llvm-6502/include/llvm/Target
Hal Finkel c404e8208c Optionally enable more-aggressive FMA formation in DAGCombine
The heuristic used by DAGCombine to form FMAs checks that the FMUL has only one
use, but this is overly-conservative on some systems. Specifically, if the FMA
and the FADD have the same latency (and the FMA does not compete for resources
with the FMUL any more than the FADD does), there is no need for the
restriction, and furthermore, forming the FMA leaving the FMUL can still allow
for higher overall throughput and decreased critical-path length.

Here we add a new TLI callback, enableAggressiveFMAFusion, false by default, to
elide the hasOneUse check. This is enabled for PowerPC by default, as most
PowerPC systems will benefit.

Patch by Olivier Sallenave, thanks!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218120 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-19 11:42:56 +00:00
..
CostTable.h
Target.td Add isInsertSubreg property. 2014-08-20 23:49:36 +00:00
TargetCallingConv.h ARM: HFAs must be passed in consecutive registers 2014-05-09 14:01:47 +00:00
TargetCallingConv.td ARM: HFAs must be passed in consecutive registers 2014-05-09 14:01:47 +00:00
TargetFrameLowering.h Re-apply r211399, "Generate native unwind info on Win64" with a fix to ignore SEH pseudo ops in X86 JIT emitter. 2014-06-25 12:41:52 +00:00
TargetInstrInfo.h Fix a lot of confusion around inserting nops on empty functions. 2014-09-15 18:32:58 +00:00
TargetIntrinsicInfo.h Trailing whitespace. 2014-07-23 00:42:52 +00:00
TargetItinerary.td
TargetLibraryInfo.h Trailing whitespace. 2014-07-23 00:42:52 +00:00
TargetLowering.h Optionally enable more-aggressive FMA formation in DAGCombine 2014-09-19 11:42:56 +00:00
TargetLoweringObjectFile.h CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF 2014-07-14 22:57:27 +00:00
TargetMachine.h Add a new pass FunctionTargetTransformInfo. This pass serves as a 2014-09-18 00:34:14 +00:00
TargetOpcodes.h [stack protector] Fix a potential security bug in stack protector where the 2014-07-25 19:31:34 +00:00
TargetOptions.h Satiate the sanitizer build bot 2014-08-21 20:09:15 +00:00
TargetRegisterInfo.h [RegisterCoalescer] Moving the RegisterCoalescer subtarget hook onto the TargetRegisterInfo instead of the TargetSubtargetInfo. 2014-07-16 20:13:31 +00:00
TargetSchedule.td Move Post RA Scheduling flag bit into SchedMachineModel 2014-07-15 22:39:58 +00:00
TargetSelectionDAG.td Fix typos 2014-07-17 17:50:22 +00:00
TargetSelectionDAGInfo.h Trailing whitespace. 2014-07-23 00:42:52 +00:00
TargetSubtargetInfo.h Remove resetSubtargetFeatures as it is unused. 2014-09-03 20:36:31 +00:00