llvm-6502/lib/CodeGen/SelectionDAG
Lang Hames e023141322 Rename -allow-excess-fp-precision flag to -fuse-fp-ops, and switch from a
boolean flag to an enum: { Fast, Standard, Strict } (default = Standard).

This option controls the creation by optimizations of fused FP ops that store
intermediate results in higher precision than IEEE allows (E.g. FMAs). The
behavior of this option is intended to match the behaviour specified by a
soon-to-be-introduced frontend flag: '-ffuse-fp-ops'.

Fast mode - allows formation of fused FP ops whenever they're profitable.

Standard mode - allow fusion only for 'blessed' FP ops. At present the only
blessed op is the fmuladd intrinsic. In the future more blessed ops may be
added.

Strict mode - allow fusion only if/when it can be proven that the excess
precision won't effect the result.

Note: This option only controls formation of fused ops by the optimizers.  Fused
operations that are explicitly requested (e.g. FMA via the llvm.fma.* intrinsic)
will always be honored, regardless of the value of this option.

Internally TargetOptions::AllowExcessFPPrecision has been replaced by
TargetOptions::AllowFPOpFusion.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158956 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22 01:09:09 +00:00
..
CMakeLists.txt
DAGCombiner.cpp Rename -allow-excess-fp-precision flag to -fuse-fp-ops, and switch from a 2012-06-22 01:09:09 +00:00
FastISel.cpp ARM: properly handle alignment for struct byval. 2012-06-01 19:33:18 +00:00
FunctionLoweringInfo.cpp
InstrEmitter.cpp Add an MF argument to TRI::getPointerRegClass() and TII::getRegClass(). 2012-05-07 22:10:26 +00:00
InstrEmitter.h
LegalizeDAG.cpp Emit a single _udivmodsi4 libcall instead of two separate _udivsi3 and 2012-06-21 05:56:05 +00:00
LegalizeFloatTypes.cpp
LegalizeIntegerTypes.cpp Change interface for TargetLowering::LowerCallTo and TargetLowering::LowerCall 2012-05-25 16:35:28 +00:00
LegalizeTypes.cpp Change interface for TargetLowering::LowerCallTo and TargetLowering::LowerCall 2012-05-25 16:35:28 +00:00
LegalizeTypes.h Fix a thinko in DisintegrateMERGE_VALUES. Patch by Xiaoyi Guo. 2012-05-16 07:57:18 +00:00
LegalizeTypesGeneric.cpp
LegalizeVectorOps.cpp
LegalizeVectorTypes.cpp
LLVMBuild.txt
Makefile
ResourcePriorityQueue.cpp misched: Added MultiIssueItineraries. 2012-06-05 03:44:40 +00:00
ScheduleDAGFast.cpp Simplify some more getAliasSet callers. 2012-06-01 22:38:17 +00:00
ScheduleDAGRRList.cpp sdsched: Use the right heuristics when -mcpu is not provided and we have no itinerary. 2012-06-05 03:44:34 +00:00
ScheduleDAGSDNodes.cpp
ScheduleDAGSDNodes.h misched: API for minimum vs. expected latency. 2012-06-05 21:11:27 +00:00
ScheduleDAGVLIW.cpp
SDNodeDbgValue.h
SDNodeOrdering.h
SelectionDAG.cpp Change interface for TargetLowering::LowerCallTo and TargetLowering::LowerCall 2012-05-25 16:35:28 +00:00
SelectionDAGBuilder.cpp Rename -allow-excess-fp-precision flag to -fuse-fp-ops, and switch from a 2012-06-22 01:09:09 +00:00
SelectionDAGBuilder.h Fix typos found by http://github.com/lyda/misspell-check 2012-06-02 10:20:22 +00:00
SelectionDAGDumper.cpp Rename @llvm.debugger to @llvm.debugtrap. 2012-05-14 18:58:10 +00:00
SelectionDAGISel.cpp
SelectionDAGPrinter.cpp
TargetLowering.cpp Remove the "-promote-elements" flag. This flag is now enabled by default. 2012-06-04 11:27:21 +00:00
TargetSelectionDAGInfo.cpp