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23509 Commits

Author SHA1 Message Date
Dan Gohman
09ef00f979 Simplify this code. Thanks Chris! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52514 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 00:47:44 +00:00
Evan Cheng
c8af52c898 ISD::UNDEF should be expanded recursively / iteratively. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52508 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 22:01:11 +00:00
Owen Anderson
aa0b63422a Add a hidden -disable-pre flag for testing purposes. This should be removed 
once benchmarking is completed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52506 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 19:57:25 +00:00
Owen Anderson
5c274eebc6 PRE requires that critical edges be split. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52505 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 19:54:19 +00:00
Bill Wendling
ac151da204 Remove dead code causing a warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52502 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 18:00:44 +00:00
Dan Gohman
52d36e6f87 Use the common API for adding instructions to basic blocks instead of 
using BasicBlock::getInstList.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52500 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:53:32 +00:00
Owen Anderson
9da52dce89 Be sure to remove values from the value numbering table after we delete them. 
This fixes a failure on povray.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52499 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:53:26 +00:00
Dan Gohman
d02d917c72 Use Instruction::moveBefore instead of manipulating the instruction list 
directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52498 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:47:47 +00:00
Dan Gohman
610c0e2b40 Avoid using BasicBlock::getInstList directly in a few places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52497 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:37:25 +00:00
Owen Anderson
3cd8eb314a Revert support for insertvalue and extractvalue instructions for the moment. 
GVN expects that all inputs which to an instruction fall somewhere in the value
hierarchy, which isn't true for these.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52496 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:25:39 +00:00
Dan Gohman
04478e56f7 Use the transferSuccessors helper function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52495 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:22:29 +00:00
Dan Gohman
f3dc70092c Delete dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52494 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:18:39 +00:00
Matthijs Kooijman
f0da2039d1 Use a CallSite to find the nth argument of a call/invoke instruction instead of 
using getOperand() directly. This makes things work with invoke instructions as
well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52489 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 08:53:24 +00:00
Duncan Sands
9954c76f2c Fix some warnings reported by gcc-4.3. Hopefully 
this still compiles on windows - I can't test!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52488 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 08:47:31 +00:00
Evan Cheng
32a3ac7911 Missed a check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52487 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 06:17:19 +00:00
Eli Friedman
2c8e64d3e4 Fix a bug with <8 x i16> shuffle lowering on X86 where parts of the 
shuffle could be skipped.  The check is invalid because the loop index i 
doesn't correspond to the element actually inserted. The correct check is
already done a few lines earlier, for whether the element is already in 
the right spot, so this shouldn't have any effect on the codegen for 
code that was already correct.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52486 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 06:09:51 +00:00
Owen Anderson
29b039976f Revert my last patch, which was causing regression test failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52485 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 05:29:34 +00:00
Evan Cheng
e00f5de361 Coalesce copy from one register class to a sub register class. e.g. X86::MOV16to16_. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52480 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 01:39:21 +00:00
Evan Cheng
1b38ec83f0 Cosmetic changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52479 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 01:21:26 +00:00
Evan Cheng
082e7c12a1 Unneeded include's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52478 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 01:21:02 +00:00
Evan Cheng
bdf34bc12b Minor spiller tweak to unfavor reload into load/store instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52477 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 01:16:17 +00:00
Owen Anderson
6c5e561668 Insert empty slots into the instruction numbering in live intervals, so that we can more easily 
add new instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52475 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 00:10:49 +00:00
Owen Anderson
d34ac6e782 Add support for extractvalue and insertvalue instructions in GVN. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52472 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 21:59:00 +00:00
Owen Anderson
b230372437 Add local PRE to GVN. This only operates in cases where it would not increase code size, namely when the instantiated expression 
would only need to be created in one predecessor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52471 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 21:41:49 +00:00
Argyrios Kyrtzidis
f7acf8f288 Fix the source line debug information for the Windows platform. 
According to DWARF-2 specification, the line information is provided through an offset in the .debug_line section.
Replace the label reference that is used with a section offset.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52468 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 19:27:37 +00:00
Chris Lattner
6c3bfba06e Fix the regressions on sext-misc.ll my patch yesterday caused. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52466 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 18:11:55 +00:00
Owen Anderson
bb3761c9e5 Revert r52459, which was causing an infinite loop or massive slowdown on MultiSource/Applications/SPASS, and possibly others as well. 
Please reapply once this is fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52465 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 17:32:16 +00:00
Dan Gohman
e24fa64d52 Move SCEVExpander::visitAddExpr out-of-line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52464 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 16:37:11 +00:00
Dan Gohman
cfeb6a4506 Move LSR's private isZero function to a public SCEV member 
function, and make use of it in several places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52463 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 16:23:07 +00:00
Matthijs Kooijman
ca85d65277 Rewrite the DeadArgumentElimination pass, to use a more explicit tracking of 
dependencies between return values and/or arguments. Also make the handling of
arguments and return values the same.

The pass now looks properly inside returned structs, but only at the first                                                                                     
level (ie, not inside nested structs).

Also add a testcase for testing various variations of (multiple) dead rerturn
values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52459 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 11:12:53 +00:00
Matthijs Kooijman
c2afe89019 Reapply r52397 (make IPConstProp promote returned arguments), but fixed this 
time. Sorry for the trouble!

This time, also add a testcase, which I should have done in the first place...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52455 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 08:30:37 +00:00
Evan Cheng
359e9371b9 XOR32rr, etc. are not AsCheapAsMove, but MOV32ri, etc. are. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52454 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 08:13:07 +00:00
Matthijs Kooijman
8b0fcf38ef Reapply r52396, it was unrelated to the breakage (that was caused by r52397, my 
commit after this).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52453 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 08:09:27 +00:00
Evan Cheng
7543e58a77 Complete support for two-address pass rematerialization. Now *almost* always a win. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52452 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 07:49:14 +00:00
Evan Cheng
625986afea Cosmetic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52450 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 07:47:28 +00:00
Chris Lattner
0521e3cdc1 implement some simple bswap optimizations, rdar://5992453 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52442 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 04:33:20 +00:00
Chris Lattner
8114b718c9 make truncate/sext elimination capable of changing phi's. This 
implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52440 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 04:00:49 +00:00
Evan Cheng
fab8387384 Unbreak DECLARE isel in pic mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52439 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 02:48:27 +00:00
Devang Patel
64cd658223 Preserve dominance frontier while trivially unswitching loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52438 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 02:16:38 +00:00
Dan Gohman
44f6a2c951 Auto-upgrade code for multiple-value return statements. This code 
isn't actually called yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52435 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 23:38:43 +00:00
Dan Gohman
80b9626ee3 In InsertValueInst's copy ctor, actually copy the operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52434 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 23:25:49 +00:00
Owen Anderson
2960ed4b85 We don't want to find dependencies within the same block in this case. It leads to incorrect results because 
we're detecting something at or after the call we're querying on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52433 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 22:27:06 +00:00
Dan Gohman
b79bf1966d Implement the ExtractValueInst::getIndexedType that accepts one 
index value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52432 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 21:07:55 +00:00
Evan Cheng
f26e8557de Live-through live interval is [mbb start, mbb end+1]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52431 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 20:13:36 +00:00
Evan Cheng
739583be56 When extending a liveinterval by commuting, don't throw away the live ranges that are not affected. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52430 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 20:11:16 +00:00
Ted Kremenek
8d6a58c5d5 Consistently set "Buckets[NumBuckets] = reinterpret_cast<void*>(-1)" throughout FoldingSet.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52425 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 19:12:43 +00:00
Owen Anderson
26bb50ab48 Add an insertBefore method for attaching previously unattached instructions, 
such as those created by clone(), to a basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52424 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 18:29:27 +00:00
Evan Cheng
95350b9cd2 It's not safe to remove SUBREG_TO_REG that looks like identity copies, e.g. movl %eax, %eax on x86-64 actually does a zero-extend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52421 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 17:59:16 +00:00
Anton Korobeynikov
0b725f17e0 Add one more 'magic' define :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52420 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 17:57:43 +00:00
Anton Korobeynikov
7a17ff7b3f Unbreak non-PPC builds 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52419 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 17:38:31 +00:00