Chris Lattner
eb516e7f0a
Fix a problem that nate reduced for me.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21923 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13 05:17:00 +00:00
Chris Lattner
9530ddcc60
rename variables and functions to match renamed DAG nodes. Bonus feature:
...
I can actually remember which one is which now!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21922 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13 05:09:11 +00:00
Chris Lattner
66de05b606
do not call expandop on the same value more than once. This fixes
...
X86/2004-02-22-Casts.llx
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21919 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13 04:45:13 +00:00
Chris Lattner
a364fa126a
fix a bad typeo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21917 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 23:51:40 +00:00
Chris Lattner
128b52d3d7
update comment
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21916 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 23:24:44 +00:00
Chris Lattner
16cd04d26c
rename the ADJCALLSTACKDOWN/ADJCALLSTACKUP nodes to be CALLSEQ_START/BEGIN.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21915 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 23:24:06 +00:00
Chris Lattner
9092fa310c
Pass calling convention to use into lower call to
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21900 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 19:56:57 +00:00
Chris Lattner
3becf2026b
fix expansion of ct[lt]z nodes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21896 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 19:27:51 +00:00
Chris Lattner
39a8f33630
Expand 64-bit ctlz/cttz nodes for 32-bit targets
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21895 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 19:05:01 +00:00
Chris Lattner
383203b003
Fix uint->fp casts on PPC, allowing UnitTests/2005-05-12-Int64ToFP to
...
work on it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21894 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 18:52:34 +00:00
Chris Lattner
45982dad53
Allow something to be legalized multiple times. This can be used to reduce
...
legalization iteration
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21892 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 16:53:42 +00:00
Chris Lattner
13689e2009
Oops, don't do this after we figure out where to insert the call chains.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21890 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 07:00:44 +00:00
Chris Lattner
44d105b7fa
Make sure to expand all nodes, avoiding unintentional node duplication.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21889 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 06:54:21 +00:00
Chris Lattner
6980d8295f
handle a common case generated by the uint64 -> FP code path better
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21888 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 06:27:02 +00:00
Chris Lattner
e131e5b81e
add fixme
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21887 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 06:04:14 +00:00
Chris Lattner
b9fa3bc8f3
Fix a problem where early legalization can cause token chain problems.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21885 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 04:49:08 +00:00
Chris Lattner
88de6e77bf
Make legalize a bit more efficient, and canonicalize sub X, C -> add X, -C
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21882 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 00:17:04 +00:00
Nate Begeman
d7c4a4a6c0
Necessary changes to codegen cttz efficiently on PowerPC
...
1. Teach LegalizeDAG how to better legalize CTTZ if the target doesn't have
CTPOP, but does have CTLZ
2. Teach PPC32 how to do sub x, const -> add x, -const for valid consts
3. Teach PPC32 how to do and (xor a, -1) b -> andc b, a
4. Teach PPC32 that ISD::CTLZ -> PPC::CNTLZW
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21880 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 23:43:56 +00:00
Chris Lattner
98cf45bbf6
Fix lowering of ctlz, so now UnitTests/2005-05-11-Popcount-ffs-fls passes
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with the CBE
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21875 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 20:24:12 +00:00
Chris Lattner
a801172e50
Fix lowering of cttz to work with signed values
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21874 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 20:02:14 +00:00
Chris Lattner
86f3e0c24e
fix and concisify intinsic lowering for ctpop. Unfortunately, this code
...
looks completely untested. :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21873 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 19:42:05 +00:00
Chris Lattner
0d67f0c80f
Fix the last remaining bug preventing us from switching the X86 BE over
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from the simple isel to the pattern isel. This forces inserted libcalls
to serialize against other function calls, which was breaking
UnitTests/2005-05-12-Int64ToFP. Hopefully this will fix issues on other
targets as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21872 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 19:02:11 +00:00
Chris Lattner
27e9b41464
Do not memoize ADJCALLSTACKDOWN nodes, provide a method to hack on them.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21871 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 18:57:39 +00:00
Chris Lattner
16ce0df927
wrap long line
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21870 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 18:57:06 +00:00
Chris Lattner
5c33c9a166
Make sure to legalize generated ctpop nodes, convert tabs to spaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21868 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 18:35:21 +00:00
Duraid Madina
57ff7e5f64
expand count-leading/trailing-zeros; the test 2005-05-11-Popcount-ffs-fls.c
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should now pass (the "LLVM" and "REF" results should be identical)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21866 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 08:45:08 +00:00
Chris Lattner
18aa680a96
Add some notes for expanding clz/ctz
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21862 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 05:27:09 +00:00
Chris Lattner
e3ef0a8b9f
Simplify this code, use the proper shift amount
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21861 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 05:21:31 +00:00
Chris Lattner
9b583b4910
Legalize this correctly
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21859 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 05:09:47 +00:00
Chris Lattner
edb1add9a0
implement expansion of ctpop nodes, implementing CodeGen/Generic/llvm-ct-intrinsics.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21856 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 04:51:16 +00:00
Chris Lattner
276260b16d
Print bit count nodes correctly
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21855 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11 04:50:30 +00:00
Jeff Cohen
19bb2283e6
Silence some VC++ warnings
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21838 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-10 02:22:38 +00:00
Chris Lattner
ef311aa7cf
The semantics of cast X to bool are a comparison against zero, not a truncation!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21833 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 22:17:13 +00:00
Chris Lattner
6d5b8e1646
legalize readio/writeio into a load/store if requested
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21827 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 20:36:57 +00:00
Chris Lattner
52d08bd9d8
legalize READPORT, WRITEPORT, READIO, WRITEIO, at least in the basic cases
...
where they are directly supported by the architecture. Wrap a bunch of
long lines :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21826 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 20:23:03 +00:00
Chris Lattner
d0f6c1f52d
Add support for matching the READPORT, WRITEPORT, READIO, WRITEIO intrinsics
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21825 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 20:22:36 +00:00
Chris Lattner
3c6910153c
Add support for READPORT, WRITEPORT, READIO, WRITEIO
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21824 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 20:22:17 +00:00
Chris Lattner
57aa5961a9
Fold shifts into subsequent SHL's. These shifts often arise due to addrses
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arithmetic lowering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21818 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 17:06:45 +00:00
Chris Lattner
fd414a27fd
Don't use the load/store instruction as the source pointer, use the pointer
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being stored/loaded through!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21806 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 04:28:51 +00:00
Chris Lattner
0437cdd6dc
memoize all nodes, even null Value* nodes. Do not add two token chain outputs
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21805 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 04:14:13 +00:00
Chris Lattner
369e6db9b6
wrap long lines
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21804 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 04:08:33 +00:00
Chris Lattner
2bf3c26b2b
Print SrcValue nodes correctly
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21803 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 04:08:27 +00:00
Chris Lattner
1f243e9f43
Wrap long lines. Fix "warning: conflicting types for built-in function 'memset'"
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warning from the CBE+GCC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21779 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-08 19:46:29 +00:00
Misha Brukman
d7a10c8566
* Order #includes alphabetically
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* Remove commented-out debug printouts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21707 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-05 23:45:17 +00:00
Chris Lattner
7ea0ade1b6
When hitting an unsupported intrinsic, actually print it
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Lower debug info to noops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21698 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-05 17:55:17 +00:00
Andrew Lenharth
ded10bfb46
ctpop lowering in legalize
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21697 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-05 15:55:21 +00:00
Andrew Lenharth
fecf095292
Make promoteOp work for CT*
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Proof?
ubyte %bar(ubyte %x) {
entry:
%tmp.1 = call ubyte %llvm.ctlz( ubyte %x )
ret ubyte %tmp.1
}
==>
zapnot $16,1,$0
CTLZ $0,$0
subq $0,56,$0
zapnot $0,1,$0
ret $31,($26),1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21691 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-04 19:11:05 +00:00
Andrew Lenharth
691ef2ba06
Implement count leading zeros (ctlz), count trailing zeros (cttz), and count
...
population (ctpop). Generic lowering is implemented, however only promotion
is implemented for SelectionDAG at the moment.
More coming soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21676 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-03 17:19:30 +00:00
Alkis Evlogimenos
b1beff0f0d
Do not use deprecated APIs
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21639 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-30 07:13:31 +00:00
Chris Lattner
f76e7dc8d8
Codegen and legalize sin/cos/llvm.sqrt as FSIN/FCOS/FSQRT calls. This patch
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was contributed by Morten Ofstad, with some minor tweaks and bug fixes added
by me.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21636 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-30 04:43:14 +00:00
Chris Lattner
b42a9ffbe9
Lower llvm.sqrt -> fsqrt/sqrt
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21629 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-30 04:07:50 +00:00
Chris Lattner
da6ba87d23
Legalize FSQRT, FSIN, FCOS nodes, patch contributed by Morten Ofstad
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21606 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-28 21:44:33 +00:00
Chris Lattner
7f64464ff1
Add FSQRT, FSIN, FCOS nodes, patch contributed by Morten Ofstad
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21605 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-28 21:44:03 +00:00
Andrew Lenharth
2d86ea21dd
Implement Value* tracking for loads and stores in the selection DAG. This enables one to use alias analysis in the backends.
...
(TRUNK)Stores and (EXT|ZEXT|SEXT)Loads have an extra SDOperand which is a SrcValueSDNode which contains the Value*. Note that if the operation is introduced by the backend, it will still have the operand, but the value* will be null.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21599 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-27 20:10:01 +00:00
Chris Lattner
d36f979085
Fold (X > -1) | (Y > -1) --> (X&Y > -1)
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21552 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-26 01:18:33 +00:00
Chris Lattner
229ab2e7b2
implement some more logical compares with constants, so that:
...
int foo1(int x, int y) {
int t1 = x >= 0;
int t2 = y >= 0;
return t1 & t2;
}
int foo2(int x, int y) {
int t1 = x == -1;
int t2 = y == -1;
return t1 & t2;
}
produces:
_foo1:
or r2, r4, r3
srwi r2, r2, 31
xori r3, r2, 1
blr
_foo2:
and r2, r4, r3
addic r2, r2, 1
li r2, 0
addze r3, r2
blr
instead of:
_foo1:
srwi r2, r4, 31
xori r2, r2, 1
srwi r3, r3, 31
xori r3, r3, 1
and r3, r2, r3
blr
_foo2:
addic r2, r4, 1
li r2, 0
addze r2, r2
addic r3, r3, 1
li r3, 0
addze r3, r3
and r3, r2, r3
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21547 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-25 21:20:28 +00:00
Chris Lattner
6ea9279304
Codegen x < 0 | y < 0 as (x|y) < 0. This allows us to compile this to:
...
_foo:
or r2, r4, r3
srwi r3, r2, 31
blr
instead of:
_foo:
srwi r2, r4, 31
srwi r3, r3, 31
or r3, r2, r3
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21544 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-25 21:03:25 +00:00
Misha Brukman
dedf2bd5a3
Convert tabs to spaces
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21439 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-22 04:01:18 +00:00
Misha Brukman
f976c856fc
Remove trailing whitespace
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21422 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 22:55:34 +00:00
Misha Brukman
edf128a7fa
Remove trailing whitespace
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 22:36:52 +00:00
Chris Lattner
588bbbffa1
Improve and elimination. On PPC, for:
...
bool %test(int %X) {
%Y = and int %X, 8
%Z = setne int %Y, 0
ret bool %Z
}
we now generate this:
rlwinm r2, r3, 0, 28, 28
srwi r3, r2, 3
instead of this:
rlwinm r2, r3, 0, 28, 28
srwi r2, r2, 3
rlwinm r3, r2, 0, 31, 31
I'll leave it to Nate to get it down to one instruction. :)
---------------------------------------------------------------------
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21391 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 06:28:15 +00:00
Chris Lattner
1c2a9b95dc
Fold (x & 8) != 0 and (x & 8) == 8 into (x & 8) >> 3.
...
This turns this PPC code:
rlwinm r2, r3, 0, 28, 28
cmpwi cr7, r2, 8
mfcr r2
rlwinm r3, r2, 31, 31, 31
into this:
rlwinm r2, r3, 0, 28, 28
srwi r2, r2, 3
rlwinm r3, r2, 0, 31, 31
Next up, nuking the extra and.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21390 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 06:12:41 +00:00
Chris Lattner
fda2b55e1b
Fold setcc of MVT::i1 operands into logical operations
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21319 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-18 04:48:12 +00:00
Chris Lattner
4a44c8df19
Another minor simplification: handle setcc (zero_extend x), c -> setcc(x, c')
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21318 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-18 04:30:45 +00:00
Chris Lattner
7467c9b086
Another simple xform
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21317 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-18 04:11:19 +00:00
Chris Lattner
706aa9685a
Fold:
...
// (X != 0) | (Y != 0) -> (X|Y != 0)
// (X == 0) & (Y == 0) -> (X|Y == 0)
Compiling this:
int %bar(int %a, int %b) {
entry:
%tmp.1 = setne int %a, 0
%tmp.2 = setne int %b, 0
%tmp.3 = or bool %tmp.1, %tmp.2
%retval = cast bool %tmp.3 to int
ret int %retval
}
to this:
_bar:
or r2, r3, r4
addic r3, r2, -1
subfe r3, r3, r2
blr
instead of:
_bar:
addic r2, r3, -1
subfe r2, r2, r3
addic r3, r4, -1
subfe r3, r3, r4
or r3, r2, r3
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21316 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-18 03:59:53 +00:00
Chris Lattner
36019aa5c6
Make the AND elimination operation recursive and significantly more powerful,
...
eliminating an and for Nate's testcase:
int %bar(int %a, int %b) {
entry:
%tmp.1 = setne int %a, 0
%tmp.2 = setne int %b, 0
%tmp.3 = or bool %tmp.1, %tmp.2
%retval = cast bool %tmp.3 to int
ret int %retval
}
generating:
_bar:
addic r2, r3, -1
subfe r2, r2, r3
addic r3, r4, -1
subfe r3, r3, r4
or r3, r2, r3
blr
instead of:
_bar:
addic r2, r3, -1
subfe r2, r2, r3
addic r3, r4, -1
subfe r3, r3, r4
or r2, r2, r3
rlwinm r3, r2, 0, 31, 31
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21315 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-18 03:48:41 +00:00
Nate Begeman
72ea281d61
Add a couple missing transforms in getSetCC that were triggering assertions
...
in the PPC Pattern ISel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21297 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-14 08:56:52 +00:00
Nate Begeman
eea805e74c
Disbale the broken fold of shift + sz[ext] for now
...
Move the transform for select (a < 0) ? b : 0 into the dag from ppc isel
Enable the dag to fold and (setcc, 1) -> setcc for targets where setcc
always produces zero or one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21291 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 21:23:31 +00:00
Chris Lattner
97e001dec7
fix an infinite loop
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21289 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 20:06:29 +00:00
Chris Lattner
fd8d389ede
fix some serious miscompiles on ia64, alpha, and ppc
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21288 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 19:53:40 +00:00
Chris Lattner
51679c430f
avoid work when possible, perhaps fix the problem nate and andrew are seeing
...
with != 0 comparisons vanishing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21287 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 19:41:05 +00:00
Chris Lattner
e9c35e7309
Implement expansion of unsigned i64 -> FP.
...
Note that this probably only works for little endian targets, but is enough
to get siod working :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21280 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 05:09:42 +00:00
Chris Lattner
ffe284c651
Make expansion of uint->fp cast assert out instead of infinitely recurse.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21275 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 03:42:14 +00:00
Chris Lattner
e666fcfbdd
add back the optimization that Nate added for shl X, (zext_inreg y)
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21273 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 02:58:13 +00:00
Chris Lattner
8a8dbfa57c
Oops, remove these too.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21272 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 02:47:57 +00:00
Chris Lattner
23993561e2
Instead of making ZERO_EXTEND_INREG nodes, use the helper method in
...
SelectionDAG to do the job with AND. Don't legalize Z_E_I anymore as
it is gone
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21266 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 02:38:47 +00:00
Chris Lattner
0f2287baa1
Remove all foldings of ZERO_EXTEND_INREG, moving them to work for AND nodes
...
instead. OVerall, this increases the amount of folding we can do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21265 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-13 02:38:18 +00:00
Nate Begeman
db81ebab89
Fold shift x, [sz]ext(y) -> shift x, y
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21262 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 23:32:28 +00:00
Nate Begeman
b882752bd0
Fold shift by size larger than type size to undef
...
Make llvm undef values generate ISD::UNDEF nodes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21261 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 23:12:17 +00:00
Chris Lattner
1c51c6ac13
promote extload i1 -> extload i8
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21258 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 20:30:10 +00:00
Chris Lattner
fd1f1ee0ba
Remove some redundant checks, add a couple of new ones. This allows us to
...
compile this:
int foo (unsigned long a, unsigned long long g) {
return a >= g;
}
To:
foo:
movl 8(%esp), %eax
cmpl %eax, 4(%esp)
setae %al
cmpl $0, 12(%esp)
sete %cl
andb %al, %cl
movzbl %cl, %eax
ret
instead of:
foo:
movl 8(%esp), %eax
cmpl %eax, 4(%esp)
setae %al
movzbw %al, %cx
movl 12(%esp), %edx
cmpl $0, %edx
sete %al
movzbw %al, %ax
cmpl $0, %edx
cmove %cx, %ax
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21244 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 02:54:39 +00:00
Chris Lattner
5b95ed652f
Emit comparisons against the sign bit better. Codegen this:
...
bool %test1(long %X) {
%A = setlt long %X, 0
ret bool %A
}
like this:
test1:
cmpl $0, 8(%esp)
setl %al
movzbl %al, %eax
ret
instead of:
test1:
movl 8(%esp), %ecx
cmpl $0, %ecx
setl %al
movzbw %al, %ax
cmpl $0, 4(%esp)
setb %dl
movzbw %dl, %dx
cmpl $0, %ecx
cmove %dx, %ax
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21243 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 02:19:10 +00:00
Chris Lattner
08b698e38d
Emit long comparison against -1 better. Instead of this (x86):
...
test2:
movl 8(%esp), %eax
notl %eax
movl 4(%esp), %ecx
notl %ecx
orl %eax, %ecx
cmpl $0, %ecx
sete %al
movzbl %al, %eax
ret
or this (PPC):
_test2:
nor r2, r4, r4
nor r3, r3, r3
or r2, r2, r3
cntlzw r2, r2
srwi r3, r2, 5
blr
Emit this:
test2:
movl 8(%esp), %eax
andl 4(%esp), %eax
cmpl $-1, %eax
sete %al
movzbl %al, %eax
ret
or this:
_test2:
.LBB_test2_0: ;
and r2, r4, r3
cmpwi cr0, r2, -1
li r3, 1
li r2, 0
beq .LBB_test2_2 ;
.LBB_test2_1: ;
or r3, r2, r2
.LBB_test2_2: ;
blr
it seems like the PPC isel could do better for R32 == -1 case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21242 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 01:46:05 +00:00
Chris Lattner
3b2c1d95a2
canonicalize x <u 1 -> x == 0. On this testcase:
...
unsigned long long g;
unsigned long foo (unsigned long a) {
return (a >= g) ? 1 : 0;
}
It changes the ppc code from:
_foo:
.LBB_foo_0: ; entry
mflr r11
stw r11, 8(r1)
bl "L00000$pb"
"L00000$pb":
mflr r2
addis r2, r2, ha16(L_g$non_lazy_ptr-"L00000$pb")
lwz r2, lo16(L_g$non_lazy_ptr-"L00000$pb")(r2)
lwz r4, 0(r2)
lwz r2, 4(r2)
cmplw cr0, r3, r2
li r2, 1
li r3, 0
bge .LBB_foo_2 ; entry
.LBB_foo_1: ; entry
or r2, r3, r3
.LBB_foo_2: ; entry
cmplwi cr0, r4, 1
li r3, 1
li r5, 0
blt .LBB_foo_4 ; entry
.LBB_foo_3: ; entry
or r3, r5, r5
.LBB_foo_4: ; entry
cmpwi cr0, r4, 0
beq .LBB_foo_6 ; entry
.LBB_foo_5: ; entry
or r2, r3, r3
.LBB_foo_6: ; entry
rlwinm r3, r2, 0, 31, 31
lwz r11, 8(r1)
mtlr r11
blr
to:
_foo:
.LBB_foo_0: ; entry
mflr r11
stw r11, 8(r1)
bl "L00000$pb"
"L00000$pb":
mflr r2
addis r2, r2, ha16(L_g$non_lazy_ptr-"L00000$pb")
lwz r2, lo16(L_g$non_lazy_ptr-"L00000$pb")(r2)
lwz r4, 0(r2)
lwz r2, 4(r2)
cmplw cr0, r3, r2
li r2, 1
li r3, 0
bge .LBB_foo_2 ; entry
.LBB_foo_1: ; entry
or r2, r3, r3
.LBB_foo_2: ; entry
cntlzw r3, r4
srwi r3, r3, 5
cmpwi cr0, r4, 0
beq .LBB_foo_4 ; entry
.LBB_foo_3: ; entry
or r2, r3, r3
.LBB_foo_4: ; entry
rlwinm r3, r2, 0, 31, 31
lwz r11, 8(r1)
mtlr r11
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21241 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 00:28:49 +00:00
Chris Lattner
bd0781ed12
Teach the dag mechanism that this:
...
long long test2(unsigned A, unsigned B) {
return ((unsigned long long)A << 32) + B;
}
is equivalent to this:
long long test1(unsigned A, unsigned B) {
return ((unsigned long long)A << 32) | B;
}
Now they are both codegen'd to this on ppc:
_test2:
blr
or this on x86:
test2:
movl 4(%esp), %edx
movl 8(%esp), %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21231 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-11 20:29:59 +00:00
Chris Lattner
ee27f57a6a
Fix expansion of shifts by exactly NVT bits on arch's (like X86) that have
...
masking shifts.
This fixes the miscompilation of this:
long long test1(unsigned A, unsigned B) {
return ((unsigned long long)A << 32) | B;
}
into this:
test1:
movl 4(%esp), %edx
movl %edx, %eax
orl 8(%esp), %eax
ret
allowing us to generate this instead:
test1:
movl 4(%esp), %edx
movl 8(%esp), %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21230 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-11 20:08:52 +00:00
Nate Begeman
c7c16575fe
Fix libcall code to not pass a NULL Chain to LowerCallTo
...
Fix libcall code to not crash or assert looking for an ADJCALLSTACKUP node
when it is known that there is no ADJCALLSTACKDOWN to match.
Expand i64 multiply when ISD::MULHU is legal for the target.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21214 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-11 03:01:51 +00:00
Chris Lattner
2bb6f41282
Don't bother sign/zext_inreg'ing the result of an and operation if we know
...
the result does change as a result of the extend.
This improves codegen for Alpha on this testcase:
int %a(ushort* %i) {
%tmp.1 = load ushort* %i
%tmp.2 = cast ushort %tmp.1 to int
%tmp.4 = and int %tmp.2, 1
ret int %tmp.4
}
Generating:
a:
ldgp $29, 0($27)
ldwu $0,0($16)
and $0,1,$0
ret $31,($26),1
instead of:
a:
ldgp $29, 0($27)
ldwu $0,0($16)
and $0,1,$0
addl $0,0,$0
ret $31,($26),1
btw, alpha really should switch to livein/outs for args :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21213 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-10 23:37:16 +00:00
Chris Lattner
01ff7216dd
Teach legalize to deal with targets that don't support some SEXTLOAD/ZEXTLOADs
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21212 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-10 22:54:25 +00:00
Chris Lattner
6841dec8c1
don't zextload fp values!
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21209 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-10 17:40:35 +00:00
Chris Lattner
232ee95a09
Until we have a dag combiner, promote using zextload's instead of extloads.
...
This gives the optimizer a bit of information about the top-part of the
value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21205 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-10 04:33:47 +00:00
Chris Lattner
45278e37eb
Fold zext_inreg(zextload), likewise for sext's
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21204 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-10 04:33:08 +00:00
Chris Lattner
edeecfcbd5
add a simple xform
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21203 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-10 04:04:49 +00:00
Chris Lattner
dea29e25c3
Fix a thinko. If the operand is promoted, pass the promoted value into
...
the new zero extend, not the original operand. This fixes cast bool -> long
on ppc.
Add an unrelated fixme
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21196 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-10 01:13:15 +00:00
Chris Lattner
a2daa8c78d
add a little peephole optimization. This allows us to codegen:
...
int a(short i) {
return i & 1;
}
as
_a:
andi. r3, r3, 1
blr
instead of:
_a:
rlwinm r2, r3, 0, 16, 31
andi. r3, r2, 1
blr
on ppc. It should also help the other risc targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21189 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 21:43:54 +00:00
Chris Lattner
8e7d87b228
there is no need to remove this instruction, linscan does it already as it
...
removes noop moves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21183 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 16:24:20 +00:00
Chris Lattner
799a919dbc
Adjust live intervals to support a livein set
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21182 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 16:17:50 +00:00
Chris Lattner
d493b34d31
Consider the livein/out set for a function, allowing targets to not have to
...
use ugly imp_def/imp_uses for arguments and return values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21180 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 15:23:25 +00:00
Chris Lattner
59723e9698
recognize some patterns as fabs operations, so that fabs at the source level
...
is deconstructed then reconstructed here. This catches 19 fabs's in 177.mesa
9 in 168.wupwise, 5 in 171.swim, 3 in 172.mgrid, and 14 in 173.applu out of
specfp2000.
This allows the X86 code generator to make MUCH better code than before for
each of these and saves one instr on ppc.
This depends on the previous CFE patch to expose these correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21171 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 05:15:53 +00:00
Chris Lattner
e7ccd4acd2
Emit BRCONDTWOWAY when possible.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21167 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 03:30:29 +00:00
Chris Lattner
411e888c1b
Legalize BRCONDTWOWAY into a BRCOND/BR pair if a target doesn't support it.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21166 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 03:30:19 +00:00
Chris Lattner
ef847df087
print and fold BRCONDTWOWAY correctly
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21165 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 03:27:28 +00:00
Chris Lattner
485df9b84b
canonicalize a bunch of operations involving fneg
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21160 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09 03:02:46 +00:00
Chris Lattner
5a6bace3ab
If a target zero or sign extends the result of its setcc, allow folding of
...
this into sign/zero extension instructions later.
On PPC, for example, this testcase:
%G = external global sbyte
implementation
void %test(int %X, int %Y) {
%C = setlt int %X, %Y
%D = cast bool %C to sbyte
store sbyte %D, sbyte* %G
ret void
}
Now codegens to:
cmpw cr0, r3, r4
li r3, 1
li r4, 0
blt .LBB_test_2 ;
.LBB_test_1: ;
or r3, r4, r4
.LBB_test_2: ;
addis r2, r2, ha16(L_G$non_lazy_ptr-"L00000$pb")
lwz r2, lo16(L_G$non_lazy_ptr-"L00000$pb")(r2)
stb r3, 0(r2)
instead of:
cmpw cr0, r3, r4
li r3, 1
li r4, 0
blt .LBB_test_2 ;
.LBB_test_1: ;
or r3, r4, r4
.LBB_test_2: ;
*** rlwinm r3, r3, 0, 31, 31
addis r2, r2, ha16(L_G$non_lazy_ptr-"L00000$pb")
lwz r2, lo16(L_G$non_lazy_ptr-"L00000$pb")(r2)
stb r3, 0(r2)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21148 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-07 19:43:53 +00:00
Chris Lattner
2467392c59
Remove somethign I had for testing
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21144 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-07 18:58:54 +00:00
Chris Lattner
67255a1d17
This patch does two things. First, it canonicalizes 'X >= C' -> 'X > C-1'
...
(likewise for <= >=u >=u).
Second, it implements a special case hack to turn 'X gtu SINTMAX' -> 'X lt 0'
On powerpc, for example, this changes this:
lis r2, 32767
ori r2, r2, 65535
cmplw cr0, r3, r2
bgt .LBB_test_2
into:
cmpwi cr0, r3, 0
blt .LBB_test_2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21142 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-07 18:14:58 +00:00
Chris Lattner
8e8bd656b3
Fix a really scary bug that Nate found where we weren't deleting the right
...
elements auto of the autoCSE maps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21128 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-07 00:30:13 +00:00
Nate Begeman
f1fe32e337
Teach ExpandShift how to handle shifts by a constant. This allows targets
...
like PowerPC to codegen long shifts in many fewer instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21122 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-06 21:13:14 +00:00
Nate Begeman
c105e19864
Expand SREM and UREM for targets that claim not to have them, like PowerPC
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21103 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-06 00:23:54 +00:00
Nate Begeman
1867054643
Add MULHU and MULHS nodes for the high part of an (un)signed 32x32=64b
...
multiply.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21102 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-05 22:36:56 +00:00
Chris Lattner
886dd9136f
Make sure to notice that explicit physregs are used in the function
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21084 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-04 21:35:34 +00:00
Nate Begeman
79e46acd35
Handle expanding arguments to ISD::TRUNCATE. This happens on PowerPC when
...
you have something like i16 = truncate i64. This fixes Regression/C/casts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21073 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-04 00:57:08 +00:00
Chris Lattner
06098e0e9b
Fix sign_extend and zero_extend of promoted value types to expanded value
...
types. This occurs when casting short to long on PPC for example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21072 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-03 23:41:52 +00:00
Duraid Madina
855a519741
add support for prefix/suffix strings to go around GlobalValue(s)
...
(which may or be function pointers) in the asmprinter. For the moment,
this changes nothing, except the IA64 backend which can use this to write:
data8.ua @fptr(blah__blah__mangled_function_name)
(by setting FunctionAddrPrefix/Suffix to "@fptr(" / ")")
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21024 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 12:21:51 +00:00
Chris Lattner
c0f18152d9
transform fabs/fabsf calls into FABS nodes.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21014 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 05:26:53 +00:00
Chris Lattner
4af6e0d783
Expand fabs into fneg
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21013 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 05:26:37 +00:00
Chris Lattner
b9fccc4193
Turn -0.0 - X -> fneg
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21011 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 05:04:50 +00:00
Chris Lattner
2c8086f4b9
Several changes mixed up here. First when legalizing a DAG with pcmarker,
...
dont' regen the whole dag if unneccesary. Second, fix and ugly bug with
the _PARTS nodes that caused legalize to produce multiples of them.
Finally, implement initial support for FABS and FNEG. Currently FNEG is
the only one to be trusted though.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21009 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 05:00:07 +00:00
Chris Lattner
ff9fd0a99c
print fneg/fabs
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21008 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 04:58:41 +00:00
Chris Lattner
5b359c6c4f
fix some bugs in the implementation of SHL_PARTS and friends.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21004 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 04:00:59 +00:00
Chris Lattner
4759982a2d
Turn expanded shift operations into (e.g.) SHL_PARTS if the target supports it.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21002 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 03:38:53 +00:00
Chris Lattner
41be951a47
Print some new nodes
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21001 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 03:30:42 +00:00
Chris Lattner
f4b457987f
Fix a bug when inserting a libcall into a function with no other calls.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20999 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 03:22:40 +00:00
Nate Begeman
ea19cd51aa
Fix a warning about an unhandled switch case
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20994 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02 00:41:14 +00:00
Nate Begeman
fc1b1dad88
Add ISD::UNDEF node
...
Teach the SelectionDAG code how to expand and promote it
Have PPC32 LowerCallTo generate ISD::UNDEF for int arg regs used up by fp
arguments, but not shadowing their value. This allows us to do the right
thing with both fixed and vararg floating point arguments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20988 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-01 22:34:39 +00:00
Chris Lattner
380ae49599
print the machine CFG in the -print-machineinstrs dump
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20976 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-01 06:48:38 +00:00
Andrew Lenharth
95762124a1
PCMarker support for DAG and Alpha
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20965 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-31 21:24:06 +00:00
Chris Lattner
a33ef4816d
Instead of setting up the CFG edges at selectiondag construction time, set
...
them up after the code has been emitted. This allows targets to select one
mbb as multiple mbb's as needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20937 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-30 01:10:47 +00:00
Chris Lattner
f51d3bd676
Fix a bug that andrew noticed where we do not correctly sign/zero extend
...
returned integer values all of the way to 64-bits (we only did it to 32-bits
leaving the top bits undefined). This causes problems for targets like alpha
whose ABI's define the top bits too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20926 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-29 19:09:56 +00:00
Chris Lattner
d4e50bb2e2
implement legalization of build_pair for nate
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20901 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-28 22:03:13 +00:00
Andrew Lenharth
7f4ec3b2e3
First step in adding pcmarker intrinsic. Second step (soon) is adding backend support.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20900 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-28 20:05:49 +00:00
Nate Begeman
8e21e71b24
Change interface to LowerCallTo to take a boolean isVarArg argument.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20842 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 01:29:23 +00:00
Chris Lattner
5b3a4553c1
Fix the missing symbols problem Bill was hitting. Patch contributed by
...
Bill Wendling!!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20649 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-17 15:38:16 +00:00
Chris Lattner
e4d5c441e0
This mega patch converts us from using Function::a{iterator|begin|end} to
...
using Function::arg_{iterator|begin|end}. Likewise Module::g* -> Module::global_*.
This patch is contributed by Gabor Greif, thanks!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20597 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-15 04:54:21 +00:00
Chris Lattner
e97568c3c4
I didn't mean to check this in. :(
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20555 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-10 20:59:51 +00:00
Chris Lattner
ee639f1760
Fix a bug where we would incorrectly do a sign ext instead of a zero ext
...
because we were checking the wrong thing. Thanks to andrew for pointing
this out!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20554 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-10 20:55:51 +00:00
Chris Lattner
f768bba43f
Allow the live interval analysis pass to be a bit more aggressive about
...
numbering values in live ranges for physical registers.
The alpha backend currently generates code that looks like this:
vreg = preg
...
preg = vreg
use preg
...
preg = vreg
use preg
etc. Because vreg contains the value of preg coming in, each of the
copies back into preg contain that initial value as well.
In the case of the Alpha, this allows this testcase:
void "foo"(int %blah) {
store int 5, int *%MyVar
store int 12, int* %MyVar2
ret void
}
to compile to:
foo:
ldgp $29, 0($27)
ldiq $0,5
stl $0,MyVar
ldiq $0,12
stl $0,MyVar2
ret $31,($26),1
instead of:
foo:
ldgp $29, 0($27)
bis $29,$29,$0
ldiq $1,5
bis $0,$0,$29
stl $1,MyVar
ldiq $1,12
bis $0,$0,$29
stl $1,MyVar2
ret $31,($26),1
This does not seem to have any noticable effect on X86 code.
This fixes PR535.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20536 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-09 23:05:19 +00:00
Chris Lattner
14723c264d
constant fold FP_ROUND_INREG, ZERO_EXTEND_INREG, and SIGN_EXTEND_INREG
...
This allows the alpha backend to compile:
bool %test(uint %P) {
%c = seteq uint %P, 0
ret bool %c
}
into:
test:
ldgp $29, 0($27)
ZAP $16,240,$0
CMPEQ $0,0,$0
AND $0,1,$0
ret $31,($26),1
instead of:
test:
ldgp $29, 0($27)
ZAP $16,240,$0
ldiq $1,0
ZAP $1,240,$1
CMPEQ $0,$1,$0
AND $0,1,$0
ret $31,($26),1
... and fixes PR534.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20534 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-09 18:37:12 +00:00
Alkis Evlogimenos
d0656fc94d
Lower llvm.isunordered(a, b) into a != a | b != b.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20382 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-01 02:07:58 +00:00
Chris Lattner
0942b7caf1
Lower prefetch to a noop, patch contributed by Justin Wick!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20375 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-28 19:27:23 +00:00
Chris Lattner
84734ce8ef
Fix a bug in the 'store fpimm, ptr' -> 'store intimm, ptr' handling code.
...
Changing 'op' here caused us to not enter the store into a map, causing
reemission of the code!! In practice, a simple loop like this:
no_exit: ; preds = %no_exit, %entry
%indvar = phi uint [ %indvar.next, %no_exit ], [ 0, %entry ] ; <uint> [#uses=3]
%tmp.4 = getelementptr "complex long double"* %P, uint %indvar, uint 0 ; <double*> [#uses=1]
store double 0.000000e+00, double* %tmp.4
%indvar.next = add uint %indvar, 1 ; <uint> [#uses=2]
%exitcond = seteq uint %indvar.next, %N ; <bool> [#uses=1]
br bool %exitcond, label %return, label %no_exit
was being code gen'd to:
.LBBtest_1: # no_exit
movl %edx, %esi
shll $4, %esi
movl $0, 4(%eax,%esi)
movl $0, (%eax,%esi)
incl %edx
movl $0, (%eax,%esi)
movl $0, 4(%eax,%esi)
cmpl %ecx, %edx
jne .LBBtest_1 # no_exit
Note that we are doing 4 32-bit stores instead of 2. Now we generate:
.LBBtest_1: # no_exit
movl %edx, %esi
incl %esi
shll $4, %edx
movl $0, (%eax,%edx)
movl $0, 4(%eax,%edx)
cmpl %ecx, %esi
movl %esi, %edx
jne .LBBtest_1 # no_exit
This is much happier, though it would be even better if the increment of ESI
was scheduled after the compare :-/
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20265 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-22 07:23:39 +00:00
Misha Brukman
d3f03e4b50
Fix compilation errors with VS 2005, patch by Aaron Gray.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20231 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-17 21:39:27 +00:00
Chris Lattner
d8658616cf
Don't rely on doubles comparing identical to each other, which doesn't work
...
for 0.0 and -0.0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20230 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-17 20:17:32 +00:00
Chris Lattner
aa781b3404
Don't sink argument loads into loops or other bad places. This disables folding of argument loads with instructions that are not in the entry block.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20228 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-17 19:40:32 +00:00
Chris Lattner
27e192196f
Print GEP offsets as signed values instead of unsigned values. On X86, this
...
prints:
getelementptr (int* %A, int -1)
as: "(A) - 4" instead of "(A) + 18446744073709551612", which makes the
assembler much happier.
This fixes test/Regression/CodeGen/X86/2005-02-14-IllegalAssembler.ll,
and Benchmarks/Prolangs-C/cdecl with LLC on X86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20183 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-14 21:40:26 +00:00
Chris Lattner
595dc5408a
Fix a case where were incorrectly compiled cast from short to int on 64-bit
...
targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20030 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-04 18:39:19 +00:00
Andrew Lenharth
571c9c314f
fix constant pointer outputing on 64 bit machines
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20026 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-04 13:47:16 +00:00
Chris Lattner
272455b404
Fix yet another memset issue.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19986 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-02 03:44:41 +00:00
Chris Lattner
deb692e756
Fix some bugs andrew noticed legalizing memset for alpha
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19969 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-01 18:38:28 +00:00
Chris Lattner
bca81448ac
Improve conformance with the Misha spelling benchmark suite
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19930 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-30 00:09:23 +00:00
Chris Lattner
9d5d7598db
adjust to ilist changes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19924 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29 18:41:25 +00:00
Chris Lattner
99939d39c9
Alpha doesn't have a native f32 extload instruction.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19880 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-28 22:58:25 +00:00
Chris Lattner
e76ad6de40
implement legalization of truncates whose results and sources need to be
...
truncated, e.g. (truncate:i8 something:i16) on a 32 or 64-bit RISC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19879 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-28 22:52:50 +00:00
Chris Lattner
e560521f1a
Get alpha working with memset/memcpy/memmove
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19878 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-28 22:29:18 +00:00
Chris Lattner
13c184de29
CopyFromReg produces two values. Make sure that we remember that both are
...
legalized, and actually return the correct result when we legalize the chain first.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19866 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-28 06:27:38 +00:00
Chris Lattner
fed5577066
Silence optimized warnings.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19797 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 23:19:44 +00:00
Chris Lattner
3563015b0d
Simplify/speedup the PEI by not having to scan for uses of the callee saved
...
registers. This information is computed directly by the register allocator
now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19795 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 23:13:12 +00:00
Chris Lattner
786116337e
Update physregsused info.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19793 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 22:55:45 +00:00
Chris Lattner
0648b16c48
Update this pass to set PhysRegsUsed info in MachineFunction.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19792 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 22:51:56 +00:00
Chris Lattner
b0f31bf19b
Update these register allocators to set the PhysRegUsed info in MachineFunction.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19791 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 22:45:13 +00:00
Chris Lattner
ce9c41e77a
Add support for the PhysRegsUsed array.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19789 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 22:13:58 +00:00
Chris Lattner
92b9fcea7b
Speed this up a bit by making ModifiedRegs a vector<char> not vector<bool>
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19787 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 21:45:01 +00:00
Chris Lattner
9c32d3b798
Adjust to changes in SelectionDAG interfaces
...
The first half of correct chain insertion for libcalls. This is not enough
to fix Fhourstones yet though.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19781 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 04:42:50 +00:00
Chris Lattner
b48da39536
Remove the 3 HACK HACK HACKs I put in before, fixing them properly with
...
the new TLI that is available.
Implement support for handling out of range shifts. This allows us to
compile this code (a 64-bit rotate):
unsigned long long f3(unsigned long long x) {
return (x << 32) | (x >> (64-32));
}
into this:
f3:
mov %EDX, DWORD PTR [%ESP + 4]
mov %EAX, DWORD PTR [%ESP + 8]
ret
GCC produces this:
$ gcc t.c -masm=intel -O3 -S -o - -fomit-frame-pointer
..
f3:
push %ebx
mov %ebx, DWORD PTR [%esp+12]
mov %ecx, DWORD PTR [%esp+8]
mov %eax, %ebx
mov %edx, %ecx
pop %ebx
ret
The Simple ISEL produces (eww gross):
f3:
sub %ESP, 4
mov DWORD PTR [%ESP], %ESI
mov %EDX, DWORD PTR [%ESP + 8]
mov %ECX, DWORD PTR [%ESP + 12]
mov %EAX, 0
mov %ESI, 0
or %EAX, %ECX
or %EDX, %ESI
mov %ESI, DWORD PTR [%ESP]
add %ESP, 4
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19780 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 04:39:44 +00:00
Chris Lattner
ac9dc08c7f
Adjust to changes in SelectionDAG interface.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19779 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 04:36:26 +00:00
Chris Lattner
68cd65ea68
Get this to work for 64-bit systems.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19763 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-22 23:04:37 +00:00
Chris Lattner
5037a15910
Implicitly defined registers can clobber callee saved registers too!
...
This fixes the return-address-not-being-saved problem in the Alpha backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19741 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-22 00:49:16 +00:00
Chris Lattner
7cd50cf286
More bugfixes for IA64 shifts.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19739 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-22 00:33:03 +00:00
Chris Lattner
27ff112948
Fix problems with non-x86 targets.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19738 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-22 00:31:52 +00:00
Chris Lattner
a7306db5f7
Add a nasty hack to fix Alpha/IA64 multiplies by a power of two.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19737 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-22 00:20:42 +00:00
Chris Lattner
9bb86f46e1
Remove unneeded line.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19736 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-21 23:43:12 +00:00
Chris Lattner
1e7ceaf0a0
test commit
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19735 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-21 23:38:56 +00:00
Chris Lattner
a93ec3ebfb
Unary token factor nodes are unneeded.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19727 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-21 18:01:22 +00:00
Chris Lattner
77e77a6aa0
Refactor libcall code a bit. Initial implementation of expanding int -> FP
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operations for 64-bit integers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19724 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-21 06:05:23 +00:00
Chris Lattner
e5544f851a
Simplify the shift-expansion code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19721 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-20 20:29:23 +00:00
Chris Lattner
84f6788044
Expand add/sub into ADD_PARTS/SUB_PARTS instead of a non-existant libcall.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19715 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-20 18:52:28 +00:00
Chris Lattner
17eee18f40
implement add_parts/sub_parts.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19714 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-20 18:50:55 +00:00
Chris Lattner
2c49f27955
Support targets that do not use i8 shift amounts.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19707 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 22:31:21 +00:00
Chris Lattner
3ca6a2c72c
Add an assertion that would have made more sense to duraid
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19704 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 21:32:07 +00:00
Chris Lattner
3d9dffc586
Add support for targets that pass args in registers to calls.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19703 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 20:24:35 +00:00
Chris Lattner
1e81b9e511
Fold single use token factor nodes into other token factor nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19701 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 19:10:54 +00:00
Chris Lattner
ec39a45bdb
Realize the individual pieces of an expanded copytoreg/store/load are
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independent of each other.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19700 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 18:02:17 +00:00
Chris Lattner
39908e0ce0
Know some identities about tokenfactor nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19699 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 18:01:40 +00:00
Chris Lattner
88218ef706
Know some simple identities. This improves codegen for (1LL << N).
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19698 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 17:29:49 +00:00
Chris Lattner
2a6e163edc
Just in case, handle something that is both a use and a def.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19696 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 17:11:51 +00:00
Chris Lattner
d45be36965
When an instruction moves, make sure to update the VarInfo::Kills list as
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well as all of teh other stuff in livevar. This fixes the compiler crash
on fourinarow last night.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19695 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 17:09:15 +00:00
Chris Lattner
c71d6949b9
Use the TargetInstrInfo::commuteInstruction method to commute instructions
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instead of doing it manually.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19685 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 07:08:42 +00:00
Chris Lattner
e34b396ab7
Implement a way of expanding shifts. This applies to targets that offer
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select operations or to shifts that are by a constant. This automatically
implements (with no special code) all of the special cases for shift by 32,
shift by < 32 and shift by > 32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19679 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 04:19:40 +00:00
Chris Lattner
d6e496732b
Add a hook to find out how the target handles shift amounts that are out of
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range. Either they are undefined (the default), they mask the shift amount
to the size of the register (X86, Alpha, etc), or they extend the shift (PPC).
This defaults to undefined, which is conservatively correct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19677 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 03:36:14 +00:00
Chris Lattner
d5d5682512
Zero is cheaper than sign extend.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19675 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 21:57:59 +00:00
Chris Lattner
47e9223e06
Fix some fixmes (promoting bools for select and brcond), fix promotion
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of zero and sign extends.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19671 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 19:27:06 +00:00
Chris Lattner
4a9b4f1943
Keep track of the retval type as well.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19670 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 19:26:36 +00:00
Chris Lattner
ef5cd1d3cf
Teach legalize to promote copy(from|to)reg, instead of making the isel pass
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do it. This results in better code on X86 for floats (because if strict
precision is not required, we can elide some more expensive double -> float
conversions like the old isel did), and allows other targets to emit
CopyFromRegs that are not legal for arguments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19668 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 17:54:55 +00:00
Chris Lattner
82fbfb6984
Teach legalize to promote SetCC results.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19657 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 02:59:52 +00:00
Chris Lattner
f30b73b1c6
Allow setcc operations to have nonbool types.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19656 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 02:52:03 +00:00
Chris Lattner
6e4e7652d8
Fix the completely broken FP constant folds for setcc's.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19651 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 02:11:55 +00:00
Chris Lattner
d3948116b8
Non-volatile loads can be freely reordered against each other. This fixes
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X86/reg-pressure.ll again, and allows us to do nice things in other cases.
For example, we now codegen this sort of thing:
int %loadload(int *%X, int* %Y) {
%Z = load int* %Y
%Y = load int* %X ;; load between %Z and store
%Q = add int %Z, 1
store int %Q, int* %Y
ret int %Y
}
Into this:
loadload:
mov %EAX, DWORD PTR [%ESP + 4]
mov %EAX, DWORD PTR [%EAX]
mov %ECX, DWORD PTR [%ESP + 8]
inc DWORD PTR [%ECX]
ret
where we weren't able to form the 'inc [mem]' before. This also lets the
instruction selector emit loads in any order it wants to, which can be good
for register pressure as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19644 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-17 22:19:26 +00:00
Chris Lattner
a651cf67b7
Don't call SelectionDAG.getRoot() directly, go through a forwarding method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19642 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-17 19:43:36 +00:00
Chris Lattner
0afa8e348e
Implement a target independent optimization to codegen arguments only into
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the basic block that uses them if possible. This is a big win on X86, as it
lets us fold the argument loads into instructions and reduce register pressure
(by not loading all of the arguments in the entry block).
For this (contrived to show the optimization) testcase:
int %argtest(int %A, int %B) {
%X = sub int 12345, %A
br label %L
L:
%Y = add int %X, %B
ret int %Y
}
we used to produce:
argtest:
mov %ECX, DWORD PTR [%ESP + 4]
mov %EAX, 12345
sub %EAX, %ECX
mov %EDX, DWORD PTR [%ESP + 8]
.LBBargtest_1: # L
add %EAX, %EDX
ret
now we produce:
argtest:
mov %EAX, 12345
sub %EAX, DWORD PTR [%ESP + 4]
.LBBargtest_1: # L
add %EAX, DWORD PTR [%ESP + 8]
ret
This also fixes the FIXME in the code.
BTW, this occurs in real code. 164.gzip shrinks from 8623 to 8608 lines of
.s file. The stack frame in huft_build shrinks from 1644->1628 bytes,
inflate_codes shrinks from 116->108 bytes, and inflate_block from 2620->2612,
due to fewer spills.
Take that alkis. :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19639 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-17 17:55:19 +00:00
Chris Lattner
068a81e9fc
Refactor code into a new method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19635 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-17 17:15:02 +00:00
Chris Lattner
714b69d047
Shift and setcc types default to the pointer type.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19619 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 23:59:48 +00:00
Chris Lattner
8ac532c55e
Implement legalize of call nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19617 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 19:46:48 +00:00
Chris Lattner
55ba8fba75
Revamp supported ops. Instead of just being supported or not, we now keep
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track of how to deal with it, and provide the target with a hook that they
can use to legalize arbitrary operations in arbitrary ways.
Implement custom lowering for a couple of ops, implement promotion for select
operations (which x86 needs).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19613 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 07:29:19 +00:00
Chris Lattner
171453a284
add method stub
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19612 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 07:28:41 +00:00
Chris Lattner
4b7899343e
Don't mash stuff together.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19611 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 07:28:31 +00:00
Chris Lattner
cba82f9339
Use enums, move virtual dtor out of line.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19610 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 07:28:11 +00:00
Chris Lattner
f8161d83f0
Implement some more missing promotions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19606 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 05:06:12 +00:00
Chris Lattner
9467497ae2
Clarify assertion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19597 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 02:23:34 +00:00
Chris Lattner
7636512f59
Add assertions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19596 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 02:23:22 +00:00
Chris Lattner
c8ea3c4710
Add support for promoted registers being live across blocks.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19595 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 02:23:07 +00:00
Chris Lattner
cfdfe4ce4a
Set up identity transforms.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19584 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 01:20:18 +00:00
Chris Lattner
71c42a0190
Move some information into the TargetLowering object.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19583 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 01:11:45 +00:00
Chris Lattner
98e5c0e5e4
Use the new TLI method to get this.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19582 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 01:11:19 +00:00
Chris Lattner
bb97d81cc8
Move some information out of LegalizeDAG into the generic Target interface.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19581 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 01:10:58 +00:00
Chris Lattner
1713e73b8a
legalize a bunch of operations that I missed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19580 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 00:38:00 +00:00
Chris Lattner
fb849800ea
Add support for targets that require promotions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19579 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 00:37:38 +00:00
Chris Lattner
ff3e50cc39
Fix some serious bugs in promotion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19578 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 00:17:42 +00:00
Chris Lattner
950aa3ca2c
Eliminate unneeded extensions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19577 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 00:17:20 +00:00
Chris Lattner
8b6fa22e72
Implement promotion of a whole bunch more operators. I think that this is
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basically everything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19576 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 22:16:26 +00:00
Chris Lattner
8a389bb376
Print extra type for nodes with extra type info.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19575 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 21:11:37 +00:00
Chris Lattner
45b8caf1c5
Add support for legalizing FP_ROUND_INREG, SIGN_EXTEND_INREG, and
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ZERO_EXTEND_INREG for targets that don't support them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19573 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 07:15:18 +00:00
Chris Lattner
4ea6924444
Common code factored out.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19572 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 07:14:32 +00:00
Chris Lattner
0f69b29108
Add support for promoting ADD/MUL.
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Add support for new SIGN_EXTEND_INREG, ZERO_EXTEND_INREG, and FP_ROUND_INREG operators.
Realize that if we do any promotions, we need to iterate SelectionDAG
construction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19569 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 06:18:18 +00:00
Chris Lattner
859157daee
Add new SIGN_EXTEND_INREG, ZERO_EXTEND_INREG, and FP_ROUND_INREG operators.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19568 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 06:17:04 +00:00
Chris Lattner
03c8546ec5
Add intitial support for promoting some operators.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19565 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 05:21:40 +00:00
Chris Lattner
69a52155d2
Adjust to CopyFromReg changes, implement deletion of truncating/extending
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stores/loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19562 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-14 22:38:01 +00:00
Chris Lattner
2ee743ff9b
Start implementing truncating stores and extending loads.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19559 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-14 22:08:15 +00:00
Chris Lattner
8f1d6402ba
Improve compatibility with acc
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19549 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-14 15:54:24 +00:00
Chris Lattner
18c2f13e0f
Add new ImplicitDef node, rename CopyRegSDNode class to RegSDNode.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19535 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 20:50:02 +00:00
Chris Lattner
5a6c6d98d5
Don't forget the existing root.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19531 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 19:53:14 +00:00
Chris Lattner
ddb870b065
Codegen independent ops as being independent.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19528 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 17:59:43 +00:00
Chris Lattner
a385e9b20f
Legalize new node, add assertion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19527 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 17:59:25 +00:00
Chris Lattner
282c5cae89
Print new node.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19526 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 17:59:10 +00:00
Chris Lattner
2f0ca79a75
Do not fold (zero_ext (sign_ext V)) -> (sign_ext V), they are not the same.
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This fixes llvm-test/SingleSource/Regression/C/casts.c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19519 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-12 18:51:15 +00:00
Chris Lattner
5c88456227
New method
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19517 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-12 18:37:47 +00:00
Chris Lattner
2dad454af6
Fix sign extend to long. When coming from sbyte, we used to generate:
...
movsbl 4(%esp), %eax
movl %eax, %edx
sarl $7, %edx
Now we generate:
movsbl 4(%esp), %eax
movl %eax, %edx
sarl $31, %edx
Which is right.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19515 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-12 18:19:52 +00:00
Reid Spencer
3bfbf4ea99
Shut up warnings with GCC 3.4.3 about uninitialized variables.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19512 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-12 14:53:45 +00:00
Chris Lattner
7944d9d995
Add an option to view the selection dags as they are generated.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19498 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-12 03:41:21 +00:00
Chris Lattner
c871e1d56f
Print the value types in the nodes of the graph
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19485 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 22:21:04 +00:00
Chris Lattner
f1fdacae8c
add an assertion, avoid creating copyfromreg/copytoreg pairs that are the
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same for PHI nodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19484 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 22:03:46 +00:00
Chris Lattner
7abf820182
Clear the whole array, always.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19482 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 20:25:26 +00:00
Chris Lattner
64da653ba9
Squelch optimized warning.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19475 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 17:46:49 +00:00
Chris Lattner
e1bd822ddb
Teach legalize to lower MEMSET/MEMCPY/MEMMOVE operations if the target
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does not support them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19465 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 05:57:22 +00:00
Chris Lattner
4c633e82f6
Print new operations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19464 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 05:57:01 +00:00
Chris Lattner
7041ee35ad
Turn memset/memcpy/memmove into the corresponding operations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19463 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 05:56:49 +00:00
Chris Lattner
a8d9cc8705
shift X, 0 -> X
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19453 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 04:25:13 +00:00
Chris Lattner
e9c44cdf18
Print SelectionDAGs bottom up, include extra info in the node labels
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19447 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 00:34:33 +00:00
Chris Lattner
fc08d9c789
Add a marker for the graph root.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19445 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 23:52:04 +00:00
Chris Lattner
e0646b86e3
Put the operation name in each node, put the function name on the graph.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19444 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 23:26:00 +00:00