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AMDGPU: Add llvm.amdgcn.interp.mov intrinsic 

Reviewers: arsenm, nhaehnle

Subscribers: kzhuravl, wdng, yaxunl, tony-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D26725

llvm-svn: 288865
This commit is contained in:
Tom Stellard 2016-12-06 23:52:13 +00:00
parent 7f1bad88c3
commit 2187bb8a89
3 changed files with 19 additions and 1 deletions
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8
llvm/include/llvm/IR/IntrinsicsAMDGPU.td
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@ -475,6 +475,14 @@ def int_amdgcn_s_getreg :
GCCBuiltin<"__builtin_amdgcn_s_getreg">,
Intrinsic<[llvm_i32_ty], [llvm_i32_ty], [IntrReadMem]>;
// __builtin_amdgcn_interp_mov <param>, <attr_chan>, <attr>, <m0>
// param values: 0 = P10, 1 = P20, 2 = P0
def int_amdgcn_interp_mov :
GCCBuiltin<"__builtin_amdgcn_interp_mov">,
Intrinsic<[llvm_float_ty],
[llvm_i32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i32_ty],
[IntrNoMem]>;
// __builtin_amdgcn_interp_p1 <i>, <attr_chan>, <attr>, <m0>
def int_amdgcn_interp_p1 :
GCCBuiltin<"__builtin_amdgcn_interp_p1">,

6
llvm/lib/Target/AMDGPU/SIISelLowering.cpp
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@ -2497,6 +2497,12 @@ SDValue SITargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
return DAG.getNode(AMDGPUISD::INTERP_P2, DL, MVT::f32, P1, J,
Op.getOperand(1), Op.getOperand(2), Glue);
}
case Intrinsic::amdgcn_interp_mov: {
SDValue M0 = copyToM0(DAG, DAG.getEntryNode(), DL, Op.getOperand(4));
SDValue Glue = M0.getValue(1);
return DAG.getNode(AMDGPUISD::INTERP_MOV, DL, MVT::f32, Op.getOperand(1),
Op.getOperand(2), Op.getOperand(3), Glue);
}
case Intrinsic::amdgcn_interp_p1: {
SDValue M0 = copyToM0(DAG, DAG.getEntryNode(), DL, Op.getOperand(4));
SDValue Glue = M0.getValue(1);

6
llvm/test/CodeGen/AMDGPU/llvm.amdgcn.interp.ll
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@ -14,7 +14,9 @@ main_body:
%p1_0 = call float @llvm.amdgcn.interp.p2(float %p0_0, float %j, i32 0, i32 0, i32 %3)
%p0_1 = call float @llvm.amdgcn.interp.p1(float %i, i32 1, i32 0, i32 %3)
%p1_1 = call float @llvm.amdgcn.interp.p2(float %p0_1, float %j, i32 1, i32 0, i32 %3)
call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %p0_0, float %p0_0, float %p1_1, float %p1_1)
%const = call float @llvm.amdgcn.interp.mov(i32 2, i32 0, i32 0, i32 %3)
%w = fadd float %p1_1, %const
call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %p0_0, float %p0_0, float %p1_1, float %w)
ret void
}
@ -24,6 +26,8 @@ declare float @llvm.amdgcn.interp.p1(float, i32, i32, i32) #0
; Function Attrs: nounwind readnone
declare float @llvm.amdgcn.interp.p2(float, float, i32, i32, i32) #0
declare float @llvm.amdgcn.interp.mov(i32, i32, i32, i32) #0
declare void @llvm.SI.export(i32, i32, i32, i32, i32, float, float, float, float)
attributes #0 = { nounwind readnone }