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Author SHA1 Message Date
Reid Spencer
8c5c7c8453 Change casts from old style to new style. This helps document the details 
better, gives the compiler a chance to validate the cast and reduces warnings
if the user turns on -Wold-style-cast option.

llvm-svn: 41033
 2007-08-12 08:12:35 +00:00
Devang Patel
63d1affed8 Split loops and do CFG cleanup. 
llvm-svn: 41029
 2007-08-12 07:02:51 +00:00
Reid Spencer
c71871ba30 Remove unused variables. 
llvm-svn: 41028
 2007-08-12 04:45:36 +00:00
Evan Cheng
3b211635e8 No need to remove dead range from soon-to-be-dead live interval. Its val# may be out of whack. 
llvm-svn: 41024
 2007-08-12 01:26:19 +00:00
Chris Lattner
afb3c33c2a constant fold ptrtoint(inttoptr) with target data when available. This allows 
us to fold the entry block of PR1602 to false instead of:

br i1 icmp eq (i32 and (i32 ptrtoint (void (%struct.S*)* inttoptr (i64
1 to void (%struct.S*)*) to i32), i32 1), i32 0), label %cond_next, label
%cond_true

llvm-svn: 41023
 2007-08-11 23:49:01 +00:00
Chris Lattner
50f25115cd Transform a load from an undef/zero global into an undef/global even if we 
have complex pointer manipulation going on.  This allows us to compile
stuff like this:

__m128i foo(__m128i x){
                static const unsigned int c_0[4] = { 0, 0, 0, 0 };
                __m128i v_Zero = _mm_loadu_si128((__m128i*)c_0);
                x  = _mm_unpacklo_epi8(x,  v_Zero);
                return x;
}

into:

_foo:
        xorps   %xmm1, %xmm1
        punpcklbw       %xmm1, %xmm0
        ret

llvm-svn: 41022
 2007-08-11 18:48:48 +00:00
Chris Lattner
fedbfd5f47 expand a note 
llvm-svn: 41021
 2007-08-11 18:19:07 +00:00
Chris Lattner
5f098dbbe5 With evan's explicit flag representation, hopefully we will finally be 
able to 3-addressify away stuff like this:

        movl    %ecx, %eax
        decl    %eax

llvm-svn: 41020
 2007-08-11 18:16:46 +00:00
Reid Spencer
07c9c99f36 Now that llvm-ld can accept - as input from stdin, use this feature to extract 
the pass arguments that it supports.

llvm-svn: 41019
 2007-08-11 16:11:22 +00:00
Reid Spencer
da7379cc57 Fix a comment typo noticed by Sandro Magi. 
llvm-svn: 41018
 2007-08-11 15:57:56 +00:00
Bill Wendling
e611c96a3c 64-bit SSSE3 ops that use MMX registers don't require 16-byte alignment. 
Make a 'memop' pattern just for them.

llvm-svn: 41017
 2007-08-11 09:52:53 +00:00
Evan Cheng
8968affb6d Code to maintain kill information during register coalescing. 
llvm-svn: 41016
 2007-08-11 00:59:19 +00:00
Christopher Lamb
7e52a97df5 Use subregs to improve any_extend code generation when feasible. 
llvm-svn: 41013
 2007-08-10 22:22:41 +00:00
Christopher Lamb
6c79abee5d Fix test so it passes. 
llvm-svn: 41012
 2007-08-10 22:20:57 +00:00
Christopher Lamb
450f6815b9 Increase efficiency of sign_extend_inreg by using subregisters for truncation. As the README suggests sign_extend_subreg is selected to (sext(trunc)). 
llvm-svn: 41010
 2007-08-10 21:48:46 +00:00
Christopher Lamb
4e6cae3eae Edit README in light of previous LEA16 commit. 
llvm-svn: 41009
 2007-08-10 21:29:05 +00:00
Christopher Lamb
7196f0d724 Add 2-addr to 3-addr promotion code that allows 32-bit LEA to be used via subregisters when 16-bit LEA is disabled. 
llvm-svn: 41007
 2007-08-10 21:18:25 +00:00
Christopher Lamb
e0c9bd8d2e Move isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs and add more debugging output there. 
llvm-svn: 41005
 2007-08-10 21:11:55 +00:00
Devang Patel
fa7277dd34 Do not overuse std::string. Pass around char * directly. 
llvm-svn: 41001
 2007-08-10 18:29:32 +00:00
Devang Patel
c8cff19c2e Clone loop. 
llvm-svn: 40998
 2007-08-10 18:07:13 +00:00
Devang Patel
d412a2a0ed Add utility to clone loops. 
llvm-svn: 40997
 2007-08-10 17:59:47 +00:00
Devang Patel
80f51489aa Add #ifndef guard. 
llvm-svn: 40991
 2007-08-10 15:58:23 +00:00
Chris Lattner
15b13dc5f9 add #ifndef guards 
llvm-svn: 40990
 2007-08-10 15:53:08 +00:00
Chris Lattner
de900e3b6c add Value::getNameStart/getNameLen() accessors. 
llvm-svn: 40989
 2007-08-10 15:34:35 +00:00
Dan Gohman
232e8feb40 Add a test script for counting lines. This can be used instead of the 
"| grep foo | wc -l | grep 2" idiom used by many tests, so that, for
example, tests don't mistakenly accept a count of 12 when 2 is
expected. Also, the new form is more consice: "| grep foo | count 2".

llvm-svn: 40988
 2007-08-10 15:07:05 +00:00
Dan Gohman
f18e94535f Fix EXTRACT_ELEMENT, EXTRACT_SUBVECTOR, and EXTRACT_VECTOR_ELT to 
use an intptr ValueType instead of i32 for the index operand in
getCopyToParts.

llvm-svn: 40987
 2007-08-10 14:59:38 +00:00
Rafael Espindola
b20b9e985a propagate struct size and alignment of byval arguments to the DAG 
llvm-svn: 40986
 2007-08-10 14:44:42 +00:00
Bill Wendling
d0bee665d3 For kicks, I though it would be fun to use the correct opcode. 
llvm-svn: 40985
 2007-08-10 09:00:17 +00:00
Chris Lattner
f570f023cf memcpy with zero length is hugely expensive, so avoid it. This speeds up coallescing from 1.17s to 0.88s on siod. 
llvm-svn: 40984
 2007-08-10 07:02:50 +00:00
Chris Lattner
8995eae095 small speedup in the case where a smallvector is default ctor'd from 
an empty vector.  This speeds up llc slightly.

llvm-svn: 40983
 2007-08-10 06:54:38 +00:00
Bill Wendling
55c3dc2409 Adding SSSE3 intrinsics. 
llvm-svn: 40982
 2007-08-10 06:22:27 +00:00
Chris Lattner
de5f6f921a minor simplifications. 
llvm-svn: 40981
 2007-08-10 06:22:25 +00:00
Chris Lattner
bbe3b1dbee avoid copying strings. 
llvm-svn: 40980
 2007-08-10 06:17:04 +00:00
Devang Patel
b1160475fd Remove unncessary duplication. 
llvm-svn: 40979
 2007-08-10 00:59:03 +00:00
Devang Patel
23c5e2dcd3 Calculate exit and start value of true loop and false loop respectively. 
llvm-svn: 40978
 2007-08-10 00:53:35 +00:00
Devang Patel
51da0a465a ExitCondition and Induction variable are loop constraints 
not split condition constraints.

llvm-svn: 40977
 2007-08-10 00:33:50 +00:00
Chris Lattner
202e7f84e9 unbreak the build 
llvm-svn: 40976
 2007-08-09 23:55:17 +00:00
Evan Cheng
0293fe7483 Bug fix. ~1U marks the val# dead. 
llvm-svn: 40975
 2007-08-09 23:14:39 +00:00
Dale Johannesen
21c0eac378 Patch 10 for long double. Doing constants right needs expanding ConstantFP 
to handle values bigger than double.  If we assume host==target and host
long double works correctly, this is not too bad, but we don't want to
have that limitation longterm.  I could implement accepting double
constants as long double or something like that, which would lead to
incorrect codegen with no errors; the more I think about that the worse
it seems.  Rather than do such a hack that would be backed out later,
I'm settling for giving reasonable error messages, for now.

llvm-svn: 40974
 2007-08-09 22:51:36 +00:00
Evan Cheng
3fae8e1c4a Temporarily backing out this change until we know why some dejagnu tests are failing. 
llvm-svn: 40973
 2007-08-09 22:25:35 +00:00
Evan Cheng
a58ebc46dd divb / mulb outputs to ah. Under x86-64 it's not legal to read ah if the instruction requires a rex prefix (i.e. outputs to r8b, etc.). So issue shift right by 8 on AX and then truncate it to 8 bits instead. 
llvm-svn: 40972
 2007-08-09 21:59:35 +00:00
Chris Lattner
3548932573 when we see a unaligned load from an insufficiently aligned global or 
alloca, increase the alignment of the load, turning it into an aligned load.

This allows us to compile:

#include <xmmintrin.h>
__m128i foo(__m128i x){
 static const unsigned int c_0[4] = { 0, 0, 0, 0 };
	  __m128i v_Zero = _mm_loadu_si128((__m128i*)c_0);
  x  = _mm_unpacklo_epi8(x,  v_Zero);
  return x;
}

into:

_foo:
	punpcklbw	_c_0.5944, %xmm0
	ret
	.data
	.lcomm	_c_0.5944,16,4		# c_0.5944

instead of:

_foo:
	movdqu	_c_0.5944, %xmm1
	punpcklbw	%xmm1, %xmm0
	ret
	.data
	.lcomm	_c_0.5944,16,2		# c_0.5944

llvm-svn: 40971
 2007-08-09 19:05:49 +00:00
Evan Cheng
a822456bed GR16_ sub-register class should be GR8_, not GR8. That is, it should only be 8-bit registers in 32-bit mode. Ditto for GR32_. 
llvm-svn: 40970
 2007-08-09 18:05:17 +00:00
Dale Johannesen
a1340d5916 Update per review comments. 
llvm-svn: 40965
 2007-08-09 17:27:48 +00:00
Owen Anderson
3eba1e8f5c Make NonLocal and None const in the right way. :-) 
llvm-svn: 40961
 2007-08-09 04:42:44 +00:00
Devang Patel
652613b1db Traverse loop blocks' terminators to find split candidates. 
llvm-svn: 40960
 2007-08-09 01:39:01 +00:00
Dale Johannesen
79551baaad long double 9 of N. This finishes up the X86-32 bits 
(constants are still not handled).  Adds ConvertActions
to control fp-to-fp conversions (these are currently
defaulted for all other targets, so no changes there).

llvm-svn: 40958
 2007-08-09 01:04:01 +00:00
Dale Johannesen
6c8f73eac6 Fix arguments for some Altivec instructions. From SWB. 
llvm-svn: 40957
 2007-08-09 00:49:19 +00:00
Scott Michel
86052f49c0 If a target really needs to custom lower constants, it should be allowed 
to do so.

llvm-svn: 40955
 2007-08-08 23:23:31 +00:00
Owen Anderson
3db807751b Add more comments to memdep. 
llvm-svn: 40953
 2007-08-08 22:26:03 +00:00