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91 Commits

Author SHA1 Message Date
Nate Begeman
4a95945fa5 Add the ability to lower return instructions to TargetLowering. This 
allows us to lower legal return types to something else, to meet ABI
requirements (such as that i64 be returned in two i32 regs on Darwin/ppc).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23802 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 23:23:37 +00:00
Chris Lattner
d222f6ab67 Fix Generic/2005-10-18-ZeroSizeStackObject.ll by not requesting a zero 
sized stack object if either the array size or the type size is zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23801 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 22:14:06 +00:00
Chris Lattner
2dfa8192ab remove hack 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23797 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-18 22:11:42 +00:00
Chris Lattner
af21d55aee Enable Nate's excellent DAG combiner work by default. This allows the 
removal of a bunch of ad-hoc and crufty code from SelectionDAG.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23682 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-10 16:47:10 +00:00
Chris Lattner
d48050aa15 make sure that -view-isel-dags is the input to the isel, not the input to 
the second phase of dag combining


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23631 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-05 06:09:10 +00:00
Jeff Cohen
2aeaf4e839 Fix VC++ warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23579 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-10-01 03:57:14 +00:00
Chris Lattner
01b3d73c20 Add FP versions of the binary operators, keeping the int and fp worlds seperate. 
Though I have done extensive testing, it is possible that this will break
things in configs I can't test.  Please let me know if this causes a problem
and I'll fix it ASAP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23504 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-28 22:28:18 +00:00
Chris Lattner
6c38b33613 If the target prefers it, use _setjmp/_longjmp should be used instead of setjmp/longjmp for llvm.setjmp/llvm.longjmp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23481 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-27 22:15:53 +00:00
Chris Lattner
fa57702388 If a function has liveins, and if the target requested that they be plopped 
into particular vregs, emit copies into the entry MBB.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23331 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-13 19:30:54 +00:00
Nate Begeman
2300f55046 Add an option to the DAG Combiner to enable it for beta runs, and turn on 
that option for PowerPC's beta.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23253 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-07 00:15:36 +00:00
Chris Lattner
fd88f64934 Don't create zero sized stack objects even for array allocas with a zero 
number of elements.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23219 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-02 18:41:28 +00:00
Chris Lattner
a639a43602 Fix the release build, noticed by Eric van Riet Paap 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23215 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-02 07:09:28 +00:00
Chris Lattner
fab08875b7 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23205 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-02 00:19:37 +00:00
Chris Lattner
da8abb0239 It is NDEBUG not _NDEBUG 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23186 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-01 18:44:10 +00:00
Chris Lattner
88b9c15912 Disable this code, which broke many tests last night 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23114 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-27 16:16:51 +00:00
Chris Lattner
9d3a483a38 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23109 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-26 22:49:59 +00:00
Chris Lattner
025c39bf36 Call the InsertAtEndOfBasicBlock hook if the usesCustomDAGSchedInserter 
flag is set on an instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23098 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-26 20:54:47 +00:00
Chris Lattner
82cfa5d616 Make -view-isel-dags show the dag before instruction selecting, in case 
the target isel crashes due to unimplemented features like calls :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22997 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 00:34:29 +00:00
Chris Lattner
8f03405ee5 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22969 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-22 17:28:31 +00:00
Chris Lattner
36b708f057 Enable critical edge splitting by default 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22863 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-18 17:35:14 +00:00
Chris Lattner
495a0b5191 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22825 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 06:37:43 +00:00
Chris Lattner
fae59b99b8 Fix a regression on X86, where FP values can be promoted too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22822 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 06:06:25 +00:00
Chris Lattner
d5d0f9bd20 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. :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22806 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 21:55:35 +00:00
Chris Lattner
7cf7e3f33f 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...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22728 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-09 20:20:18 +00:00
Jeff Cohen
00b16889ab Eliminate all remaining tabs and trailing spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-27 06:12:32 +00:00
Nate Begeman
700a3c97e9 Remove unnecessary FP_EXTEND. This causes worse codegen for SSE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22469 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-19 16:50:03 +00:00
Chris Lattner
e64e72b794 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22338 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-07-05 19:57:53 +00:00
Andrew Lenharth
06ef88472f restore old srcValueNode behavior and try to to work around it 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22315 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-29 18:54:02 +00:00
Andrew Lenharth
782ad62f33 tracking the instructions causing loads and stores provides more information than just the pointer being loaded or stored 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22311 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-29 15:57:19 +00:00
Andrew Lenharth
213e557cef 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22273 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-22 21:04:42 +00:00
Andrew Lenharth
558bc88a00 core changes for varargs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22254 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-18 18:34:52 +00:00
Chris Lattner
1ca85d567c Fix construction of ioport intrinsics, fixing X86/io.llx and io-port.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22026 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-14 13:56:55 +00:00
Chris Lattner
adf6c2a0cb Eliminate special purpose hacks for dynamic_stack_alloc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22015 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-14 07:29:57 +00:00
Chris Lattner
50381b6c41 LowerOperation takes a dag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22004 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-14 05:50:48 +00:00
Chris Lattner
a8217e3000 Align doubles on 8-byte boundaries if possible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21993 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 23:14:17 +00:00
Chris Lattner
adf6a965a3 Add an isTailCall flag to LowerCallTo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21958 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 18:50:42 +00:00
Chris Lattner
405ef9e28d Emit function entry code after lowering hte arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21931 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 07:33:32 +00:00
Chris Lattner
3aa7832c82 Allow targets to emit code into the entry block of each function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21930 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 07:23:21 +00:00
Chris Lattner
9092fa310c Pass calling convention to use into lower call to 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21900 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-12 19:56:57 +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
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
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
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
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
7ea0ade1b6 When hitting an unsupported intrinsic, actually print it 
Lower debug info to noops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21698 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-05 17:55:17 +00:00
Andrew Lenharth
691ef2ba06 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21676 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-03 17:19:30 +00:00
Chris Lattner
f76e7dc8d8 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21636 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-30 04:43:14 +00:00
Andrew Lenharth
2d86ea21dd 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21599 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-27 20:10:01 +00:00
Misha Brukman
dedf2bd5a3 Convert tabs to spaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21439 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-22 04:01:18 +00:00
Misha Brukman
edf128a7fa Remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 22:36:52 +00:00