6353807fdc
Add a note about a note
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llvm-svn: 28355
2006-05-17 19:02:25 +00:00
eb755fc1b3
Make PPC call lowering more aggressive, making the isel matching code simple
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enough to be autogenerated.
llvm-svn: 28354
2006-05-17 19:00:46 +00:00
19aaaca293
Another typo. Pointed out by Nate Begeman.
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llvm-svn: 28353
2006-05-17 18:22:14 +00:00
751cd7653d
Fixed a LowerCallTo and LowerArguments bug. They were introducing illegal
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VBIT_VECTOR nodes. There were some confusion about the semantics of
getPackedTypeBreakdown(). e.g. for <4 x f32> it returns 1 and v4f32, not 4,
and f32.
llvm-svn: 28352
2006-05-17 18:16:39 +00:00
6dcec44fec
Fix an obvious bug in getPackedTypeBreakdown. Return 1 if type is legal.
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llvm-svn: 28351
2006-05-17 18:10:06 +00:00
2e266807c3
Add a CloneModule call that exposes the mapping of values from the old module
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to the new module. Patch provided by Nick Lewycky!
llvm-svn: 28349
2006-05-17 18:05:35 +00:00
62f1b83c0e
When we legalize target nodes, do not use getNode to create a new node,
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use UpdateNodeOperands to just update the operands! This is important because
getNode will allocate a new node if the node returns a flag and this breaks
assumptions in the legalizer that you can legalize some things multiple times
and get exactly the same results.
This latent bug was exposed by my ppc patch last night, and this fixes
gsm/toast.
llvm-svn: 28348
2006-05-17 18:00:08 +00:00
a1cec0106a
Add an assertion, avoid some unneeded work for each call. No functionality
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change.
llvm-svn: 28347
2006-05-17 17:55:45 +00:00
b1e9e37c58
Switch PPC over to a call-selection model where the lowering code creates
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the copyto/fromregs instead of making the PPCISD::CALL selection code create
them. This vastly simplifies the selection code, and moves the ABI handling
parts into one place.
llvm-svn: 28346
2006-05-17 06:01:33 +00:00
b7552a88d6
3 changes, 2 of which are cleanup one of which changes codegen:
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1. Rearrange code a bit so that the special case doesn't require indenting lots
of code.
2. Add comments describing PPC calling convention.
3. Only round up to 56-bytes of stack space for an outgoing call if the callee
is varargs. This saves a bit of stack space.
llvm-svn: 28342
2006-05-17 00:15:40 +00:00
f058f5aef1
implement passing/returning vector regs to calls, at least non-varargs calls.
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llvm-svn: 28341
2006-05-16 23:54:25 +00:00
b77ba73a29
Add support for calls that pass and return legal vectors.
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llvm-svn: 28340
2006-05-16 23:39:44 +00:00
aa40ec1b32
Instead of implementing LowerCallTo directly, let the default impl produce an
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ISD::CALL node, then custom lower that. This means that we only have to handle
LEGAL call operands/results, not every possible type. This allows us to
simplify the call code, shrinking it by about 1/3.
llvm-svn: 28339
2006-05-16 22:56:08 +00:00
aaa23d953f
Add a new ISD::CALL node, make the default impl of TargetLowering::LowerCallTo
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produce it.
llvm-svn: 28338
2006-05-16 22:53:20 +00:00
26e2fcd8b1
Simplify the argument counting logic by only incrementing the index.
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llvm-svn: 28335
2006-05-16 18:58:15 +00:00
76c47b50e7
Simplify the dead argument handling code.
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llvm-svn: 28334
2006-05-16 18:54:32 +00:00
318f0d2122
Vector args passed in registers don't reserve stack space.
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llvm-svn: 28333
2006-05-16 18:51:52 +00:00
4302e8fb67
Switch the PPC backend over to using FORMAL_ARGUMENTS for formal argument
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handling. This makes the lower argument code significantly simpler (we
only need to handle legal argument types).
Incidentally, this also implements support for vector argument registers,
so long as they are not on the stack.
llvm-svn: 28331
2006-05-16 18:18:50 +00:00
20eb2ce871
this should be 128 I think
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llvm-svn: 28330
2006-05-16 17:45:23 +00:00
1dc9ec5874
Move this code to a common place
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llvm-svn: 28329
2006-05-16 17:42:15 +00:00
c7df70db57
Implement the custom lowering hook right, returning values for all of the
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arguments at once.
llvm-svn: 28327
2006-05-16 17:14:26 +00:00
7b8b8bbbf9
Fix a bug I introduced yesterday, which broke functions with *no* arguments.
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llvm-svn: 28326
2006-05-16 17:08:35 +00:00
9fee442e63
X86 integer register classes naming changes. Make them consistent with FP, vector classes.
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llvm-svn: 28324
2006-05-16 07:21:53 +00:00
aa10fb7ebe
Make this print the right start pointer
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llvm-svn: 28321
2006-05-16 06:45:50 +00:00
3d82699605
Add a chain to FORMAL_ARGUMENTS. This is a minimal port of the X86 backend,
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it doesn't currently use/maintain the chain properly. Also, make the
X86ISelLowering.cpp file 80-col clean.
llvm-svn: 28320
2006-05-16 06:45:34 +00:00
788db2c812
Replace "../whatever.td" with "whatever.td", so that out-of-tree backends
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can just add lib/Target to TableGen includes.
llvm-svn: 28318
2006-05-16 06:39:36 +00:00
957cb6733a
Move function-live-in-handling code from the sdisel code to the scheduler.
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This code should be emitted after legalize, so it can't be in sdisel.
Note that the EmitFunctionEntryCode hook should be updated to operate on the
DAG. The X86 backend is the only one currently using this hook.
llvm-svn: 28315
2006-05-16 06:10:58 +00:00
52d0c78de8
Print the vreg that livein physregs are live in
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llvm-svn: 28314
2006-05-16 05:55:30 +00:00
5f0edfb849
Legalize FORMAL_ARGUMENTS nodes correctly, we don't want to legalize them once
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for each argument.
llvm-svn: 28313
2006-05-16 05:49:56 +00:00
d2ca9abf57
Fit in 80 cols
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llvm-svn: 28311
2006-05-16 04:20:24 +00:00
4abf33f56e
add an abort after every assert(0)
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llvm-svn: 28310
2006-05-15 22:34:39 +00:00
26bb7c467f
For PR777:
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Add an additional catch block to ensure that this function can't throw any
exceptions, even one's we're not expecting.
llvm-svn: 28309
2006-05-15 22:12:42 +00:00
fce45ffcd6
Improve comment, patch provided by Vladimir Prus!
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llvm-svn: 28307
2006-05-15 18:35:02 +00:00
04a9e38369
Remove some dead code, identified by coverity.
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llvm-svn: 28303
2006-05-15 05:48:32 +00:00
ffdc24b847
added a skeleton of the ARM backend
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llvm-svn: 28301
2006-05-14 22:18:28 +00:00
63539389ca
LoadLibraryPermanently can theoretically throw an exception. Do not propagate
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it out of 'ExecutionEngine::create'. This fixes a problem reported by coverity.
llvm-svn: 28293
2006-05-14 19:01:55 +00:00
78b8e977b2
Bug noticed, by inspection. Filename can be null.
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llvm-svn: 28292
2006-05-14 19:00:53 +00:00
f64397ba1a
This function is not documented as throwing an exception and callers don't
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handle it. Just silently fail.
llvm-svn: 28291
2006-05-14 18:53:09 +00:00
96749c4cec
inverted logic, caught by coverity
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llvm-svn: 28290
2006-05-14 18:46:52 +00:00
35515557c7
remove some dead code identified by coverity
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llvm-svn: 28289
2006-05-14 18:45:44 +00:00
47a6e63696
remove dead var
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llvm-svn: 28287
2006-05-14 18:34:36 +00:00
3237da073e
remove dead variables
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llvm-svn: 28286
2006-05-14 18:33:57 +00:00
18d0438148
Backing out last check-in for now. It's causing an infinite loop gccas lencode.
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llvm-svn: 28284
2006-05-14 06:46:03 +00:00
215280d8b9
Update comment.
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llvm-svn: 28283
2006-05-14 02:05:19 +00:00
99f2f79e2f
Fixing 2006-05-01-SchedCausingSpills.ll; some clean up
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llvm-svn: 28279
2006-05-13 08:22:24 +00:00
d1915cfa6f
Revert an un-intended change
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llvm-svn: 28278
2006-05-13 05:53:47 +00:00
3987a8532d
Add/Sub/Mul are safe to promote here as well. Incrementing a single-bit
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bitfield now gives this code:
_plus:
lwz r2, 0(r3)
rlwimi r2, r2, 0, 1, 31
xoris r2, r2, 32768
stw r2, 0(r3)
blr
instead of this:
_plus:
lwz r2, 0(r3)
srwi r4, r2, 31
slwi r4, r4, 31
addis r4, r4, -32768
rlwimi r2, r4, 0, 0, 0
stw r2, 0(r3)
blr
this can obviously still be improved.
llvm-svn: 28275
2006-05-13 02:16:08 +00:00
69a0ce6261
Merge identical code.
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llvm-svn: 28274
2006-05-13 02:11:14 +00:00
1ebbe6a22e
Implement simple promotion for cast elimination in instcombine. This is
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currently very limited, but can be extended in the future. For example,
we now compile:
uint %test30(uint %c1) {
%c2 = cast uint %c1 to ubyte
%c3 = xor ubyte %c2, 1
%c4 = cast ubyte %c3 to uint
ret uint %c4
}
to:
_xor:
movzbl 4(%esp), %eax
xorl $1, %eax
ret
instead of:
_xor:
movb $1, %al
xorb 4(%esp), %al
movzbl %al, %eax
ret
More impressively, we now compile:
struct B { unsigned bit : 1; };
void xor(struct B *b) { b->bit = b->bit ^ 1; }
To (X86/PPC):
_xor:
movl 4(%esp), %eax
xorl $-2147483648, (%eax)
ret
_xor:
lwz r2, 0(r3)
xoris r2, r2, 32768
stw r2, 0(r3)
blr
instead of (X86/PPC):
_xor:
movl 4(%esp), %eax
movl (%eax), %ecx
movl %ecx, %edx
shrl $31, %edx
# TRUNCATE movb %dl, %dl
xorb $1, %dl
movzbl %dl, %edx
andl $2147483647, %ecx
shll $31, %edx
orl %ecx, %edx
movl %edx, (%eax)
ret
_xor:
lwz r2, 0(r3)
srwi r4, r2, 31
xori r4, r4, 1
rlwimi r2, r4, 31, 0, 0
stw r2, 0(r3)
blr
This implements InstCombine/cast.ll:test30.
llvm-svn: 28273
2006-05-13 02:06:03 +00:00
cd60d38b30
Remove some dead variables.
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Fix a nasty bug in the memcmp optimizer where we used the wrong variable!
llvm-svn: 28269
2006-05-12 23:35:26 +00:00
Chris Lattner