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Author SHA1 Message Date
Chris Lattner
20a35c3fa5 Teach the codegen to turn [aez]ext (setcc) -> selectcc of 1/0, which often 
allows other simplifications.  For example, this compiles:
int isnegative(unsigned int X) {
   return !(X < 2147483648U);
}

Into this code:

x86:
        movl 4(%esp), %eax
        shrl $31, %eax
        ret
arm:
        mov r0, r0, lsr #31
        bx lr
thumb:
        lsr r0, r0, #31
        bx lr

instead of:

x86:
        cmpl $0, 4(%esp)
        sets %al
        movzbl %al, %eax
        ret

arm:
        mov r3, #0
        cmp r0, #0
        movlt r3, #1
        mov r0, r3
        bx lr

thumb:
        mov r2, #1
        mov r1, #0
        cmp r0, #0
        blt LBB1_2      @entry
LBB1_1: @entry
        cpy r2, r1
LBB1_2: @entry
        cpy r0, r2
        bx lr

Testcase here: test/CodeGen/Generic/ispositive.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35883 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 05:32:27 +00:00
Chris Lattner
cb42ba454c new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35882 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 05:32:13 +00:00
Chris Lattner
1982ef20c4 Codegen integer abs more efficiently using the trick from the PPC CWG. This 
improves codegen on many architectures.  Tests committed as CodeGen/*/iabs.ll

X86 Old:			X86 New:
_test:				_test:
   movl 4(%esp), %ecx		   movl 4(%esp), %eax
   movl %ecx, %eax		   movl %eax, %ecx
   negl %eax			   sarl $31, %ecx
   testl %ecx, %ecx		   addl %ecx, %eax
   cmovns %ecx, %eax		   xorl %ecx, %eax
   ret				   ret

PPC Old:			PPC New:
_test:				_test:
   cmpwi cr0, r3, -1		   srawi r2, r3, 31
   neg r2, r3			   add r3, r3, r2
   bgt cr0, LBB1_2 ;		   xor r3, r3, r2
LBB1_1: ;			   blr
   mr r3, r2
LBB1_2: ;
   blr

ARM Old:			ARM New:
_test:				_test:
   rsb r3, r0, #0		   add r3, r0, r0, asr #31
   cmp r0, #0			   eor r0, r3, r0, asr #31
   movge r3, r0			   bx lr
   mov r0, r3
   bx lr

Thumb Old:			Thumb New:
_test:				_test:
   neg r2, r0			   asr r2, r0, #31
   cmp r0, #0			   add r0, r0, r2
   bge LBB1_2			   eor r0, r2
LBB1_1: @			   bx lr
   cpy r0, r2
LBB1_2: @
   bx lr


Sparc Old:			Sparc New:
test:				test:
   save -96, %o6, %o6		   save -96, %o6, %o6
   sethi 0, %l0			   sra %i0, 31, %l0
   sub %l0, %i0, %l0		   add %i0, %l0, %l1
   subcc %i0, -1, %l1		   xor %l1, %l0, %i0
   bg .BB1_2			   restore %g0, %g0, %g0
   nop				   retl
.BB1_1:				   nop
   or %g0, %l0, %i0
.BB1_2:
   restore %g0, %g0, %g0
   retl
   nop

It also helps alpha/ia64 :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35881 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 05:11:38 +00:00
Chris Lattner
603572a771 new testcases for integer abs function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35880 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 05:02:57 +00:00
Chris Lattner
ed4e51e58e fix a regression introduced by my last patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35879 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 03:27:24 +00:00
Chris Lattner
ade7592085 Hack to get sys::Path to recognize macho dylibs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35878 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 03:15:35 +00:00
Reid Spencer
18da072088 For PR1146: 
Put the parameter attributes in their own ParamAttr name space. Adjust the
rest of llvm as a result.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35877 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 02:44:20 +00:00
Reid Spencer
947aa7de67 Teach sys::Path how to recognize different kinds of object files for ELF 
and Mach-O systems. Additionally, correct the Mach-O logic code to look at
byte 12 not byte 15. Hopefully this fixes the llvm-ld warning on Darwin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35876 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 02:02:09 +00:00
Chris Lattner
f4b1818728 Simplify SROA conversion to integer in some ways, make it more general in others. 
We now tolerate small amounts of undefined behavior, better emulating what
would happen if the transaction actually occurred in memory.  This fixes
SingleSource/UnitTests/2007-04-10-BitfieldTest.c on PPC, at least until
Devang gets a chance to fix the CFE from doing undefined things with bitfields :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35875 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 00:57:54 +00:00
Reid Spencer
410aa020a2 Make isDynamicLibrary detect more than just an ELF file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35874 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 00:49:39 +00:00
Reid Spencer
c9f1b2d4c6 Hack the shared library extension for dylib. The existing code just looks 
plain wrong since $module was never defined so we always get .so which is
broken on Darwin. Just force it to .dylib.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35873 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 00:33:43 +00:00
Reid Spencer
f6390b51e3 Hopefully fix LTDL_SHLIB_EXT on Darwin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35872 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-11 00:27:39 +00:00
Bill Wendling
bb1ee05253 Add support for our first SSSE3 instruction "pmulhrsw". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35869 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 22:10:25 +00:00
Devang Patel
773fd38553 New test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35868 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 21:43:01 +00:00
Chris Lattner
bae3bd7c19 new micro optzn 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35867 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 21:14:01 +00:00
Jeff Cohen
7545422f08 Correctly report version of GCC used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35866 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 19:13:43 +00:00
Devang Patel
bfe2c9ccf8 Add test case for PR 1154. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35865 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 16:57:08 +00:00
Chris Lattner
2b4c234388 fix a comment bug Reid noticed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35864 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 16:33:06 +00:00
Devang Patel
0aa37f472a Enable loop rotate pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35863 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 15:43:36 +00:00
Chris Lattner
403949ea93 add missing methods, mark stuff const 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35862 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 07:06:21 +00:00
Chris Lattner
99b1b38818 getLimitedValue now just forward to APInt's getLimitedValue. Mark it const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35861 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 06:44:12 +00:00
Chris Lattner
4bda52d6b5 add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35860 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 06:43:18 +00:00
Chris Lattner
eb13d1b710 restore support for negative strides 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35859 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 03:48:29 +00:00
Chris Lattner
c6eb6d7255 apparently some people commit without building the tree, or they forget to 
commit a LOT of files.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35858 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 03:20:39 +00:00
Chris Lattner
466b9bd757 unbreak the build :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35857 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 03:18:19 +00:00
Jeff Cohen
a838321648 Fix build problem. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35856 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 03:10:46 +00:00
Reid Spencer
461b258cf8 Drop the "bit" prefix for the part.select intrinsic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35854 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 02:52:46 +00:00
Reid Spencer
beacf66d3f Fix name of an intrinsic: bit.part_select -> part.select 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35853 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-10 02:51:31 +00:00
Chris Lattner
81973ef7cb Strengthen the boundary conditions of this fold, implementing 
InstCombine/set.ll:test25


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35852 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:52:13 +00:00
Chris Lattner
5c05fa0d0b new testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35851 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:51:49 +00:00
Jeff Cohen
2da8da46ba No longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35850 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:42:32 +00:00
Devang Patel
1362c8c5da Add check for opt crash. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35849 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:40:15 +00:00
Owen Anderson
cc221cdf0c Re-constify things that don't break the build. Last patch in this 
series, I promise.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35848 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:38:18 +00:00
Chris Lattner
2b95fd67da remove dead target hooks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35847 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:34:08 +00:00
Chris Lattner
37caf8c68e remove dead target hooks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35846 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:33:39 +00:00
Chris Lattner
eb8c74ddf2 remove some dead hooks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35845 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:31:19 +00:00
Chris Lattner
9fda270e2c eliminate the last uses of some TLI methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35844 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:29:07 +00:00
Owen Anderson
f7c83188cd Unconst-ify stuff that broke the build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35843 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 23:08:26 +00:00
Owen Anderson
ad19014591 Const-ify some parameters, and some cosmetic cleanups. No functionality 
change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35842 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 22:54:50 +00:00
Owen Anderson
0cd0461873 Tabs -> Spaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35841 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 22:31:43 +00:00
Chris Lattner
b445d0cbb9 remove some dead target hooks, subsumed by isLegalAddressingMode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35840 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 22:27:04 +00:00
Owen Anderson
17cba6d232 Improve some _slow_ behavior introduced in my patches the last few days. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35839 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 22:25:09 +00:00
Devang Patel
43979df430 Add Loop Rotate test cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35838 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 22:22:42 +00:00
Chris Lattner
579633cd10 switch LSR to use isLegalAddressingMode instead of other simpler hooks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35837 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 22:20:14 +00:00
Devang Patel
6c36157f3d Check _all_ PHINodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35836 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 22:20:10 +00:00
Chris Lattner
7c7ba9d2d5 Fix a bug in PPCTargetLowering::isLegalAddressingMode, scales other than 0/1/2 
are always unsupported.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35835 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 22:10:05 +00:00
Anton Korobeynikov
54e2b142be Use integer log for metric calculation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35834 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 21:57:03 +00:00
Devang Patel
c415afc726 Insert new pre-header before new header. Original pre-header may 
happen to be an entry, in such case, it is not a good idea to
insert new block before entry.

Also fix typo in assertion check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35833 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 21:40:43 +00:00
Chris Lattner
050d541d08 add a default ctor for AddrMode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35832 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 21:18:34 +00:00
Chris Lattner
24e90d3c5b Fix a bug where calling materializeModule could corrupt the module, reading 
multiple copies of the function into the Function*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35831 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 20:28:40 +00:00