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b6fdd022b7
llvm-6502/test/Transforms
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Benjamin Kramer b6fdd022b7 PR13095: Give an inline cost bonus to functions using byval arguments. 
We give a bonus for every argument because the argument setup is not needed
anymore when the function is inlined. With this patch we interpret byval
arguments as a compact representation of many arguments. The byval argument
setup is implemented in the backend as an inline memcpy, so to model the
cost as accurately as possible we take the number of pointer-sized elements
in the byval argument and give a bonus of 2 instructions for every one of
those. The bonus is capped at 8 elements, which is the number of stores
at which the x86 backend switches from an expanded inline memcpy to a real
memcpy. It would be better to use the real memcpy threshold from the backend,
but it's not available via TargetData.

This change brings the performance of c-ray in line with gcc 4.7. The included
test case tries to reproduce the c-ray problem to catch regressions for this
benchmark early, its performance is dominated by the inline decision of a
specific call.

This only has a small impact on most code, more on x86 and arm than on x86_64
due to the way the ABI works. When building LLVM for x86 it gives a small
inline cost boost to virtually any function using StringRef or STL allocators,
but only a 0.01% increase in overall binary size. The size of gcc compiled by
clang actually shrunk by a couple bytes with this patch applied, but not
significantly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161413 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07 11:13:19 +00:00
..
ADCE Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
ArgumentPromotion Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
BBVectorize Allow BBVectorize to form non-2^n-length vectors. 2012-06-28 05:42:42 +00:00
BlockPlacement Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
BranchFolding
CodeExtractor Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
CodeGenPrepare Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
ConstantMerge Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
ConstProp Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
CorrelatedValuePropagation make LazyValueInfo analyze the default case of switch statements (we know that in the default branch the value cannot be any of the switch cases) 2012-06-28 16:13:37 +00:00
DeadArgElim Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
DeadStoreElimination Teach DeadStoreElimination to eliminate exit-block stores with phi addresses. 2012-05-10 18:57:38 +00:00
EarlyCSE Fix regression from r151466: an we can't replace uses of an instruction reachable from the entry block with uses of an instruction not reachable from the entry block. PR12231. 2012-03-13 01:06:07 +00:00
FunctionAttrs Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
GlobalDCE Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
GlobalOpt Add testcases for GlobalOpt changes in r160693 and r160757. 2012-07-29 01:15:37 +00:00
GVN Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
IndVarSimplify indvars: Linear function test replace should avoid reusing undef. 2012-07-18 04:35:10 +00:00
Inline PR13095: Give an inline cost bonus to functions using byval arguments. 2012-08-07 11:13:19 +00:00
InstCombine When constant folding GEP expressions, keep the address space information of pointers. 2012-07-30 07:25:20 +00:00
InstSimplify Revert r153521 as it's causing large regressions on the nightly testers. 2012-03-28 18:42:50 +00:00
Internalize Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
IPConstantProp Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
JumpThreading Fix assertion in jump threading (PR13405). 2012-07-20 10:36:17 +00:00
LCSSA Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
LICM Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
LoopDeletion Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
LoopIdiom Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
LoopRotate llvm/test/Transforms/LoopRotate/PhiRename-1.ll: FileCheck-ize. It fixes PR13301. 2012-07-17 15:43:17 +00:00
LoopSimplify Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
LoopStrengthReduce Add a much more conservative strategy for aligning branch targets. 2012-08-07 09:45:24 +00:00
LoopUnroll Fix 12513: Loop unrolling breaks with indirect branches. 2012-04-10 05:14:42 +00:00
LoopUnswitch Convert the uses of '|&' to use '2>&1 |' instead, which works on old 2012-07-02 18:37:59 +00:00
LowerAtomic Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
LowerExpectIntrinsic Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
LowerInvoke Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
LowerSwitch PR1255 related changes (case ranges): 2012-05-24 09:33:20 +00:00
Mem2Reg Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
MemCpyOpt Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
MergeFunc Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
ObjCARC An objc_retain can serve as a may-use for a different pointer. 2012-07-23 19:27:31 +00:00
PhaseOrdering Reapply r155136 after fixing PR12599. 2012-04-23 17:39:52 +00:00
PruneEH Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
Reassociate Stop reassociate from looking through expressions of arbitrary complexity. This 2012-07-26 09:26:40 +00:00
ScalarRepl Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
SCCP Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
SimplifyCFG fix PR13339 (remove the predecessor from the unwind BB when removing an invoke) 2012-07-16 22:49:40 +00:00
SimplifyLibCalls Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
Sink Enhance the sinking code to handle diamond patterns. Patch by 2012-05-31 08:09:49 +00:00
StripSymbols Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
TailCallElim Convert the uses of '|&' to use '2>&1 |' instead, which works on old 2012-07-02 18:37:59 +00:00
TailDup Convert the uses of '|&' to use '2>&1 |' instead, which works on old 2012-07-02 18:37:59 +00:00