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