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Author SHA1 Message Date
Dan Gohman
ab8ec0a26c Teach ReturnInst lowering about aggregate return values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52522 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:29:26 +00:00
Owen Anderson
6fafe847b2 Change around the data structures used to store availability sets, resulting in a GVN+PRE that is faster that GVN alone was before. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52521 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:15:47 +00:00
Dan Gohman
c4b65ea56b Teach SCCP about insertvalue and extractvalue, and about 
propagating constants across aggregate return values when
insertvalue and extractvalue are used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52520 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:15:44 +00:00
Dan Gohman
2c31750cd0 Teach InlineFunction how to differentiate between multiple-value 
return statements and aggregate returns so that it handles both
correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52519 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:03:44 +00:00
Evan Cheng
88d11c03cd Disable PRE for now. It seems to be breaking llvm-gcc bootstrapping. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52518 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:01:07 +00:00
Dan Gohman
dded0fd398 Fix the index calculations for the extractvalue lowering code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52517 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 00:54:19 +00:00
Dan Gohman
8f36f6d117 Simplify the ComputeLinearIndex logic and fix a few bugs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52516 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 00:53:00 +00:00
Dan Gohman
65c6795af4 It's invalid to take the one-past-the-end address of a non-array 
object.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52515 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 00:49:21 +00:00
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
Owen Anderson
5678d6e8d3 Add an idx_iterator to the insertvalue and extractvalue instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52493 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:15:57 +00:00
Dan Gohman
e6807551cb The inline keyword goes before the return type. This fixes a compiler warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52492 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 16:16:06 +00:00
Matthijs Kooijman
3d2ff5f939 Modify some ipconstprop tests to also test with invokes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52491 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 09:27:44 +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
0d46d753f9 New test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52483 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 01:50:24 +00:00
Evan Cheng
72d255aff9 This also got better (55 - 51 instructions). But doing one more re-materialization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52482 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 01:50:13 +00:00
Evan Cheng
81d39e63e2 This got better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52481 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 01:46:43 +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
93d606a9b3 Remove this test until the corresponding patch is reapplied because it's causing make check to crash for some people. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52473 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 22:37:31 +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
Bill Wendling
e424254897 Refactor the way to get a string containing the features of the target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52470 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 21:39:02 +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
Dan Gohman
0066db626f Fix a missing comma spotted by Bram Geron. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52467 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 18:42:13 +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
Gabor Greif
a9c0f2b03f fix validator warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 14:05:31 +00:00
Gabor Greif
dfed118f22 prettify, no semantic changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52460 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 13:44:57 +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