Chris Lattner 38b3dcc465 Change instcombine to use FoldPHIArgGEPIntoPHI to fold two operand PHIs ... instead of using FoldPHIArgBinOpIntoPHI. In addition to being more obvious, this also fixes a problem where instcombine wouldn't merge two phis that had different variable indices. This prevented instcombine from factoring big chunks of code in 403.gcc. For example: insn_cuid.exit: - %tmp336 = load i32** @uid_cuid, align 4 - %tmp337 = getelementptr %struct.rtx_def* %insn_addr.0.ph.i, i32 0, i32 3 - %tmp338 = bitcast [1 x %struct.rtunion]* %tmp337 to i32* - %tmp339 = load i32* %tmp338, align 4 - %tmp340 = getelementptr i32* %tmp336, i32 %tmp339 br label %bb62 bb61: - %tmp341 = load i32** @uid_cuid, align 4 - %tmp342 = getelementptr %struct.rtx_def* %insn, i32 0, i32 3 - %tmp343 = bitcast [1 x %struct.rtunion]* %tmp342 to i32* - %tmp344 = load i32* %tmp343, align 4 - %tmp345 = getelementptr i32* %tmp341, i32 %tmp344 br label %bb62 bb62: - %iftmp.62.0.in = phi i32* [ %tmp345, %bb61 ], [ %tmp340, %insn_cuid.exit ] + %insn.pn2 = phi %struct.rtx_def* [ %insn, %bb61 ], [ %insn_addr.0.ph.i, %insn_cuid.exit ] + %tmp344.pn.in.in = getelementptr %struct.rtx_def* %insn.pn2, i32 0, i32 3 + %tmp344.pn.in = bitcast [1 x %struct.rtunion]* %tmp344.pn.in.in to i32* + %tmp341.pn = load i32** @uid_cuid + %tmp344.pn = load i32* %tmp344.pn.in + %iftmp.62.0.in = getelementptr i32* %tmp341.pn, i32 %tmp344.pn %iftmp.62.0 = load i32* %iftmp.62.0.in git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60325 91177308-0d34-0410-b5e6-96231b3b80d8		2008-12-01 03:42:51 +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	Change instcombine to use FoldPHIArgGEPIntoPHI to fold two operand PHIs	2008-12-01 03:42:51 +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
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
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