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llvm-6502/test/Transforms
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Quentin Colombet 637582eaf7 When code size is the priority (Oz, MinSize attribute), help llvm 
turning a code like this:

if (foo)
   free(foo)

into that:
free(foo)

Move a call to free from basic block FB into FB's predecessor, P,
when the path from P to FB is taken only if the argument of free is
not equal to NULL.

Some restrictions apply on P and FB to be sure that this code motion
is profitable. Namely:
1. FB must have only one predecessor P.
2. FB must contain only the call to free plus an unconditional
   branch to S.
3. P's successors are FB and S.

Because of 1., we will not increase the code size when moving the call
to free from FB to P.
Because of 2., FB will be empty after the move.
Because of 2. and 3., P's branch instruction becomes useless, so as FB
(simplifycfg will do the job).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171762 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07 18:37:41 +00:00
..
ADCE
ArgumentPromotion Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
BBVectorize Switch BBVectorize to directly depend on having a TTI analysis. 2013-01-07 10:22:36 +00:00
BlockPlacement
BranchFolding
CodeExtractor
CodeGenPrepare Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 01:28:40 +00:00
ConstantMerge Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 01:28:40 +00:00
ConstProp llvm/ConstantFolding.cpp: Make ReadDataFromGlobal() and FoldReinterpretLoadFromConstPtr() Big-endian-aware. 2012-11-08 20:34:25 +00:00
CorrelatedValuePropagation CorrelatedPropagation: BasicBlock::removePredecessor can simplify PHI nodes. If the it's the condition of a SwitchInst, reload it. 2012-09-28 10:42:50 +00:00
DeadArgElim Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
DeadStoreElimination Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
EarlyCSE There was a switch fall-through in the parser for textual LLVM that caused 2013-01-07 13:32:38 +00:00
FunctionAttrs
GlobalDCE
GlobalOpt Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
GVN Memory Dependence Analysis: fix a miscompile that uses DT to approxmiate the 2013-01-04 19:19:47 +00:00
IndVarSimplify Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
Inline Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 14:04:36 +00:00
InstCombine When code size is the priority (Oz, MinSize attribute), help llvm 2013-01-07 18:37:41 +00:00
InstSimplify Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
Internalize Change the internalize pass to internalize all symbols when given an empty 2012-10-26 18:47:48 +00:00
IPConstantProp
JumpThreading Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
LCSSA
LICM tabs-to-spaces 2013-01-04 23:11:35 +00:00
LoopDeletion Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
LoopIdiom Fix a mistaken commit that included some debugging code. 2013-01-07 13:41:55 +00:00
LoopRotate Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
LoopSimplify
LoopStrengthReduce Switch the SCEV expander and LoopStrengthReduce to use 2013-01-07 14:41:08 +00:00
LoopUnroll Add a new attribute, 'noduplicate'. If a function contains a noduplicate call, the call cannot be duplicated - Jump threading, loop unrolling, loop unswitching, and loop rotation are inhibited if they would duplicate the call. 2012-12-20 16:04:27 +00:00
LoopUnswitch Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
LoopVectorize Fix a typo. Remove the duplicated test. 2013-01-05 01:17:46 +00:00
LowerAtomic
LowerExpectIntrinsic
LowerInvoke
LowerSwitch
Mem2Reg
MemCpyOpt In my recent change to avoid use of underaligned memory I didn't notice that 2012-10-04 13:53:21 +00:00
MergeFunc Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
MetaRenamer Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
ObjCARC Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
PhaseOrdering Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 01:28:40 +00:00
PruneEH
Reassociate Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
ScalarRepl Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
SCCP Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
SimplifyCFG Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
SimplifyLibCalls Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 01:28:40 +00:00
Sink
SROA Rename the test so that we can add additional vectors-of-pointers tests 2012-12-18 05:50:54 +00:00
StripSymbols Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 13:57:25 +00:00
TailCallElim Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2013-01-01 14:04:36 +00:00
TailDup