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Author SHA1 Message Date
Chris Lattner
f4f66fafd9 use chain operands to ensure the copies don't wander from the rdtsc instruction. 
llvm-svn: 24434
 2005-11-20 22:01:40 +00:00
Chris Lattner
6efddab321 This should not be dce'd 
llvm-svn: 24433
 2005-11-20 21:46:52 +00:00
Andrew Lenharth
56419c94c7 oops 
llvm-svn: 24432
 2005-11-20 21:42:49 +00:00
Andrew Lenharth
957fb1697e check that rdtsc is generated from readcyclecounter 
llvm-svn: 24431
 2005-11-20 21:41:59 +00:00
Andrew Lenharth
a369904fc5 The second patch of X86 support for read cycle counter. 
llvm-svn: 24430
 2005-11-20 21:41:10 +00:00
Andrew Lenharth
b44263313a The first patch of X86 support for read cycle counter 
llvm-svn: 24429
 2005-11-20 21:32:07 +00:00
Chris Lattner
c830542c70 more progress towards bug 291 being finished. Patch by Owen Anderson, 
HAVE_GV case fixed up by me.

llvm-svn: 24428
 2005-11-20 03:45:52 +00:00
Chris Lattner
517942843d Unbreak codegen of bools. This should fix the llc/jit/llc-beta failures 
from last night.

llvm-svn: 24427
 2005-11-19 18:40:42 +00:00
Chris Lattner
3727cc7ac0 Initialize this variable on all paths, fixing a crasher in windows. Thanks 
to JeffC for pointing this out.

llvm-svn: 24426
 2005-11-19 07:48:33 +00:00
Chris Lattner
fc1975aa3b Improve Selection DAG printer portability. Patch by Owen Anderson! 
llvm-svn: 24425
 2005-11-19 07:44:09 +00:00
Chris Lattner
a36ad00a9a Teach tblgen about instruction operands that have multiple MachineInstr 
operands, digging into them to find register values (used on X86).  Patch
by Evan Cheng!

llvm-svn: 24424
 2005-11-19 07:05:57 +00:00
Chris Lattner
af79013023 Teach the x86 backend about the register constraints of its addressing mode. 
Patch by Evan Cheng

llvm-svn: 24423
 2005-11-19 07:01:30 +00:00
Chris Lattner
bec2158e66 Capture more operand info, patch by Evan Cheng 
llvm-svn: 24422
 2005-11-19 07:00:10 +00:00
Chris Lattner
72dc36da76 Teach the graph viewer to handle register operands that are zero. 
llvm-svn: 24421
 2005-11-19 06:58:46 +00:00
Chris Lattner
3a1a1557e1 Silence a bogus warning 
llvm-svn: 24420
 2005-11-19 05:51:46 +00:00
Chris Lattner
6e0171ba8b Add load and other support to the dag-dag isel. Patch contributed by Evan 
Cheng!

llvm-svn: 24419
 2005-11-19 02:11:08 +00:00
Chris Lattner
89056c7145 Add some method variants, patch by Evan Cheng 
llvm-svn: 24418
 2005-11-19 01:44:53 +00:00
Chris Lattner
e9a33d2505 Add two new construction methods, patch by Evan Cheng 
llvm-svn: 24417
 2005-11-19 01:42:10 +00:00
Nate Begeman
7d513f65ae Teach LLVM how to scalarize packed types. Currently, this only works on 
packed types with an element count of 1, although more generic support is
coming.  This allows LLVM to turn the following code:

void %foo(<1 x float> * %a) {
entry:
  %tmp1 = load <1 x float> * %a;
  %tmp2 = add <1 x float> %tmp1, %tmp1
  store <1 x float> %tmp2, <1 x float> *%a
  ret void
}

Into:

_foo:
        lfs f0, 0(r3)
        fadds f0, f0, f0
        stfs f0, 0(r3)
        blr

llvm-svn: 24416
 2005-11-19 00:36:38 +00:00
Chris Lattner
98ebd7a7d0 testcase for recent indvars patches 
llvm-svn: 24415
 2005-11-18 19:38:15 +00:00
Chris Lattner
e67f211b68 Fix a crash building 176.gcc due to my recent patch, which only fixed 
half the problem.

llvm-svn: 24414
 2005-11-18 18:30:47 +00:00
Andrew Lenharth
b8ad89c2a4 prevent latent switch creation 
llvm-svn: 24413
 2005-11-18 13:57:03 +00:00
Nate Begeman
78ac456d32 Split out the shift code from visitBinary. 
llvm-svn: 24412
 2005-11-18 07:42:56 +00:00
Chris Lattner
fc4928a31a Implement a refinement to the mem2reg algorithm for cases where an alloca 
has a single def.  In this case, look for uses that are dominated by the def
and attempt to rewrite them to directly use the stored value.

This speeds up mem2reg on these values and reduces the number of phi nodes
inserted.  This should address PR665.

llvm-svn: 24411
 2005-11-18 07:31:42 +00:00
Chris Lattner
86e6fa1ee7 This needs proper dominance 
llvm-svn: 24410
 2005-11-18 07:29:44 +00:00
Chris Lattner
bd00b4a18e post-dom-frontiers requires proper post-dominance 
llvm-svn: 24409
 2005-11-18 07:28:26 +00:00
Chris Lattner
48ddf6d833 This requires proper dominance 
llvm-svn: 24408
 2005-11-18 07:27:53 +00:00
Chris Lattner
a19b6a0800 Fix the dominates method to return true if the two nodes are the same. Add 
a new properlyDominates method to do what the old one did.

llvm-svn: 24407
 2005-11-18 07:27:33 +00:00
Chris Lattner
72fa26a85b add more patterns, patch by Evan Cheng. 
llvm-svn: 24406
 2005-11-18 01:04:42 +00:00
Nate Begeman
4567e9baf6 Also add the new vector value type here, for completeness. 
llvm-svn: 24405
 2005-11-18 00:53:32 +00:00
Nate Begeman
5784fb4adf Teach the type lowering code about turning packed types into vector types. 
Next step: generating vector dag nodes, and legalizing them into scalar
code.

llvm-svn: 24404
 2005-11-17 21:44:42 +00:00
Chris Lattner
da306413bb only use dyld stubs if not in ppc-static mode. This completes support for 
non-static codegen.

llvm-svn: 24403
 2005-11-17 19:40:30 +00:00
Chris Lattner
bf3324e75d This was checking the wrong GEP expression. Fixing this fixes a gccas crash 
compiling mysql reported by Ted Kremenek.

llvm-svn: 24402
 2005-11-17 19:35:42 +00:00
Chris Lattner
25e065cc46 refactor call operand handling to eliminate special cases from printOp. 
llvm-svn: 24401
 2005-11-17 19:25:59 +00:00
Chris Lattner
02522dc4e6 disentangle call operands from branch operands a bit 
llvm-svn: 24400
 2005-11-17 19:16:08 +00:00
Chris Lattner
b6af6ea0d4 add an option to generate completely non-pic code, corresponding to what 
gcc -static produces on PPC.  This is used for building kexts and other things.

With this, materializing the address of a global looks like:

        lis r2, ha16(L_H$non_lazy_ptr)
        la r3, lo16(L_H$non_lazy_ptr)(r2)

we're still emitting stubs for functions, which is wrong.  That is next.

llvm-svn: 24399
 2005-11-17 18:55:48 +00:00
Chris Lattner
7666d8192c Fix a bug that resistor on IRC hit where we tried to create token factor 
nodes of load results, not of their chain results.

llvm-svn: 24398
 2005-11-17 18:30:17 +00:00
Chris Lattner
4581404290 Enable global address legalization, fixing a todo and allowing the removal 
of some code.  This exposes the implicit load from the stubs to the DAG, allowing
them to be optimized by the dag combiner.  It also moves darwin specific stuff
out of the isel into the legalizer, and allows more to be moved to the .td file.

llvm-svn: 24397
 2005-11-17 18:26:56 +00:00
Chris Lattner
e3c5f4c9d2 Teach the selector to fold lo(g) into load instruction immediate fields 
llvm-svn: 24396
 2005-11-17 18:02:16 +00:00
Chris Lattner
92a1367bed Generate LA and ADDIS when possible. 
llvm-svn: 24395
 2005-11-17 17:52:01 +00:00
Chris Lattner
c46c672eba Use the right accessor to create this node 
llvm-svn: 24394
 2005-11-17 17:51:38 +00:00
Chris Lattner
6b83dcf750 Validate that the input to 'Pat' patterns is sane. 
llvm-svn: 24393
 2005-11-17 17:43:52 +00:00
Chris Lattner
789cdc4b29 Allow users to specify -Wl,-native* multiple times if they please 
llvm-svn: 24392
 2005-11-17 16:08:04 +00:00
Chris Lattner
464f4402cf teach tblgen to be smart enough to handle tglobaladdr nodes 
llvm-svn: 24391
 2005-11-17 07:39:45 +00:00
Chris Lattner
8d04987a39 Add an initial hack at legalizing GlobalAddress into the appropriate nodes 
on Darwin to remove smarts from the isel.  This is currently disabled by
default (uncomment setOperationAction(ISD::GlobalAddress to enable it).
tblgen needs to become smarter about tglobaladdr nodes and bigger patterns
needed to be added to the .td file.  However, we can currently emit stuff like
this:  :)

        li r2, lo16(L_x$non_lazy_ptr)
        lis r3, ha16(L_x$non_lazy_ptr)
        lwzx r2, r3, r2

The obvious improvements will follow.

llvm-svn: 24390
 2005-11-17 07:30:41 +00:00
Chris Lattner
b80ea80354 Add globaladdress and targetglobaladdress nodes for dag patterns 
llvm-svn: 24389
 2005-11-17 07:20:15 +00:00
Chris Lattner
5f605f3c12 LI could theoretically be used for the lo-part of a global address, just like 
lis can be used for the high part.

llvm-svn: 24388
 2005-11-17 07:04:43 +00:00
Chris Lattner
0b177075c2 Allow targets to custom legalize leaf nodes like GlobalAddress. 
llvm-svn: 24387
 2005-11-17 06:41:44 +00:00
Chris Lattner
7fdf96ed96 When lowering direct calls, lower them to use a targetglobaladress directly 
instead of a globaladdress.  This has no effect on the generated code at all.

llvm-svn: 24386
 2005-11-17 05:56:14 +00:00
Chris Lattner
48668daec3 Teach legalize about targetglobaladdress 
llvm-svn: 24385
 2005-11-17 05:52:24 +00:00