462505fc5f
Completely rewrite libcall insertion by the legalizer, providing the
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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
01bd9d9911
*** empty log message ***
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llvm-svn: 25879
2006-02-01 19:05:15 +00:00
7e7f439f85
Fix some of the stuff in the PPC README file, and clean up legalization
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of the SELECT_CC, BR_CC, and BRTWOWAY_CC nodes.
llvm-svn: 25875
2006-02-01 07:19:44 +00:00
2443ab932d
Allow custom lowering of fabs. I forgot to check in this change which
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caused several test failures.
llvm-svn: 25852
2006-01-31 18:14:25 +00:00
e9721b2984
Only insert an AND when converting from BR_COND to BRCC if needed.
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llvm-svn: 25832
2006-01-31 05:04:52 +00:00
f263a23735
Fix a bug in my legalizer reworking that caused the X86 backend to not get
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a chance to custom legalize setcc, which broke a bunch of C++ Codes.
Testcase here: CodeGen/X86/2006-01-30-LongSetcc.ll
llvm-svn: 25821
2006-01-30 22:43:50 +00:00
d6f5ae4455
don't insert an and node if it isn't needed here, this can prevent folding
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of lowered target nodes.
llvm-svn: 25804
2006-01-30 04:22:28 +00:00
4d1ea71a31
Fix RET of promoted values on targets that custom expand RET to a target node.
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llvm-svn: 25794
2006-01-29 21:02:23 +00:00
2c748afd6c
cleanups to the ValueTypeActions interface
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llvm-svn: 25785
2006-01-29 08:42:06 +00:00
ccb4476c87
Remove some special case hacks for CALLSEQ_*, using UpdateNodeOperands
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instead.
llvm-svn: 25780
2006-01-29 07:58:15 +00:00
2f292789dc
Allow custom expansion of ConstantVec nodes. PPC will use this in the future.
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llvm-svn: 25774
2006-01-29 06:34:16 +00:00
758b0ac54b
Legalize ConstantFP into TargetConstantFP when the target allows. Implement
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custom expansion of ConstantFP nodes.
llvm-svn: 25772
2006-01-29 06:26:56 +00:00
678da98835
eliminate uses of SelectionDAG::getBR2Way_CC
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llvm-svn: 25767
2006-01-29 06:00:45 +00:00
d02b05473c
Use the new "UpdateNodeOperands" method to simplify LegalizeDAG and make it
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faster. This cuts about 120 lines of code out of the legalizer (mostly code
checking to see if operands have changed).
It also fixes an ugly performance issue, where the legalizer cloned the entire
graph after any change. Now the "UpdateNodeOperands" method gives it a chance
to reuse nodes if the operands of a node change but not its opcode or valuetypes.
This speeds up instruction selection time on kimwitu++ by about 8.2% with a
release build.
llvm-svn: 25746
2006-01-28 10:58:55 +00:00
eb63751499
minor tweaks
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llvm-svn: 25740
2006-01-28 08:31:04 +00:00
689bdcc9cf
move a bunch of code, no other change.
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llvm-svn: 25739
2006-01-28 08:25:58 +00:00
fcfda5a174
remove a couple more now-extraneous legalizeop's
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llvm-svn: 25738
2006-01-28 08:22:56 +00:00
364b89a784
fix a bug
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llvm-svn: 25737
2006-01-28 07:42:08 +00:00
9dcce6da8e
Several major changes:
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1. Pull out the expand cases for BSWAP and CT* into a separate function,
reducing the size of LegalizeOp.
2. Fix a bug where expand(bswap i64) was wrong when i64 is legal.
3. Changed LegalizeOp/PromoteOp so that the legalizer never needs to be
iterative. It now operates in a single pass over the nodes.
4. Simplify a LOT of code, with a net reduction of ~280 lines.
llvm-svn: 25736
2006-01-28 07:39:30 +00:00
fd4a7f76a9
Eliminate the need for ExpandOp to set 'needsanotheriteration', as it already
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relegalizes the stuff it returns.
Add the ability to custom expand ADD/SUB, so that targets don't need to deal
with ADD_PARTS/SUB_PARTS if they don't want.
Fix some obscure potential bugs and simplify code.
llvm-svn: 25732
2006-01-28 05:07:51 +00:00
10f677508f
Instead of making callers of ExpandLibCall legalize the result, make
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ExpandLibCall do it itself.
llvm-svn: 25731
2006-01-28 04:28:26 +00:00
a593acfe66
Eliminate the need to do another iteration of the legalizer after inserting
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a libcall.
llvm-svn: 25730
2006-01-28 04:23:12 +00:00
595ec734fc
Implement Promote for VAARG, and allow it to be custom promoted for people
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who don't want the default behavior (Alpha).
llvm-svn: 25726
2006-01-28 03:14:31 +00:00
fb16a62fba
Remove the ISD::CALL and ISD::TAILCALL nodes
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llvm-svn: 25721
2006-01-28 00:18:58 +00:00
476e67be14
initial selectiondag support for new INLINEASM node. Note that inline asms
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with outputs or inputs are not supported yet. :)
llvm-svn: 25664
2006-01-26 22:24:51 +00:00
e74795cd70
First part of bug 680:
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Remove TLI.LowerVA* and replace it with SDNodes that are lowered the same
way as everything else.
llvm-svn: 25606
2006-01-25 18:21:52 +00:00
f9a1e3aadc
Fix an infinite loop I caused by making sure to legalize the flag operand
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of CALLSEQ_* nodes
llvm-svn: 25582
2006-01-24 05:48:21 +00:00
763dfd7723
Fix Regression/CodeGen/SparcV8/2006-01-22-BitConvertLegalize.ll by making
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sure that the result of expanding a BIT_CONVERT node is itself legalized.
llvm-svn: 25538
2006-01-23 07:30:46 +00:00
44cab00045
Fix CodeGen/PowerPC/2006-01-20-ShiftPartsCrash.ll
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llvm-svn: 25496
2006-01-21 04:27:00 +00:00
15afe462a8
remove some unintentionally committed code
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llvm-svn: 25483
2006-01-20 18:40:10 +00:00
222ceabbee
If the target doesn't support f32 natively, insert the FP_EXTEND in target-indep
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code, so that the LowerReturn code doesn't have to handle it.
llvm-svn: 25482
2006-01-20 18:38:32 +00:00
13e8c9d6de
Another typo
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llvm-svn: 25440
2006-01-19 04:54:52 +00:00
7599b6e4af
was ignoring the legalized chain in this case, fixed SPASS on alpha
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llvm-svn: 25428
2006-01-18 23:19:08 +00:00
6f86a7db07
Bug fix: missing LegalizeOp() on newly created nodes.
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llvm-svn: 25401
2006-01-17 19:47:13 +00:00
b9966029fe
Adding basic support for Dwarf line number debug information.
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I promise to keep future commits smaller.
llvm-svn: 25396
2006-01-17 17:31:53 +00:00
2642a35f4c
Expand case for 64b Legalize, even though no one should end up using this
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(itanium supports bswap natively, alpha should custom lower it using the
VAX floating point swapload, ha ha).
llvm-svn: 25356
2006-01-16 07:59:13 +00:00
59b82f9848
Allow the target to specify 'expand' if they just require the amount to
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be subtracted from the stack pointer.
llvm-svn: 25331
2006-01-15 08:54:32 +00:00
2d59142613
Fix custom lowering of dynamic_stackalloc
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llvm-svn: 25329
2006-01-15 08:43:08 +00:00
02011c9a4f
Token chain results are not always the first or last result. Consider copyfromreg nodes, where they are the middle result (the flag result is last)
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llvm-svn: 25325
2006-01-14 22:41:46 +00:00
2fba8a3aaa
bswap implementation
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llvm-svn: 25312
2006-01-14 03:14:10 +00:00
ed9b3e1c0a
If a target specified a stack pointer with setStackPointerRegisterToSaveRestore,
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lower STACKSAVE/STACKRESTORE into a copy from/to that register.
llvm-svn: 25276
2006-01-13 17:48:44 +00:00
b32664583b
Compile llvm.stacksave/restore into STACKSAVE/STACKRESTORE nodes, and allow
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targets to custom expand them as they desire.
llvm-svn: 25273
2006-01-13 02:50:02 +00:00
7f4ec8274f
Allow custom lowering of DYNAMIC_STACKALLOC.
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llvm-svn: 25224
2006-01-11 22:14:47 +00:00
1b8121b227
Add bswap, rotl, and rotr nodes
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Add dag combiner code to recognize rotl, rotr
Add ppc code to match rotl
Targets should add rotl/rotr patterns if they have them
llvm-svn: 25222
2006-01-11 21:21:00 +00:00
fb5f46541c
silence a warning
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llvm-svn: 25184
2006-01-10 19:43:26 +00:00
90ba544826
Fix an exponential function in libcall insertion to not be exponential. :)
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llvm-svn: 25165
2006-01-09 23:21:49 +00:00
870e4f8e38
* Allow custom lowering of ADD_PARTS, SUB_PARTS, SHL_PARTS, SRA_PARTS,
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and SRL_PARTS.
* Fix a bug that caused *_PARTS to be custom lowered twice.
llvm-svn: 25157
2006-01-09 18:31:59 +00:00
fae8afb77f
Unbreak the build :(
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llvm-svn: 25124
2006-01-06 05:47:48 +00:00
f35b1c837f
Support for custom lowering of ISD::RET.
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llvm-svn: 25116
2006-01-06 00:41:43 +00:00
762e9ec06c
Added initial support for DEBUG_LABEL allowing debug specific labels to be
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inserted in the code.
llvm-svn: 25104
2006-01-05 01:25:28 +00:00
Chris Lattner