Chris Lattner 05f18920e1 Teach inst combine to merge GEPs through PHIs. This is really ... important because it is sinking the loads using the GEPs, but not the GEPs themselves. This triggers 647 times on 403.gcc and makes the .s file much much nicer. For example before: je LBB1_87 ## bb78 LBB1_62: ## bb77 leal 84(%esi), %eax LBB1_63: ## bb79 movl (%eax), %eax ... LBB1_87: ## bb78 movl $0, 4(%esp) movl %esi, (%esp) call L_make_decl_rtl$stub jmp LBB1_62 ## bb77 after: jne LBB1_63 ## bb79 LBB1_62: ## bb78 movl $0, 4(%esp) movl %esi, (%esp) call L_make_decl_rtl$stub LBB1_63: ## bb79 movl 84(%esi), %eax The input code was (and the GEPs are merged and the PHI is now eliminated by instcombine): br i1 %tmp233, label %bb78, label %bb77 bb77: %tmp234 = getelementptr %struct.tree_node* %t_addr.3, i32 0, i32 0, i32 22 br label %bb79 bb78: call void @make_decl_rtl(%struct.tree_node* %t_addr.3, i8* null) nounwind %tmp235 = getelementptr %struct.tree_node* %t_addr.3, i32 0, i32 0, i32 22 br label %bb79 bb79: %iftmp.12.0.in = phi %struct.rtx_def** [ %tmp235, %bb78 ], [ %tmp234, %bb77 ] %iftmp.12.0 = load %struct.rtx_def** %iftmp.12.0.in git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60322 91177308-0d34-0410-b5e6-96231b3b80d8		2008-12-01 02:34:36 +00:00
..
ADCE.cpp	Let instcombiner remove redundant dbg intrinsics.	2008-11-19 18:59:41 +00:00
BasicBlockPlacement.cpp	Tidy up several unbeseeming casts from pointer to intptr_t.	2008-09-04 17:05:41 +00:00
CMakeLists.txt	CMake: updated list of source files.	2008-11-05 00:11:22 +00:00
CodeGenPrepare.cpp	don't call MergeBasicBlockIntoOnlyPred on a block whose only	2008-11-28 19:54:49 +00:00
CondPropagate.cpp	Tidy up several unbeseeming casts from pointer to intptr_t.	2008-09-04 17:05:41 +00:00
ConstantProp.cpp	Tidy up several unbeseeming casts from pointer to intptr_t.	2008-09-04 17:05:41 +00:00
DCE.cpp	simplify this logic.	2008-11-27 22:46:09 +00:00
DeadStoreElimination.cpp	Fix a thinko that manifested as a crash on clamav last night.	2008-11-29 20:29:04 +00:00
GVN.cpp	Make GVN be more intelligent about redundant load	2008-12-01 01:31:36 +00:00
GVNPRE.cpp	Tidy up several unbeseeming casts from pointer to intptr_t.	2008-09-04 17:05:41 +00:00
IndVarSimplify.cpp	Revert r60042. IndVarSimplify should check if APFloat is PPCDoubleDouble first before trying to convert it to an integer.	2008-11-26 01:11:57 +00:00
InstructionCombining.cpp	Teach inst combine to merge GEPs through PHIs. This is really	2008-12-01 02:34:36 +00:00
JumpThreading.cpp	don't call MergeBasicBlockIntoOnlyPred on a block whose only	2008-11-28 19:54:49 +00:00
LICM.cpp	Change create*Pass factory functions to return Pass* instead of	2008-10-22 23:32:42 +00:00
LoopDeletion.cpp	Change create*Pass factory functions to return Pass* instead of	2008-10-22 23:32:42 +00:00
LoopIndexSplit.cpp	If the sign of exit condition and split condition does not match	2008-11-10 19:48:34 +00:00
LoopRotation.cpp	Change create*Pass factory functions to return Pass* instead of	2008-10-22 23:32:42 +00:00
LoopStrengthReduce.cpp	Temporarily revert r60195. It's causing an optimized bootstrap of llvm-gcc to fail.	2008-11-29 03:43:04 +00:00
LoopUnroll.cpp	Change create*Pass factory functions to return Pass* instead of	2008-10-22 23:32:42 +00:00
LoopUnswitch.cpp	Ignore conditions that are outside the loop.	2008-11-03 19:38:07 +00:00
Makefile	remove attribution from lib Makefiles.	2007-12-29 20:09:26 +00:00
MemCpyOptimizer.cpp	Eliminate the dropInstruction method, which is not needed any more.	2008-11-29 23:30:39 +00:00
PredicateSimplifier.cpp	Silence unused variable warnings.	2008-11-21 20:00:59 +00:00
Reassociate.cpp	Fix build failure.	2008-11-21 21:00:20 +00:00
Reg2Mem.cpp	Tidy up several unbeseeming casts from pointer to intptr_t.	2008-09-04 17:05:41 +00:00
Scalar.cpp	C and Objective Caml bindings for mem2reg and reg2mem.	2008-03-20 17:16:03 +00:00
ScalarReplAggregates.cpp	Allow SROA of vectors. Removing this caused a	2008-11-04 20:54:03 +00:00
SCCP.cpp	Fix unused variable warnings.	2008-11-21 01:52:59 +00:00
SimplifyCFGPass.cpp	Large mechanical patch.	2008-09-25 21:00:45 +00:00
SimplifyHalfPowrLibCalls.cpp	Add a new pass to simplify specific half_powr function calls. This is	2008-11-04 23:41:45 +00:00
SimplifyLibCalls.cpp	Optimize memmove and memset into the LLVM builtins. Note that these	2008-11-30 08:32:11 +00:00
TailDuplication.cpp	simplify code.	2008-11-27 22:56:14 +00:00
TailRecursionElimination.cpp	Tidy up several unbeseeming casts from pointer to intptr_t.	2008-09-04 17:05:41 +00:00