Commit Graph

20 Commits

Author SHA1 Message Date
Chris Lattner
d2bf432b2b Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145171 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 06:54:59 +00:00
Jakob Stoklund Olesen
dee83c90bb Also inflate register classes around inline asm.
Now that MI->getRegClassConstraint() can also handle inline assembly,
don't bail when recomputing the register class of a virtual register
used by inline asm.

This fixes PR11078.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141836 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-12 23:37:40 +00:00
Bill Wendling
456a925c61 Only access both operands of an INSERT_SUBVECTOR if it is an INSERT_SUBVECTOR.
Fixes PR10527.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136853 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-04 00:32:58 +00:00
Jakob Stoklund Olesen
b09701db9e Correctly handle <undef> tied uses when rewriting after a split.
This fixes PR10463. A two-address instruction with an <undef> use
operand was incorrectly rewritten so the def and use no longer used the
same register, violating the tie constraint.

Fix this by always rewriting <undef> operands with the register a def
operand would use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135885 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-24 20:23:50 +00:00
Jakob Stoklund Olesen
9693d4c3f0 Fix PR10277.
Remat during spilling triggers dead code elimination. If a phi-def
becomes unused, that may also cause live ranges to split into separate
connected components.

This type of splitting is different from normal live range splitting. In
particular, there may not be a common original interval.

When the split range is its own original, make sure that the new
siblings are also their own originals. The range being split cannot be
used as an original since it doesn't cover the new siblings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134413 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-05 15:38:41 +00:00
Bill Wendling
2d930db24f In some cases, the "fail BB dominator" may be null after the BB was split (and
becomes reachable when before it wasn't). Check to make sure that it's not null
before trying to use it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128434 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-28 23:02:18 +00:00
Chris Lattner
915eeb4887 when legalizing extremely wide shifts, make sure that
the shift amounts are in a suitably wide type so that
we don't generate out of range constant shift amounts.

This fixes PR9028.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125458 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13 09:10:56 +00:00
Chris Lattner
dec28ceb02 fix PR8514, a bug where the "heroic" transformation of shift/and
into and/shift would cause nodes to move around and a dangling pointer
to happen.  The code tried to avoid this with a HandleSDNode, but 
got the details wrong.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123578 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-16 08:48:11 +00:00
Chris Lattner
9cd3da47f9 fix PR8981, a crash trying to form a conditional inc with a floating point compare.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123560 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-16 02:56:53 +00:00
Jakob Stoklund Olesen
f2e4afd96c Allow copies between GR8_ABCD_L and GR8_ABCD_H.
This fixes PR7540.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107809 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07 20:33:27 +00:00
Bill Wendling
b545cde675 Move CodeGen/X86/2010-04-19-DAGCombineCrash.ll into CodeGen/X86/crash.ll. Also
reduce.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 18:14:47 +00:00
Chris Lattner
b1ceecefac this has a pr!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100637 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 18:04:56 +00:00
Chris Lattner
24ad3ed71f fix a latent bug my inline asm stuff exposed:
MachineOperand::isIdenticalTo wasn't handling metadata operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100636 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 18:03:19 +00:00
Chris Lattner
9cc0da9c29 Implement support for the case when a reference to a addr-of-bb
label is generated, but then the block is deleted.  Since the
value is undefined, we just emit the label right after the entry 
label of the function.  It might matter that the label is in the
same section as the function was afterall.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98579 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-15 20:39:00 +00:00
Chris Lattner
0220ba7995 Fix the case when a reference to an address taken BB is emitted in one
function, then the BB is RAUW'd before the definition is emitted.  There
are still two cases not being handled, but this should improve us back to
the situation before I touched anything.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98566 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-15 19:09:43 +00:00
Chris Lattner
c4a3f23b92 fix ShrinkDemandedOps to not leave dead nodes around,
fixing PR6607


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98512 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-14 19:46:02 +00:00
Chris Lattner
da0688e08a fix PR6605, X86ISD::CMP always returns i32 (EFLAGS), not
the operand type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98507 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-14 18:44:35 +00:00
Chris Lattner
b3e87b2262 fix PR6577, a bug in sdbuilder lowering select instructions
whose true value was not Val#0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98336 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-12 07:15:36 +00:00
Chris Lattner
f2f64e9063 fix PR6533 by updating the br(xor) code to remember the case
when it looked past a trunc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98203 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 23:46:44 +00:00
Chris Lattner
18fdabadca Fix PR6497, a bug where we'd fold a load into an addc
node which has a flag.  That flag in turn was used by an
already-selected adde which turned into an ADC32ri8 which
used a selected load which was chained to the load we
folded.  This flag use caused us to form a cycle.  Fix
this by not ignoring chains in IsLegalToFold even in
cases where the isel thinks it can.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97791 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 06:19:13 +00:00