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633cd3e84d
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4402 Commits

Author SHA1 Message Date
Evan Cheng
633cd3e84d - Bug fixes. 
- Allow icmp rewrite using an iv / stride of a smaller integer type.

llvm-svn: 43480
 2007-10-29 22:07:18 +00:00
Dan Gohman
02b8beff5f Fix a DAGCombiner abort on a bitcast from a scalar to a vector. 
llvm-svn: 43470
 2007-10-29 20:44:42 +00:00
Evan Cheng
5fe81cf64e Enable more fold (sext (load x)) -> (sext (truncate (sextload x))) 
transformation. Previously, it's restricted by ensuring the number of load uses
is one. Now the restriction is loosened up by allowing setcc uses to be
"extended" (e.g. setcc x, c, eq -> setcc sext(x), sext(c), eq).

llvm-svn: 43465
 2007-10-29 19:58:20 +00:00
Chris Lattner
875ca50576 update testcase 
llvm-svn: 43452
 2007-10-29 17:06:35 +00:00
Chris Lattner
3d6151bcd1 Model stacksave and stackrestore as both writing memory, since we 
don't model their dependences on allocas correctly.  This fixes
PR1745.

llvm-svn: 43442
 2007-10-29 05:47:52 +00:00
Chris Lattner
1503362624 Add support for the x86-64 'q' regigster modifier, and add support for the 
b/h/w/k/q inline asm memory modifiers, which are just ignored.  This fixes
PR1748 and CodeGen/X86/2007-10-28-inlineasm-q-modifier.ll

llvm-svn: 43430
 2007-10-29 03:09:07 +00:00
Chris Lattner
7e3a8a7604 Fix PR1749 and InstCombine/2007-10-28-EmptyField.ll by handling 
zero-length fields better.

llvm-svn: 43427
 2007-10-29 02:40:02 +00:00
Chris Lattner
891066cfff Fix PR1752 and LoopSimplify/2007-10-28-InvokeCrash.ll: terminators 
can have uses too.  Wouldn't it be nice if invoke didn't exist? :)

llvm-svn: 43426
 2007-10-29 02:30:37 +00:00
Bill Wendling
0d90333ff2 Test to make sure that if we have an unaligned memcpy, it will still compile. 
llvm-svn: 43412
 2007-10-26 23:43:35 +00:00
Bill Wendling
18b6321020 On second thought. Remove this as it should never be generated in the first 
place.

llvm-svn: 43400
 2007-10-26 20:34:37 +00:00
Bill Wendling
8d329ff809 - Remove the hacky code that forces a memcpy. Alignment is taken care of in the 
FE.
- Explicitly pass in the alignment of the load & store.
- XFAIL 2007-10-23-UnalignedMemcpy.ll because llc has a bug that crashes on
  unaligned pointers.

llvm-svn: 43398
 2007-10-26 20:24:42 +00:00
Evan Cheng
53696b7e9f Loosen up iv reuse to allow reuse of the same stride but a larger type when truncating from the larger type to smaller type is free. 
e.g.
Turns this loop:
LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
        movw    %dx, %si
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %edi
        movw    %si, (%edi)
        movl    L_Y$non_lazy_ptr, %edi
        movw    %dx, (%edi)
		addw    $4, %dx
		incw    %si
		incl    %ecx
		cmpl    %eax, %ecx
		jne     LBB1_2  # bb
	
into

LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %esi
        movw    %cx, (%esi)
        movl    L_Y$non_lazy_ptr, %esi
        movw    %dx, (%esi)
        addw    $4, %dx
		incl    %ecx
        cmpl    %eax, %ecx
        jne     LBB1_2  # bb

llvm-svn: 43375
 2007-10-26 01:56:11 +00:00
Evan Cheng
66cbf54030 If a loop termination compare instruction is the only use of its stride, 
and the compaison is against a constant value, try eliminate the stride
by moving the compare instruction to another stride and change its
constant operand accordingly. e.g.

loop:
...
v1 = v1 + 3
v2 = v2 + 1
if (v2 < 10) goto loop
=>
loop:
...
v1 = v1 + 3
if (v1 < 30) goto loop

llvm-svn: 43336
 2007-10-25 09:11:16 +00:00
Owen Anderson
6cc4e90741 Fix for PR1741. 
llvm-svn: 43326
 2007-10-25 02:36:18 +00:00
Dale Johannesen
0d3f583c8b Testcase for PR 1397. 
llvm-svn: 43323
 2007-10-25 00:50:14 +00:00
Dale Johannesen
402c11966a This was failing on Darwin, which defaults to PIC; 
no lea was generated.  I think this follows the intent.

llvm-svn: 43312
 2007-10-24 20:58:14 +00:00
Chris Lattner
483c471daa Implement a couple of foldings for ordered and unordered comparisons, 
implementing cases related to PR1738.

llvm-svn: 43289
 2007-10-24 05:38:08 +00:00
Bill Wendling
a420d660c8 If there's an unaligned memcpy to/from the stack, don't lower it. Just call the 
memcpy library function instead.

llvm-svn: 43270
 2007-10-23 23:32:40 +00:00
Chris Lattner
2cf65be2c4 new testcase 
llvm-svn: 43252
 2007-10-23 18:07:23 +00:00
Chris Lattner
b029483115 llvm/test programs should not be execution programs. This 
will hopefully fix Gabor's Sparc problem.

llvm-svn: 43251
 2007-10-23 17:56:04 +00:00
Evan Cheng
0590c75f18 Temporary solution: added a different set of BCTRL_Macho / BCTRL_ELF with right callee-saved defs set for ppc64. 
llvm-svn: 43248
 2007-10-23 06:42:42 +00:00
Evan Cheng
252d9ddb4d Fix memcpy lowering when addresses are 4-byte aligned but size is not multiple of 4. 
llvm-svn: 43234
 2007-10-22 22:11:27 +00:00
Dan Gohman
df1f166e4a Strength reduction improvements. 
- Avoid attempting stride-reuse in the case that there are users that
   aren't addresses. In that case, there will be places where the
   multiplications won't be folded away, so it's better to try to
   strength-reduce them.

 - Several SSE intrinsics have operands that strength-reduction can
   treat as addresses. The previous item makes this more visible, as
   any non-address use of an IV can inhibit stride-reuse.

 - Make ValidStride aware of whether there's likely to be a base
   register in the address computation. This prevents it from thinking
   that things like stride 9 are valid on x86 when the base register is
   already occupied.

Also, XFAIL the 2007-08-10-LEA16Use32.ll test; the new logic to avoid
stride-reuse elimintes the LEA in the loop, so the test is no longer
testing what it was intended to test.

llvm-svn: 43231
 2007-10-22 20:40:42 +00:00
Dan Gohman
76e104c8ad Fix the folding of multiplication into addresses on x86, which was broken 
by the recent {U,S}MUL_LOHI changes.

llvm-svn: 43230
 2007-10-22 20:22:24 +00:00
Evan Cheng
85eb733eff Use ptr type in the immediate field of a BxA instruction so we don't end up selecting 32-bit call instruction for ppc64. 
llvm-svn: 43228
 2007-10-22 19:46:19 +00:00
Evan Cheng
2d53c3f15e New test case. 
llvm-svn: 43193
 2007-10-19 22:05:00 +00:00
Bill Wendling
df262eb966 Don't branch fold inline asm statements. 
llvm-svn: 43191
 2007-10-19 21:09:55 +00:00
Bill Wendling
8dde52e2cd Removed "-arch i386" by popular demand... 
llvm-svn: 43186
 2007-10-19 18:49:16 +00:00
Bill Wendling
868ad0d3b5 Now with RUN line! 
llvm-svn: 43185
 2007-10-19 18:40:53 +00:00
Bill Wendling
c3a94c317d Remove the Foundation.h file because not everyone has that. 
llvm-svn: 43184
 2007-10-19 18:36:04 +00:00
Devang Patel
d002595abf This test now passes. 
llvm-svn: 43183
 2007-10-19 17:11:01 +00:00
Rafael Espindola
2b5b200b9f Test byval with a 8 bit aligned struct 
llvm-svn: 43173
 2007-10-19 11:29:21 +00:00
Rafael Espindola
d8d4372845 Add support for byval function whose argument is not 32 bit aligned. 
To do this it is necessary to add a "always inline" argument to the
memcpy node. For completeness I have also added this node to memmove
and memset.  I have also added getMem* functions, because the extra
argument makes it cumbersome to use getNode and because I get confused
by it :-)

llvm-svn: 43172
 2007-10-19 10:41:11 +00:00
Devang Patel
9b11c8ab03 New test. 
llvm-svn: 43162
 2007-10-19 01:28:02 +00:00
Chris Lattner
efaf4ba65d Fix PR1735 and Transforms/DeadArgElim/2007-10-18-VarargsReturn.ll by 
fixing some obviously broken code :(

llvm-svn: 43141
 2007-10-18 18:49:29 +00:00
Bill Wendling
23c2fcfaab Fix the command line. 
llvm-svn: 43140
 2007-10-18 18:26:40 +00:00
Devang Patel
80e28fa633 Fix test. 
llvm-svn: 43136
 2007-10-18 17:54:49 +00:00
Bill Wendling
32c9cd9e94 Pointer arithmetic should be done with the index the same size as the pointer. 
llvm-svn: 43120
 2007-10-18 08:32:37 +00:00
Evan Cheng
f6d1c7be14 Really fix PR1734. Carefully track which register uses are sub-register uses by 
traversing inverse register coalescing map.

llvm-svn: 43118
 2007-10-18 07:49:59 +00:00
Devang Patel
13e0df71e0 XFAIL for now. 
llvm-svn: 43111
 2007-10-18 00:48:43 +00:00
Bill Wendling
0a8dfb51cd Test to make sure we don't generate unwind info for non-64-bit Objective-C. 
llvm-svn: 43102
 2007-10-17 23:14:56 +00:00
Devang Patel
9cb3c09156 Do not raise free() call that is called through invoke instruction. 
llvm-svn: 43083
 2007-10-17 20:12:58 +00:00
Dan Gohman
2903f7fc26 Add support for ISD::SELECT in SplitVectorOp. 
llvm-svn: 43072
 2007-10-17 14:48:28 +00:00
Devang Patel
cf2f9d6daa Apply "Instead of loading small c string constant, use integer constant directly" transformation while processing load instruction. 
llvm-svn: 43070
 2007-10-17 07:24:40 +00:00
Evan Cheng
524c0e6c3d Yet another test case for extract_subreg coalescing crash. 
llvm-svn: 43063
 2007-10-17 02:15:06 +00:00
Evan Cheng
09fa6ed483 Fix PR1734. 
llvm-svn: 43035
 2007-10-16 19:29:47 +00:00
Dale Johannesen
dd254c4efa New test for svn rev 43033, radar 5538745. 
llvm-svn: 43034
 2007-10-16 18:10:14 +00:00
Chris Lattner
45d9c7aa07 Fix a bug handling frame references in ppc inline asm when the frame offset 
doesn't fit into 16 bits.

llvm-svn: 43032
 2007-10-16 18:00:18 +00:00
Evan Cheng
f5bcd3d737 LowerFP_TO_SINT must not create a stack object if it's not needed. 
llvm-svn: 43004
 2007-10-15 20:11:21 +00:00
Dan Gohman
2dc6099def Reapply the fix in 42908 for this file. This changes the function names 
from "test" to "foo" so that they don't match the grep -i ST.

llvm-svn: 43001
 2007-10-15 19:22:17 +00:00