Skip to content

[RyuJIT] Add "rorx" instruction (BMI2) and emit it instead of "rol" when possible #41772

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
CarolEidt merged 15 commits into from
Sep 29, 2020
Merged

[RyuJIT] Add "rorx" instruction (BMI2) and emit it instead of "rol" when possible #41772

Changes from 1 commit
Commits
Show all changes
15 commits
Select commit Hold shift + click to select a range
562a10c
Use rorx instead of rol when possible
EgorBo Sep 2, 2020
928c55d
check for BMI2 availability
EgorBo Sep 3, 2020
ab495fc
Update codegenxarch.cpp
EgorBo Sep 3, 2020
ddb3382
Update codegenxarch.cpp
EgorBo Sep 3, 2020
462719c
Merge branch 'master' of github.com:dotnet/runtime into add-rorx-inst…
EgorBo Sep 3, 2020
b85c87b
formatting
EgorBo Sep 3, 2020
d808b86
Merge branch 'master' of github.com:dotnet/runtime into add-rorx-inst…
EgorBo Sep 4, 2020
739007b
handle GT_ROR
EgorBo Sep 4, 2020
c5933e9
clean up
EgorBo Sep 4, 2020
609af9e
Don't emit rorx when targetReg == operandReg
EgorBo Sep 5, 2020
1b3e055
Merge branch 'master' of github.com:dotnet/runtime into add-rorx-inst…
EgorBo Sep 9, 2020
5a36432
emit rorx only for long integers
EgorBo Sep 9, 2020
da9d166
wrap with TARGET_64BIT
EgorBo Sep 9, 2020
7cbb1ce
clean up
EgorBo Sep 9, 2020
9e9b1cb
clean up
EgorBo Sep 9, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
formatting
  • Loading branch information
@EgorBo
EgorBo committed Sep 3, 2020
commit b85c87bcb3e6bac0faeb6016683ed26d334c2f78
6 changes: 4 additions & 2 deletions src/coreclr/src/jit/codegenxarch.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4085,8 +4085,10 @@ void CodeGen::genCodeForShift(GenTree* tree)
{
int typeWidth = genTypeSize(genActualType(targetType)) * 8;
int shiftByValue = (int)shiftBy->AsIntConCommon()->IconValue();
if (compiler->compOpportunisticallyDependsOn(InstructionSet_BMI2) && tree->OperIs(GT_ROL) && (shiftByValue > 0) &&
(shiftByValue < typeWidth))

// Try to emit rorx if BMI is available instead of rol
if (compiler->compOpportunisticallyDependsOn(InstructionSet_BMI2) && tree->OperIs(GT_ROL) &&
(shiftByValue > 0) && (shiftByValue < typeWidth))
{
assert((typeWidth == 32) || (typeWidth == 64));

Expand Down