Chris Lattner
4ccd406317
Now that we have operand info for machine instructions, use it to create
...
temporary registers for things that define a register. This allows dag->dag
isel to compile this:
int %test() { ret int 65535 }
into:
_test:
lis r2, 0
ori r2, r2, 65535
blr
Next up, getting CopyFromReg to work, allowing arguments and cross-bb values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22932 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-19 20:45:43 +00:00
Jeff Cohen
23c73a1823
Fix VC++ constant truncation warning.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22907 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-19 16:19:21 +00:00
Jeff Cohen
a92b7c36e9
Fix VC++ precedence warning.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22902 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-19 04:39:48 +00:00
Chris Lattner
ca6aa2f70c
Fix computation of # operands, add a temporary hack for CopyToReg
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22896 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-19 01:01:34 +00:00
Chris Lattner
068ca15d5e
add a new -view-sched-dags option to view dags as they are sent to the scheduler.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22878 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 20:11:49 +00:00
Chris Lattner
2d973e45b8
Implement the first chunk of a code emitter. This is sophisticated enough to
...
codegen:
_empty:
.LBB_empty_0: ;
blr
but can't do anything more (yet). :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22876 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 20:07:59 +00:00
Chris Lattner
d32b23690d
new file, obviously just a stub
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22868 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 18:45:24 +00:00
Chris Lattner
36b708f057
Enable critical edge splitting by default
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22863 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 17:35:14 +00:00
Nate Begeman
294a0a103d
Add support for target DAG nodes that take 4 operands, such as PowerPC's
...
rlwinm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22856 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 07:30:15 +00:00
Chris Lattner
a23e8154dc
Fix printing of VTSDNodes
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22853 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 03:31:02 +00:00
Jim Laskey
58b968be85
Move the code dependency for MathExtras.h from SelectionDAGNodes.h.
...
Added some class dividers in SelectionDAG.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22841 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 20:08:02 +00:00
Jim Laskey
cb6682fa44
Culling out use of unions for converting FP to bits and vice versa.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22838 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 19:34:49 +00:00
Chris Lattner
8b8749f367
Fix a bug in RemoveDeadNodes where it would crash when its "optional"
...
argument is not specified.
Implement ReplaceAllUsesWith.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22834 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 19:00:20 +00:00
Jim Laskey
02659d2363
Switched to using BitsToDouble for int_to_float to avoid aliasing problem.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22831 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 17:42:52 +00:00
Jim Laskey
491dfa88e4
Change hex float constants for the sake of VC++.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22828 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 09:44:59 +00:00
Chris Lattner
495a0b5191
Add a new beta option for critical edge splitting, to avoid a problem that
...
Nate noticed in yacr2 (and I know occurs in other places as well).
This is still rough, as the critical edge blocks are not intelligently placed
but is added to get some idea to see if this improves performance.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22825 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 06:37:43 +00:00
Chris Lattner
fae59b99b8
Fix a regression on X86, where FP values can be promoted too.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22822 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 06:06:25 +00:00
Jim Laskey
6269ed125f
Added generic code expansion for [signed|unsigned] i32 to [f32|f64] casts in the
...
legalizer. PowerPC now uses this expansion instead of ISel version.
Example:
// signed integer to double conversion
double f1(signed x) {
return (double)x;
}
// unsigned integer to double conversion
double f2(unsigned x) {
return (double)x;
}
// signed integer to float conversion
float f3(signed x) {
return (float)x;
}
// unsigned integer to float conversion
float f4(unsigned x) {
return (float)x;
}
Byte Code:
internal fastcc double %_Z2f1i(int %x) {
entry:
%tmp.1 = cast int %x to double ; <double> [#uses=1]
ret double %tmp.1
}
internal fastcc double %_Z2f2j(uint %x) {
entry:
%tmp.1 = cast uint %x to double ; <double> [#uses=1]
ret double %tmp.1
}
internal fastcc float %_Z2f3i(int %x) {
entry:
%tmp.1 = cast int %x to float ; <float> [#uses=1]
ret float %tmp.1
}
internal fastcc float %_Z2f4j(uint %x) {
entry:
%tmp.1 = cast uint %x to float ; <float> [#uses=1]
ret float %tmp.1
}
internal fastcc double %_Z2g1i(int %x) {
entry:
%buffer = alloca [2 x uint] ; <[2 x uint]*> [#uses=3]
%tmp.0 = getelementptr [2 x uint]* %buffer, int 0, int 0 ; <uint*> [#uses=1]
store uint 1127219200, uint* %tmp.0
%tmp.2 = cast int %x to uint ; <uint> [#uses=1]
%tmp.3 = xor uint %tmp.2, 2147483648 ; <uint> [#uses=1]
%tmp.5 = getelementptr [2 x uint]* %buffer, int 0, int 1 ; <uint*> [#uses=1]
store uint %tmp.3, uint* %tmp.5
%tmp.9 = cast [2 x uint]* %buffer to double* ; <double*> [#uses=1]
%tmp.10 = load double* %tmp.9 ; <double> [#uses=1]
%tmp.13 = load double* cast (long* %signed_bias to double*) ; <double> [#uses=1]
%tmp.14 = sub double %tmp.10, %tmp.13 ; <double> [#uses=1]
ret double %tmp.14
}
internal fastcc double %_Z2g2j(uint %x) {
entry:
%buffer = alloca [2 x uint] ; <[2 x uint]*> [#uses=3]
%tmp.0 = getelementptr [2 x uint]* %buffer, int 0, int 0 ; <uint*> [#uses=1]
store uint 1127219200, uint* %tmp.0
%tmp.1 = getelementptr [2 x uint]* %buffer, int 0, int 1 ; <uint*> [#uses=1]
store uint %x, uint* %tmp.1
%tmp.4 = cast [2 x uint]* %buffer to double* ; <double*> [#uses=1]
%tmp.5 = load double* %tmp.4 ; <double> [#uses=1]
%tmp.8 = load double* cast (long* %unsigned_bias to double*) ; <double> [#uses=1]
%tmp.9 = sub double %tmp.5, %tmp.8 ; <double> [#uses=1]
ret double %tmp.9
}
internal fastcc float %_Z2g3i(int %x) {
entry:
%buffer = alloca [2 x uint] ; <[2 x uint]*> [#uses=3]
%tmp.0 = getelementptr [2 x uint]* %buffer, int 0, int 0 ; <uint*> [#uses=1]
store uint 1127219200, uint* %tmp.0
%tmp.2 = cast int %x to uint ; <uint> [#uses=1]
%tmp.3 = xor uint %tmp.2, 2147483648 ; <uint> [#uses=1]
%tmp.5 = getelementptr [2 x uint]* %buffer, int 0, int 1 ; <uint*> [#uses=1]
store uint %tmp.3, uint* %tmp.5
%tmp.9 = cast [2 x uint]* %buffer to double* ; <double*> [#uses=1]
%tmp.10 = load double* %tmp.9 ; <double> [#uses=1]
%tmp.13 = load double* cast (long* %signed_bias to double*) ; <double> [#uses=1]
%tmp.14 = sub double %tmp.10, %tmp.13 ; <double> [#uses=1]
%tmp.16 = cast double %tmp.14 to float ; <float> [#uses=1]
ret float %tmp.16
}
internal fastcc float %_Z2g4j(uint %x) {
entry:
%buffer = alloca [2 x uint] ; <[2 x uint]*> [#uses=3]
%tmp.0 = getelementptr [2 x uint]* %buffer, int 0, int 0 ; <uint*> [#uses=1]
store uint 1127219200, uint* %tmp.0
%tmp.1 = getelementptr [2 x uint]* %buffer, int 0, int 1 ; <uint*> [#uses=1]
store uint %x, uint* %tmp.1
%tmp.4 = cast [2 x uint]* %buffer to double* ; <double*> [#uses=1]
%tmp.5 = load double* %tmp.4 ; <double> [#uses=1]
%tmp.8 = load double* cast (long* %unsigned_bias to double*) ; <double> [#uses=1]
%tmp.9 = sub double %tmp.5, %tmp.8 ; <double> [#uses=1]
%tmp.11 = cast double %tmp.9 to float ; <float> [#uses=1]
ret float %tmp.11
}
PowerPC Code:
.machine ppc970
.const
.align 2
.CPIl1__Z2f1i_0: ; float 0x4330000080000000
.long 1501560836 ; float 4.5036e+15
.text
.align 2
.globl l1__Z2f1i
l1__Z2f1i:
.LBBl1__Z2f1i_0: ; entry
xoris r2, r3, 32768
stw r2, -4(r1)
lis r2, 17200
stw r2, -8(r1)
lfd f0, -8(r1)
lis r2, ha16(.CPIl1__Z2f1i_0)
lfs f1, lo16(.CPIl1__Z2f1i_0)(r2)
fsub f1, f0, f1
blr
.const
.align 2
.CPIl2__Z2f2j_0: ; float 0x4330000000000000
.long 1501560832 ; float 4.5036e+15
.text
.align 2
.globl l2__Z2f2j
l2__Z2f2j:
.LBBl2__Z2f2j_0: ; entry
stw r3, -4(r1)
lis r2, 17200
stw r2, -8(r1)
lfd f0, -8(r1)
lis r2, ha16(.CPIl2__Z2f2j_0)
lfs f1, lo16(.CPIl2__Z2f2j_0)(r2)
fsub f1, f0, f1
blr
.const
.align 2
.CPIl3__Z2f3i_0: ; float 0x4330000080000000
.long 1501560836 ; float 4.5036e+15
.text
.align 2
.globl l3__Z2f3i
l3__Z2f3i:
.LBBl3__Z2f3i_0: ; entry
xoris r2, r3, 32768
stw r2, -4(r1)
lis r2, 17200
stw r2, -8(r1)
lfd f0, -8(r1)
lis r2, ha16(.CPIl3__Z2f3i_0)
lfs f1, lo16(.CPIl3__Z2f3i_0)(r2)
fsub f0, f0, f1
frsp f1, f0
blr
.const
.align 2
.CPIl4__Z2f4j_0: ; float 0x4330000000000000
.long 1501560832 ; float 4.5036e+15
.text
.align 2
.globl l4__Z2f4j
l4__Z2f4j:
.LBBl4__Z2f4j_0: ; entry
stw r3, -4(r1)
lis r2, 17200
stw r2, -8(r1)
lfd f0, -8(r1)
lis r2, ha16(.CPIl4__Z2f4j_0)
lfs f1, lo16(.CPIl4__Z2f4j_0)(r2)
fsub f0, f0, f1
frsp f1, f0
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22814 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 00:39:29 +00:00
Chris Lattner
37bfbb47de
add a new TargetConstant node
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22813 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 00:34:06 +00:00
Chris Lattner
d5d0f9bd20
Eliminate the RegSDNode class, which 3 nodes (CopyFromReg/CopyToReg/ImplicitDef)
...
used to tack a register number onto the node.
Instead of doing this, make a new node, RegisterSDNode, which is a leaf
containing a register number. These three operations just become normal
DAG nodes now, instead of requiring special handling.
Note that with this change, it is no longer correct to make illegal
CopyFromReg/CopyToReg nodes. The legalizer will not touch them, and this
is bad, so don't do it. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22806 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16 21:55:35 +00:00
Nate Begeman
7cbd525ba8
Implement BR_CC and BRTWOWAY_CC. This allows the removal of a rather nasty
...
fixme from the PowerPC backend. Emit slightly better code for legalizing
select_cc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22805 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16 19:49:35 +00:00
Chris Lattner
f3e133a35f
Allow passing a dag into dump and getOperationName. If one is available
...
when printing a node, use it to render target operations with their
target instruction name instead of "<<unknown>>".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22804 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16 18:33:07 +00:00
Chris Lattner
ad95d6ab20
Use a extant helper to do this.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22802 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16 18:31:23 +00:00
Chris Lattner
149c58ce0b
Add some methods for dag->dag isel.
...
Split RemoveNodeFromCSEMaps out of DeleteNodesIfDead to do it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22801 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16 18:17:10 +00:00
Nate Begeman
2d56e72f09
Fix last night's PPC32 regressions by
...
1. Not selecting the false value of a select_cc in the false arm, which
isn't legal for nested selects.
2. Actually returning the node we created and Legalized in the FP_TO_UINT
Expander.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22789 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-14 18:38:32 +00:00
Nate Begeman
d2558e3e4a
Teach the legalizer how to legalize FP_TO_UINT.
...
Teach the legalizer to promote FP_TO_UINT to FP_TO_SINT if the wider
FP_TO_UINT is also illegal. This allows us on PPC to codegen
unsigned short foo(float a) { return a; }
as:
_foo:
.LBB_foo_0: ; entry
fctiwz f0, f1
stfd f0, -8(r1)
lwz r2, -4(r1)
rlwinm r3, r2, 0, 16, 31
blr
instead of:
_foo:
.LBB_foo_0: ; entry
fctiwz f0, f1
stfd f0, -8(r1)
lwz r2, -4(r1)
lis r3, ha16(.CPI_foo_0)
lfs f0, lo16(.CPI_foo_0)(r3)
fcmpu cr0, f1, f0
blt .LBB_foo_2 ; entry
.LBB_foo_1: ; entry
fsubs f0, f1, f0
fctiwz f0, f0
stfd f0, -16(r1)
lwz r2, -12(r1)
xoris r2, r2, 32768
.LBB_foo_2: ; entry
rlwinm r3, r2, 0, 16, 31
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22785 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-14 01:20:53 +00:00
Nate Begeman
ff66368a5f
Remove an unncessary argument to SimplifySelectCC and add an additional
...
assert when creating a select_cc node.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22780 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-13 06:14:17 +00:00
Nate Begeman
32c392a3a5
Fix the fabs regression on x86 by abstracting the select_cc optimization
...
out into SimplifySelectCC. This allows both ISD::SELECT and ISD::SELECT_CC
to use the same set of simplifying folds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22779 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-13 06:00:21 +00:00
Chris Lattner
3e27b1f5c4
implement a couple of simple shift foldings.
...
e.g. (X & 7) >> 3 -> 0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22774 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-12 23:54:58 +00:00
Nate Begeman
e1fae4a3ae
Add a select_cc optimization for recognizing abs(int). This speeds up an
...
integer MPEG encoding loop by a factor of two.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22758 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-11 02:18:13 +00:00
Nate Begeman
e5d63829fd
Some SELECT_CC cleanups:
...
1. move assertions for node creation to getNode()
2. legalize the values returned in ExpandOp immediately
3. Move select_cc optimizations from SELECT's getNode() to SELECT_CC's,
allowing them to be cleaned up significantly.
This paves the way to pick up additional optimizations on SELECT_CC, such
as sum-of-absolute-differences.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22757 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-11 01:12:20 +00:00
Nate Begeman
9373a81e53
Add new node, SELECT_CC. This node is for targets that don't natively
...
implement SELECT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22755 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 20:51:12 +00:00
Chris Lattner
7c6e452d44
Fix an oversight that may be causing PR617.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22753 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 17:37:53 +00:00
Chris Lattner
bd8625b062
Fix spelling, fix some broken canonicalizations by my last patch
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22734 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 23:09:05 +00:00
Chris Lattner
079a27a0de
add cc nodes to the AllNodes list so they show up in Graphviz output
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22731 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 20:40:02 +00:00
Chris Lattner
7cf7e3f33f
Eliminate the SetCCSDNode in favor of a CondCodeSDNode class. This pulls the
...
CC out of the SetCC operation, making SETCC a standard ternary operation and
CC's a standard DAG leaf. This will make it possible for other node to use
CC's as operands in the future...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22728 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09 20:20:18 +00:00
Chris Lattner
660538c8a5
Handle 64-bit constant exprs on 64-bit targets.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22696 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-08 04:26:32 +00:00
Chris Lattner
bf3fa976ee
add a small simplification that can be exposed after promotion/expansion
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22691 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-07 05:00:44 +00:00
Chris Lattner
82299e7097
Change FindEarliestCallSeqEnd (used by libcall insertion) to use a set to
...
avoid revisiting nodes more than once. This eliminates a source of
potentially exponential behavior. For a small function in 191.fma3d
(hexah_stress_divergence_), this speeds up isel from taking > 20mins to
taking 0.07s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22680 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 18:10:27 +00:00
Chris Lattner
c534395cb2
Fix a use-of-dangling-pointer bug, from the introduction of SrcValue's.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22679 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 16:55:31 +00:00
Chris Lattner
2f4eca30d1
Fix a latent bug in the libcall inserter that was exposed by Nate's patch
...
yesterday. This fixes whetstone and a bunch of programs in the External tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22678 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 16:23:57 +00:00
Nate Begeman
2ac4fc0320
Fix a fixme in LegalizeDAG
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22661 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 21:43:28 +00:00
Misha Brukman
cd33eef1b2
* Unbreak release build
...
* Add comments to #endif pragmas for readability
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22647 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 14:22:41 +00:00
Chris Lattner
4c64dd7977
Fix PR611, codegen'ing SREM of FP operands to fmod or fmodf instead of
...
the sequence used for integer ops
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22629 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 20:31:37 +00:00
Chris Lattner
0561b3ff9f
Update to use the new MathExtras.h support for log2 computation.
...
Patch contributed by Jim Laskey!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22594 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02 19:26:06 +00:00
Chris Lattner
e21c305ed8
Fix casts from long to sbyte on ppc
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22570 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-01 18:16:37 +00:00
Jeff Cohen
d29b6aa608
Keep tabs and trailing spaces out.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22565 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30 18:33:25 +00:00
Chris Lattner
f20d183c22
fix float->long conversions on x86
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22563 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30 01:40:57 +00:00
Chris Lattner
f1fa74ee0d
Allow targets to have custom expanders for FP_TO_*INT conversions where
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both the src and dest values are legal
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22555 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-30 00:04:12 +00:00
Chris Lattner
80a3e94653
Allow targets to define custom expanders for FP_TO_*INT
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22548 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-29 00:33:32 +00:00
Chris Lattner
1618bebcf6
allow a target to request that unknown FP_TO_*INT conversion be promoted to
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a larger integer destination.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22547 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-29 00:11:56 +00:00
Chris Lattner
fa9c801a6b
instead of having all conversions be handled by one case value, and then have
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subcases inside, break things out earlier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22546 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-28 23:31:12 +00:00
Andrew Lenharth
fe660397e1
new is not a valid default anywhere, so make this pure virtual
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22542 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-28 18:13:59 +00:00
Chris Lattner
cef21c3544
Fix debug info to not print out recently freed memory.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22529 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27 23:11:25 +00:00
Chris Lattner
8e7a70976d
Print symbolic register names in debug dumps
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22528 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27 23:03:38 +00:00
Jeff Cohen
00b16889ab
Eliminate all remaining tabs and trailing spaces.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27 06:12:32 +00:00
Nate Begeman
700a3c97e9
Remove unnecessary FP_EXTEND. This causes worse codegen for SSE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22469 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-19 16:50:03 +00:00
Reid Spencer
a0f5bf306c
For: memory operations -> stores
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This is the first incremental patch to implement this feature. It adds no
functionality to LLVM but setup up the information needed from targets in
order to implement the optimization correctly. Each target needs to specify
the maximum number of store operations for conversion of the llvm.memset,
llvm.memcpy, and llvm.memmove intrinsics into a sequence of store operations.
The limit needs to be chosen at the threshold of performance for such an
optimization (generally smallish). The target also needs to specify whether
the target can support unaligned stores for multi-byte store operations.
This helps ensure the optimization doesn't generate code that will trap on
an alignment errors.
More patches to follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22468 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-19 04:52:44 +00:00
Chris Lattner
f4d32726e6
The assertion was wrong: the code only worked for i64. While we're at it,
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expand the code to work for all integer datatypes. This should unbreak
alpha.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22464 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-18 04:31:14 +00:00
Chris Lattner
0589523525
Only get the .bss and .data sections when needed instead of unconditionally.
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This allows is to not emit empty sections when .data or .bss is not used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22457 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16 17:41:06 +00:00
Chris Lattner
0003395320
Refactor getSection() method to make it easier to use.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22455 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16 17:36:04 +00:00
Chris Lattner
5f48ff7d1f
Major refactor of the ELFWriter code. Instead of building up one big
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vector that represents the .o file at once, build up a vector for each
section of the .o file. This is needed because the .o file writer needs
to be able to switch between sections as it emits them (e.g. switch
between the .text section and the .rel section when emitting code).
This patch has no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22453 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16 08:01:13 +00:00
Nate Begeman
5a8441ea3f
Teach the legalizer how to promote SINT_TO_FP to a wider SINT_TO_FP that
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the target natively supports. This eliminates some special-case code from
the x86 backend and generates better code as well.
For an i8 to f64 conversion, before & after:
_x87 before:
subl $2, %esp
movb 6(%esp), %al
movsbw %al, %ax
movw %ax, (%esp)
filds (%esp)
addl $2, %esp
ret
_x87 after:
subl $2, %esp
movsbw 6(%esp), %ax
movw %ax, (%esp)
filds (%esp)
addl $2, %esp
ret
_sse before:
subl $12, %esp
movb 16(%esp), %al
movsbl %al, %eax
cvtsi2sd %eax, %xmm0
addl $12, %esp
ret
_sse after:
subl $12, %esp
movsbl 16(%esp), %eax
cvtsi2sd %eax, %xmm0
addl $12, %esp
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22452 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16 02:02:34 +00:00
Chris Lattner
cad063f1a8
Break the code for expanding UINT_TO_FP operations out into its own
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SelectionDAGLegalize::ExpandLegalUINT_TO_FP method.
Add a new method, PromoteLegalUINT_TO_FP, which allows targets to request
that UINT_TO_FP operations be promoted to a larger input type. This is
useful for targets that have some UINT_TO_FP or SINT_TO_FP operations but
not all of them (like X86).
The same should be done with SINT_TO_FP, but this patch does not do that
yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22447 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-16 00:19:57 +00:00
Chris Lattner
6e741f8842
You can't use config options without config.h
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22446 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-15 22:48:31 +00:00
Chris Lattner
c5f44add43
Make this use the new autoconf support for finding the executables for
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gv and Graphviz.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22434 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-14 05:33:13 +00:00
Chris Lattner
e388b5ea2c
As discussed on IRC, this stuff is just for debugging.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22432 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-14 05:17:43 +00:00
Chris Lattner
f1a2f15ed3
If the Graphviz program is available, use it to visualize dot graphs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22429 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-14 01:10:55 +00:00
Chris Lattner
c087a43510
Fix Alpha/2005-07-12-TwoMallocCalls.ll and PR593.
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It is not safe to call LegalizeOp on something that has already been legalized.
Instead, just force another iteration of legalization.
This could affect all platforms but X86, as this codepath is dynamically
dead on X86 (ISD::MEMSET and friends are legal).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22419 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-13 02:00:04 +00:00
Chris Lattner
6814f1522d
Fix test/Regression/CodeGen/Generic/2005-07-12-memcpy-i64-length.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22417 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-13 01:42:45 +00:00
Chris Lattner
46c53054d0
Add support for 64-bit elf files
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22400 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-12 06:57:52 +00:00
Jeff Cohen
44213c9538
VC++ demands that the function returns a value
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22393 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-12 02:53:33 +00:00
Chris Lattner
0e18050797
Clean up code, no functionality changes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22382 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-11 06:34:30 +00:00
Chris Lattner
5fe7b6e2be
Emit a symbol table entry for each function we output to the ELF file. This
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allows objdump to know which function we are emitting to:
00000000 <foo>: <----
0: b8 01 00 00 00 mov $0x1,%eax
5: 03 44 24 04 add 0x4(%esp,1),%eax
9: c3 ret
... and allows .o files to be useful for linking :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22378 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-11 06:17:35 +00:00
Chris Lattner
aa507db59e
add code to emit the .text section to the section header.
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Add a *VERY INITIAL* machine code emitter class. This is enough to take
this C function:
int foo(int X) { return X +1; }
and make objdump produce the following:
$ objdump -d t-llvm.o
t-llvm.o: file format elf32-i386
Disassembly of section .text:
00000000 <.text>:
0: b8 01 00 00 00 mov $0x1,%eax
5: 03 44 24 04 add 0x4(%esp,1),%eax
9: c3 ret
Anything using branches or refering to the constant pool or requiring
relocations will not work yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22375 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-11 05:17:18 +00:00
Chris Lattner
5acd120078
Use a name mangler object to uniquify names and remove nonstandard
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characters from them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22371 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-11 03:11:47 +00:00
Chris Lattner
5f056bf4b8
Change *EXTLOAD to use an VTSDNode operand instead of being an MVTSDNode.
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This is the last MVTSDNode.
This allows us to eliminate a bunch of special case code for handling
MVTSDNodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22367 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-10 01:55:33 +00:00
Chris Lattner
9fadb4c1c0
Change TRUNCSTORE to use a VTSDNode operand instead of being an MVTSTDNode
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22366 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-10 00:29:18 +00:00
Chris Lattner
15e4b01920
Introduce a new VTSDNode class with the ultimate goal of eliminating the
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MVTSDNode class. This class is used to provide an operand to operators
that require an extra type. We start by converting FP_ROUND_INREG and
SIGN_EXTEND_INREG over to using it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22364 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-10 00:07:11 +00:00
Chris Lattner
4c47e3a1c5
Add support for emitting a .data section and .bss section.
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Add support for emitting external and .bss symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22358 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-08 05:47:00 +00:00
Chris Lattner
80ed8faaea
Add support for emitting the symbol table (and its string table) of the
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module to the ELF file. Test it by adding support for emitting common
symbols. This allows us to compile this:
%X = weak global int 0
%Y = weak global int 0
%Z = weak global int 0
to an elf file that 'readelf's this:
Symbol table '.symtab' contains 4 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 00000000 0 NOTYPE LOCAL DEFAULT UND
1: 00000004 4 OBJECT GLOBAL DEFAULT COM X
2: 00000004 4 OBJECT GLOBAL DEFAULT COM Y
3: 00000004 4 OBJECT GLOBAL DEFAULT COM Z
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22343 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-07 07:02:20 +00:00
Chris Lattner
e64e72b794
Make several cleanups to Andrews varargs change:
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1. Pass Value*'s into lowering methods so that the proper pointers can be
added to load/stores from the valist
2. Intrinsics that return void should only return a token chain, not a token
chain/retval pair.
3. Rename LowerVAArgNext -> LowerVAArg, because VANext is long gone.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22338 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-05 19:57:53 +00:00
Andrew Lenharth
f2eb1396b8
2 fixes:
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1: Legalize operand in UINT_TO_FP expanision
2: SRA x, const i8 was not promoting the constant to shift amount type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22337 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-05 19:52:39 +00:00
Andrew Lenharth
c6bead211b
I really didn't think this was necessary. But, Legalize wasn't running again
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and legalizing the extload. Strange. Should fix most alpha regressions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22329 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-02 20:58:53 +00:00
Andrew Lenharth
31559081a4
oops
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22320 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-30 19:32:57 +00:00
Andrew Lenharth
9d416f713e
FP EXTLOAD is not support on all archs, expand to LOAD and FP_EXTEND
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22319 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-30 19:22:37 +00:00
Andrew Lenharth
06ef88472f
restore old srcValueNode behavior and try to to work around it
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22315 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-29 18:54:02 +00:00
Andrew Lenharth
782ad62f33
tracking the instructions causing loads and stores provides more information than just the pointer being loaded or stored
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22311 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-29 15:57:19 +00:00
Andrew Lenharth
f4b3278aeb
Adapt the code for handling uint -> fp conversion for the 32 bit case to
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handling it in the 64 bit case. The two code paths should probably be merged.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22302 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-27 23:28:32 +00:00
Chris Lattner
35f0a4f24e
iniital checkin of ELFWriter implementation
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For now, the elf writer is only capable of emitting an empty elf file, with
a section table and a section table string table. This will be enhanced
in the future :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22291 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-27 06:29:00 +00:00
Andrew Lenharth
213e557cef
If we support structs as va_list, we must pass pointers to them to va_copy
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See last commit for LangRef, this implements it on all targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22273 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-22 21:04:42 +00:00
Andrew Lenharth
558bc88a00
core changes for varargs
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22254 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-18 18:34:52 +00:00
Nate Begeman
41aaf7016e
Fix bug 537 test 2, which checks to make sure that we fold A+(B-A) -> B for
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integer types. Add a couple checks to not perform these kinds of transform
on floating point values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22228 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-16 07:06:03 +00:00
Duraid Madina
4560657b4c
aCC and STLport complained about this, because they're like that
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22053 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-15 13:05:48 +00:00
Chris Lattner
e5eb6f829c
Add some simplifications for MULH[SU]. This allows us to compile this:
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long %bar(long %X) {
%Y = mul long %X, 4294967297
ret long %Y
}
to this:
l1_bar:
mov %EAX, DWORD PTR [%ESP + 4]
mov %EDX, %EAX
add %EDX, DWORD PTR [%ESP + 8]
ret
instead of:
l1_bar:
mov %ECX, DWORD PTR [%ESP + 4]
mov %EDX, 1
mov %EAX, %ECX
mul %EDX
add %EDX, %ECX
add %EDX, DWORD PTR [%ESP + 8]
mov %EAX, %ECX
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22044 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-15 05:39:08 +00:00
Chris Lattner
4fc997941d
When inserting callee-save register reloads, make sure to skip over any
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terminator instructions before the 'ret' in case the target has a
multi-instruction return sequence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22041 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-15 03:09:58 +00:00
Chris Lattner
1ca85d567c
Fix construction of ioport intrinsics, fixing X86/io.llx and io-port.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22026 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14 13:56:55 +00:00
Chris Lattner
2789bde57f
allow token chain at start or end of node
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22020 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14 08:34:53 +00:00
Chris Lattner
3e01136f9f
remove special case hacks for readport/readio from the binary operator
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codepath
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22019 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14 07:45:46 +00:00
Chris Lattner
385328ce41
Implement fixme's by memoizing nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22018 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14 07:42:29 +00:00