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731 Commits

Author SHA1 Message Date
Chris Lattner
b0b4ec5655 Don't create zero sized stack objects even for array allocas with a zero 
number of elements.

llvm-svn: 23219
 2005-09-02 18:41:28 +00:00
Chris Lattner
b6cde17d29 Fix the release build, noticed by Eric van Riet Paap 
llvm-svn: 23215
 2005-09-02 07:09:28 +00:00
Chris Lattner
a66403dbf7 For values that are live across basic blocks and need promotion, use ANY_EXTEND 
instead of ZERO_EXTEND to eliminate extraneous extensions.  This eliminates
dead zero extensions on formal arguments and other cases on PPC, implementing
the newly tightened up test/Regression/CodeGen/PowerPC/small-arguments.ll test.

llvm-svn: 23205
 2005-09-02 00:19:37 +00:00
Chris Lattner
975f5c9f46 It is NDEBUG not _NDEBUG 
llvm-svn: 23186
 2005-09-01 18:44:10 +00:00
Chris Lattner
075250bda1 Disable this code, which broke many tests last night 
llvm-svn: 23114
 2005-08-27 16:16:51 +00:00
Chris Lattner
e7a2998064 Don't copy regs that are only used in the entry block into a vreg. This 
changes the code generated for:

short %test(short %A) {
  %B = xor short %A, -32768
  ret short %B
}

to:

_test:
        xori r2, r3, 32768
        xoris r2, r2, 65535
        extsh r3, r2
        blr

instead of:

_test:
        rlwinm r2, r3, 0, 16, 31
        xori r2, r3, 32768
        xoris r2, r2, 65535
        extsh r3, r2
        blr

llvm-svn: 23109
 2005-08-26 22:49:59 +00:00
Chris Lattner
13d7c252e5 Call the InsertAtEndOfBasicBlock hook if the usesCustomDAGSchedInserter 
flag is set on an instruction.

llvm-svn: 23098
 2005-08-26 20:54:47 +00:00
Chris Lattner
99282c7b92 Make -view-isel-dags show the dag before instruction selecting, in case 
the target isel crashes due to unimplemented features like calls :)

llvm-svn: 22997
 2005-08-24 00:34:29 +00:00
Chris Lattner
7f9e078d11 Fix a problem where constant expr shifts would not have their shift amount 
promoted to the right type.  This fixes: IA64/2005-08-22-LegalizerCrash.ll

llvm-svn: 22969
 2005-08-22 17:28:31 +00:00
Chris Lattner
1a908c8920 Enable critical edge splitting by default 
llvm-svn: 22863
 2005-08-18 17:35:14 +00:00
Chris Lattner
c9950c11a9 Add a new beta option for critical edge splitting, to avoid a problem that 
Nate noticed in yacr2 (and I know occurs in other places as well).

This is still rough, as the critical edge blocks are not intelligently placed
but is added to get some idea to see if this improves performance.

llvm-svn: 22825
 2005-08-17 06:37:43 +00:00
Chris Lattner
ba28c2733f Fix a regression on X86, where FP values can be promoted too. 
llvm-svn: 22822
 2005-08-17 06:06:25 +00:00
Chris Lattner
33182325f5 Eliminate the RegSDNode class, which 3 nodes (CopyFromReg/CopyToReg/ImplicitDef) 
used to tack a register number onto the node.

Instead of doing this, make a new node, RegisterSDNode, which is a leaf
containing a register number.  These three operations just become normal
DAG nodes now, instead of requiring special handling.

Note that with this change, it is no longer correct to make illegal
CopyFromReg/CopyToReg nodes.  The legalizer will not touch them, and this
is bad, so don't do it. :)

llvm-svn: 22806
 2005-08-16 21:55:35 +00:00
Chris Lattner
d47675ed24 Eliminate the SetCCSDNode in favor of a CondCodeSDNode class. This pulls the 
CC out of the SetCC operation, making SETCC a standard ternary operation and
CC's a standard DAG leaf.  This will make it possible for other node to use
CC's as operands in the future...

llvm-svn: 22728
 2005-08-09 20:20:18 +00:00
Jeff Cohen
5f4ef3c5a8 Eliminate all remaining tabs and trailing spaces. 
llvm-svn: 22523
 2005-07-27 06:12:32 +00:00
Nate Begeman
1ac40a1245 Remove unnecessary FP_EXTEND. This causes worse codegen for SSE. 
llvm-svn: 22469
 2005-07-19 16:50:03 +00:00
Chris Lattner
f5473e44a9 Make several cleanups to Andrews varargs change: 
1. Pass Value*'s into lowering methods so that the proper pointers can be
   added to load/stores from the valist
2. Intrinsics that return void should only return a token chain, not a token
   chain/retval pair.
3. Rename LowerVAArgNext -> LowerVAArg, because VANext is long gone.

llvm-svn: 22338
 2005-07-05 19:57:53 +00:00
Andrew Lenharth
2edc1881ac restore old srcValueNode behavior and try to to work around it 
llvm-svn: 22315
 2005-06-29 18:54:02 +00:00
Andrew Lenharth
8192568fbc tracking the instructions causing loads and stores provides more information than just the pointer being loaded or stored 
llvm-svn: 22311
 2005-06-29 15:57:19 +00:00
Andrew Lenharth
253145299b If we support structs as va_list, we must pass pointers to them to va_copy 
See last commit for LangRef, this implements it on all targets.

llvm-svn: 22273
 2005-06-22 21:04:42 +00:00
Andrew Lenharth
9144ec4764 core changes for varargs 
llvm-svn: 22254
 2005-06-18 18:34:52 +00:00
Chris Lattner
e4f71d036f Fix construction of ioport intrinsics, fixing X86/io.llx and io-port.llx 
llvm-svn: 22026
 2005-05-14 13:56:55 +00:00
Chris Lattner
96c262e24b Eliminate special purpose hacks for dynamic_stack_alloc. 
llvm-svn: 22015
 2005-05-14 07:29:57 +00:00
Chris Lattner
29dcc71d83 LowerOperation takes a dag 
llvm-svn: 22004
 2005-05-14 05:50:48 +00:00
Chris Lattner
cbefe72fb2 Align doubles on 8-byte boundaries if possible. 
llvm-svn: 21993
 2005-05-13 23:14:17 +00:00
Chris Lattner
2e77db6af6 Add an isTailCall flag to LowerCallTo 
llvm-svn: 21958
 2005-05-13 18:50:42 +00:00
Chris Lattner
d0b0ecca3f Emit function entry code after lowering hte arguments. 
llvm-svn: 21931
 2005-05-13 07:33:32 +00:00
Chris Lattner
0220b2952f Allow targets to emit code into the entry block of each function 
llvm-svn: 21930
 2005-05-13 07:23:21 +00:00
Chris Lattner
111778e665 Pass calling convention to use into lower call to 
llvm-svn: 21900
 2005-05-12 19:56:57 +00:00
Chris Lattner
490769c5b6 wrap long line 
llvm-svn: 21870
 2005-05-11 18:57:06 +00:00
Chris Lattner
2d8b55c476 The semantics of cast X to bool are a comparison against zero, not a truncation! 
llvm-svn: 21833
 2005-05-09 22:17:13 +00:00
Chris Lattner
20eaeae966 Add support for matching the READPORT, WRITEPORT, READIO, WRITEIO intrinsics 
llvm-svn: 21825
 2005-05-09 20:22:36 +00:00
Chris Lattner
57d294f2ac Don't use the load/store instruction as the source pointer, use the pointer 
being stored/loaded through!

llvm-svn: 21806
 2005-05-09 04:28:51 +00:00
Chris Lattner
f5675a0813 wrap long lines 
llvm-svn: 21804
 2005-05-09 04:08:33 +00:00
Chris Lattner
7876156ba0 When hitting an unsupported intrinsic, actually print it 
Lower debug info to noops.

llvm-svn: 21698
 2005-05-05 17:55:17 +00:00
Andrew Lenharth
5e177826fd Implement count leading zeros (ctlz), count trailing zeros (cttz), and count 
population (ctpop).  Generic lowering is implemented, however only promotion
is implemented for SelectionDAG at the moment.

More coming soon.

llvm-svn: 21676
 2005-05-03 17:19:30 +00:00
Chris Lattner
8002640eab Codegen and legalize sin/cos/llvm.sqrt as FSIN/FCOS/FSQRT calls. This patch 
was contributed by Morten Ofstad, with some minor tweaks and bug fixes added
by me.

llvm-svn: 21636
 2005-04-30 04:43:14 +00:00
Andrew Lenharth
4a73c2cfdc Implement Value* tracking for loads and stores in the selection DAG. This enables one to use alias analysis in the backends. 
(TRUNK)Stores and (EXT|ZEXT|SEXT)Loads have an extra SDOperand which is a SrcValueSDNode which contains the Value*.  Note that if the operation is introduced by the backend, it will still have the operand, but the value* will be null.

llvm-svn: 21599
 2005-04-27 20:10:01 +00:00
Misha Brukman
774511633d Convert tabs to spaces 
llvm-svn: 21439
 2005-04-22 04:01:18 +00:00
Misha Brukman
835702a094 Remove trailing whitespace 
llvm-svn: 21420
 2005-04-21 22:36:52 +00:00
Nate Begeman
af1c0f7a00 Fold shift by size larger than type size to undef 
Make llvm undef values generate ISD::UNDEF nodes

llvm-svn: 21261
 2005-04-12 23:12:17 +00:00
Chris Lattner
8a98c7f337 Emit BRCONDTWOWAY when possible. 
llvm-svn: 21167
 2005-04-09 03:30:29 +00:00
Chris Lattner
0c14000760 transform fabs/fabsf calls into FABS nodes. 
llvm-svn: 21014
 2005-04-02 05:26:53 +00:00
Chris Lattner
f68fd0b533 Turn -0.0 - X -> fneg 
llvm-svn: 21011
 2005-04-02 05:04:50 +00:00
Andrew Lenharth
dec53920b4 PCMarker support for DAG and Alpha 
llvm-svn: 20965
 2005-03-31 21:24:06 +00:00
Chris Lattner
5ca31d9831 Instead of setting up the CFG edges at selectiondag construction time, set 
them up after the code has been emitted.  This allows targets to select one
mbb as multiple mbb's as needed.

llvm-svn: 20937
 2005-03-30 01:10:47 +00:00
Chris Lattner
db45f7d763 Fix a bug that andrew noticed where we do not correctly sign/zero extend 
returned integer values all of the way to 64-bits (we only did it to 32-bits
leaving the top bits undefined).  This causes problems for targets like alpha
whose ABI's define the top bits too.

llvm-svn: 20926
 2005-03-29 19:09:56 +00:00
Nate Begeman
f656525cb6 Change interface to LowerCallTo to take a boolean isVarArg argument. 
llvm-svn: 20842
 2005-03-26 01:29:23 +00:00
Chris Lattner
531f9e92d4 This mega patch converts us from using Function::a{iterator|begin|end} to 
using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!

llvm-svn: 20597
 2005-03-15 04:54:21 +00:00
Misha Brukman
73e929f89d Fix compilation errors with VS 2005, patch by Aaron Gray. 
llvm-svn: 20231
 2005-02-17 21:39:27 +00:00