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Author SHA1 Message Date
Chris Lattner
927a143285 minimal hack to get patterns whose result type is iPTR to be selected. 
llvm-svn: 31742
 2006-11-14 21:50:27 +00:00
Devang Patel
4f5849544b Copy initializeAnalysisImpl() implementation from PassManagerT. 
Update LastUser to recursively walk required transitive set.

llvm-svn: 31741
 2006-11-14 21:49:36 +00:00
Chris Lattner
1cbfe99b60 remove some dead code 
llvm-svn: 31740
 2006-11-14 21:41:35 +00:00
Chris Lattner
7e5cbf9ee0 Add support for nodes that return iPTR. 
llvm-svn: 31739
 2006-11-14 21:32:01 +00:00
Chris Lattner
03cc8c84ef changes to get ptr_rc to be accepted in patterns. This is needed for ppc preinc 
stores.

llvm-svn: 31738
 2006-11-14 21:18:40 +00:00
Evan Cheng
7c9b3c7ea3 Revert. This wasn't meant to be checked in. 
llvm-svn: 31737
 2006-11-14 19:20:33 +00:00
Chris Lattner
55c68f61a7 group load and store instructions together. No functionality change. 
llvm-svn: 31736
 2006-11-14 19:19:53 +00:00
Chris Lattner
6c55120e31 Fix predicates for unindexed stores so they don't accidentally match indexed 
stores.

llvm-svn: 31735
 2006-11-14 19:13:39 +00:00
Chris Lattner
dc48b6a77c Rework PPC64 calls. Now we have a LR8/CTR8 register which the PPC64 calls 
clobber.  This allows LR8 to be save/restored correctly as a 64-bit quantity,
instead of handling it as a 32-bit quantity.  This unbreaks ppc64 codegen when
the code is actually located above the 4G boundary.

llvm-svn: 31734
 2006-11-14 18:44:47 +00:00
Chris Lattner
10b528d5c3 remove a ton of custom selection logic no longer needed 
llvm-svn: 31733
 2006-11-14 18:43:11 +00:00
Chris Lattner
796d72272b Fix a bug handling nodes with variable arguments. The code was fixed to assume 
that there were two input operands before the variable operand portion.  This
*happened* to be true for all call instructions, which took a chain and a
destination, but was not true for the PPC BCTRL instruction, whose destination
is implicit.

Making this code more general allows elimination of the custom selection logic
for BCTRL.

llvm-svn: 31732
 2006-11-14 18:41:38 +00:00
Chris Lattner
da103686a6 it would be nice of ctlz were lowered to bsf etc. 
llvm-svn: 31730
 2006-11-14 08:08:46 +00:00
Chris Lattner
0114b0c20e implement InstCombine/shift-simplify.ll by transforming: 
(X >> Z) op (Y >> Z)  -> (X op Y) >> Z

for all shifts and all ops={and/or/xor}.

llvm-svn: 31729
 2006-11-14 07:46:50 +00:00
Chris Lattner
e9245afa13 new testcase 
llvm-svn: 31728
 2006-11-14 07:45:36 +00:00
Chris Lattner
616335f272 implement InstCombine/and-compare.ll:test1. This compiles: 
typedef struct { unsigned prefix : 4; unsigned code : 4; unsigned unsigned_p : 4; } tree_common;
int foo(tree_common *a, tree_common *b) { return a->code == b->code; }

into:

_foo:
        movl 4(%esp), %eax
        movl 8(%esp), %ecx
        movl (%eax), %eax
        xorl (%ecx), %eax
        # TRUNCATE movb %al, %al
        shrb $4, %al
        testb %al, %al
        sete %al
        movzbl %al, %eax
        ret

instead of:

_foo:
        movl 8(%esp), %eax
        movb (%eax), %al
        shrb $4, %al
        movl 4(%esp), %ecx
        movb (%ecx), %cl
        shrb $4, %cl
        cmpb %al, %cl
        sete %al
        movzbl %al, %eax
        ret

saving one cycle by eliminating a shift.

llvm-svn: 31727
 2006-11-14 06:06:06 +00:00
Chris Lattner
9cda3e7e77 new testcase 
llvm-svn: 31726
 2006-11-14 06:04:35 +00:00
Chris Lattner
e3a81b796c lower "X = seteq Y, Z" to '(shr (ctlz (xor Y, Z)), 5)' instead of 
'(shr (ctlz (sub Y, Z)), 5)'.

The use of xor better exposes the operation to bit-twiddling logic in the
dag combiner.  For example, this:

typedef struct {
  unsigned prefix : 4;
  unsigned code : 4;
  unsigned unsigned_p : 4;
} tree_common;

int foo(tree_common *a, tree_common *b) {
  return a->code == b->code;
}

Now compiles to:

_foo:
        lwz r2, 0(r4)
        lwz r3, 0(r3)
        xor r2, r3, r2
        rlwinm r2, r2, 28, 28, 31
        cntlzw r2, r2
        srwi r3, r2, 5
        blr

instead of:

_foo:
        lbz r2, 3(r4)
        lbz r3, 3(r3)
        srwi r2, r2, 4
        srwi r3, r3, 4
        subf r2, r2, r3
        cntlzw r2, r2
        srwi r3, r2, 5
        blr

saving a cycle.

llvm-svn: 31725
 2006-11-14 05:28:08 +00:00
Andrew Lenharth
6bf99e12a8 A shim over other AA impls to catch incorrect uses 
llvm-svn: 31724
 2006-11-14 05:21:04 +00:00
Reid Spencer
f65a8539ec Discard code that supported old bytecode formats. This makes the Bytecode 
Reader code much easier to read and maintain. Backwards compatibility from
version 5 format has been retained. Older formats will produce an error.

llvm-svn: 31723
 2006-11-14 04:47:22 +00:00
Devang Patel
bb3da3a9a1 Implement removeDeadPasses(). 
llvm-svn: 31722
 2006-11-14 03:05:08 +00:00
Devang Patel
816f60d7e9 Keep track of Last user of analysis phase. 
llvm-svn: 31721
 2006-11-14 02:54:23 +00:00
Devang Patel
2b9bd4aa34 Use std::map to map AnalysisID and Pass. 
llvm-svn: 31720
 2006-11-14 01:59:59 +00:00
Chris Lattner
8913d79def add a note 
llvm-svn: 31719
 2006-11-14 01:57:53 +00:00
Chris Lattner
fdffc51d57 minor tweaks, reject vector preinc. 
llvm-svn: 31717
 2006-11-14 01:38:31 +00:00
Devang Patel
bcc72c8a5a Manage analysis passes during run. 
llvm-svn: 31716
 2006-11-14 01:23:29 +00:00
Tanya Lattner
ce1ab293d2 Updating configure script for 2.0 
llvm-svn: 31715
 2006-11-14 00:59:52 +00:00
Devang Patel
fa6da87694 Update comments. 
llvm-svn: 31713
 2006-11-14 00:03:04 +00:00
Evan Cheng
0e82270ff2 Matches MachineInstr changes. 
llvm-svn: 31712
 2006-11-13 23:36:35 +00:00
Evan Cheng
7cabf9d02c - Let MachineInstr ctors add implicit def and use operands. Other operands 
will be inserted before these operands. If the opcode changes (by
  setOpcode), the implicit operands are updated as well.
- Added IsKill, IsDead fields to MachineOperand in preparation for changes
  that move kill / dead info to MachineInstr's.

llvm-svn: 31711
 2006-11-13 23:34:06 +00:00
Devang Patel
5297c37d63 Update PassManagerImpl_New::analysisCurrentlyAvailable to check all 
managed passmanagers.

llvm-svn: 31710
 2006-11-13 22:53:19 +00:00
Devang Patel
84dd1c2764 Check currently available anlysis in active managers. 
llvm-svn: 31709
 2006-11-13 22:40:09 +00:00
Chris Lattner
81ea2c7c0a teach the g5 hazard recognizer about update loads. This fixes 
Ptrdist/anagram among others.

llvm-svn: 31708
 2006-11-13 20:11:06 +00:00
Reid Spencer
5ccab2352a For PR950: 
Changes for new cast instructions that are backwards compatible.

llvm-svn: 31707
 2006-11-13 18:00:52 +00:00
Reid Spencer
e8d8bdd51b Don't hard code test names into the test. 
llvm-svn: 31706
 2006-11-13 17:55:34 +00:00
Reid Spencer
d518f8cada Fix 80 cols violations. 
llvm-svn: 31705
 2006-11-13 16:21:09 +00:00
Reid Spencer
9809efcd2b For PR950: 
Use the notcast script in preparation for 12 casts.

llvm-svn: 31704
 2006-11-13 16:13:38 +00:00
Reid Spencer
2c351d43b9 For PR950: 
Use the notcast script in preparation for 12 cast instructions.

llvm-svn: 31703
 2006-11-13 16:12:25 +00:00
Reid Spencer
3d513e3571 Make it handle plain old cast too, for old assembly. 
llvm-svn: 31702
 2006-11-13 16:11:14 +00:00
Reid Spencer
51883d326d Handle ptrtoint and inttoptr 
llvm-svn: 31701
 2006-11-13 16:09:37 +00:00
Reid Spencer
c7d7e1ed9c Add some output so the user is informed while they wait. 
llvm-svn: 31700
 2006-11-13 16:08:51 +00:00
Reid Spencer
b154b9b289 Add a link to the GEP FAQ. 
llvm-svn: 31698
 2006-11-13 08:03:59 +00:00
Chris Lattner
d23cc47b59 remove redundant code 
llvm-svn: 31697
 2006-11-13 01:10:12 +00:00
Nick Lewycky
f4f28f415d Cute example from Chris Lattner. 
llvm-svn: 31696
 2006-11-13 00:23:28 +00:00
Bill Wendling
839551a7c1 Initialize some pointers to quiet the compiler (when doing build_gcc 
builds).

llvm-svn: 31694
 2006-11-12 11:10:39 +00:00
Reid Spencer
2aaa443bc0 Document new constant expr operators, rename bitconvert as bitcast. 
llvm-svn: 31693
 2006-11-11 23:08:07 +00:00
Reid Spencer
90ded85f8f Revert premature patch. 
llvm-svn: 31692
 2006-11-11 23:06:47 +00:00
Reid Spencer
e43e97e798 Document new constant expr operators, rename bitconvert as bitcast. 
llvm-svn: 31691
 2006-11-11 22:34:59 +00:00
Jim Laskey
d692c1a0ab Make sure stack link is set in 64-bit. 
llvm-svn: 31690
 2006-11-11 22:22:07 +00:00
Jim Laskey
d4e953e046 XFAIL All but powerpc 
llvm-svn: 31689
 2006-11-11 22:14:46 +00:00
Reid Spencer
71ccba2570 Add a preview of two new conversion operators: ptrtoint and inttoptr. Update 
the defintion of bitconvert correspondingly.

llvm-svn: 31688
 2006-11-11 21:00:47 +00:00