[PATCH] D74406: Add RsqrtOp to LLVM dialect.
Adrian Kuegel via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Feb 11 06:37:24 PST 2020
akuegel created this revision.
Herald added subscribers: llvm-commits, Joonsoo, liufengdb, aartbik, lucyrfox, mgester, arpith-jacob, nicolasvasilache, antiagainst, shauheen, burmako, jpienaar, rriddle, mehdi_amini.
Herald added a project: LLVM.
akuegel edited the summary of this revision.
akuegel added reviewers: herhut, pifon2a.
Add a convenience Op Rsqrt which is 1 / sqrt.
Also add the SameOperandsAndResultType trait to the Log Op.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D74406
Files:
mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
mlir/test/Dialect/LLVMIR/roundtrip.mlir
Index: mlir/test/Dialect/LLVMIR/roundtrip.mlir
===================================================================
--- mlir/test/Dialect/LLVMIR/roundtrip.mlir
+++ mlir/test/Dialect/LLVMIR/roundtrip.mlir
@@ -97,6 +97,10 @@
// CHECK: %29 = llvm.fneg %arg1 : !llvm.float
%29 = llvm.fneg %arg1 : !llvm.float
+// Floating point unary operations.
+// CHECK: %30 = llvm.rsqrt %arg1 : !llvm.float
+ %30 = llvm.rsqrt %arg1 : !llvm.float
+
// CHECK: llvm.return
llvm.return
}
Index: mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
===================================================================
--- mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
+++ mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
@@ -231,8 +231,24 @@
def LLVM_FMulOp : LLVM_ArithmeticOp<"fmul", "CreateFMul">;
def LLVM_FDivOp : LLVM_ArithmeticOp<"fdiv", "CreateFDiv">;
def LLVM_FRemOp : LLVM_ArithmeticOp<"frem", "CreateFRem">;
+
+// Floating point unary operations.
def LLVM_FNegOp : LLVM_UnaryArithmeticOp<"fneg", "CreateFNeg">;
+def LLVM_RsqrtOp : LLVM_Op<"rsqrt", [NoSideEffect, SameOperandsAndResultType]>,
+ Arguments<(ins LLVM_Type:$in)>,
+ Results<(outs LLVM_Type:$res)> {
+ let llvmBuilder = [{
+ llvm::Module *module = builder.GetInsertBlock()->getModule();
+ llvm::Function *fn = llvm::Intrinsic::getDeclaration(
+ module, llvm::Intrinsic::sqrt, {$in->getType()});
+ auto sqrt = builder.CreateCall(fn, {$in});
+ $res = builder.CreateFDiv(llvm::ConstantFP::get(sqrt->getType(), 1), sqrt);
+ }];
+ let parser = [{ return impl::parseOneResultSameOperandTypeOp(parser, result); }];
+ let printer = [{ mlir::impl::printOneResultOp(this->getOperation(), p); }];
+}
+
// Memory-related operations.
def LLVM_AllocaOp :
LLVM_OneResultOp<"alloca">,
@@ -736,7 +752,7 @@
def LLVM_FMulAddOp : LLVM_TernarySameArgsIntrinsicOp<"fmuladd">;
def LLVM_SqrtOp : LLVM_UnaryIntrinsicOp<"sqrt">;
-def LLVM_LogOp : LLVM_Op<"intr.log", [NoSideEffect]>,
+def LLVM_LogOp : LLVM_Op<"intr.log", [NoSideEffect, SameOperandsAndResultType]>,
Arguments<(ins LLVM_Type:$in)>,
Results<(outs LLVM_Type:$res)> {
let llvmBuilder = [{
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