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
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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