Chris Lattner d2fa781169 Implement the first half of PR3290: if there is a store of an ... integer to a (transitive) bitcast the alloca and if that integer has the full size of the alloca, then it clobbers the whole thing. Handle this by extracting pieces out of the stored integer and filing them away in the SROA'd elements. This triggers fairly frequently because the CFE uses integers to pass small structs by value and the inliner exposes these. For example, in kimwitu++, I see a bunch of these with i64 stores to "%struct.std::pair<std::_Rb_tree_const_iterator<kc::impl_abstract_phylum*>,bool>" In 176.gcc I see a few i32 stores to "%struct..0anon". In the testcase, this is a difference between compiling test1 to: _test1: subl $12, %esp movl 20(%esp), %eax movl %eax, 4(%esp) movl 16(%esp), %eax movl %eax, (%esp) movl (%esp), %eax addl 4(%esp), %eax addl $12, %esp ret vs: _test1: movl 8(%esp), %eax addl 4(%esp), %eax ret The second half of this will be to handle loads of the same form. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61853 91177308-0d34-0410-b5e6-96231b3b80d8		2009-01-07 08:11:13 +00:00
..
ADCE	Remove the ability for ADCE to remove unreachable blocks in loop nests, because, as Eli pointed out, SimplifyCFG already does this.	2008-07-03 17:21:41 +00:00
ArgumentPromotion	Update the callgraph correctly in ArgumentPromotion.	2008-09-08 11:07:35 +00:00
BlockPlacement	Rationalize the names of passes that print information:	2008-09-23 12:47:39 +00:00
BranchFolding	Don't branch fold inline asm statements.	2007-10-19 21:09:55 +00:00
CodeExtractor	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
CodeGenPrepare	reenable test	2008-11-24 21:27:20 +00:00
CondProp	Remove llvm-upgrade and update test cases.	2008-03-01 09:15:35 +00:00
ConstantMerge	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
ConstProp	apply Eli's patch for PR2165 and provide a testcase.	2008-10-16 05:26:51 +00:00
DeadArgElim	Support inreg, zext and sext as return value attributes.	2008-09-29 20:49:50 +00:00
DeadStoreElimination	Reimplement the inner loop of DSE. It now uniformly uses getDependence(),	2008-12-06 00:53:22 +00:00
FunctionAttrs	When calculating 'nocapture' argument attributes, allow	2009-01-02 11:54:37 +00:00
GlobalDCE	Delete unused global aliases with internal linkage.	2009-01-05 20:37:33 +00:00
GlobalOpt	Reimplement the old and horrible bison parser for .ll files with a nice	2009-01-02 07:01:27 +00:00
GVN	fix PR3217: fully cached queries need to be verified against the	2008-12-16 07:10:09 +00:00
GVNPRE	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
IndVarsSimplify	convertToSignExtendedInteger should return opInvalidOp instead of asserting if sematics of float does not allow arithmetics.	2008-11-25 19:00:29 +00:00
Inline	Add PR number.	2008-11-05 18:41:15 +00:00
InstCombine	make m_ConstantInt(int64_t) safely match ConstantInt's that are larger than i64.	2009-01-05 23:45:50 +00:00
Internalize	Teach the internalize pass to also internalize	2009-01-05 21:24:45 +00:00
IPConstantProp	Modify some ipconstprop tests to also test with invokes.	2008-06-19 09:27:44 +00:00
JumpThreading	testcase for br undef folding.	2008-12-03 07:48:27 +00:00
LCSSA	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
LICM	Remove GCSE and LoadVN from the testsuite.	2008-08-16 00:00:54 +00:00
LoopDeletion	don't spew tons of stuff to the output. This testcase is *not* for	2008-12-03 06:41:50 +00:00
LoopIndexSplit	Rewrite code that 1) filters loops and 2) calculates new loop bounds.	2008-12-04 21:38:42 +00:00
LoopRotate	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
LoopSimplify	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
LoopStrengthReduce	Remove.	2008-09-09 21:41:34 +00:00
LoopUnroll	Add -unroll-allow-partial command line option that enabled the loop unroller to	2008-07-29 13:21:23 +00:00
LoopUnswitch	Actually test something. Use PR3170 test case.	2008-12-08 23:44:46 +00:00
LowerInvoke	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
LowerSetJmp	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
LowerSwitch	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
Mem2Reg	no need to print output	2008-10-27 06:56:35 +00:00
MemCpyOpt	Fix two issues that Eli Friedman pointed out, where would misoptimized code like:	2008-06-01 22:26:26 +00:00
MergeFunc	Fix tests not to emit IR output	2008-11-04 23:02:39 +00:00
PredicateSimplifier	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
PruneEH	Rationalize the names of passes that print information:	2008-09-23 12:47:39 +00:00
RaiseAllocations	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
Reassociate	Remove GCSE and LoadVN from the testsuite.	2008-08-16 00:00:54 +00:00
ScalarRepl	Implement the first half of PR3290: if there is a store of an	2009-01-07 08:11:13 +00:00
SCCP	Fix SCCP's handling of struct value loads and stores. SCCP doesn't	2008-08-13 21:22:48 +00:00
SimplifyCFG	Add a helper to remove a branch and DCE the condition, and use it	2008-12-16 20:54:32 +00:00
SimplifyLibCalls	Run a post-pass that marks known function declarations by name.	2009-01-04 20:27:34 +00:00
SRETPromotion	Add a basic test for the SRETPromotion pass.	2008-08-07 15:55:18 +00:00
StripSymbols	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
TailCallElim	sabre brings to my attention that the 'tr' suffix is also obsolete	2008-05-20 21:00:03 +00:00
TailDup	Revert 52223.	2008-06-12 20:55:39 +00:00