b5210efb31
Fix the conditions under which SCCP should examine insertvalue
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instructions. Thanks to Matthijs Kooijman for pointing this out!
llvm-svn: 52542
2008-06-20 16:39:44 +00:00
c456f9dfc6
80 column and trailing whitespace fixes.
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llvm-svn: 52539
2008-06-20 15:34:07 +00:00
0c50b953c5
Don't let DeadArgumentElimination attempt to update callers when the return
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type wasn't changed.
llvm-svn: 52538
2008-06-20 15:25:43 +00:00
9dc59b7666
Don't let DeadArgElimination change the return type ({} into void and {T}
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into T) when no return values are actually dead.
llvm-svn: 52537
2008-06-20 15:16:45 +00:00
013b6a9a42
Explicitely track if any arguments or return values were removed in
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DeadArgumentElimination and assert that the function type does not change if
nothing was changed. This should catch subtle changes in function type that are
not intended.
llvm-svn: 52536
2008-06-20 14:28:52 +00:00
e91aed6ce1
Remove debug output.
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llvm-svn: 52535
2008-06-20 14:03:35 +00:00
8d32dee428
Recommit r52459, rewriting of the dead argument elimination pass.
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This is a fixed version that no longer uses multimap::equal_range, which
resulted in a pointer invalidation problem.
Also, DAE::InspectedFunctions was not really necessary, so it got removed.
Lastly, this version no longer applies the extra arg hack on functions who did
not have any arguments to start with.
llvm-svn: 52532
2008-06-20 09:36:16 +00:00
78fbcafb53
Really disable PRE.
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llvm-svn: 52531
2008-06-20 08:59:13 +00:00
d53bd2da98
Fix an error handling redefinition of linkonce functions where the
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types differ. Patch by Nathan Keynes!
llvm-svn: 52527
2008-06-20 05:29:39 +00:00
f3ecd2d290
Fix PR2471, which is a bug involving an invalid promotion from a conditional load.
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llvm-svn: 52525
2008-06-20 05:12:56 +00:00
9f337549a7
Add C binding for ExecutionEngine::addGlobalMapping.
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llvm-svn: 52523
2008-06-20 02:16:11 +00:00
593a010c56
Teach ReturnInst lowering about aggregate return values.
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llvm-svn: 52522
2008-06-20 01:29:26 +00:00
1b3ea963f7
Change around the data structures used to store availability sets, resulting in a GVN+PRE that is faster that GVN alone was before.
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llvm-svn: 52521
2008-06-20 01:15:47 +00:00
041f9d03ff
Teach SCCP about insertvalue and extractvalue, and about
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propagating constants across aggregate return values when
insertvalue and extractvalue are used.
llvm-svn: 52520
2008-06-20 01:15:44 +00:00
3b18fd7b02
Teach InlineFunction how to differentiate between multiple-value
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return statements and aggregate returns so that it handles both
correctly.
llvm-svn: 52519
2008-06-20 01:03:44 +00:00
9598f930f3
Disable PRE for now. It seems to be breaking llvm-gcc bootstrapping.
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llvm-svn: 52518
2008-06-20 01:01:07 +00:00
44b2c57e2b
Fix the index calculations for the extractvalue lowering code.
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llvm-svn: 52517
2008-06-20 00:54:19 +00:00
c7a32fc8ca
Simplify the ComputeLinearIndex logic and fix a few bugs.
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llvm-svn: 52516
2008-06-20 00:53:00 +00:00
d87e813e41
Simplify this code. Thanks Chris!
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llvm-svn: 52514
2008-06-20 00:47:44 +00:00
be0429c558
ISD::UNDEF should be expanded recursively / iteratively.
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llvm-svn: 52508
2008-06-19 22:01:11 +00:00
e780d66657
Add a hidden -disable-pre flag for testing purposes. This should be removed
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once benchmarking is completed.
llvm-svn: 52506
2008-06-19 19:57:25 +00:00
fdf9f168b5
PRE requires that critical edges be split.
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llvm-svn: 52505
2008-06-19 19:54:19 +00:00
cd6fb1d0a8
Remove dead code causing a warning.
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llvm-svn: 52502
2008-06-19 18:00:44 +00:00
d6530872f3
Use the common API for adding instructions to basic blocks instead of
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using BasicBlock::getInstList.
llvm-svn: 52500
2008-06-19 17:53:32 +00:00
ff21db851d
Be sure to remove values from the value numbering table after we delete them.
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This fixes a failure on povray.
llvm-svn: 52499
2008-06-19 17:53:26 +00:00
ed2250990a
Use Instruction::moveBefore instead of manipulating the instruction list
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directly.
llvm-svn: 52498
2008-06-19 17:47:47 +00:00
9eea470fcf
Avoid using BasicBlock::getInstList directly in a few places.
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llvm-svn: 52497
2008-06-19 17:37:25 +00:00
45d3701fce
Revert support for insertvalue and extractvalue instructions for the moment.
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GVN expects that all inputs which to an instruction fall somewhere in the value
hierarchy, which isn't true for these.
llvm-svn: 52496
2008-06-19 17:25:39 +00:00
6f880690b8
Use the transferSuccessors helper function.
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llvm-svn: 52495
2008-06-19 17:22:29 +00:00
68f539e807
Delete dead code.
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llvm-svn: 52494
2008-06-19 17:18:39 +00:00
0c71732497
Use a CallSite to find the nth argument of a call/invoke instruction instead of
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using getOperand() directly. This makes things work with invoke instructions as
well.
llvm-svn: 52489
2008-06-19 08:53:24 +00:00
db356eea26
Fix some warnings reported by gcc-4.3. Hopefully
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this still compiles on windows - I can't test!
llvm-svn: 52488
2008-06-19 08:47:31 +00:00
849fa11f15
Missed a check.
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llvm-svn: 52487
2008-06-19 06:17:19 +00:00
8d66e98c92
Fix a bug with <8 x i16> shuffle lowering on X86 where parts of the
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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.
llvm-svn: 52486
2008-06-19 06:09:51 +00:00
3c4ccc830e
Revert my last patch, which was causing regression test failures.
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llvm-svn: 52485
2008-06-19 05:29:34 +00:00
0c8ef553f5
Coalesce copy from one register class to a sub register class. e.g. X86::MOV16to16_.
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llvm-svn: 52480
2008-06-19 01:39:21 +00:00
18e46d455b
Cosmetic changes.
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llvm-svn: 52479
2008-06-19 01:21:26 +00:00
2dbba985d5
Unneeded include's.
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llvm-svn: 52478
2008-06-19 01:21:02 +00:00
55bc848640
Minor spiller tweak to unfavor reload into load/store instructions.
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llvm-svn: 52477
2008-06-19 01:16:17 +00:00
80ef880b98
Insert empty slots into the instruction numbering in live intervals, so that we can more easily
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add new instructions.
llvm-svn: 52475
2008-06-19 00:10:49 +00:00
3ea800fbad
Add support for extractvalue and insertvalue instructions in GVN.
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llvm-svn: 52472
2008-06-18 21:59:00 +00:00
6a903bc601
Add local PRE to GVN. This only operates in cases where it would not increase code size, namely when the instantiated expression
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would only need to be created in one predecessor.
llvm-svn: 52471
2008-06-18 21:41:49 +00:00
55a8524241
Fix the source line debug information for the Windows platform.
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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.
llvm-svn: 52468
2008-06-18 19:27:37 +00:00
78119b4742
Fix the regressions on sext-misc.ll my patch yesterday caused.
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llvm-svn: 52466
2008-06-18 18:11:55 +00:00
9094cc957e
Revert r52459, which was causing an infinite loop or massive slowdown on MultiSource/Applications/SPASS, and possibly others as well.
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Please reapply once this is fixed.
llvm-svn: 52465
2008-06-18 17:32:16 +00:00
095ca74a7f
Move SCEVExpander::visitAddExpr out-of-line.
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llvm-svn: 52464
2008-06-18 16:37:11 +00:00
be928e3b21
Move LSR's private isZero function to a public SCEV member
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function, and make use of it in several places.
llvm-svn: 52463
2008-06-18 16:23:07 +00:00
964557fdf5
Rewrite the DeadArgumentElimination pass, to use a more explicit tracking of
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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.
llvm-svn: 52459
2008-06-18 11:12:53 +00:00
fd17357643
Reapply r52397 (make IPConstProp promote returned arguments), but fixed this
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time. Sorry for the trouble!
This time, also add a testcase, which I should have done in the first place...
llvm-svn: 52455
2008-06-18 08:30:37 +00:00
1d260dfa3b
XOR32rr, etc. are not AsCheapAsMove, but MOV32ri, etc. are.
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llvm-svn: 52454
2008-06-18 08:13:07 +00:00
Dan Gohman