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27836 Commits

Author SHA1 Message Date
Chris Lattner 44dbdbe5cf 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 b542925b22 remove a ton of custom selection logic no longer needed 
llvm-svn: 31733
 2006-11-14 18:43:11 +00:00
Chris Lattner f8c06b335d 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 4916acbd0f it would be nice of ctlz were lowered to bsf etc. 
llvm-svn: 31730
 2006-11-14 08:08:46 +00:00
Chris Lattner f05d69ae72 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 c348c50c38 new testcase 
llvm-svn: 31728
 2006-11-14 07:45:36 +00:00
Chris Lattner d12a4bf799 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 9adf8294ef new testcase 
llvm-svn: 31726
 2006-11-14 06:04:35 +00:00
Chris Lattner 97ff46b3cc 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 0ad1e3845b A shim over other AA impls to catch incorrect uses 
llvm-svn: 31724
 2006-11-14 05:21:04 +00:00
Reid Spencer 1b89a7bcc1 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 ca1892699c Implement removeDeadPasses(). 
llvm-svn: 31722
 2006-11-14 03:05:08 +00:00
Devang Patel 3f0832a3b5 Keep track of Last user of analysis phase. 
llvm-svn: 31721
 2006-11-14 02:54:23 +00:00
Devang Patel f60b5d9676 Use std::map to map AnalysisID and Pass. 
llvm-svn: 31720
 2006-11-14 01:59:59 +00:00
Chris Lattner 6dc22332bf add a note 
llvm-svn: 31719
 2006-11-14 01:57:53 +00:00
Chris Lattner 683712583a minor tweaks, reject vector preinc. 
llvm-svn: 31717
 2006-11-14 01:38:31 +00:00
Devang Patel 050ec72ae4 Manage analysis passes during run. 
llvm-svn: 31716
 2006-11-14 01:23:29 +00:00
Tanya Lattner 9ce0379da2 Updating configure script for 2.0 
llvm-svn: 31715
 2006-11-14 00:59:52 +00:00
Devang Patel dafa4ddc46 Update comments. 
llvm-svn: 31713
 2006-11-14 00:03:04 +00:00
Evan Cheng dbd3d294e6 Matches MachineInstr changes. 
llvm-svn: 31712
 2006-11-13 23:36:35 +00:00
Evan Cheng 77af6ac5e8 - 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 7086844634 Update PassManagerImpl_New::analysisCurrentlyAvailable to check all 
managed passmanagers.

llvm-svn: 31710
 2006-11-13 22:53:19 +00:00
Devang Patel ebba970a6d Check currently available anlysis in active managers. 
llvm-svn: 31709
 2006-11-13 22:40:09 +00:00
Chris Lattner 1121e50f7e 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 3d1027193f For PR950: 
Changes for new cast instructions that are backwards compatible.

llvm-svn: 31707
 2006-11-13 18:00:52 +00:00
Reid Spencer 7354395590 Don't hard code test names into the test. 
llvm-svn: 31706
 2006-11-13 17:55:34 +00:00
Reid Spencer 83c7a1e710 Fix 80 cols violations. 
llvm-svn: 31705
 2006-11-13 16:21:09 +00:00
Reid Spencer 5953e4e805 For PR950: 
Use the notcast script in preparation for 12 casts.

llvm-svn: 31704
 2006-11-13 16:13:38 +00:00
Reid Spencer 6170dff047 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 7debe5e948 Make it handle plain old cast too, for old assembly. 
llvm-svn: 31702
 2006-11-13 16:11:14 +00:00
Reid Spencer 6f406f91d2 Handle ptrtoint and inttoptr 
llvm-svn: 31701
 2006-11-13 16:09:37 +00:00
Reid Spencer cac60e8eb4 Add some output so the user is informed while they wait. 
llvm-svn: 31700
 2006-11-13 16:08:51 +00:00
Reid Spencer e473e41e59 Add a link to the GEP FAQ. 
llvm-svn: 31698
 2006-11-13 08:03:59 +00:00
Chris Lattner 5c833df633 remove redundant code 
llvm-svn: 31697
 2006-11-13 01:10:12 +00:00
Nick Lewycky 0df2ada9d4 Cute example from Chris Lattner. 
llvm-svn: 31696
 2006-11-13 00:23:28 +00:00
Bill Wendling ad75361d42 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 5b9506439a Document new constant expr operators, rename bitconvert as bitcast. 
llvm-svn: 31693
 2006-11-11 23:08:07 +00:00
Reid Spencer b608daeec3 Revert premature patch. 
llvm-svn: 31692
 2006-11-11 23:06:47 +00:00
Reid Spencer 8b8913ba61 Document new constant expr operators, rename bitconvert as bitcast. 
llvm-svn: 31691
 2006-11-11 22:34:59 +00:00
Jim Laskey 1dfc6110ff Make sure stack link is set in 64-bit. 
llvm-svn: 31690
 2006-11-11 22:22:07 +00:00
Jim Laskey a3262ee8ec XFAIL All but powerpc 
llvm-svn: 31689
 2006-11-11 22:14:46 +00:00
Reid Spencer b7344ff025 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
Reid Spencer 06d8e0fa3b Remvoe a do-nothing else block. 
llvm-svn: 31687
 2006-11-11 20:27:49 +00:00
Reid Spencer 2230144a75 Make an assert comment match the tested assertion. 
llvm-svn: 31686
 2006-11-11 20:07:59 +00:00
Reid Spencer 3005d47797 Minor style fixes from review. 
llvm-svn: 31685
 2006-11-11 19:59:25 +00:00
Chris Lattner 0d550cc56c implement proper PPC64 prolog/epilog codegen. 
llvm-svn: 31684
 2006-11-11 19:05:28 +00:00
Reid Spencer 471bcb750e Add a -disable-loop-extraction option to bugpoint. 
llvm-svn: 31683
 2006-11-11 19:05:02 +00:00
Reid Spencer 75db664f44 For PR998: 
Fix an infinite loop in the Linker and a few other assorted link problems.

Patch contributed by Scott Michel. Thanks, Scott!

llvm-svn: 31680
 2006-11-11 11:54:25 +00:00
Jim Laskey ebdf6f46eb Works for PowerPC with frame pointers. 
llvm-svn: 31679
 2006-11-11 10:22:56 +00:00
Reid Spencer 2e80be8251 Add -lstdc++ to the link line for C++ programs. 
llvm-svn: 31678
 2006-11-11 10:22:48 +00:00