Owen Anderson 5aa4f2a085 Add support to GVN for performing sret return slot optimization. This means that, if an sret function tail calls ... another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct return value. llvm-gcc does not emit this by default. Instead, it allocates space in the caller for the sret of the tail call and then uses memcpy to copy the result into the caller's sret parameter. This optimization detects and optimizes that case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47265 91177308-0d34-0410-b5e6-96231b3b80d8		2008-02-18 09:24:53 +00:00
..
ADCE	Ding dong, the DoesntAccessMemoryFns and	2007-11-23 19:30:27 +00:00
ArgumentPromotion	Don't drop function/call return attributes like 'nounwind'.	2008-02-01 20:37:16 +00:00
BlockPlacement	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
BranchFolding	Don't branch fold inline asm statements.	2007-10-19 21:09:55 +00:00
CodeExtractor	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
CondProp	Fix PR1575 and test/Transforms/CondProp/2007-08-01-InvalidRead.ll	2007-08-02 04:47:05 +00:00
ConstantMerge	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
ConstProp	Fix PR1816, by correcting the broken definition of APInt::countTrailingZeros.	2007-11-23 22:42:31 +00:00
DeadArgElim	Test case for varargs parameter attribute issue I just fixed.	2008-01-17 07:26:31 +00:00
DeadStoreElimination	Make DSE much more aggressive by performing DCE earlier. Update a testcase to reflect this increased aggressiveness.	2008-01-30 01:24:47 +00:00
DecomposeMultiDimRefs	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
GCSE	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
GlobalDCE	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
GlobalOpt	Remove any 'nest' parameter attributes if the function	2008-02-16 20:56:04 +00:00
GVN	Add support to GVN for performing sret return slot optimization. This means that, if an sret function tail calls	2008-02-18 09:24:53 +00:00
GVNPRE	For PR1553:	2007-07-19 23:13:04 +00:00
IndVarsSimplify	Add new SCEV, SCEVSMax. This allows LLVM to analyze do-while loops.	2007-11-25 22:41:31 +00:00
Inline	Revert r46393: readonly/readnone functions are no	2008-01-27 18:12:58 +00:00
InstCombine	optimize away stackrestore calls that have no intervening alloca or call.	2008-02-18 06:12:38 +00:00
IPConstantProp	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
LCSSA	Bunch of tests to check loop passes.	2007-07-31 08:04:17 +00:00
LICM	Update this testcase. The output needs to be disabled to pass.	2008-01-01 01:34:36 +00:00
LoopIndexSplit	If loop header is also loop exiting block then OrigPN is incoming value for B loop header.	2008-02-14 23:18:47 +00:00
LoopRotate	Ding dong, the DoesntAccessMemoryFns and	2007-11-23 19:30:27 +00:00
LoopSimplify	Fix PR1752 and LoopSimplify/2007-10-28-InvokeCrash.ll: terminators	2007-10-29 02:30:37 +00:00
LoopStrengthReduce	Convert tests using "| wc -l | grep ..." to use the count script.	2007-08-15 13:36:28 +00:00
LoopUnroll	Be more careful modifying the use_list while also iterating through it.	2008-01-27 18:35:00 +00:00
LoopUnswitch	Fix bug in updating dominance frontier after loop	2007-10-05 22:29:34 +00:00
LowerInvoke	Fix PR2029	2008-02-14 19:18:13 +00:00
LowerSetJmp	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
LowerSwitch	Convert tests using "| wc -l | grep ..." to use the count script.	2007-08-15 13:36:28 +00:00
Mem2Reg	Don't promote volatile loads/stores. This is needed (for example) to handle setjmp/longjmp properly.	2007-08-26 21:43:30 +00:00
PredicateSimplifier	Excuse me.	2007-09-20 00:57:00 +00:00
PruneEH	Make PruneEH update the nounwind/noreturn attributes	2007-12-10 19:09:40 +00:00
RaiseAllocations	Do not raise free() call that is called through invoke instruction.	2007-10-17 20:12:58 +00:00
Reassociate	Split up subtracts into add+negate if they have a reassociable use or operand	2008-02-17 20:51:26 +00:00
ScalarRepl	Fix a bug where scalarrepl would discard offset if type would match.	2008-01-30 00:39:15 +00:00
SCCP	Fix PR1938 by forcing the code that uses an undefined value to branch one	2008-01-28 00:32:30 +00:00
SimplifyCFG	don't hoist FP additions into unconditional adds + selects. This	2008-01-03 07:25:26 +00:00
SimplifyLibCalls	Convert tests using "grep -c ... | grep ..." to use the count script.	2007-08-15 13:49:33 +00:00
StripSymbols	Do not strip llvm.used values.	2008-01-16 03:33:05 +00:00
TailCallElim	remove obsolete testcase	2007-09-10 23:51:41 +00:00
TailDup	Change the x86 assembly output to use tab characters to separate the	2007-07-31 20:11:57 +00:00