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10848 Commits

Author SHA1 Message Date
Nate Begeman
c8e27db5c5 Remove option to make SetCC illegal on PowerPC after long discussion with 
Chris.  This will be accomplished through correctly modeling CR's and
subregs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23056 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 20:01:10 +00:00
Chris Lattner
43247a157b Don't auto-cse nodes that return flags 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23055 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 19:12:10 +00:00
Chris Lattner
8064e8fbf4 add printer support for flag operands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23054 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 17:59:23 +00:00
Chris Lattner
9d338cf3a3 simplify the code a bit using isOperationLegal 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23053 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 17:54:58 +00:00
Chris Lattner
8784a23075 Add support for sdiv by 2^k and -2^k. Producing code like: 
_test:
        srawi r2, r3, 2
        addze r3, r2
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23052 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 17:50:06 +00:00
Chris Lattner
ee84f11577 fit in 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23051 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 17:49:31 +00:00
Chris Lattner
376d54f9b6 Add support for flag operands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23050 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 17:48:54 +00:00
Chris Lattner
a64d4cddf5 add an enum value 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23048 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 17:07:09 +00:00
Chris Lattner
34e17052a7 Implement support for taking the address of constant pool indices, which 
is used by the int -> FP code among other things.  This gets
2005-05-12-Int64ToFP past that failure, to dying on lack of support for add_parts


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23042 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 05:04:11 +00:00
Chris Lattner
4025a9c2cc ADd support for TargetConstantPool nodes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23041 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 05:03:06 +00:00
Chris Lattner
2fe76e58eb Add support for FP constants, fixing UnitTests/2004-02-02-NegativeZero 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23038 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 04:47:18 +00:00
Chris Lattner
e28e40a273 Fully implement frame index, so that we can pass the address of alloca's 
around to functions and stuff


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23036 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 00:45:43 +00:00
Chris Lattner
afb2dd43de add a new TargetFrameIndex node 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23035 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 00:43:01 +00:00
Chris Lattner
89532c7db0 implement unconditional branches, fixing UnitTests/2003-05-02-DependentPHI.c 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23034 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 00:29:58 +00:00
Chris Lattner
fdf8366ecc LFS/STFS load and store FP values, not integer ones. This change allows us 
to codegen this: float foo() { return 1.245; }

into this:

_foo:
        lis r2, ha16(.CPI_foo_0)
        lfs f1, lo16(.CPI_foo_0)(r2)
        blr

instead of this:

_foo:
        lis r2, ha16(.CPI_foo_0)
        lfs r2, lo16(.CPI_foo_0)(r2)   <-- ouch
        or f1, r2, r2                  <-- ouch
        blr

with the dag isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23033 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 00:26:22 +00:00
Chris Lattner
ed7956bfe4 Fix a broken assertion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23032 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 00:19:12 +00:00
Chris Lattner
7cad4f2089 Fix a warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23031 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 00:05:15 +00:00
Chris Lattner
4a20997057 fix a warning in optimized build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23030 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 00:03:21 +00:00
Chris Lattner
e0a7f83049 Fix some warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23029 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-25 00:00:26 +00:00
Chris Lattner
2b54400f08 Split IMPLICIT_DEF into IMPLICIT_DEF_GPR and IMPLICIT_DEF_FP, so that the 
instructions take a consistent reg class.  Implement ISD::UNDEF in the dag->dag
selector to generate this, fixing UnitTests/2003-07-06-IntOverflow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23028 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 23:08:16 +00:00
Chris Lattner
7651fa4a7e add a method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23027 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 23:00:29 +00:00
Chris Lattner
fb0c964364 implement support for calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23026 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 22:45:17 +00:00
Chris Lattner
7b2880c4cd Add ReplaceAllUsesWith that can take a vector of replacement values. 
Add some foldings to hopefully help the illegal setcc issue, and move some code around.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23025 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 22:44:39 +00:00
Chris Lattner
86fac6b00a Remove some dead cases. 
Emit the indcall sequence as:

mtctr inreg
mr R12, inreg
btctr

If inreg and R12 aren't coallesced, this reduces the odds of having the mtctr
and btctr in the same dispatch group.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23023 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 22:21:47 +00:00
Chris Lattner
14b392af1d Add support for external symbols, and support for variable arity instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23022 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 22:02:41 +00:00
Chris Lattner
e39db07713 Fix pasto that prevented VT ndoes from showing up in -view-isel-dags correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23021 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 18:30:00 +00:00
Chris Lattner
a3c4454c5f add an idea 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23020 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 18:15:24 +00:00
Chris Lattner
ac83b0301e Fix Regression/Transforms/Reassociate/2005-08-24-Crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23019 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 17:55:32 +00:00
Chris Lattner
53249865ec Transform floor((double)FLT) -> (double)floorf(FLT), implementing 
Regression/Transforms/SimplifyLibCalls/floor.ll.  This triggers 19 times in
177.mesa.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23017 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 17:22:17 +00:00
Chris Lattner
ab466d769a floor/ceil don't read/write memory. This allows gcse to eliminate 6 calls 
in mesa.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23015 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 16:58:56 +00:00
Chris Lattner
1d6373c1af teach selection dag mask tracking about the fact that select_cc operates like 
select.  Also teach it that the bit count instructions can only set the low bits
of the result, depending on the size of the input.

This allows us to compile this:

int %eq0(int %a) {
        %tmp.1 = seteq int %a, 0                ; <bool> [#uses=1]
        %tmp.2 = cast bool %tmp.1 to int                ; <int> [#uses=1]
        ret int %tmp.2
}

To this:

_eq0:
        cntlzw r2, r3
        srwi r3, r2, 5
        blr

instead of this:

_eq0:
        cntlzw r2, r3
        rlwinm r3, r2, 27, 31, 31
        blr

when setcc is marked illegal on ppc (which restores parity to non-illegal
setcc).  Thanks to Nate for pointing this out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23013 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 16:46:55 +00:00
Chris Lattner
c9c60f6429 Start using isOperationLegal and isTypeLegal to simplify the code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23012 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 16:35:28 +00:00
Chris Lattner
9ed62c16f2 Adjust to new interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23010 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 16:34:12 +00:00
Reid Spencer
0a262ba7c3 For PR616: 
These patches make threading optional in LLVM. The configuration scripts are now
modified to accept a --disable-threads switch. If this is used, the Mutex class
will be implemented with all functions as no-op. Furthermore, linking against
libpthread will not be done. Finally, the ParallelJIT example needs libpthread
so its makefile was changed to always add -lpthread to the link line.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23003 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 10:07:20 +00:00
Nate Begeman
6ef4949a0b Whoops, fix a thinko. All cases except SETNE are now handled by the 
target independent code in SelectionDAG.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23002 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 05:06:48 +00:00
Nate Begeman
c6b0717a6c Remove unused statistic 
Prefer 'neg X' to 'subfic 0, X' since neg does not set XER[CA]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23001 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 05:03:20 +00:00
Nate Begeman
4b46fc094d Add the "ppc specific" setcc-equivalent select_cc cases 
Prefer 'neg X' to 'subfic 0, X' since it does not set XER[CA]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23000 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 04:59:21 +00:00
Nate Begeman
cebd433d8d Teach SelectionDAG how to simplify a few more setcc-equivalent select_cc 
nodes so that backends don't have to.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22999 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 04:57:57 +00:00
Chris Lattner
a2590c5b3e Add callseq_begin/end support 
Call stil not supported yet


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22998 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 00:47:15 +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
Nate Begeman
0750a40a4f Fix optimization of select_cc seteq X, 0, 1, 0 -> srl (ctlz X), log2 X size 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22995 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 00:21:28 +00:00
Chris Lattner
657b4d1ac6 Implement LiveVariables.h change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22994 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-24 00:09:33 +00:00
Chris Lattner
44b94c2185 adjust to new live variables interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22992 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 23:42:17 +00:00
Chris Lattner
d177579860 Adjust to new livevars interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22991 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 23:41:14 +00:00
Chris Lattner
ab4b66d4c2 Simplify this code by using higher-level LiveVariables methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22989 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 22:51:41 +00:00
Chris Lattner
76eb08bcda Simplify this code by using LiveVariables::KillsRegister 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22988 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 22:49:55 +00:00
Chris Lattner
b980578b41 Keep track of which registers are related to which other registers. 
Use this information to avoid doing expensive interval intersections for
registers that could not possible be interesting.  This speeds up linscan
on ia64 compiling kc++ in release mode from taking 7.82s to 4.8s(!), total
itanium llc time on this program is 27.3s now.  This marginally speeds up
PPC and X86, but they appear to be limited by other parts of linscan, not
this code.

On this program, on itanium, live intervals now takes 41% of llc time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22986 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 22:27:31 +00:00
Chris Lattner
57da25231a Fix PR618 and Regression/CodeGen/CBackend/2005-08-23-Fmod.ll by not emitting 
x%y for 'rem' on fp values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22984 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 20:22:50 +00:00
Chris Lattner
424dcbdb3b add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22982 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 06:27:59 +00:00
Nate Begeman
8ca5693c51 Ack, typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22981 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-23 05:45:10 +00:00