Chris Lattner
27e9b41464
Do not memoize ADJCALLSTACKDOWN nodes, provide a method to hack on them.
...
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
276260b16d
Print bit count nodes correctly
...
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
...
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
3c6910153c
Add support for READPORT, WRITEPORT, READIO, WRITEIO
...
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
...
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
...
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
...
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
2bf3c26b2b
Print SrcValue nodes correctly
...
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
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
Chris Lattner
7f64464ff1
Add FSQRT, FSIN, FCOS nodes, patch contributed by Morten Ofstad
...
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
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
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
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
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 $0, %edx
cmove %cx, %ax
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21244 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 02:54:39 +00:00
Chris Lattner
3b2c1d95a2
canonicalize x <u 1 -> x == 0. On this testcase:
...
unsigned long long g;
unsigned long foo (unsigned long a) {
return (a >= g) ? 1 : 0;
}
It changes the ppc code from:
_foo:
.LBB_foo_0: ; entry
mflr r11
stw r11, 8(r1)
bl "L00000$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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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.
...
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
17eee18f40
implement add_parts/sub_parts.
...
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
39908e0ce0
Know some identities about tokenfactor nodes.
...
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).
...
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
4a9b4f1943
Keep track of the retval type as well.
...
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
f30b73b1c6
Allow setcc operations to have nonbool types.
...
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.
...
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
068a81e9fc
Refactor code into a new method.
...
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
7636512f59
Add assertions.
...
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
950aa3ca2c
Eliminate unneeded extensions.
...
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
8a389bb376
Print extra type for nodes with extra type info.
...
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
4ea6924444
Common code factored out.
...
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
859157daee
Add new SIGN_EXTEND_INREG, ZERO_EXTEND_INREG, and FP_ROUND_INREG operators.
...
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
69a52155d2
Adjust to CopyFromReg changes, implement deletion of truncating/extending
...
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.
...
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
18c2f13e0f
Add new ImplicitDef node, rename CopyRegSDNode class to RegSDNode.
...
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
282c5cae89
Print new node.
...
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.
...
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
...
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
4c633e82f6
Print new operations.
...
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
a8d9cc8705
shift X, 0 -> X
...
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
d75f19fa42
Split out SDNode::getOperationName into its own method.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19443 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 23:25:25 +00:00
Chris Lattner
68dc310942
Implement a couple of more simplifications. This lets us codegen:
...
int test2(int * P, int* Q, int A, int B) {
return P+A == P;
}
into:
test2:
movl 4(%esp), %eax
movl 12(%esp), %eax
shll $2, %eax
cmpl $0, %eax
sete %al
movzbl %al, %eax
ret
instead of:
test2:
movl 4(%esp), %eax
movl 12(%esp), %ecx
leal (%eax,%ecx,4), %ecx
cmpl %eax, %ecx
sete %al
movzbl %al, %eax
ret
ICC is producing worse code:
test2:
movl 4(%esp), %eax #8.5
movl 12(%esp), %edx #8.5
lea (%edx,%edx), %ecx #9.9
addl %ecx, %ecx #9.9
addl %eax, %ecx #9.9
cmpl %eax, %ecx #9.16
movl $0, %eax #9.16
sete %al #9.16
ret #9.16
as is GCC (looks like our old code):
test2:
movl 4(%esp), %edx
movl 12(%esp), %eax
leal (%edx,%eax,4), %ecx
cmpl %edx, %ecx
sete %al
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19430 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 02:03:02 +00:00
Chris Lattner
87ae6ae41c
Fix incorrect constant folds, fixing Stepanov after the SHR patch.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19429 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 01:16:03 +00:00
Chris Lattner
8136d1f8cb
Constant fold shifts, turning this loop:
...
.LBB_Z5test0PdS__3: # no_exit.1
fldl data(,%eax,8)
fldl 24(%esp)
faddp %st(1)
fstl 24(%esp)
incl %eax
movl $16000, %ecx
sarl $3, %ecx
cmpl %eax, %ecx
fstpl 16(%esp)
#FP_REG_KILL
jg .LBB_Z5test0PdS__3 # no_exit.1
into:
.LBB_Z5test0PdS__3: # no_exit.1
fldl data(,%eax,8)
fldl 24(%esp)
faddp %st(1)
fstl 24(%esp)
incl %eax
cmpl $2000, %eax
fstpl 16(%esp)
#FP_REG_KILL
jl .LBB_Z5test0PdS__3 # no_exit.1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19427 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 00:07:15 +00:00
Chris Lattner
5cdcc58d51
Add some folds for == and != comparisons. This allows us to
...
codegen this loop in stepanov:
no_exit.i: ; preds = %entry, %no_exit.i, %then.i, %_Z5checkd.exit
%i.0.0 = phi int [ 0, %entry ], [ %i.0.0, %no_exit.i ], [ %inc.0, %_Z5checkd.exit ], [ %inc.012, %then.i ] ; <int> [#uses=3]
%indvar = phi uint [ %indvar.next, %no_exit.i ], [ 0, %entry ], [ 0, %then.i ], [ 0, %_Z5checkd.exit ] ; <uint> [#uses=3]
%result_addr.i.0 = phi double [ %tmp.4.i.i, %no_exit.i ], [ 0.000000e+00, %entry ], [ 0.000000e+00, %then.i ], [ 0.000000e+00, %_Z5checkd.exit ] ; <double> [#uses=1]
%first_addr.0.i.2.rec = cast uint %indvar to int ; <int> [#uses=1]
%first_addr.0.i.2 = getelementptr [2000 x double]* %data, int 0, uint %indvar ; <double*> [#uses=1]
%inc.i.rec = add int %first_addr.0.i.2.rec, 1 ; <int> [#uses=1]
%inc.i = getelementptr [2000 x double]* %data, int 0, int %inc.i.rec ; <double*> [#uses=1]
%tmp.3.i.i = load double* %first_addr.0.i.2 ; <double> [#uses=1]
%tmp.4.i.i = add double %result_addr.i.0, %tmp.3.i.i ; <double> [#uses=2]
%tmp.2.i = seteq double* %inc.i, getelementptr ([2000 x double]* %data, int 0, int 2000) ; <bool> [#uses=1]
%indvar.next = add uint %indvar, 1 ; <uint> [#uses=1]
br bool %tmp.2.i, label %_Z10accumulateIPddET0_T_S2_S1_.exit, label %no_exit.i
To this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
movl %eax, %ecx
shll $3, %ecx
cmpl $16000, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
instead of this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
leal data(,%eax,8), %ecx
leal data+16000, %edx
cmpl %edx, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19425 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:52:51 +00:00
Jeff Cohen
fd161e964a
Fix VC++ compilation error
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19423 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:41:56 +00:00
Chris Lattner
ea946cdb1b
Print the DAG out more like a DAG in nested format.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19422 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:38:33 +00:00
Chris Lattner
49d24716a4
Print out nodes sorted by their address to make it easier to find them in a list.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19421 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:26:36 +00:00
Chris Lattner
abd2182875
Add a simple transformation. This allows us to compile one of the inner
...
loops in stepanov to this:
.LBB_Z5test0PdS__2: # no_exit.1
fldl data(,%eax,8)
fldl 24(%esp)
faddp %st(1)
fstl 24(%esp)
incl %eax
cmpl $2000, %eax
fstpl 16(%esp)
#FP_REG_KILL
jl .LBB_Z5test0PdS__2
instead of this:
.LBB_Z5test0PdS__2: # no_exit.1
fldl data(,%eax,8)
fldl 24(%esp)
faddp %st(1)
fstl 24(%esp)
incl %eax
movl $data, %ecx
movl %ecx, %edx
addl $16000, %edx
subl %ecx, %edx
movl %edx, %ecx
sarl $2, %ecx
shrl $29, %ecx
addl %ecx, %edx
sarl $3, %edx
cmpl %edx, %eax
fstpl 16(%esp)
#FP_REG_KILL
jl .LBB_Z5test0PdS__2
The old instruction selector produced:
.LBB_Z5test0PdS__2: # no_exit.1
fldl 24(%esp)
faddl data(,%eax,8)
fstl 24(%esp)
movl %eax, %ecx
incl %ecx
incl %eax
leal data+16000, %edx
movl $data, %edi
subl %edi, %edx
movl %edx, %edi
sarl $2, %edi
shrl $29, %edi
addl %edi, %edx
sarl $3, %edx
cmpl %edx, %ecx
fstpl 16(%esp)
#FP_REG_KILL
jl .LBB_Z5test0PdS__2 # no_exit.1
Which is even worse!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19419 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:09:57 +00:00
Chris Lattner
ae0aacb833
Add support for FP->INT conversions and back.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19369 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 08:08:56 +00:00
Chris Lattner
623f70dd4c
1ULL << 64 is undefined, don't do it.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19365 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 06:24:30 +00:00
Chris Lattner
7c68ec6b70
Fix a pointer invalidation problem. This fixes Generic/badarg6.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19361 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 23:32:00 +00:00
Chris Lattner
5351e9b172
Fold conditional branches on constants away.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19360 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 22:49:57 +00:00
Chris Lattner
4287d5e355
Fix a thinko in the reassociation code, fixing Generic/badlive.ll
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19359 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 22:44:09 +00:00
Chris Lattner
fd8c39b773
Simplify: truncate ({zero|sign}_extend (X))
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19353 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 21:56:24 +00:00
Chris Lattner
0e12e6e041
Implement RemoveDeadNodes
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19345 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 21:09:16 +00:00
Chris Lattner
c3aae25116
Complete rewrite of the SelectionDAG class.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19327 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 07:46:32 +00:00
Reid Spencer
954da37bb4
Add #include <iostream> since Value.h does not #include it any more.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14622 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-04 12:19:56 +00:00
Chris Lattner
f70c22b019
Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID()
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14201 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-17 18:19:28 +00:00
Chris Lattner
e25738cab6
Finegrainify namespacification
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13948 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-02 04:28:06 +00:00
Brian Gaeke
d0fde30ce8
Put all LLVM code into the llvm namespace, as per bug 109.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-11 22:41:34 +00:00
John Criswell
b576c94c15
Added LLVM project notice to the top of every C++ source file.
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Header files will be on the way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-20 19:43:21 +00:00
Chris Lattner
7dc97ff180
Add a bunch of new node types, etc
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7875 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-15 04:53:16 +00:00
Chris Lattner
78ec311bd5
Initial checkin of SelectionDAG implementation. This is still rough and
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unfinished
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7717 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-11 14:57:33 +00:00