llvm-6502/lib
Hal Finkel b7c01bf403 [PowerPC] Mark all instructions as non-cheap for MachineLICM
MachineLICM uses a callback named hasLowDefLatency to determine if an
instruction def operand has a 'low' latency. If all relevant operands have a
'low' latency, the instruction is considered too cheap to hoist out of loops
even in low-register-pressure situations. On PowerPC cores, both the embedded
cores and the others, there is no reason to believe that this is a good choice:
all instructions have a cost inside a loop, and hoisting them when not limited
by register pressure is a reasonable default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225471 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-08 22:11:49 +00:00
..
Analysis Remove empty statement. No functionality change. 2015-01-08 00:47:03 +00:00
AsmParser Change the .ll syntax for comdats and add a syntactic sugar. 2015-01-06 22:55:16 +00:00
Bitcode clang-format. NFC. 2015-01-08 16:25:01 +00:00
CodeGen [MachineLICM] A command-line option to hoist even cheap instructions 2015-01-08 22:10:48 +00:00
DebugInfo Implement a very basic colored syntax highlighting for llvm-dwarfdump. 2015-01-06 16:50:25 +00:00
ExecutionEngine RTDyldMemoryManager.cpp: Make the reference to __morestack weak. 2014-12-30 22:52:33 +00:00
IR [GC] improve testing around gc.relocate and fix a test 2015-01-07 22:48:01 +00:00
IRReader Remove unused variable. NFC. 2014-11-06 23:16:57 +00:00
LineEditor
Linker Linker: Don't use MDNode::replaceOperandWith() 2015-01-07 21:32:27 +00:00
LTO LTO: Lazy-load LTOModule in local contexts 2014-12-17 22:05:42 +00:00
MC Revert r224935 "Refactor duplicated code. No intended functionality change." 2015-01-06 23:04:36 +00:00
Object Don't loop endlessly for MachO files with 0 ncmds 2015-01-06 17:08:26 +00:00
Option Add an overload of getLastArgNoClaim taking two OptSpecifiers. 2014-09-12 19:42:53 +00:00
ProfileData llvm-cov: Sink some reporting logic into CoverageMapping 2014-11-14 01:50:32 +00:00
Support Triple: Add amdgcn triple 2015-01-06 18:00:00 +00:00
TableGen Clean up static analyzer warnings. 2014-12-12 21:48:03 +00:00
Target [PowerPC] Mark all instructions as non-cheap for MachineLICM 2015-01-08 22:11:49 +00:00
Transforms Fix fcmp + fabs instcombines when using the intrinsic 2015-01-08 20:09:34 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile