Chris Lattner 199ba42cbf Implement a new optimization in the inliner: if inlining multiple ... calls into a function and if the calls bring in arrays, try to merge them together to reduce stack size. For example, in the testcase we'd previously end up with 4 allocas, now we end up with 2 allocas. As described in the comments, this is not really the ideal solution to this problem, but it is surprisingly effective. For example, on 176.gcc, we end up eliminating 67 arrays at "gccas" time and another 24 at "llvm-ld" time. One piece of concern that I didn't look into: at -O0 -g with forced inlining this will almost certainly result in worse debug info. I think this is acceptable though given that this is a case of "debugging optimized code", and we don't want debug info to prevent the optimizer from doing things anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80215 91177308-0d34-0410-b5e6-96231b3b80d8		2009-08-27 06:29:33 +00:00
..
ADCE	Allow readonly functions to unwind exceptions. Teach	2009-05-06 06:49:50 +00:00
ArgumentPromotion	Fix typo.	2009-04-23 04:24:19 +00:00
BlockPlacement
BranchFolding
CodeExtractor
CodeGenPrepare
CondProp	Optimize conditional branch on i1 phis with non-constant inputs.	2009-04-14 23:40:03 +00:00
ConstantMerge
ConstProp	Remove the vicmp and vfcmp instructions. Because we never had a release with	2009-07-08 03:04:38 +00:00
DeadArgElim	aha, DAE does have to think about PHI nodes. Many thanks to "Dr Evil" (aka Duncan)	2009-03-18 16:48:45 +00:00
DeadStoreElimination	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
FunctionAttrs	Revert r70876 and add a testcase (@c7) showing the problem:	2009-05-07 18:08:34 +00:00
GlobalDCE	Add a new "available_externally" linkage type. This is intended	2009-04-13 05:44:34 +00:00
GlobalOpt	Fix a bug that caused globalopt to miscompile tramp3d: don't miss	2009-08-18 14:58:19 +00:00
GVN	Move the re-sort of invalidated NonLocalPointerDeps cache earlier	2009-07-13 17:14:23 +00:00
GVNPRE	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
IndMemRem	Actually run the test in this directory.	2009-01-25 08:05:07 +00:00
IndVarSimplify	Special-case static allocas in IndVarSimplify's loop invariant	2009-08-25 17:42:10 +00:00
Inline	Implement a new optimization in the inliner: if inlining multiple	2009-08-27 06:29:33 +00:00
InstCombine	Remove obsolete -f flags.	2009-08-25 15:38:29 +00:00
Internalize
IPConstantProp
JumpThreading	make jump threading handle lexically identical compare instructions	2009-06-19 16:27:56 +00:00
LCSSA	Fix LCSSA to avoid emitting a PHI node for the unwind destination of	2009-06-26 00:31:13 +00:00
LICM	Before deleting a basic block, give other loop passes a chance cleanup analysis values, related to the instructions in the basic block.	2009-03-25 23:57:48 +00:00
LoopDeletion
LoopIndexSplit	Don't try to split a loop when the controlling icmp instruction	2009-06-27 22:58:27 +00:00
LoopRotate	Testcase for PR2639.	2009-04-23 04:30:52 +00:00
LoopSimplify	Teach LoopSimplify how to merge multiple loop exits into a single exit,	2009-06-27 21:30:38 +00:00
LoopStrengthReduce	Tweak this test to be a little less unusual.	2009-06-20 00:40:56 +00:00
LoopUnroll	remove a test that depends on -debug.	2009-03-13 20:31:48 +00:00
LoopUnswitch
LowerInvoke
LowerSetJmp
LowerSwitch
Mem2Reg	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
MemCpyOpt	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
MergeFunc	Given two identical weak functions, produce one internal function and two weak	2009-06-12 15:56:56 +00:00
PredicateSimplifier
PruneEH	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
RaiseAllocations
Reassociate	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
ScalarRepl	Don't crash trying to promote VLAs.	2009-08-17 05:37:31 +00:00
SCCP	Split the Add, Sub, and Mul instruction opcodes into separate	2009-06-04 22:49:04 +00:00
SimplifyCFG	Revert 79977. It causes llvm-gcc bootstrap failures on some platforms.	2009-08-26 05:01:18 +00:00
SimplifyLibCalls	Add targetdata strings to these tests, since SimplifyLibCalls uses	2009-08-19 23:18:49 +00:00
SRETPromotion
SSI	Fix up PHI nodes correctly in the presence of unreachable BBs, part two. Also	2009-08-19 07:16:57 +00:00
StripSymbols
TailCallElim	Improve tail call elim to move loads above readonly calls	2009-06-19 04:22:16 +00:00
TailDup	Remove obsolete -f flags.	2009-08-25 15:38:29 +00:00