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1604 Commits

Author SHA1 Message Date
Chris Lattner
d685514e2e switch TargetLowering::getConstraintType to take the entire constraint, 
not just the first letter.  No functionality change.

llvm-svn: 35322
 2007-03-25 02:14:49 +00:00
Chris Lattner
2a991268f7 don't rely on ADL 
llvm-svn: 35299
 2007-03-24 17:37:03 +00:00
Evan Cheng
b7051f596a Adjust offset to compensate for big endian machines. 
llvm-svn: 35293
 2007-03-24 00:02:43 +00:00
Evan Cheng
a883b58caf Make sure SEXTLOAD of the specific type is supported on the target. 
llvm-svn: 35289
 2007-03-23 22:13:36 +00:00
Evan Cheng
e2f5f24e8e Also replace uses of SRL if that's also folded during ReduceLoadWidth(). 
llvm-svn: 35286
 2007-03-23 20:55:21 +00:00
Evan Cheng
a824e79f06 A couple of bug fixes for reducing load width xform: 
1. Address offset is in bytes.
2. Make sure truncate node uses are replaced with new load.

llvm-svn: 35274
 2007-03-23 02:16:52 +00:00
Dan Gohman
dcb291faa4 Change uses of Function::front to Function::getEntryBlock for readability. 
llvm-svn: 35265
 2007-03-22 16:38:57 +00:00
Evan Cheng
464dc9b74c More opportunities to reduce load size. 
llvm-svn: 35254
 2007-03-22 01:54:19 +00:00
Dale Johannesen
0c6bb5eab7 repair x86 performance, dejagnu problems from previous change 
llvm-svn: 35245
 2007-03-21 21:51:52 +00:00
Evan Cheng
d63baead9b fold (truncate (srl (load x), c)) -> (smaller load (x+c/vt bits)) 
llvm-svn: 35239
 2007-03-21 20:14:05 +00:00
Dale Johannesen
bacf4acf65 do not share old induction variables when this would result in invalid 
instructions (that would have to be split later)

llvm-svn: 35227
 2007-03-20 21:54:54 +00:00
Jeff Cohen
1baf5c84ab Fix some VC++ warnings. 
llvm-svn: 35224
 2007-03-20 20:43:18 +00:00
Lauro Ramos Venancio
971aa18867 Code clean up. 
llvm-svn: 35220
 2007-03-20 20:09:03 +00:00
Evan Cheng
550cf0369c Minor bug. 
llvm-svn: 35219
 2007-03-20 19:32:11 +00:00
Lauro Ramos Venancio
25878b45f5 CopyToReg source operand can be a physical register. 
llvm-svn: 35213
 2007-03-20 16:46:44 +00:00
Evan Cheng
a2465dfc07 Use SmallSet instead of std::set. 
llvm-svn: 35133
 2007-03-17 08:53:30 +00:00
Evan Cheng
be22235790 If sdisel has decided to sink GEP index expression into any BB. Replace all uses 
in that BB.

llvm-svn: 35132
 2007-03-17 08:22:49 +00:00
Evan Cheng
c5bc763f50 Turn on GEP index sinking by default. 
llvm-svn: 35127
 2007-03-16 18:32:30 +00:00
Evan Cheng
0a9d0cabaf Stupid bug. 
llvm-svn: 35126
 2007-03-16 17:50:20 +00:00
Evan Cheng
009ea54262 Sink a binary expression into its use blocks if it is a loop invariant 
computation used as GEP indexes and if the expression can be folded into
target addressing mode of GEP load / store use types.

llvm-svn: 35123
 2007-03-16 08:46:27 +00:00
Evan Cheng
a2a2fd1e55 Added isLegalAddressExpression hook to test if the given expression can be 
folded into target addressing mode for the given type.

llvm-svn: 35121
 2007-03-16 08:42:32 +00:00
Evan Cheng
b9e3db67fb Estimate a cost using the possible number of scratch registers required and use 
it as a late BURR scheduling tie-breaker.
Intuitively, it's good to push down instructions whose results are liveout so
their long live ranges won't conflict with other values which are needed inside
the BB. Further prioritize liveout instructions by the number of operands which
are calculated within the BB.

llvm-svn: 35109
 2007-03-14 22:43:40 +00:00
Evan Cheng
2874855302 Try schedule def + use closer whne Sethi-Ullman numbers are the same. 
e.g.
t1 = op t2, c1
t3 = op t4, c2
and the following instructions are both ready.
t2 = op c3
t4 = op c4

Then schedule t2 = op first.
i.e.
t4 = op c4
t2 = op c3
t1 = op t2, c1
t3 = op t4, c2

This creates more short live intervals which work better with the register
allocator.

llvm-svn: 35089
 2007-03-13 23:25:11 +00:00
Evan Cheng
b7004fd889 More flexible TargetLowering LSR hooks for testing whether an immediate is a legal target address immediate or scale. 
llvm-svn: 35076
 2007-03-12 23:37:10 +00:00
Chris Lattner
ce8aba03ee implement support for floating point constants used as inline asm memory operands. 
llvm-svn: 35033
 2007-03-08 22:29:47 +00:00
Chris Lattner
b7bc3f2d30 make this fail even in non-assert builds. 
llvm-svn: 35025
 2007-03-08 07:07:03 +00:00
Anton Korobeynikov
ed4b303c10 Refactoring of formal parameter flags. Enable properly use of 
zext/sext/aext stuff.

llvm-svn: 35008
 2007-03-07 16:25:09 +00:00
Evan Cheng
8a1d09d079 Avoid combining indexed load further. 
llvm-svn: 35005
 2007-03-07 08:07:03 +00:00
Chris Lattner
13780ac7db big endian 32-bit systems (e.g. ppc32) want to return the high reg first, not 
the lo-reg first.  This is fallout from my ppc calling conv change yesterday,
it fixes test/ExecutionEngine/2003-05-06-LivenessClobber.llx

llvm-svn: 34983
 2007-03-06 20:01:06 +00:00
Anton Korobeynikov
f0b9316552 Enumerate SDISel formal parameter attributes. Make use of new 
enumeration.

llvm-svn: 34960
 2007-03-06 06:10:33 +00:00
Jeff Cohen
b622c11f77 Unbreak VC++ build. 
llvm-svn: 34917
 2007-03-05 00:00:42 +00:00
Chris Lattner
47206667c0 fold away addc nodes when we know there cannot be a carry-out. 
llvm-svn: 34913
 2007-03-04 20:40:38 +00:00
Chris Lattner
2dcc6e7f58 generalize 
llvm-svn: 34910
 2007-03-04 20:08:45 +00:00
Chris Lattner
e2e13caeb2 canonicalize constants to the RHS of addc/adde. If nothing uses the carry out of 
addc, turn it into add.

This allows us to compile:

long long test(long long A, unsigned B) {
  return (A + ((long long)B << 32)) & 123;
}

into:

_test:
        movl $123, %eax
        andl 4(%esp), %eax
        xorl %edx, %edx
        ret

instead of:
_test:
        xorl %edx, %edx
        movl %edx, %eax
        addl 4(%esp), %eax   ;; add of zero
        andl $123, %eax
        ret

llvm-svn: 34909
 2007-03-04 20:03:15 +00:00
Chris Lattner
362621c7ae eliminate some ops if they have an undef RHS 
llvm-svn: 34908
 2007-03-04 20:01:46 +00:00
Chris Lattner
ca401aac31 Fix CodeGen/Generic/fpowi-promote.ll and PR1239 
llvm-svn: 34893
 2007-03-03 23:43:21 +00:00
Chris Lattner
567b9254cd Add an expand action for ISD label which just deletes the label. 
This "fixes" PR1238.

llvm-svn: 34890
 2007-03-03 19:21:38 +00:00
Jim Laskey
d5453d7b56 Lower eh filter intrinsic. 
llvm-svn: 34802
 2007-03-01 20:24:30 +00:00
Jim Laskey
644af6b68f Chain is on second operand. 
llvm-svn: 34759
 2007-02-28 20:43:58 +00:00
Jim Laskey
cf465fcebc MERGE_VALUES unnecessary. 
llvm-svn: 34750
 2007-02-28 18:37:04 +00:00
Chris Lattner
74bb92902e add methods for analysis of call results and return nodes. 
llvm-svn: 34738
 2007-02-28 07:09:40 +00:00
Chris Lattner
e74744143f add methods to analyze calls and formals. 
llvm-svn: 34736
 2007-02-28 06:56:37 +00:00
Chris Lattner
9f059194a7 Minor refactoring of CC Lowering interfaces 
llvm-svn: 34656
 2007-02-27 05:13:54 +00:00
Chris Lattner
dc3adc83e7 move CC Lowering stuff to its own public interface 
llvm-svn: 34655
 2007-02-27 04:43:02 +00:00
Chris Lattner
fce448f856 Fold (sext (truncate x)) more aggressively, by avoiding creation of a 
sextinreg if not needed.   This is useful in two cases: before legalize,
it avoids creating a sextinreg that will be trivially removed.  After legalize
if the target doesn't support sextinreg, the trunc/sext would not have been
removed before.

llvm-svn: 34621
 2007-02-26 03:13:59 +00:00
Chris Lattner
ab5d0ac02c track signedness of formal argument, though we have a fixme here. 
llvm-svn: 34620
 2007-02-26 02:56:58 +00:00
Jim Laskey
14059d958a Fix for PR1224. 
llvm-svn: 34610
 2007-02-25 21:43:59 +00:00
Chris Lattner
8c504cf9a0 optimize duplicate ValueMap lookups 
llvm-svn: 34599
 2007-02-25 18:40:32 +00:00
Chris Lattner
387f464121 fold trivial token factor nodes. This allows us to compile 
test/CodeGen/X86/fp-stack-ret.ll into:

        movl 4(%esp), %eax
        fldl (%eax)
        ret

instead of:

        subl $12, %esp
        movl 16(%esp), %eax
        movsd (%eax), %xmm0
        movsd %xmm0, (%esp)
        fldl (%esp)
        addl $12, %esp
        ret

by eliminating a token factor that blocked a check.

llvm-svn: 34584
 2007-02-25 08:24:27 +00:00
Chris Lattner
168c5856bf initialize a instance variable 
llvm-svn: 34567
 2007-02-25 01:28:05 +00:00