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Commit Graph

301 Commits

Author SHA1 Message Date
Nate Begeman
e74a2db0f0 *** empty log message ***
llvm-svn: 25879
2006-02-01 19:05:15 +00:00
Nate Begeman
0be60963bd Fix some of the stuff in the PPC README file, and clean up legalization
of the SELECT_CC, BR_CC, and BRTWOWAY_CC nodes.

llvm-svn: 25875
2006-02-01 07:19:44 +00:00
Evan Cheng
80944be4e7 Allow custom lowering of fabs. I forgot to check in this change which
caused several test failures.

llvm-svn: 25852
2006-01-31 18:14:25 +00:00
Chris Lattner
d33e8efd56 Only insert an AND when converting from BR_COND to BRCC if needed.
llvm-svn: 25832
2006-01-31 05:04:52 +00:00
Chris Lattner
e24c6ef1f9 Fix a bug in my legalizer reworking that caused the X86 backend to not get
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
Chris Lattner
4ba0e38a7a don't insert an and node if it isn't needed here, this can prevent folding
of lowered target nodes.

llvm-svn: 25804
2006-01-30 04:22:28 +00:00
Chris Lattner
414a73d6f6 Fix RET of promoted values on targets that custom expand RET to a target node.
llvm-svn: 25794
2006-01-29 21:02:23 +00:00
Chris Lattner
497157db4d cleanups to the ValueTypeActions interface
llvm-svn: 25785
2006-01-29 08:42:06 +00:00
Chris Lattner
3cddcf86e0 Remove some special case hacks for CALLSEQ_*, using UpdateNodeOperands
instead.

llvm-svn: 25780
2006-01-29 07:58:15 +00:00
Chris Lattner
94e9677374 Allow custom expansion of ConstantVec nodes. PPC will use this in the future.
llvm-svn: 25774
2006-01-29 06:34:16 +00:00
Chris Lattner
3f97b9cfa3 Legalize ConstantFP into TargetConstantFP when the target allows. Implement
custom expansion of ConstantFP nodes.

llvm-svn: 25772
2006-01-29 06:26:56 +00:00
Chris Lattner
82b23c2f5c eliminate uses of SelectionDAG::getBR2Way_CC
llvm-svn: 25767
2006-01-29 06:00:45 +00:00
Chris Lattner
40973347bf Use the new "UpdateNodeOperands" method to simplify LegalizeDAG and make it
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
Chris Lattner
99bdf26410 minor tweaks
llvm-svn: 25740
2006-01-28 08:31:04 +00:00
Chris Lattner
94ab3cee71 move a bunch of code, no other change.
llvm-svn: 25739
2006-01-28 08:25:58 +00:00
Chris Lattner
9633d61b5b remove a couple more now-extraneous legalizeop's
llvm-svn: 25738
2006-01-28 08:22:56 +00:00
Chris Lattner
4bc3abc3d0 fix a bug
llvm-svn: 25737
2006-01-28 07:42:08 +00:00
Chris Lattner
8eed1b6bda Several major changes:
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
Chris Lattner
84086fd689 Eliminate the need for ExpandOp to set 'needsanotheriteration', as it already
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
Chris Lattner
3b5a984065 Instead of making callers of ExpandLibCall legalize the result, make
ExpandLibCall do it itself.

llvm-svn: 25731
2006-01-28 04:28:26 +00:00
Chris Lattner
045a778e63 Eliminate the need to do another iteration of the legalizer after inserting
a libcall.

llvm-svn: 25730
2006-01-28 04:23:12 +00:00
Nate Begeman
87c2c0e66b Implement Promote for VAARG, and allow it to be custom promoted for people
who don't want the default behavior (Alpha).

llvm-svn: 25726
2006-01-28 03:14:31 +00:00
Chris Lattner
e7428f436a Remove the ISD::CALL and ISD::TAILCALL nodes
llvm-svn: 25721
2006-01-28 00:18:58 +00:00
Chris Lattner
b2771c7fcb initial selectiondag support for new INLINEASM node. Note that inline asms
with outputs or inputs are not supported yet. :)

llvm-svn: 25664
2006-01-26 22:24:51 +00:00
Nate Begeman
c29fac7fce First part of bug 680:
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
Chris Lattner
cfb7a75ce9 Fix an infinite loop I caused by making sure to legalize the flag operand
of CALLSEQ_* nodes

llvm-svn: 25582
2006-01-24 05:48:21 +00:00
Chris Lattner
3b0a29a694 Fix Regression/CodeGen/SparcV8/2006-01-22-BitConvertLegalize.ll by making
sure that the result of expanding a BIT_CONVERT node is itself legalized.

llvm-svn: 25538
2006-01-23 07:30:46 +00:00
Chris Lattner
9f233fa260 Fix CodeGen/PowerPC/2006-01-20-ShiftPartsCrash.ll
llvm-svn: 25496
2006-01-21 04:27:00 +00:00
Chris Lattner
a348dc9195 remove some unintentionally committed code
llvm-svn: 25483
2006-01-20 18:40:10 +00:00
Chris Lattner
737a8dab41 If the target doesn't support f32 natively, insert the FP_EXTEND in target-indep
code, so that the LowerReturn code doesn't have to handle it.

llvm-svn: 25482
2006-01-20 18:38:32 +00:00
Evan Cheng
3f6b496700 Another typo
llvm-svn: 25440
2006-01-19 04:54:52 +00:00
Andrew Lenharth
c7a7422412 was ignoring the legalized chain in this case, fixed SPASS on alpha
llvm-svn: 25428
2006-01-18 23:19:08 +00:00
Evan Cheng
b456305355 Bug fix: missing LegalizeOp() on newly created nodes.
llvm-svn: 25401
2006-01-17 19:47:13 +00:00
Jim Laskey
0c4202b0ba Adding basic support for Dwarf line number debug information.
I promise to keep future commits smaller.

llvm-svn: 25396
2006-01-17 17:31:53 +00:00
Nate Begeman
61d6a364ed Expand case for 64b Legalize, even though no one should end up using this
(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
Chris Lattner
4b3181512b Allow the target to specify 'expand' if they just require the amount to
be subtracted from the stack pointer.

llvm-svn: 25331
2006-01-15 08:54:32 +00:00
Chris Lattner
acf02c3510 Fix custom lowering of dynamic_stackalloc
llvm-svn: 25329
2006-01-15 08:43:08 +00:00
Chris Lattner
e92e4a4342 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)
llvm-svn: 25325
2006-01-14 22:41:46 +00:00
Nate Begeman
85b2dc0c4e bswap implementation
llvm-svn: 25312
2006-01-14 03:14:10 +00:00
Chris Lattner
91b83a2448 If a target specified a stack pointer with setStackPointerRegisterToSaveRestore,
lower STACKSAVE/STACKRESTORE into a copy from/to that register.

llvm-svn: 25276
2006-01-13 17:48:44 +00:00
Chris Lattner
4107b4d7ee Compile llvm.stacksave/restore into STACKSAVE/STACKRESTORE nodes, and allow
targets to custom expand them as they desire.

llvm-svn: 25273
2006-01-13 02:50:02 +00:00
Evan Cheng
c2241561ae Allow custom lowering of DYNAMIC_STACKALLOC.
llvm-svn: 25224
2006-01-11 22:14:47 +00:00
Nate Begeman
cff96008ac Add bswap, rotl, and rotr nodes
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
Chris Lattner
da0089a5c7 silence a warning
llvm-svn: 25184
2006-01-10 19:43:26 +00:00
Chris Lattner
8026872e44 Fix an exponential function in libcall insertion to not be exponential. :)
llvm-svn: 25165
2006-01-09 23:21:49 +00:00
Evan Cheng
a8064e0723 * Allow custom lowering of ADD_PARTS, SUB_PARTS, SHL_PARTS, SRA_PARTS,
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
Chris Lattner
ae1bace70a Unbreak the build :(
llvm-svn: 25124
2006-01-06 05:47:48 +00:00
Evan Cheng
133170cb5c Support for custom lowering of ISD::RET.
llvm-svn: 25116
2006-01-06 00:41:43 +00:00
Jim Laskey
5eddaee9f3 Added initial support for DEBUG_LABEL allowing debug specific labels to be
inserted in the code.

llvm-svn: 25104
2006-01-05 01:25:28 +00:00
Jim Laskey
61138e28ff Applied some recommend changes from sabre. The dominate one beginning "let the
pass manager do it's thing."  Fixes crash when compiling -g files and suppresses
dwarf statements if no debug info is present.

llvm-svn: 25100
2006-01-04 22:28:25 +00:00