7e598096ea Sink noop copies into the basic block that uses them. This reduces the number 
of cross-block live ranges, and allows the bb-at-a-time selector to always
coallesce these away, at isel time.

This reduces the load on the coallescer and register allocator.  For example
on a codec on X86, we went from:

   1643 asm-printer           - Number of machine instrs printed
    419 liveintervals         - Number of loads/stores folded into instructions
   1144 liveintervals         - Number of identity moves eliminated after coalescing
   1022 liveintervals         - Number of interval joins performed
    282 liveintervals         - Number of intervals after coalescing
   1304 liveintervals         - Number of original intervals
     86 regalloc              - Number of times we had to backtrack
1.90232 regalloc              - Ratio of intervals processed over total intervals
     40 spiller               - Number of values reused
    182 spiller               - Number of loads added
    121 spiller               - Number of stores added
    132 spiller               - Number of register spills
      6 twoaddressinstruction - Number of instructions commuted to coalesce
    360 twoaddressinstruction - Number of two-address instructions

to:

   1636 asm-printer           - Number of machine instrs printed
    403 liveintervals         - Number of loads/stores folded into instructions
   1155 liveintervals         - Number of identity moves eliminated after coalescing
   1033 liveintervals         - Number of interval joins performed
    279 liveintervals         - Number of intervals after coalescing
   1312 liveintervals         - Number of original intervals
     76 regalloc              - Number of times we had to backtrack
1.88998 regalloc              - Ratio of intervals processed over total intervals
      1 spiller               - Number of copies elided
     41 spiller               - Number of values reused
    191 spiller               - Number of loads added
    114 spiller               - Number of stores added
    128 spiller               - Number of register spills
      4 twoaddressinstruction - Number of instructions commuted to coalesce
    356 twoaddressinstruction - Number of two-address instructions

On this testcase, this change provides a modest reduction in spill code,
regalloc iterations, and total instructions emitted.  It increases the number
of register coallesces.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28115 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-05 01:04:50 +00:00
Chris Lattner
b93b0347d8 Adjust to use proper TargetData copy ctor 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28112 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 21:18:40 +00:00
Chris Lattner
6e994b7492 Final pass of minor cleanups for MachineInstr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28110 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 19:36:09 +00:00
Evan Cheng
14a6db8bd9 Initial support for register pressure aware scheduling. The register reduction 
scheduler can go into a "vertical mode" (i.e. traversing up the two-address
chain, etc.) when the register pressure is low.
This does seem to reduce the number of spills in the cases I've looked at. But
with x86, it's no guarantee the performance of the code improves.
It can be turned on with -sched-vertically option.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28108 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 19:16:39 +00:00
Chris Lattner
943b5e117f Remove redundancy and a level of indirection when creating machine operands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28107 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 19:14:44 +00:00
Chris Lattner
8b915b4ed2 Remove and simplify some more machineinstr/machineoperand stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28105 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 18:16:01 +00:00
Chris Lattner
2d90ac7ca6 Rename MO_VirtualRegister -> MO_Register. Clean up immediate handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28104 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 18:05:43 +00:00
Chris Lattner
e53f4a055f Move some methods out of MachineInstr into MachineOperand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28102 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 17:52:23 +00:00
Chris Lattner
e3158308e0 Fix Transforms/InstCombine/2006-05-04-DemandedBitCrash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28101 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 17:33:35 +00:00
Chris Lattner
63b3d7113d There shalt be only one "immediate" operand type! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28099 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 17:21:20 +00:00
Chris Lattner
ceb408f6a2 Change "value" in MachineOperand to be a GlobalValue, as that is the only 
thing that can be in it.  Remove a dead method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28098 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 17:02:51 +00:00
Chris Lattner
e45aa737ba Revert Nate's CR patch from last night, which caused many regressions (e.g. fhourstones). 
Loading and storing off R0 isn't what we wanted.  Also, taking some CR's out of
CRRC seems to cause failures as well.  Further investigation is required.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28097 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 16:56:45 +00:00
Jeff Cohen
10efcfabf1 Make external globals public; other minor cleanup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28096 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 16:20:22 +00:00
Jeff Cohen
a6e24d8caf Make Intel syntax the default when LLVM is built with VC++. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28095 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 16:19:27 +00:00
Chris Lattner
4efeab208c Remove a bunch more dead V9 specific stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28094 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 01:26:39 +00:00
Chris Lattner
ea50fabfd4 Remove a bunch more SparcV9 specific stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28093 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 01:15:02 +00:00
Chris Lattner
34fb2cad46 Remove some more V9-specific stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28092 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 00:49:59 +00:00
Chris Lattner
10f3597c4e Remove some more unused stuff from MachineInstr that was leftover from V9. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28091 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 00:44:25 +00:00
Chris Lattner
0e57629a93 Simplify handling of relocations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28090 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-04 00:42:08 +00:00
Evan Cheng
9e062ed516 Use movsd to shuffle in the lowest two elements of a v4f32 / v4i32 vector when 
movlps cannot be used (e.g. when load from m64 has multiple uses).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28089 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 20:32:03 +00:00
Chris Lattner
5a032de387 Change from using MachineRelocation ctors to using static methods 
in MachineRelocation to create Relocations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28088 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 20:30:20 +00:00
Chris Lattner
d2d5c76753 minor cleanups, no functionality change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28087 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 18:55:56 +00:00
Chris Lattner
93e5c284d7 inline a simple method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28083 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 17:21:32 +00:00
Chris Lattner
b4432f3d47 Suck block address tracking out of targets into the JIT Emitter. This 
simplifies the MachineCodeEmitter interface just a little bit and makes
BasicBlocks work like constant pools and jump tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28082 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 17:10:41 +00:00
Chris Lattner
5c488182da Fix a bug in Owen's checkin that broke the CBE on all non sparc v9 platforms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28081 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 05:48:41 +00:00
Nate Begeman
67977ad19c Teach the x86 jit how to handle jump tables not directly used by a jump 
instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28080 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 04:52:47 +00:00
Nate Begeman
f4360a4789 Finish up the initial jump table implementation by allowing jump tables to 
not be 100% dense.  Increase the minimum threshold for the number of cases
in a switch statement from 4 to 6 in order to create a jump table.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28079 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 03:48:02 +00:00
Evan Cheng
c9a83a45ba Bottom up register pressure reduction work: clean up some hacks and enhanced 
the heuristic to further reduce spills for several test cases. (Note, it may
not necessarily translate to runtime win!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28076 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 02:10:45 +00:00
Owen Anderson
a69571c799 Refactor TargetMachine, pushing handling of TargetData into the target-specific subclasses. This has one caller-visible change: getTargetData() now returns a pointer instead of a reference. 
This fixes PR 759.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28074 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 01:29:57 +00:00
Chris Lattner
0eb4d6b52e Align function bodies correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28073 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 01:03:20 +00:00
Chris Lattner
e6fdcbfc47 Simplify some code. Don't add memory blocks to the Blocks list twice. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28071 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 00:54:49 +00:00
Chris Lattner
9b4c96d45d Add assertions that verify that the actual arguments to a call or invoke match 
the prototype of the called function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28070 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 00:48:22 +00:00
Chris Lattner
af1563fb62 Change the BasicBlockAddrs map to be a vector, indexed by MBB number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28069 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 00:32:55 +00:00
Chris Lattner
23118b649e Keep the alpha JIT similar to the PPC/X86 jits 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28068 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 00:31:21 +00:00
Chris Lattner
32ca55f3bc Simplify some code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28066 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-03 00:13:06 +00:00
Chris Lattner
f75f9be3fb Several related changes: 
1. Change several methods in the MachineCodeEmitter class to be pure virtual.
2. Suck emitConstantPool/initJumpTableInfo into startFunction, removing them
   from the MachineCodeEmitter interface, and reducing the amount of target-
   specific code.
3. Change the JITEmitter so that it allocates constantpools and jump tables
   *right* next to the functions that they belong to, instead of in a separate
   pool of memory.  This makes all memory for a function be contiguous, and
   means the JITEmitter only tracks one block of memory now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28065 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-02 23:22:24 +00:00