Evan Cheng
cf71da05b0
Don't sink the instruction if TargetRegisterInfo::isSafeToMoveRegClassDefs doesn't think it's safe. This works around PR1911.
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llvm-svn: 63994
2009-02-07 01:21:47 +00:00
Dan Gohman
8271066844
Tidy up #includes, deleting a bunch of unnecessary #includes.
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llvm-svn: 61715
2009-01-05 17:59:02 +00:00
Dan Gohman
30c5ce1b7d
Switch the MachineOperand accessors back to the short names like
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isReg, etc., from isRegister, etc.
llvm-svn: 57006
2008-10-03 15:45:36 +00:00
Dan Gohman
fa32c7c6d9
Remove isImm(), isReg(), and friends, in favor of
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isImmediate(), isRegister(), and friends, to avoid confusion
about having two different names with the same meaning. I'm
not attached to the longer names, and would be ok with
changing to the shorter names if others prefer it.
llvm-svn: 56189
2008-09-13 17:58:21 +00:00
Dan Gohman
e1f9be27bc
Tidy up several unbeseeming casts from pointer to intptr_t.
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llvm-svn: 55779
2008-09-04 17:05:41 +00:00
Dan Gohman
bab18cae46
Clean up the use of static and anonymous namespaces. This turned up
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several things that were neither in an anonymous namespace nor static
but not intended to be global.
llvm-svn: 51017
2008-05-13 00:00:25 +00:00
Evan Cheng
b9fc5d6d07
Refactor some code out of MachineSink into a MachineInstr query.
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llvm-svn: 48311
2008-03-13 00:44:09 +00:00
Dan Gohman
cabaec582f
Rename MRegisterInfo to TargetRegisterInfo.
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llvm-svn: 46930
2008-02-10 18:45:23 +00:00
Chris Lattner
efa13b2edd
implement support for sinking a load out the bottom of a block that
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has no stores between the load and the end of block. This works
great and sinks hundreds of stores, but we can't turn it on because
machineinstrs don't have volatility information and we don't want to
sink volatile stores :(
llvm-svn: 45894
2008-01-12 00:17:41 +00:00
Chris Lattner
bfffa4f21e
Simplify the side effect stuff a bit more and make licm/sinking
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both work right according to the new flags.
This removes the TII::isReallySideEffectFree predicate, and adds
TII::isInvariantLoad.
It removes NeverHasSideEffects+MayHaveSideEffects and adds
UnmodeledSideEffects as machine instr flags. Now the clients
can decide everything they need.
I think isRematerializable can be implemented in terms of the
flags we have now, though I will let others tackle that.
llvm-svn: 45843
2008-01-10 23:08:24 +00:00
Chris Lattner
e5b817779c
Clamp down on sinking of lots of instructions.
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llvm-svn: 45841
2008-01-10 22:35:15 +00:00
Chris Lattner
0d444b96ac
The current impl is really trivial, add some comments about how it can be made better.
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llvm-svn: 45625
2008-01-05 06:47:58 +00:00
Chris Lattner
9e7943159e
don't sink anything with side effects, this makes lots of stuff work, but sinks almost nothing.
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llvm-svn: 45617
2008-01-05 02:33:22 +00:00
Chris Lattner
377c720459
fix a common crash.
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llvm-svn: 45614
2008-01-05 01:39:17 +00:00
Chris Lattner
f4972fa569
Add a really quick hack at a machine code sinking pass, enabled with --enable-sinking.
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It is missing validity checks, so it is known broken. However, it is powerful enough
to compile this contrived code:
void test1(int C, double A, double B, double *P) {
double Tmp = A*A+B*B;
*P = C ? Tmp : A;
}
into:
_test1:
movsd 8(%esp), %xmm0
cmpl $0, 4(%esp)
je LBB1_2 # entry
LBB1_1: # entry
movsd 16(%esp), %xmm1
mulsd %xmm1, %xmm1
mulsd %xmm0, %xmm0
addsd %xmm1, %xmm0
LBB1_2: # entry
movl 24(%esp), %eax
movsd %xmm0, (%eax)
ret
instead of:
_test1:
movsd 16(%esp), %xmm0
mulsd %xmm0, %xmm0
movsd 8(%esp), %xmm1
movapd %xmm1, %xmm2
mulsd %xmm2, %xmm2
addsd %xmm0, %xmm2
cmpl $0, 4(%esp)
je LBB1_2 # entry
LBB1_1: # entry
movapd %xmm2, %xmm1
LBB1_2: # entry
movl 24(%esp), %eax
movsd %xmm1, (%eax)
ret
woo.
llvm-svn: 45570
2008-01-04 07:36:53 +00:00
