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e6e97e66a366cc7d2d103ac58db56e4bfd700b10
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3075 Commits

Author SHA1 Message Date
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