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22356863a0
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820 Commits

Author SHA1 Message Date
Chris Lattner
22356863a0 Pass all the flags to the asm printer, not just the # operands. 
llvm-svn: 26362
 2006-02-24 19:50:58 +00:00
Chris Lattner
f1e0c1f0a8 rename NumOps -> NumVals to avoid shadowing a NumOps var in an outer scope. 
Add support for addressing modes.

llvm-svn: 26361
 2006-02-24 19:18:20 +00:00
Chris Lattner
e00cf77ecb Refactor operand adding out to a new AddOperand method 
llvm-svn: 26358
 2006-02-24 18:54:03 +00:00
Jeff Cohen
9773f9c447 Get VC++ building again. 
llvm-svn: 26351
 2006-02-24 02:52:40 +00:00
Chris Lattner
6248339a24 Implement (most of) selection of inline asm memory operands. 
llvm-svn: 26350
 2006-02-24 02:13:54 +00:00
Chris Lattner
3f267c1683 Lower C_Memory operands. 
llvm-svn: 26346
 2006-02-24 01:11:24 +00:00
Chris Lattner
5a70e894d1 Fix an endianness problem on big-endian targets with expanded operands 
to inline asms.  Mark some methods const.

llvm-svn: 26334
 2006-02-23 20:06:57 +00:00
Chris Lattner
b4951fbe82 Record all of the expanded registers in the DAG and machine instr, fixing 
several bugs in inline asm expanded operands.

llvm-svn: 26332
 2006-02-23 19:21:04 +00:00
Chris Lattner
2fc133f091 This fixes a couple of problems with expansion 
llvm-svn: 26318
 2006-02-22 23:09:03 +00:00
Chris Lattner
d1886b8a4e Change a whole bunch of code to be built around RegsForValue instead of 
a single register number.  This fully implements promotion for inline asms,
expand is close but not quite right yet.

llvm-svn: 26316
 2006-02-22 22:37:12 +00:00
Chris Lattner
6bb2c3e9cd split register class handling from explicit physreg handling. 
llvm-svn: 26308
 2006-02-22 00:56:39 +00:00
Chris Lattner
b5b7cc99c4 Adjust to changes in getRegForInlineAsmConstraint prototype 
llvm-svn: 26306
 2006-02-21 23:12:12 +00:00
Chris Lattner
4b5130d957 Fix a problem Nate and Duraid reported where simplifying nodes can cause 
them to get ressurected, in which case, deleting the undead nodes is
unfriendly.

llvm-svn: 26291
 2006-02-20 06:51:04 +00:00
Chris Lattner
d5b8bfef65 Fix a problem on itanium with memset. The value to set has been promoted to 
i64 before this code, so zero_ext doesn't work.

llvm-svn: 26290
 2006-02-20 06:38:35 +00:00
Nate Begeman
bbcae2bf3d Add checks to make sure we don't create bogus extend nodes, and fix a bug 
where we were doing exactly that which was causing failures on x86 and
alpha.

llvm-svn: 26284
 2006-02-18 02:40:58 +00:00
Chris Lattner
bd36f029ef Fix a tricky issue in the SimplifyDemandedBits code where CombineTo wasn't 
exactly the API we wanted to call into.  This fixes the crash on crafty last
night.

llvm-svn: 26269
 2006-02-17 21:58:01 +00:00
Nate Begeman
7ebd8fd80d Clean up DemandedBitsAreZero interface 
Make more use of the new mask helpers in valuetypes.h
Combine (sra (srl x, c1), c1) -> sext_inreg if legal

llvm-svn: 26263
 2006-02-17 19:54:08 +00:00
Nate Begeman
a3a0a0340f Don't expand sdiv by power of two before legalize, since it will likely 
generate illegal nodes.

llvm-svn: 26261
 2006-02-17 07:26:20 +00:00
Nate Begeman
9c0ab71f4a kill ADD_PARTS & SUB_PARTS and replace them with fancy new ADDC, ADDE, SUBC 
and SUBE nodes that actually expose what's going on and allow for
significant simplifications in the targets.

llvm-svn: 26255
 2006-02-17 05:43:56 +00:00
Chris Lattner
6632b8ab04 Fix another miscompilation exposed by lencode, where we lowered i64->f32 
conversions to __floatdidf instead of __floatdisf on targets that support
f32 but not i64 (e.g. sparc).

llvm-svn: 26254
 2006-02-17 04:32:33 +00:00
Evan Cheng
a2433f32b4 Dumb bug. Code sees a memcpy from X+c so it increments src offset. But it 
turns out not to point to a constant string but it forgot change the offset
back.

llvm-svn: 26242
 2006-02-16 23:11:42 +00:00
Nate Begeman
0bc71999b9 Rework the SelectionDAG-based implementations of SimplifyDemandedBits 
and ComputeMaskedBits to match the new improved versions in instcombine.
Tested against all of multisource/benchmarks on ppc.

llvm-svn: 26238
 2006-02-16 21:11:51 +00:00
Evan Cheng
131901cbb8 If the false case is the current basic block, then this is a self loop. 
We do not want to emit "Loop: ... brcond Out; br Loop", as it adds an extra
instruction in the loop.  Instead, invert the condition and emit
"Loop: ... br!cond Loop; br Out.

Generalize the fix by moving it from PPCDAGToDAGISel to SelectionDAGLowering.

llvm-svn: 26231
 2006-02-16 08:27:56 +00:00
Chris Lattner
6f407a54c1 Lowering of sdiv X, pow2 was broken, this fixes it. This patch is written 
by Nate, I'm just committing it for him.

llvm-svn: 26230
 2006-02-16 08:02:36 +00:00
Evan Cheng
07063456aa Remove an unused function parameter. 
llvm-svn: 26221
 2006-02-15 22:12:35 +00:00
Evan Cheng
5c2ecfd29b Turn a memcpy from string constant into a series of stores of constant values. 
llvm-svn: 26219
 2006-02-15 21:59:04 +00:00
Jim Laskey
e51152ac31 Should not combine ISD::LOCATIONs until we have scheme to remove from 
MachineDebugInfo tables.

llvm-svn: 26216
 2006-02-15 19:34:44 +00:00
Evan Cheng
3f9201ab48 Lower memcpy with small constant size operand into a series of load / store 
ops.

llvm-svn: 26195
 2006-02-15 01:54:51 +00:00
Evan Cheng
6789a748ac Doh again! 
llvm-svn: 26188
 2006-02-14 23:05:54 +00:00
Evan Cheng
5a2a9d3896 Keep to < 80 cols 
llvm-svn: 26177
 2006-02-14 20:12:38 +00:00
Evan Cheng
8937c047b3 Missed a break so memcpy cases fell through to memset. Doh. 
llvm-svn: 26176
 2006-02-14 19:45:56 +00:00
Evan Cheng
57eebe8ab4 Fixed a build breakage. 
llvm-svn: 26175
 2006-02-14 09:11:59 +00:00
Evan Cheng
f6c74c0096 Rename maxStoresPerMemSet to maxStoresPerMemset, etc. 
llvm-svn: 26174
 2006-02-14 08:38:30 +00:00
Evan Cheng
0bfe83eb5b Expand memset dst, c, size to a series of stores if size falls below the 
target specific theshold, e.g. 16 for x86.

llvm-svn: 26171
 2006-02-14 08:22:34 +00:00
Chris Lattner
47f4f2c148 now that libcalls don't suck, we can remove this hack 
llvm-svn: 26164
 2006-02-14 05:39:35 +00:00
Chris Lattner
d3cfbeca5b Fix a latent bug in the call sequence handling stuff. Some targets (e.g. x86) 
create these nodes with flag results.  Remember that we legalized them.

llvm-svn: 26156
 2006-02-14 00:55:02 +00:00
Jim Laskey
fac853338f Rename to better reflect usage (current and planned.) 
llvm-svn: 26145
 2006-02-13 12:50:39 +00:00
Chris Lattner
b3fc3e3a90 Completely rewrite libcall insertion by the legalizer, providing the 
following handy-dandy properties:

1. it is always correct now
2. it is much faster than before
3. it is easier to understand

This implementation builds off of the recent simplifications of the
legalizer that made it single-pass instead of iterative.

This fixes JM/lencod, JM/ldecod, and
CodeGen/Generic/2006-02-12-InsertLibcall.ll (at least on PPC).

llvm-svn: 26144
 2006-02-13 09:18:02 +00:00
Jim Laskey
55467f611d Reorg for integration with gcc4. Old style debug info will not be passed though 
to SelIDAG.

llvm-svn: 26115
 2006-02-11 01:01:30 +00:00
Evan Cheng
7441e03b0b Added SelectionDAG::InsertISelMapEntry(). This is used to workaround the gcc 
problem where it inline the map insertion call too aggressively. Before this
change it was producing a frame size of 24k for Select_store(), now it's down
to 10k (by calling this method rather than calling the map insertion operator).

llvm-svn: 26094
 2006-02-09 22:11:03 +00:00
Evan Cheng
3486292b7d More changes to reduce frame size. 
Move all getTargetNode() out of SelectionDAG.h into SelectionDAG.cpp. This
prevents them from being inlined.
Change getTargetNode() so they return SDNode * instead of SDOperand to prevent
copying. It should also help compilation speed.

llvm-svn: 26083
 2006-02-09 07:15:23 +00:00
Chris Lattner
86d5e100d2 Make MachineConstantPool entries alignments explicit 
llvm-svn: 26071
 2006-02-09 02:23:13 +00:00
Chris Lattner
50f604c041 Compile this: 
xori r6, r2, 1
        rlwinm r6, r6, 0, 31, 31
        cmpwi cr0, r6, 0
        bne cr0, LBB1_3 ; endif

to this:

        rlwinm r6, r2, 0, 31, 31
        cmpwi cr0, r6, 0
        beq cr0, LBB1_3 ; endif

llvm-svn: 26047
 2006-02-08 02:13:15 +00:00
Nate Begeman
2fe9dfedf0 Back out previous commit, it isn't safe. 
llvm-svn: 26006
 2006-02-05 08:23:00 +00:00
Nate Begeman
c0e2bb488a fold c1 << (x + c2) into (c1 << c2) << x. fix a warning. 
llvm-svn: 26005
 2006-02-05 08:07:24 +00:00
Nate Begeman
c93c3d11d6 Handle urem by shifted powers of 2. 
llvm-svn: 26001
 2006-02-05 07:36:48 +00:00
Nate Begeman
0291708a49 handle combining A / (B << N) into A >>u (log2(B)+N) when B is a power of 2 
llvm-svn: 26000
 2006-02-05 07:20:23 +00:00
Evan Cheng
d46a7fc65a * Added SDNode::isOnlyUse(). 
* Fix hasNUsesOfValue(), it should be const.

llvm-svn: 25990
 2006-02-05 06:29:23 +00:00
Jeff Cohen
4f433dafa5 Fix VC++ warning. 
llvm-svn: 25975
 2006-02-04 16:20:31 +00:00
Evan Cheng
062ac6e46b Get rid of some memory leaks identified by Valgrind 
llvm-svn: 25960
 2006-02-04 06:49:00 +00:00