maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[ARM] Add FeatureHasNoBranchPredictor for Thumb1 cores 

Mark v6m/v8m-baseline cores as having no branch predictors. This should
not alter very much on its own, but is more correct as the cores do not
have branch predictors and can help in the future.
This commit is contained in:
David Green 2021-03-30 21:45:26 +01:00
parent e2c7bf08cc
commit 3a6365a439
1 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
llvm/lib/Target/ARM/ARM.td
View File

@ -1000,10 +1000,14 @@ def : Processor<"arm1136jf-s", ARMV6Itineraries, [ARMv6,
FeatureVFP2,
FeatureHasSlowFPVMLx]>;
def : Processor<"cortex-m0", ARMV6Itineraries, [ARMv6m]>;
def : Processor<"cortex-m0plus", ARMV6Itineraries, [ARMv6m]>;
def : Processor<"cortex-m1", ARMV6Itineraries, [ARMv6m]>;
def : Processor<"sc000", ARMV6Itineraries, [ARMv6m]>;
def : Processor<"cortex-m0", ARMV6Itineraries, [ARMv6m,
FeatureHasNoBranchPredictor]>;
def : Processor<"cortex-m0plus", ARMV6Itineraries, [ARMv6m,
FeatureHasNoBranchPredictor]>;
def : Processor<"cortex-m1", ARMV6Itineraries, [ARMv6m,
FeatureHasNoBranchPredictor]>;
def : Processor<"sc000", ARMV6Itineraries, [ARMv6m,
FeatureHasNoBranchPredictor]>;
def : Processor<"arm1176j-s", ARMV6Itineraries, [ARMv6kz]>;
def : Processor<"arm1176jz-s", ARMV6Itineraries, [ARMv6kz]>;
@ -1199,7 +1203,8 @@ def : ProcessorModel<"cortex-m7", CortexM7Model, [ARMv7em,
FeatureUseMISched]>;
def : ProcNoItin<"cortex-m23", [ARMv8mBaseline,
FeatureNoMovt]>;
FeatureNoMovt,
FeatureHasNoBranchPredictor]>;
def : ProcessorModel<"cortex-m33", CortexM4Model, [ARMv8mMainline,
FeatureDSP,