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
..
Analysis	Reimplement the non-local dependency data structure in terms of a sorted	2008-12-01 01:15:42 +00:00
Archive
AsmParser	Extend the 'noalias' attribute to function return values. This is intended to	2008-11-24 03:41:24 +00:00
Bitcode
CodeGen	Followup to r60283: optimize arbitrary width signed divisions as well	2008-11-30 06:35:39 +00:00
Debugger
ExecutionEngine	Make JIT::runFunction handle functions with non-C calling conventions.	2008-11-23 08:00:11 +00:00
Linker
Support	fix build on some machines. thanks buildbot	2008-11-27 16:42:44 +00:00
System
Target	Implement ((A|B)&1)|(B&-2) -> (A&1) | B transformation. This also takes care of	2008-12-01 01:07:11 +00:00
Transforms	Change instcombine to use FoldPHIArgGEPIntoPHI to fold two operand PHIs	2008-12-01 03:42:51 +00:00
VMCore	improve const correctness.	2008-11-27 08:39:18 +00:00
Makefile