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10215 Commits

Author SHA1 Message Date
Chris Lattner
88de6e77bf Make legalize a bit more efficient, and canonicalize sub X, C -> add X, -C 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21882 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-12 00:17:04 +00:00
Nate Begeman
d7c4a4a6c0 Necessary changes to codegen cttz efficiently on PowerPC 
1. Teach LegalizeDAG how to better legalize CTTZ if the target doesn't have
   CTPOP, but does have CTLZ
2. Teach PPC32 how to do sub x, const -> add x, -const for valid consts
3. Teach PPC32 how to do and (xor a, -1) b -> andc b, a
4. Teach PPC32 that ISD::CTLZ -> PPC::CNTLZW


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21880 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 23:43:56 +00:00
Tanya Lattner
d977095838 Fixed issue that broke ssa. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21878 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 21:45:03 +00:00
Chris Lattner
4548a0ed32 fix some GCC 4 warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21877 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 21:40:40 +00:00
John Criswell
3163e2d9f3 Added support for decomposing constant expressions containing shr and shl 
instructions.
Review of this commit would be greatly appreciated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21876 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 21:16:42 +00:00
Chris Lattner
98cf45bbf6 Fix lowering of ctlz, so now UnitTests/2005-05-11-Popcount-ffs-fls passes 
with the CBE


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21875 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 20:24:12 +00:00
Chris Lattner
a801172e50 Fix lowering of cttz to work with signed values 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21874 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 20:02:14 +00:00
Chris Lattner
86f3e0c24e fix and concisify intinsic lowering for ctpop. Unfortunately, this code 
looks completely untested. :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21873 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 19:42:05 +00:00
Chris Lattner
0d67f0c80f Fix the last remaining bug preventing us from switching the X86 BE over 
from the simple isel to the pattern isel.  This forces inserted libcalls
to serialize against other function calls, which was breaking
UnitTests/2005-05-12-Int64ToFP.  Hopefully this will fix issues on other
targets as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21872 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 19:02:11 +00:00
Chris Lattner
27e9b41464 Do not memoize ADJCALLSTACKDOWN nodes, provide a method to hack on them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21871 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 18:57:39 +00:00
Chris Lattner
16ce0df927 wrap long line 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21870 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 18:57:06 +00:00
Chris Lattner
5c33c9a166 Make sure to legalize generated ctpop nodes, convert tabs to spaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21868 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 18:35:21 +00:00
Duraid Madina
57ff7e5f64 expand count-leading/trailing-zeros; the test 2005-05-11-Popcount-ffs-fls.c 
should now pass (the "LLVM" and "REF" results should be identical)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21866 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 08:45:08 +00:00
Chris Lattner
18aa680a96 Add some notes for expanding clz/ctz 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21862 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 05:27:09 +00:00
Chris Lattner
e3ef0a8b9f Simplify this code, use the proper shift amount 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21861 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 05:21:31 +00:00
Duraid Madina
63bbed536c add the popcount instruction and support this in the isel 
the primary user of this will probably end up being find-first-set-bit/find-
last-set-bit, which i'll get around to...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21860 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 05:16:09 +00:00
Chris Lattner
9b583b4910 Legalize this correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21859 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 05:09:47 +00:00
Chris Lattner
1f38e5c431 No really IA*64* :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21858 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 05:03:56 +00:00
Chris Lattner
c610d4267f X86 has more than just 32-bit registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21857 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 05:00:34 +00:00
Chris Lattner
edb1add9a0 implement expansion of ctpop nodes, implementing CodeGen/Generic/llvm-ct-intrinsics.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21856 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 04:51:16 +00:00
Chris Lattner
276260b16d Print bit count nodes correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21855 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-11 04:50:30 +00:00
Chris Lattner
6d5857e139 Do not use "" as a sentinal for a missing argument! This fixes PR560. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21850 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-10 23:20:17 +00:00
Misha Brukman
b5cd8459df Why output multiple strings, let the compiler concatenate them for us for free 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21845 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-10 22:03:50 +00:00
Misha Brukman
5a2a3826ef * Convert tabs to spaces, fix code alignment 
* Remove trailing whitespace
* Wrap long lines


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21844 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-10 22:02:28 +00:00
Chris Lattner
6415bb4c29 Convert feature of the simple isel over for the pattern isel to use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21840 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-10 03:53:18 +00:00
Chris Lattner
641f02f10f Fix Reassociate/shifttest.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21839 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-10 03:39:25 +00:00
Jeff Cohen
19bb2283e6 Silence some VC++ warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21838 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-10 02:22:38 +00:00
Chris Lattner
7f78f218fd If a function contains no allocas, all of the calls in it are trivially 
suitable for tail calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21836 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 23:51:13 +00:00
Chris Lattner
ef311aa7cf The semantics of cast X to bool are a comparison against zero, not a truncation! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21833 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 22:17:13 +00:00
Chris Lattner
966cdfb600 Implement READPORT/WRITEPORT, implementing the last X86 regression tests 
that were failing with the pattern selector.  Note that the support that
existed in the simple selector was clearly broken in several ways though
(which has also been fixed).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21831 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 21:17:38 +00:00
Chris Lattner
cecd67b432 do not emit illegal instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21830 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 21:06:04 +00:00
Chris Lattner
82c7897f49 Fix the syntax of the i/o instructions, these are obviously unused. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21829 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 20:49:20 +00:00
Chris Lattner
4e6ce5f9c7 legalize readio/writeio into load/stores, fixing CodeGen/X86/io.llx with 
the pattern isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21828 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 20:37:29 +00:00
Chris Lattner
6d5b8e1646 legalize readio/writeio into a load/store if requested 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21827 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 20:36:57 +00:00
Chris Lattner
52d08bd9d8 legalize READPORT, WRITEPORT, READIO, WRITEIO, at least in the basic cases 
where they are directly supported by the architecture.  Wrap a bunch of
long lines :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21826 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 20:23:03 +00:00
Chris Lattner
d0f6c1f52d Add support for matching the READPORT, WRITEPORT, READIO, WRITEIO intrinsics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21825 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 20:22:36 +00:00
Chris Lattner
3c6910153c Add support for READPORT, WRITEPORT, READIO, WRITEIO 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21824 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 20:22:17 +00:00
Chris Lattner
a0dbf181e0 restore some non-dead code I removed last night breaking double casts to 
uint


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21821 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 18:37:02 +00:00
Chris Lattner
cafb67b250 fold and (shl X, C1), C2 -> rlwinm when possible. Many other cases are possible, 
include and (srl)    and the inverses (shl and) etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21820 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 17:39:48 +00:00
Chris Lattner
57aa5961a9 Fold shifts into subsequent SHL's. These shifts often arise due to addrses 
arithmetic lowering.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21818 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 17:06:45 +00:00
Duraid Madina
8a3042c872 fix and cleanup constmul code a bit, this fixes mediabench/toast and 
probably a couple of other tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21814 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 13:18:34 +00:00
Chris Lattner
a80d2bd89c Wrap long lines, remove dead code that is now handled by legalize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21811 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 05:40:26 +00:00
Chris Lattner
2afa1910d4 Fix FP -> bool casts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21810 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 05:33:18 +00:00
Chris Lattner
6e4c6495eb implement and.ll:test33 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21809 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 04:58:36 +00:00
Chris Lattner
fd414a27fd Don't use the load/store instruction as the source pointer, use the pointer 
being stored/loaded through!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21806 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 04:28:51 +00:00
Chris Lattner
0437cdd6dc memoize all nodes, even null Value* nodes. Do not add two token chain outputs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21805 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 04:14:13 +00:00
Chris Lattner
369e6db9b6 wrap long lines 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21804 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 04:08:33 +00:00
Chris Lattner
2bf3c26b2b Print SrcValue nodes correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21803 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 04:08:27 +00:00
Chris Lattner
e3e0f2765a Fix X86/2005-05-08-FPStackifierPHI.ll: ugly gross hack. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21801 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 03:36:39 +00:00
Chris Lattner
cb9048a6e8 Preserve CC's when linking modules 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21799 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 01:09:39 +00:00
Chris Lattner
f201dbc1a4 Preserve calling conventions when doing IPO 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21798 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 01:05:50 +00:00
Chris Lattner
c154cef9a1 wrap long lines, preserve calling conventions when cloning functions and 
turning calls into invokes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21797 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 01:04:34 +00:00
Chris Lattner
42e3c81c5f By definition, 'tail' calls cannot access the stack frame of their caller. 
Expose this as a simple form of mod/ref information.  This implements
BasicAA/tailcall-modref.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21796 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 23:58:12 +00:00
Chris Lattner
37c121acf4 Verify that varargs functions all have ccc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21792 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 22:27:09 +00:00
Chris Lattner
fb217adf92 Convert non-address taken functions with C calling conventions to fastcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21791 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 22:18:06 +00:00
Chris Lattner
44b8c7d5d3 Implement Reassociate/mul-neg-add.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21788 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 21:41:35 +00:00
Chris Lattner
6f156856ca Bail out earlier 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21786 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 21:33:47 +00:00
Chris Lattner
f33151aff0 Teach reassociate that 0-X === X*-1 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21785 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 21:28:52 +00:00
Chris Lattner
9c72319938 Fix PR557 and basictest[34].ll. 
This makes reassociate realize that loads should be treated as unmovable, and
gives distinct ranks to distinct values defined in the same basic block, allowing
reassociate to do its thing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21783 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 20:57:04 +00:00
Chris Lattner
c9fd097a01 Add debugging information 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21781 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 20:09:57 +00:00
Chris Lattner
989f6229bc eliminate gotos 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21780 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 19:48:43 +00:00
Chris Lattner
1f243e9f43 Wrap long lines. Fix "warning: conflicting types for built-in function 'memset'" 
warning from the CBE+GCC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21779 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 19:46:29 +00:00
Chris Lattner
109d34d6ff Improve reassociation handling of inverses, implementing inverses.ll. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21778 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 18:59:37 +00:00
Chris Lattner
928128281f clean up and modernize this pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21776 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 18:45:26 +00:00
Chris Lattner
120347e8d1 Strength reduce SAR into SHR if there is no way sign bits could be shifted 
in.  This tends to get cases like this:

  X = cast ubyte to int
  Y = shr int X, ...

Tested by: shift.ll:test24


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21775 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 17:34:56 +00:00
Chris Lattner
4690010006 Refactor some code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21772 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 00:19:31 +00:00
Chris Lattner
cc8a2b98f2 Handle some simple cases where we can see that values get annihilated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21771 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-08 00:08:33 +00:00
Chris Lattner
f4d4c87985 Fix a miscompilation of crafty by clobbering the "A" variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21770 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-07 23:49:08 +00:00
Chris Lattner
c0649ac931 Rewrite the guts of the reassociate pass to be more efficient and logical. Instead 
of trying to do local reassociation tweaks at each level, only process an expression
tree once (at its root).  This does not improve the reassociation pass in any real way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21768 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-07 21:59:39 +00:00
Reid Spencer
789082af03 * Add two strlen optimizations: 
strlen(x) != 0 -> *x != 0
    strlen(x) == 0 -> *x == 0
* Change nested statistics to use style of other LLVM statistics so that
  only the name of the optimization (simplify-libcalls) is used as the
  statistic name, and the description indicates which specific all is
  optimized. Cuts down on some redundancy and saves a few bytes of space.
* Make note of stpcpy optimization that could be done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21766 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-07 20:15:59 +00:00
Reid Spencer
673c1a9170 Don't increment the counter unless the debug flag is set. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21762 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-07 04:59:45 +00:00
Chris Lattner
0975ed5f4e Convert shifts to muls to assist reassociation. This implements 
Reassociate/shifttest.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21761 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-07 04:24:13 +00:00
Chris Lattner
08b43921e1 Simplify the code and rearrange it. No major functionality changes here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21759 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-07 04:08:02 +00:00
Jeff Cohen
39cef60259 Silence VC++ warnings about unsafe mixing of ints and bools with the | operator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21758 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-07 02:44:04 +00:00
Chris Lattner
3f6948d686 remove some dead (always dynamically false) flags 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21752 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 22:35:09 +00:00
Chris Lattner
dee199fe82 encode calling conventions for call/invoke instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21751 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 22:34:01 +00:00
Chris Lattner
479ffebd73 encode function calling convs in the bytecode file. invoke and call are 
still to come.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21749 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 20:42:57 +00:00
Chris Lattner
a8e8f16714 parse new calling conv specifiers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21748 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 20:27:19 +00:00
Chris Lattner
28caccff30 wrap a longline 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21747 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 20:27:03 +00:00
Chris Lattner
d511898b58 add support for explicit calling conventions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21746 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 20:26:43 +00:00
Chris Lattner
f924a4c21f use splice instead of remove/insert for a minor speedup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21743 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 19:58:35 +00:00
Chris Lattner
1f64025d88 remove some ugly hacks that are no longer needed since andrew removed the 
varargs munging code


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21742 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 19:49:51 +00:00
Chris Lattner
3799ed83b4 BAD typeo which caused many testsuite failures last night. Note to self, do 
not change code after testing it without retesting!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21741 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 17:13:16 +00:00
Chris Lattner
50a8a17e65 clean up the CBE output a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21740 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:58:42 +00:00
Chris Lattner
fe673d9351 add tail marker as a comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21739 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:53:07 +00:00
Chris Lattner
a471e045b7 Make the stub functions be tail calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21738 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:48:54 +00:00
Chris Lattner
a9e9211bbb Preserve tail marker 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21737 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:48:21 +00:00
Chris Lattner
1b49141821 Implement Transforms/Inline/inline-tail.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21736 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:47:52 +00:00
Chris Lattner
1430ef134d preserve the tail marker 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21734 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:46:58 +00:00
Chris Lattner
c28ade4266 lex tail 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21729 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:20:33 +00:00
Chris Lattner
38287bdfde add bytecode reader support for tail calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21727 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:13:34 +00:00
Chris Lattner
ddb6db4fa1 Add a 'tail' marker for call instructions, patch contributed by 
Alexander Friedman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21722 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 05:51:46 +00:00
Chris Lattner
19bdc03adc Wrap long lines 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21720 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 05:34:40 +00:00
Chris Lattner
ec710c5b12 DCE intrinsic instructions without side effects. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21719 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 05:27:34 +00:00
Chris Lattner
998fffdda1 These intrinsics do not access memory 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21718 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 05:21:04 +00:00
Chris Lattner
eabfa4787a Teach instcombine propagate zeroness through shl instructions, implementing 
and.ll:test31


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21717 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 04:53:20 +00:00
Chris Lattner
d7115b01a0 Implement shift.ll:test23. If we are shifting right then immediately truncating 
the result, turn signed shift rights into unsigned shift rights if possible.

This leads to later simplification and happens *often* in 176.gcc.  For example,
this testcase:

struct xxx { unsigned int code : 8; };
enum codes { A, B, C, D, E, F };
int foo(struct xxx *P) {
  if ((enum codes)P->code == A)
     bar();
}

used to be compiled to:

int %foo(%struct.xxx* %P) {
        %tmp.1 = getelementptr %struct.xxx* %P, int 0, uint 0           ; <uint*> [#uses=1]
        %tmp.2 = load uint* %tmp.1              ; <uint> [#uses=1]
        %tmp.3 = cast uint %tmp.2 to int                ; <int> [#uses=1]
        %tmp.4 = shl int %tmp.3, ubyte 24               ; <int> [#uses=1]
        %tmp.5 = shr int %tmp.4, ubyte 24               ; <int> [#uses=1]
        %tmp.6 = cast int %tmp.5 to sbyte               ; <sbyte> [#uses=1]
        %tmp.8 = seteq sbyte %tmp.6, 0          ; <bool> [#uses=1]
        br bool %tmp.8, label %then, label %UnifiedReturnBlock

Now it is compiled to:

        %tmp.1 = getelementptr %struct.xxx* %P, int 0, uint 0           ; <uint*> [#uses=1]
        %tmp.2 = load uint* %tmp.1              ; <uint> [#uses=1]
        %tmp.2 = cast uint %tmp.2 to sbyte              ; <sbyte> [#uses=1]
        %tmp.8 = seteq sbyte %tmp.2, 0          ; <bool> [#uses=1]
        br bool %tmp.8, label %then, label %UnifiedReturnBlock

which is the difference between this:

foo:
        subl $4, %esp
        movl 8(%esp), %eax
        movl (%eax), %eax
        shll $24, %eax
        sarl $24, %eax
        testb %al, %al
        jne .LBBfoo_2

and this:

foo:
        subl $4, %esp
        movl 8(%esp), %eax
        movl (%eax), %eax
        testb %al, %al
        jne .LBBfoo_2

This occurs 3243 times total in the External tests, 215x in povray,
6x in each f2c'd program, 1451x in 176.gcc, 7x in crafty, 20x in perl,
25x in gap, 3x in m88ksim, 25x in ijpeg.

Maybe this will cause a little jump on gcc tommorow :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21715 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 04:18:52 +00:00
Chris Lattner
7aed7ac5e1 Implement xor.ll:test22 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21713 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 02:07:39 +00:00
Chris Lattner
d152380ba8 implement and.ll:test30 and set.ll:test21 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21712 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 01:53:19 +00:00
Chris Lattner
828eeddb38 implement or.ll:test20 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21709 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 00:58:50 +00:00