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05f18920e1
llvm-6502/test/Transforms
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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 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
AddReadAttrs Ignore loads from and stores to local memory (i.e. allocas) 2008-10-04 13:24:24 +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 Fix a thinko that manifested as a crash on clamav last night. 2008-11-29 20:29:04 +00:00
GlobalDCE sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
GlobalOpt Resolve aliases, when possible 2008-09-09 19:04:59 +00:00
GVN testcase for my previous commit. 2008-12-01 01:42:03 +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 Teach inst combine to merge GEPs through PHIs. This is really 2008-12-01 02:34:36 +00:00
Internalize Let some more tests ignore expected output on stderr. 2008-06-10 15:04:14 +00:00
IPConstantProp Modify some ipconstprop tests to also test with invokes. 2008-06-19 09:27:44 +00:00
JumpThreading don't call MergeBasicBlockIntoOnlyPred on a block whose only 2008-11-28 19:54:49 +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 sabre brings to my attention that the 'tr' suffix is also obsolete 2008-05-20 21:00:03 +00:00
LoopIndexSplit If the sign of exit condition and split condition does not match 2008-11-10 19:48:34 +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 Ignore conditions that are outside the loop. 2008-11-03 19:38:07 +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 Allow scalarrepl to treat an all-zero GEP just as bitcast. 2008-10-06 16:23:31 +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 Fix PR2967 by not deleting volatile load/stores that occur before unreachable. 2008-10-29 17:46:26 +00:00
SimplifyLibCalls Optimize memmove and memset into the LLVM builtins. Note that these 2008-11-30 08:32:11 +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