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3221 Commits

Author SHA1 Message Date
Evan Cheng
3ba433a7e8 Add methods to add implicit def use operands to a MI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31675 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-11 10:20:02 +00:00
Chris Lattner
41e53fd39b disallow preinc of a frameindex. This is not profitable and causes 2-addr 
pass to explode.  This fixes a bunch of llc-beta failures on ppc last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31661 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-11 01:00:15 +00:00
Chris Lattner
9f1794ea58 reduce indentation by using early exits. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31660 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-11 00:56:29 +00:00
Chris Lattner
448f219fed move big chunks of code out-of-line, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31658 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-11 00:39:41 +00:00
Chris Lattner
734c91d250 Fix a dag combiner bug exposed by my recent instcombine patch. This fixes 
CodeGen/Generic/2006-11-10-DAGCombineMiscompile.ll and PPC gsm/toast


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31644 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-10 21:37:15 +00:00
Evan Cheng
438f7bc67c Add implicit def / use operands to MachineInstr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31633 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-10 08:43:01 +00:00
Evan Cheng
a7ff64d608 When forming a pre-indexed store, make sure ptr isn't the same or is a pred of value being stored. It would cause a cycle. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31631 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-10 08:28:11 +00:00
Chris Lattner
1e7aa5c209 commentate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31627 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-10 04:41:34 +00:00
Evan Cheng
8dc5cad8a2 Don't attempt expensive pre-/post- indexed dag combine if target does not support them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31598 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 19:10:46 +00:00
Evan Cheng
5ff839fbab Add a mechanism to specify whether a target supports a particular indexed load / store. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31597 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 18:56:43 +00:00
Evan Cheng
0030582239 Rename ISD::MemOpAddrMode to ISD::MemIndexedMode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31596 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 18:44:21 +00:00
Evan Cheng
144d8f09e1 Rename ISD::MemOpAddrMode to ISD::MemIndexedMode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31595 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 17:55:04 +00:00
Jim Laskey
85f419b36c Allows debugging llc self hosted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31594 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 16:32:26 +00:00
Jim Laskey
5496f01465 Merging dwarf info to a single compile unit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31593 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 14:52:14 +00:00
Evan Cheng
d258efaf6e getPostIndexedAddressParts change: passes in load/store instead of its loaded / stored VT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31584 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 04:29:46 +00:00
Evan Cheng
a1fd6504aa Remove M_2_ADDR_FLAG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31583 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-09 02:22:54 +00:00
Evan Cheng
b00dddd164 Match more post-indexed ops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31569 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 20:27:27 +00:00
Jim Laskey
d6c3422e31 Remove redundant <cmath>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31561 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 19:16:44 +00:00
Jim Laskey
6ea0f6bce8 Now can re-enable debug label folding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31549 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 14:17:45 +00:00
Evan Cheng
03fa6ea402 - When performing pre-/post- indexed load/store transformation, do not worry 
about whether the new base ptr would be live below the load/store. Let two
  address pass split it back to non-indexed ops.
- Minor tweaks / fixes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31544 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 08:30:28 +00:00
Evan Cheng
a4f53ef527 Fixed a minor bug preventing some pre-indexed load / store transformation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31543 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 06:56:05 +00:00
Reid Spencer
3822ff5c71 For PR950: 
This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31542 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 06:47:33 +00:00
Evan Cheng
6c1491dd06 Fix a obscure post-indexed load / store dag combine bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31537 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 02:38:55 +00:00
Chris Lattner
5d056952ba optimize single MBB loops better. In particular, produce: 
LBB1_57:        #bb207.i
        movl 72(%esp), %ecx
        movb (%ecx,%eax), %cl
        movl 80(%esp), %edx
        movb %cl, 1(%edx,%eax)
        incl %eax
        cmpl $143, %eax
        jne LBB1_57     #bb207.i
        jmp LBB1_64     #cond_next255.i

intead of:

LBB1_57:        #bb207.i
        movl 72(%esp), %ecx
        movb (%ecx,%eax), %cl
        movl 80(%esp), %edx
        movb %cl, 1(%edx,%eax)
        incl %eax
        cmpl $143, %eax
        je LBB1_64      #cond_next255.i
        jmp LBB1_57     #bb207.i

This eliminates a branch per iteration of the loop.  This hurted PPC
particularly, because the extra branch meant another dispatch group for each
iteration of the loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31530 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-08 01:03:21 +00:00
Jim Laskey
4d0c1a04bc Accidently reran commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31516 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 21:58:55 +00:00
Jim Laskey
5e213ea697 Missed a label map, reverting till covered. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31514 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 21:37:31 +00:00
Jim Laskey
fffcd69709 Missed a label map, reverting till covered. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31512 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 20:53:05 +00:00
Jim Laskey
9d4209fb82 1. Add a pass to fold debug label instructions so a debug info client can detect 
empty ranges.

2. Reorg how MachineDebugInfo maintains changes to debug labels.

3. Have dwarf writer use debug label info to simplify scopes and source line
coorespondence.

4. Revert the merging of compile units until I can get the bugs ironed out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31507 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 19:33:46 +00:00
Chris Lattner
393ebae0ef Enable improved spilling costs by default. This speeds up viterbi on x86 
by 40%, FreeBench/fourinarow by 20%, and many other programs 10-25%.

On PPC, this speeds up fourinarow by 18%, and probably other things as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31504 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 18:04:58 +00:00
Jim Laskey
7902c75331 Use correct value for float HUGH_VAL. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31500 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 12:25:45 +00:00
Evan Cheng
bbd6f6ec1a Add post-indexed load / store transformations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31498 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 09:03:05 +00:00
Chris Lattner
b75a663707 Add a new llcbeta option. This speeds up viterbi from 12.34 to 8.76s on 
X86.  If happy, I'll enable this by default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31493 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 07:18:40 +00:00
Reid Spencer
5a4951e936 Unbreak X86/ELF Debugging. Somehow this line got lost in Jim's cleanup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31492 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 06:36:36 +00:00
Chris Lattner
fa9aa2b424 Fix PR988 and CodeGen/Generic/2006-11-06-MemIntrinsicExpand.ll. 
The low part goes in the first operand of expandop, not the second one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31487 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-07 04:11:44 +00:00
Evan Cheng
d5ad440f43 Remove dead code; added a missing null ptr check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31478 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 21:33:46 +00:00
Jim Laskey
f910a3ff0f Tab interferes with uniqueness. 
NOTE: There doesn't seem to be consistency for whether a leading tab
is present in a section heading.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31475 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 16:23:59 +00:00
Jim Laskey
84ca10f47b D'oh - reversed logic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31474 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 13:20:29 +00:00
Evan Cheng
3ef554d2b1 Add comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31473 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-06 08:14:30 +00:00
Jeff Cohen
d41b30def3 Unbreak VC++ build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31464 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-05 19:31:28 +00:00
Evan Cheng
33dbedcdcb Added pre-indexed store support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31459 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-05 09:31:14 +00:00
Evan Cheng
9109fb1eb7 Added getIndexedStore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31458 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-05 09:30:09 +00:00
Jim Laskey
5cd496e727 Live local variables are being dropped because the begin or end labels marking 
their scope are being deleted.  Workaround is to widen scope to full function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31454 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 10:48:07 +00:00
Evan Cheng
95f6edeff5 Changes to use operand constraints to process two-address instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31453 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 09:44:31 +00:00
Evan Cheng
e077ef6e85 Fixed some spiller bugs exposed by the recent two-address code changes. Now 
there may be other def(s) apart from the use&def two-address operand. We need
to check if the register reuse for a use&def operand may conflicts with another
def. Provide a mean to recover from the conflict if it is detected when the
defs are processed later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31439 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-04 00:21:55 +00:00
Chris Lattner
033b107e10 this will work better 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31419 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 19:15:55 +00:00
Chris Lattner
0709718665 Fix the build on xcode < 2.4 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31417 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 19:13:59 +00:00
Evan Cheng
e6e97e66a3 Fix comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31414 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 07:31:32 +00:00
Evan Cheng
1a854be352 Rename 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31413 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 07:21:16 +00:00
Reid Spencer
b8f4e0aa17 Remove dead variable. Fix 80 column violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31412 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 03:30:34 +00:00
Evan Cheng
7fc033a24d Added DAG combiner transformation to generate pre-indexed loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31410 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 03:06:21 +00:00
Evan Cheng
c5fc57dcae Added isPredecessor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31409 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 03:05:24 +00:00
Evan Cheng
bf105c8424 Proper check for two-addressness. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31408 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 03:04:46 +00:00
Chris Lattner
02cb49ee67 silence warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31397 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 01:28:29 +00:00
Reid Spencer
97821311a3 Make CodeGen libs -pedantic clean. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31387 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 23:56:21 +00:00
Jim Laskey
f673388351 1. Hash not quite right for DIEValues. 
2. Not going to use Usage (no significant benefit.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31384 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 21:48:18 +00:00
Reid Spencer
9bd6d65e29 Remove unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31382 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 20:55:40 +00:00
Reid Spencer
3ed469ccd7 For PR786: 
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 20:25:50 +00:00
Jim Laskey
ef42a01113 General clean up of teh dwarf writer. 
1. Most significant is the folding of debug information entries.  This
reduced self hosted -g SelectionDAGISel.s from 120M to 13M and pretty
close to matching .o file sizes with gcc.

2. Debug information entry printing for debugging the dwarf code.

3. Bring all the code closer to llvm standards.

4. Misc. fixes and doc clean ups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31379 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 20:12:39 +00:00
Reid Spencer
0a783f783c For PR950: 
Replace the REM instruction with UREM, SREM and FREM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31369 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 01:53:59 +00:00
Chris Lattner
2a821601f1 Allow the getRegForInlineAsmConstraint method to return a register class with 
no fixes physreg.  Treat this as permission to use any register in the register
class.  When this happens and it is safe, allow the llvm register allcoator to
allocate the register instead of doing it at isel time.  This eliminates a ton
of copies around common inline asms.  For example:

int test2(int Y, int X) {
  asm("foo %0, %1" : "=r"(X): "r"(X));
  return X;
}

now compiles to:

_test2:
        foo r3, r4
        blr

instead of:

_test2:
        mr r2, r4
        foo r2, r2
        mr r3, r2
        blr

GCC produces:

_test2:
        foo r4, r4
        mr r3,r4
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31366 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 01:41:49 +00:00
Evan Cheng
e6ae14e1f4 Rename 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31364 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 23:18:32 +00:00
Evan Cheng
360c2dd25a Two-address instructions no longer have to be A := A op C. Now any pair of dest / src operands can be tied together. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31363 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 23:06:55 +00:00
Evan Cheng
1dabb68ab4 Clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31359 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 22:39:30 +00:00
Evan Cheng
93467e7fe3 CopyFromReg starts a live range so its use should not be considered a floater. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31356 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 22:17:06 +00:00
Chris Lattner
d4bf3c2fd6 give branch folding a simple heuristic to decide which block to split so that 
it inserts an uncond branch where it is less likely to cause a problem.  This
fixes some perf issues on ppc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31354 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 19:36:29 +00:00
Evan Cheng
41349c10cb Add a printSetLabel that takes two id's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31347 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 09:23:08 +00:00
Evan Cheng
6cc31ae4da Print jumptable index. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31340 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 04:48:30 +00:00
Chris Lattner
1d08d83230 make tail merging more aggressive. If two blocks share a common tail, but the 
tail is not an entire block for either of them, pick one, split it, then
merge the common part.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31336 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 01:16:12 +00:00
Chris Lattner
d8ccff0c3e enable branch folding with an option 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31335 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-01 00:38:31 +00:00
Chris Lattner
0ccb500fa7 Compile CodeGen/PowerPC/fp-branch.ll to: 
_intcoord_cond_next55:
LBB1_3: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        blt cr0, LBB1_2 ;cond_next62.exitStub
LBB1_1: ;bb72.exitStub
        li r3, 1
        blr
LBB1_2: ;cond_next62.exitStub
        li r3, 0
        blr

instead of:

_intcoord_cond_next55:
LBB1_3: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        bge cr0, LBB1_1 ;bb72.exitStub
LBB1_4: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        bnu cr0, LBB1_2 ;cond_next62.exitStub
LBB1_1: ;bb72.exitStub
        li r3, 1
        blr
LBB1_2: ;cond_next62.exitStub
        li r3, 0
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31330 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 23:06:00 +00:00
Chris Lattner
df19f27d03 look through isunordered to inline it into branch blocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31328 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 22:37:42 +00:00
Chris Lattner
efa46ce87b handle global address constant sdnodes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31323 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 20:01:56 +00:00
Chris Lattner
53069fbbae TargetLowering::isOperandValidForConstraint 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31319 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 19:41:18 +00:00
Chris Lattner
dba1aeedd8 Change the prototype for TargetLowering::isOperandValidForConstraint 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31318 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 19:40:43 +00:00
Anton Korobeynikov
ab4022f196 1. Clean up code due to changes in SwitchTo*Section(2) 
2. Added partial debug support for mingw\cygwin targets (the same as
   Linux\ELF). Please note, that currently mingw\cygwin uses 'stabs' format
   for storing debug info by default, thus many (runtime) libraries has
   this information included. These formats shouldn't be mixed in one binary
   ('stabs' & 'DWARF'), otherwise binutils tools will be confused.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31311 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 08:31:24 +00:00
Chris Lattner
d03f1581c8 Turn an assert into an error message. This is commonly triggered when 
we don't support a specific constraint yet.  When this happens, print the
unsupported constraint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31310 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 07:33:13 +00:00
Evan Cheng
d063189c09 Fix a typo which can break jumptables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31305 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-31 02:31:00 +00:00
Reid Spencer
0de0c5da42 Fix a problem introduced by a last-minute change (logic negation). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31302 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 23:34:32 +00:00
Reid Spencer
02b8511364 Add debug support for X86/ELF targets (Linux). This allows llvm-gcc4 
generated object modules to be debugged with gdb. Hopefully this helps
pre-release debugging.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31299 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 22:32:30 +00:00
Jim Laskey
a9c83fe5e1 Switch abbreviations to use the folding set.a. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31296 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 15:59:54 +00:00
Jim Laskey
6519546eda Simplify DwarfWriter header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31295 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 13:35:07 +00:00
Evan Cheng
3d4ce11085 Lower jumptable to BR_JT. The legalizer can lower it to a BRIND or let the target custom lower it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31293 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 08:00:44 +00:00
Evan Cheng
c41cd9c391 Added a new SDNode type: BR_JT for jumptable branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31292 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-30 07:59:36 +00:00
Chris Lattner
6b0e3f8907 Make CanFallThrough more intelligent (so it can handle blocks with (e.g.) no 
successors), and make island block movement more general.

This compiles CodeGen/X86/2006-04-27-ISelFoldingBug.ll to:

_loadAndRLEsource_no_exit_2E_1_label_2E_0:
        subl $8, %esp
        movl %esi, 4(%esp)
        movl %ebx, (%esp)
        movl 16(%esp), %eax
        movl 12(%esp), %ecx
LBB1_3: #label.0
        movl _last, %edx
        movl %edx, %esi
        incl %esi
        movl %esi, _last
        movl %ecx, %ebx
        # TRUNCATE movb %bl, %bl
        movl _block, %esi
        movb %bl, 1(%esi,%edx)
        cmpl %eax, _last
        jge LBB1_2      #codeRepl5.exitStub
LBB1_4: #label.0
        cmpl $257, %ecx
        je LBB1_2       #codeRepl5.exitStub
LBB1_1: #label.0.no_exit.1_crit_edge.exitStub
        movl $1, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_2: #codeRepl5.exitStub
        xorl %eax, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret

instead of:

_loadAndRLEsource_no_exit_2E_1_label_2E_0:
        subl $8, %esp
        movl %esi, 4(%esp)
        movl %ebx, (%esp)
        movl 16(%esp), %eax
        movl 12(%esp), %ecx
        jmp LBB1_3      #label.0
LBB1_1: #label.0.no_exit.1_crit_edge.exitStub
        movl $1, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_2: #codeRepl5.exitStub
        xorl %eax, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_3: #label.0
        movl _last, %edx
        movl %edx, %esi
        incl %esi
        movl %esi, _last
        movl %ecx, %ebx
        # TRUNCATE movb %bl, %bl
        movl _block, %esi
        movb %bl, 1(%esi,%edx)
        cmpl %eax, _last
        jge LBB1_2      #codeRepl5.exitStub
LBB1_4: #label.0
        cmpl $257, %ecx
        jne LBB1_1      #label.0.no_exit.1_crit_edge.exitStub
        jmp LBB1_2      #codeRepl5.exitStub

... which is much better layout :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31282 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 21:05:41 +00:00
Chris Lattner
6a586c8d9a fix Generic/2006-10-29-Crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31281 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 21:01:20 +00:00
Chris Lattner
5a145f0094 Fix a load folding issue that Evan noticed: there is no need to export values 
used by comparisons in the main block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31279 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 18:23:37 +00:00
Evan Cheng
ba726ab3ec VLOAD is not the LoadSDNode opcode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31276 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 06:14:47 +00:00
Nick Lewycky
f6aaaaa39e Remove spurious case. EXTLOAD is not one of the node opcodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31275 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-29 02:26:30 +00:00
Chris Lattner
bad7f48c70 split critical edges more carefully and intelligently. In particular, critical 
edges whose destinations are not phi nodes don't bother us.  Also, share
split edges, since the split edge can't have a phi.  This significantly
reduces the complexity of generated code in some cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31274 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 19:22:10 +00:00
Chris Lattner
6acfe12dd6 Teach branch folding to fold identical jump tables together and to delete 
jump tables that are dead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31273 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:34:47 +00:00
Chris Lattner
a4eb44a285 const'ify jump table stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31269 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:17:09 +00:00
Chris Lattner
e7251a0377 add an assert 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31267 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:11:20 +00:00
Chris Lattner
0737188220 don't print dead jump tables 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31266 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 18:10:06 +00:00
Chris Lattner
cf420cca57 improve deletion of blocks that just contain branches by knowing that 
the pred block doesn't fall through into them if it's a jumptable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31263 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:32:47 +00:00
Jim Laskey
1c6f01aaa5 Load and stores have not been uniqued properly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31261 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:25:28 +00:00
Chris Lattner
47e32e6b83 Split *all* critical edges before isel. This resolves issues with spill code 
being inserted on unsplit critical edges, which introduces (sometimes large
amounts of) partially dead spill code.

This also fixes PR925 + CodeGen/Generic/switch-crit-edge-constant.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31260 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 17:04:37 +00:00
Chris Lattner
6fb6ef4d65 Fix a serious bug that caused any x86 vector stuff to infinite loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31254 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-28 06:15:26 +00:00
Jim Laskey
def69b92e7 Clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31243 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-27 23:52:51 +00:00
Chris Lattner
8c494ab759 Fix a bug in merged condition handling (CodeGen/Generic/2006-10-27-CondFolding.ll). 
Add many fewer CFG edges and PHI node entries.  If there is a switch which has
the same block as multiple destinations, only add that block once as a successor/phi
node (in the jumptable case)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31242 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-27 23:50:33 +00:00
Jim Laskey
583bd47f77 Switch over from SelectionNodeCSEMap to FoldingSet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31240 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-27 23:46:08 +00:00
Chris Lattner
1c9b2f312d remove debug code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31233 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-27 21:58:03 +00:00
Chris Lattner
d2f9ee9ea7 Codegen cond&cond with two branches. This compiles (f.e.) PowerPC/and-branch.ll to: 
cmpwi cr0, r4, 4
        bgt cr0, LBB1_2 ;UnifiedReturnBlock
LBB1_3: ;entry
        cmplwi cr0, r3, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock

instead of:

        cmpwi cr7, r4, 4
        mfcr r2
        addic r4, r3, -1
        subfe r3, r4, r3
        rlwinm r2, r2, 30, 31, 31
        or r2, r2, r3
        cmplwi cr0, r2, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock
LBB1_1: ;cond_true


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31232 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-27 21:54:23 +00:00
Chris Lattner
571e434a34 Turn conditions like x<Y|z==q into multiple blocks. 
This compiles Regression/CodeGen/X86/or-branch.ll into:

_foo:
        subl $12, %esp
        call L_bar$stub
        movl 20(%esp), %eax
        movl 16(%esp), %ecx
        cmpl $5, %eax
        jl LBB1_1       #cond_true
LBB1_3: #entry
        testl %ecx, %ecx
        jne LBB1_2      #UnifiedReturnBlock
LBB1_1: #cond_true
        call L_bar$stub
        addl $12, %esp
        ret
LBB1_2: #UnifiedReturnBlock
        addl $12, %esp
        ret

instead of:

_foo:
        subl $12, %esp
        call L_bar$stub
        movl 20(%esp), %eax
        movl 16(%esp), %ecx
        cmpl $4, %eax
        setg %al
        testl %ecx, %ecx
        setne %cl
        testb %cl, %al
        jne LBB1_2      #UnifiedReturnBlock
LBB1_1: #cond_true
        call L_bar$stub
        addl $12, %esp
        ret
LBB1_2: #UnifiedReturnBlock
        addl $12, %esp
        ret

And on ppc to:

        cmpwi cr0, r29, 5
        blt cr0, LBB1_1 ;cond_true
LBB1_3: ;entry
        cmplwi cr0, r30, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock

instead of:

        cmpwi cr7, r4, 4
        mfcr r2
        addic r4, r3, -1
        subfe r30, r4, r3
        rlwinm r29, r2, 30, 31, 31
        and r2, r29, r30
        cmplwi cr0, r2, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31230 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-27 21:36:01 +00:00
Evan Cheng
5270cf1b77 getPreIndexedLoad -> getIndexedLoad. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31209 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-26 21:53:40 +00:00
Reid Spencer
1628cec4d7 For PR950: 
Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31195 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-26 06:15:43 +00:00
Chris Lattner
c2e91e34dc simplify code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31188 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-25 22:21:37 +00:00
Chris Lattner
323ece6fcd turn off tail merging for now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31180 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-25 18:08:50 +00:00
Chris Lattner
13a04125df be more aggressive about matching identical instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31179 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-25 18:08:14 +00:00
Devang Patel
f9c197e022 Move getPreferredAlignmentLog from AsmPrinter to TargetData 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31171 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 20:32:14 +00:00
Chris Lattner
2452595927 visitSwitchCase knows how to insert conditional branches well. Change 
visitBr to just call visitSwitchCase, eliminating duplicate logic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31167 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 18:07:37 +00:00
Chris Lattner
57ab65972e Generalize CaseBlock a bit more: 
Rename LHSBB/RHSBB to TrueBB/FalseBB.  Allow the RHS value to be null,
in which case the LHS is treated as a bool.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31166 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 17:57:59 +00:00
Chris Lattner
7b248d9866 generalize 'CaseBlock'. It really allows any comparison to be inserted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31161 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 17:03:35 +00:00
Jim Laskey
62d07d6ace Don't do dead block elimination in fast mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31155 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 16:11:49 +00:00
Jim Laskey
e719d9f8f2 LinearScanner hotspot. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31153 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 14:35:25 +00:00
Jim Laskey
fcc1d9473e Tighter data structure for deleted debug labels. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31152 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 11:50:43 +00:00
Chris Lattner
7d09784d3f move single basic blocks that are neither fallen into nor fall out of into 
a place more useful.  In particular, if we can put them in a place where code
will be able to fall into it, do so.  Otherwise, put it in a place it can fall
through into a successor.  Otherwise, if preventing a fallthrough, move to the
end of the function, out of the way.

This deletes several hundred unconditional branches from spass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31149 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 01:12:32 +00:00
Chris Lattner
c585a3f62a add moveBefore/moveAfter helper methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31145 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-24 00:02:26 +00:00
Chris Lattner
a4bcfe12d1 Enable tail merging by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31140 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-23 22:10:12 +00:00
Chris Lattner
b354343af7 Minor tweak. Instead of generating: 
movl 32(%esp), %eax
        cmpl $1, %eax
        je LBB1_1       #bb
LBB1_4: #entry
        cmpl $2, %eax
        je LBB1_2       #bb2
        jmp LBB1_3      #UnifiedReturnBlock
LBB1_1: #bb

notice that we would miss the fall through and emit this instead:

        movl 32(%esp), %eax
        cmpl $2, %eax
        je LBB1_2       #bb2
LBB1_4: #entry
        cmpl $1, %eax
        jne LBB1_3      #UnifiedReturnBlock
LBB1_1: #bb


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31130 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-23 18:38:22 +00:00
Jim Laskey
66ebf0973d More complete solution to deleting blocks and debug info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31129 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-23 14:56:37 +00:00
Chris Lattner
b2e806eecd Fix phi node updating for switches lowered to linear sequences of branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31125 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-22 23:00:53 +00:00
Chris Lattner
e236ac64a2 disable this code for now, it's not yet safely updating phi nodes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31124 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-22 22:47:10 +00:00
Chris Lattner
d2c1d2200b Implement PR964 and Regression/CodeGen/Generic/SwitchLowering.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31119 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-22 21:36:53 +00:00
Chris Lattner
4bc135e93b don't break infinite loops 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31102 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-21 06:11:43 +00:00
Chris Lattner
a2d799531a Use branch reversal to do stuff like this: 
call L_strcmp$stub
        testl %eax, %eax
-       jne LBB26_208   #cond_true6020
-       jmp LBB26_227   #bb7119
+       je LBB26_227    #bb7119
 LBB26_208:     #cond_true6020
        movl $l31_str14, 4(%esp)

        testl %eax, %eax
-       jne LBB26_704   #cond_true13042
-       jmp LBB26_713   #bb13151
+       je LBB26_713    #bb13151
 LBB26_704:     #cond_true13042
        movl $_str52, 4(%esp)

        cmpl 76(%ecx), %eax
-       jge LBB26_1628  #cond_false63.i.i
-       jmp LBB26_1769  #_Z8makeGridP13mrSurfaceListidiidd.exit.i
+       jl LBB26_1769   #_Z8makeGridP13mrSurfaceListidiidd.exit.i
 LBB26_1628:    #cond_false63.i.i
        movl $0, 48964(%esp)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31100 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-21 05:54:00 +00:00
Chris Lattner
2d47bd937c Transform code like: 
jle FOO
  jmp BAR
BAR:

into:

  jle FOO
BAR:

... whoa!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31098 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-21 05:43:30 +00:00
Chris Lattner
386e29065d Three changes: 
1. Remove a bunch of ifdef'd code.
2. When a block just contains an uncond branch, change all blocks branching
   to it to jump to the destination instead.
3. If branch analysis tells us some edges in the machinecfg are not actually
   possible, remove them.

#2 triggers a suprisingly large number of times.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31094 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-21 05:08:28 +00:00
Chris Lattner
12143054aa Add an experimental cross-jumping implementation. 
This is currently disabled by default and limited in several ways, but does
have a positive effect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31090 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-21 00:47:49 +00:00
Chris Lattner
8ace2cd034 implement MachineOperand::isIdenticalTo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31088 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-20 22:39:59 +00:00
Chris Lattner
34ab4d45d2 Make flag and chain edges visually distinguishable from value edges in DOT 
output.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31067 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-20 18:06:09 +00:00
Reid Spencer
b83eb6447b For PR950: 
This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31063 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-20 07:07:24 +00:00
Bill Wendling
c70ddad2b7 Partially in response to PR926: insert the newly created machine basic 
blocks into the basic block list when lowering the switch inst. into a
binary tree of if-then statements. This allows the "visitSwitchCase" func
to allow for fall-through behavior.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31057 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-19 21:46:38 +00:00
Jim Laskey
07a2709e9d Add option for controlling inclusion of global AA. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31040 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-18 19:08:31 +00:00
Jim Laskey
096c22ea3d Use global info for alias analysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31035 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-18 12:29:57 +00:00
Chris Lattner
683747abb8 Teach the branch folder to update debug info if it removes blocks with line 
# notes in it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31026 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 23:17:27 +00:00
Chris Lattner
a97906b6e6 add a method to remove a line # record. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31025 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 23:16:42 +00:00
Chris Lattner
8466b21432 Do not leak all of the SourceLineInfo objects. Do not bother mallocing each 
one separately.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31022 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 22:06:46 +00:00
Chris Lattner
b360729873 Trivial patch to speed up legalizing common i64 constants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31020 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 21:47:13 +00:00
Chris Lattner
50662beab7 Fix CodeGen/PowerPC/2006-10-17-brcc-miscompile.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31019 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 21:24:15 +00:00
Evan Cheng
649b7ef627 Fix printer for StoreSDNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31017 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 21:18:26 +00:00
Evan Cheng
2cacccae19 Reflect MemOpAddrMode change; added a helper to create pre-indexed load. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31016 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 21:14:32 +00:00
Jim Laskey
26f7fa7bba Make it simplier to dump DAGs while in DAGCombiner. Remove a nasty optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31009 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 19:33:52 +00:00
Chris Lattner
ffddf6ba1c Enable deleting branches to successor blocks. With the previous patches, 
branch folding can now compile stuff like this:

void foo(int W, int X, int Y, int Z) {
  if (W & 1) {
    for (; X;--X) bar();
  } else if (W & 2) {
    for (; Y;--Y) bar();
  } else if (W & 4) {
    for (; Z;--Z) bar();
  } else if (W & 8) {
    for (; W;--W) bar();
  }

  if (W) {
    bar();
  }
}

contrived testcase where loops exits all end up merging together.  To have
the loop merges be:

...
        cmplw cr0, r30, r27
        bne cr0, LBB1_14        ;bb38
LBB1_16:        ;cond_next48.loopexit
        mr r27, r29
LBB1_20:        ;cond_next48
        cmplwi cr0, r27, 0
        beq cr0, LBB1_22        ;UnifiedReturnBlock
...

instead of:


...
        cmplw cr0, r30, r27
        bne cr0, LBB1_14        ;bb38
LBB1_16:        ;cond_next48.loopexit
        mr r27, r29
        b LBB1_20       ;cond_next48
LBB1_17:        ;cond_next48.loopexit1
        b LBB1_20       ;cond_next48
LBB1_18:        ;cond_next48.loopexit2
        b LBB1_20       ;cond_next48
LBB1_19:        ;cond_next48.loopexit3
LBB1_20:        ;cond_next48
        cmplwi cr0, r27, 0
        beq cr0, LBB1_22        ;UnifiedReturnBlock
...


This is CodeGen/PowerPC/branch-opt.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31006 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 18:16:40 +00:00
Jim Laskey
99e41eed6d Clean up interface to getGlobalLinkName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31001 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 17:17:24 +00:00
Chris Lattner
c50ffcb7fc Reenable this pass, fixing the bugs in it. 
It now correctly deletes unreachable blocks and blocks that are empty.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31000 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 17:13:52 +00:00
Evan Cheng
5d04a1af4f Make sure operand does have size and element type operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30999 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 17:06:35 +00:00
Jim Laskey
a1a19f803c Basic support for getGlobalLinkName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30997 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-17 13:41:07 +00:00
Evan Cheng
5956922a2d Be careful when looking through a vbit_convert. Optimizing this: 
(vector_shuffle
  (vbitconvert (vbuildvector (copyfromreg v4f32), 1, v4f32), 4, f32),
  (undef, undef, undef, undef), (0, 0, 0, 0), 4, f32)
to the
  vbitconvert
is a very bad idea.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30989 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-16 22:49:37 +00:00
Jim Laskey
c7c3f110ed Pass AliasAnalysis thru to DAGCombiner. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30984 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-16 20:52:31 +00:00
Jim Laskey
ba8a2ee548 Global name regression. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30982 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-10-16 19:38:41 +00:00