Chris Lattner
3a007653c4
Add a requirement, patch contributed by Henrik Bach.
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llvm-svn: 23242
2005-09-06 04:07:15 +00:00
Andrew Lenharth
00a229859e
revert part of the last change, should fix regressions
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llvm-svn: 23241
2005-09-04 06:12:19 +00:00
Chris Lattner
e9b488e262
explicitly specify an operands list for patterns with inputs (e.g. neg)
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llvm-svn: 23240
2005-09-03 01:28:40 +00:00
Chris Lattner
dcb9830e25
include the dag isel fragment
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llvm-svn: 23239
2005-09-03 01:17:22 +00:00
Chris Lattner
4186020e3b
ask for a dag isel
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llvm-svn: 23238
2005-09-03 01:15:41 +00:00
Chris Lattner
9efe5b36c2
allow for a target to ask for a dag isel
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llvm-svn: 23237
2005-09-03 01:15:25 +00:00
Chris Lattner
12c57505bf
Add an option and stuff implementation of a dag isel emitter
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llvm-svn: 23236
2005-09-03 01:14:03 +00:00
Chris Lattner
29929a3745
Fix a checking failure in gs
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llvm-svn: 23235
2005-09-03 01:04:40 +00:00
Chris Lattner
cbfe5d4180
Change the isel to not break out of the big giant switch. Instead, the
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switch should never be exited, so its bottom is now unreachable.
llvm-svn: 23234
2005-09-03 00:53:47 +00:00
Chris Lattner
47c5e11f36
rearrange logical ops to group them together more consistently.
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Define the PatFrag class which can be used to define subpatterns to match
things with. Define 'not', and use it to define the patterns for andc,
nand, etc.
llvm-svn: 23233
2005-09-03 00:21:51 +00:00
Chris Lattner
a1a3e767e3
Add AND/OR/XOR
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llvm-svn: 23232
2005-09-02 22:35:53 +00:00
Nate Begeman
613f777bbc
Next round of DAG Combiner changes. Just need to support multiple return
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values, and then we should be able to hook it up.
llvm-svn: 23231
2005-09-02 21:18:40 +00:00
Chris Lattner
0b07b6f9a1
Add some initial patterns to simple binary instructions, though they
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currently don't do anything. This elides patterns for binary operators
that ping on the carry flag, since we don't model it yet.
This patch also removes PPC::SUB, because it is dead.
llvm-svn: 23230
2005-09-02 21:18:00 +00:00
Chris Lattner
da97aa059c
Clean up some code from the last checkin
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llvm-svn: 23229
2005-09-02 20:32:45 +00:00
Chris Lattner
4c2b614aa6
Fix a bug in legalize where it would emit two calls to libcalls that return
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i64 values on targets that need that expanded to 32-bit registers. This fixes
PowerPC/2005-09-02-LegalizeDuplicatesCalls.ll and speeds up 189.lucas from
taking 122.72s to 81.96s on my desktop.
llvm-svn: 23228
2005-09-02 20:26:58 +00:00
Chris Lattner
204e15f491
Test that converting from double to int64 results in one libcall, not one
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and a dead one. This is a legalize bug
llvm-svn: 23227
2005-09-02 20:24:10 +00:00
Chris Lattner
e1a69ba1bd
turn on dag isel by default
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llvm-svn: 23226
2005-09-02 19:53:54 +00:00
Chris Lattner
17b67e5137
Make sure to auto-cse nullary ops
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llvm-svn: 23224
2005-09-02 19:36:17 +00:00
Chris Lattner
7862cff120
add a map for nullary ops
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llvm-svn: 23223
2005-09-02 19:35:42 +00:00
Jim Laskey
1f9c40400c
Add help support for -mcpu and -mattr.
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llvm-svn: 23222
2005-09-02 19:27:43 +00:00
Chris Lattner
7995b70148
Fix some buggy logic where we would try to remove nodes with two operands
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from the binary ops map, even if they had multiple results. This latent bug
caused a few failures with the dag isel last night.
To prevent stuff like this from happening in the future, add some really
strict checking to make sure that the CSE maps always match up with reality!
llvm-svn: 23221
2005-09-02 19:15:44 +00:00
Andrew Lenharth
94da25ae50
Pull out Lowering in preperation for multiple ISels. Oh, and get rid of some stuff
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llvm-svn: 23220
2005-09-02 18:46:02 +00:00
Chris Lattner
365774f457
Don't create zero sized stack objects even for array allocas with a zero
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number of elements.
llvm-svn: 23219
2005-09-02 18:41:28 +00:00
Chris Lattner
813a73e8e9
Decouple fsqrt from gpul optimizations, implementing fsqrt.ll.
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Remove the -enable-gpopt option which is subsumed by feature flags.
llvm-svn: 23218
2005-09-02 18:33:05 +00:00
Chris Lattner
ed22d99214
new testcase to ensure fsqrt is generated for correct subtargets only, and
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that the fsqrt feature works.
llvm-svn: 23217
2005-09-02 18:32:22 +00:00
Chris Lattner
49eef12127
Move a bunch of non-deprecated methods above the "deprecated line"
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llvm-svn: 23216
2005-09-02 18:16:20 +00:00
Chris Lattner
7d89863a77
Fix the release build, noticed by Eric van Riet Paap
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llvm-svn: 23215
2005-09-02 07:09:28 +00:00
Chris Lattner
371f542759
Fix a problem that Dan Berlin noticed, where reassociation would not succeed
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in building maximal expressions before simplifying them. In particular, i
cases like this:
X-(A+B+X)
the code would consider A+B+X to be a maximal expression (not understanding
that the single use '-' would be turned into a + later), simplify it (a noop)
then later get simplified again.
Each of these simplify steps is where the cost of reassociation comes from,
so this patch should speed up the already fast pass a bit.
Thanks to Dan for noticing this!
llvm-svn: 23214
2005-09-02 07:07:58 +00:00
Chris Lattner
4cade5915d
Avoid creating garbage instructions, just move the old add instruction
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to where we need it when converting -(A+B+C) -> -A + -B + -C.
llvm-svn: 23213
2005-09-02 06:38:04 +00:00
Chris Lattner
019ab1a9ab
new testcase for recent bugfix
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llvm-svn: 23212
2005-09-02 06:12:12 +00:00
Chris Lattner
dfba6f5029
add some assertions and fix problems where reassociate could access the
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Ops vector out of range
llvm-svn: 23211
2005-09-02 05:23:22 +00:00
Jeff Cohen
930e81f03b
Fix VC++ build errors
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llvm-svn: 23210
2005-09-02 02:51:42 +00:00
Chris Lattner
6f9e01aa94
Restore this patch now that the latent bug has been fixed
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llvm-svn: 23209
2005-09-02 01:24:55 +00:00
Chris Lattner
86bed2f90b
Make sure to legalize assert[zs]ext's operand correctly
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llvm-svn: 23208
2005-09-02 01:15:01 +00:00
Chris Lattner
a58ee78b78
Revert the previous patch which causes a mysterious regression in toast.
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llvm-svn: 23207
2005-09-02 00:47:05 +00:00
Chris Lattner
4919477f39
Teach live intervals to not crash on dead livein regs
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llvm-svn: 23206
2005-09-02 00:20:32 +00:00
Chris Lattner
8a6c15f4f4
For values that are live across basic blocks and need promotion, use ANY_EXTEND
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instead of ZERO_EXTEND to eliminate extraneous extensions. This eliminates
dead zero extensions on formal arguments and other cases on PPC, implementing
the newly tightened up test/Regression/CodeGen/PowerPC/small-arguments.ll test.
llvm-svn: 23205
2005-09-02 00:19:37 +00:00
Chris Lattner
aae61e684c
legalize ANY_EXTEND appropriately
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llvm-svn: 23204
2005-09-02 00:18:10 +00:00
Chris Lattner
3f7fbe14a8
Add support for ANY_EXTEND and add a few minor folds for it
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llvm-svn: 23203
2005-09-02 00:17:32 +00:00
Chris Lattner
70e3e44ec4
Handle any_extend like zext
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llvm-svn: 23202
2005-09-02 00:16:09 +00:00
Chris Lattner
eb4736b128
Handle ANY_EXTEND like ZERO_EXTEND. Simplify the extend/truncate code on
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the observation that it only has to handle i1 -> i64 and i64 -> i1.
llvm-svn: 23201
2005-09-02 00:15:30 +00:00
Chris Lattner
a0ac88861d
Add a new ANY_EXTEND node, which operates like an extension but has undefined
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top bits.
llvm-svn: 23200
2005-09-02 00:14:40 +00:00
Chris Lattner
0af4af9c55
This should permit NOT and's, not even dead ones.
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llvm-svn: 23199
2005-09-02 00:13:56 +00:00
Chris Lattner
983190ce4c
Implement small-arguments.ll:test3 by teaching the DAG optimizer that
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the results of calls to functions returning small values are properly
sign/zero extended.
llvm-svn: 23198
2005-09-01 23:44:32 +00:00
Chris Lattner
3772098053
Another case that shouldn't have sign extends: functions returning short
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are known to return properly sign extended values, no need for an explicit
extension.
llvm-svn: 23197
2005-09-01 23:43:58 +00:00
Nate Begeman
626c46f8d9
Fix some code in the current node combining code, spotted when it was moved
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over to DAGCombiner.cpp
1. Don't assume that SetCC returns i1 when folding (xor (setcc) constant)
2. Don't duplicate code in folding AND with AssertZext that is handled by
MaskedValueIsZero
llvm-svn: 23196
2005-09-01 23:25:49 +00:00
Nate Begeman
18f456b8e3
Implement first round of feedback from chris (there's still a couple things
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left to do).
llvm-svn: 23195
2005-09-01 23:24:04 +00:00
Chris Lattner
c3981dc548
Align functions to 16-byte boundaries, to eliminate noise in performance measurements. This improves the performance of 'treeadd' by about 20% with the dag
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isel, restoring it to the pattern-isel level (which happens to get the alignment right).
llvm-svn: 23194
2005-09-01 23:08:50 +00:00
Chris Lattner
e24ce3bb28
Local labels on darwin apparently start with just 'L', not .L like other
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platforms. This reduces executable size and makes shark realize the actual
bounds of functions instead of showing each MBB as a function :)
llvm-svn: 23193
2005-09-01 21:48:35 +00:00
Jim Laskey
f32ef9a37f
1. Use SubtargetFeatures in llc/lli.
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2. Propagate feature "string" to all targets.
3. Implement use of SubtargetFeatures in PowerPCTargetSubtarget.
llvm-svn: 23192
2005-09-01 21:38:21 +00:00