Index: llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp =================================================================== --- llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp +++ llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp @@ -1543,6 +1543,18 @@ } return true; } + case Intrinsic::convert_from_fp16: + // FIXME: This intrinsic should probably be removed from the IR. + MIRBuilder.buildFPExt(getOrCreateVReg(CI), + getOrCreateVReg(*CI.getArgOperand(0)), + MachineInstr::copyFlagsFromInstruction(CI)); + return true; + case Intrinsic::convert_to_fp16: + // FIXME: This intrinsic should probably be removed from the IR. + MIRBuilder.buildFPTrunc(getOrCreateVReg(CI), + getOrCreateVReg(*CI.getArgOperand(0)), + MachineInstr::copyFlagsFromInstruction(CI)); + return true; case Intrinsic::memcpy: case Intrinsic::memmove: case Intrinsic::memset: Index: llvm/test/CodeGen/AArch64/GlobalISel/irtranslator-convert-fp16-intrinsics.ll =================================================================== --- /dev/null +++ llvm/test/CodeGen/AArch64/GlobalISel/irtranslator-convert-fp16-intrinsics.ll @@ -0,0 +1,31 @@ +; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py +; RUN: llc -mtriple=aarch64-- -mcpu=falkor -mattr=+lse -O0 -aarch64-enable-atomic-cfg-tidy=0 -stop-after=irtranslator -global-isel -verify-machineinstrs %s -o - | FileCheck %s + +define i16 @convert_to_fp16(float %src) { + ; CHECK-LABEL: name: convert_to_fp16 + ; CHECK: bb.1 (%ir-block.0): + ; CHECK: liveins: $s0 + ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $s0 + ; CHECK: [[FPTRUNC:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY]](s32) + ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[FPTRUNC]](s16) + ; CHECK: $w0 = COPY [[ANYEXT]](s32) + ; CHECK: RET_ReallyLR implicit $w0 + %cvt = call i16 @llvm.convert.to.fp16.f32(float %src) + ret i16 %cvt +} + +define float @convert_from_fp16(i16 %src) { + ; CHECK-LABEL: name: convert_from_fp16 + ; CHECK: bb.1 (%ir-block.0): + ; CHECK: liveins: $w0 + ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0 + ; CHECK: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[COPY]](s32) + ; CHECK: [[FPEXT:%[0-9]+]]:_(s32) = G_FPEXT [[TRUNC]](s16) + ; CHECK: $s0 = COPY [[FPEXT]](s32) + ; CHECK: RET_ReallyLR implicit $s0 + %cvt = call float @llvm.convert.from.fp16.f32(i16 %src) + ret float %cvt +} + +declare i16 @llvm.convert.to.fp16.f32(float) nounwind readnone +declare float @llvm.convert.from.fp16.f32(i16) nounwind readnone