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[HLSL][DIRECTX] Fixing update counter signature #115913

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Nov 14, 2024
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3 changes: 2 additions & 1 deletion llvm/include/llvm/IR/IntrinsicsDirectX.td
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,8 @@ def int_dx_typedBufferStore
[IntrWriteMem]>;

def int_dx_updateCounter
: DefaultAttrsIntrinsic<[], [llvm_any_ty, llvm_i8_ty]>;
: DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_any_ty, llvm_i8_ty],
[IntrInaccessibleMemOrArgMemOnly]>;

// Cast between target extension handle types and dxil-style opaque handles
def int_dx_cast_handle : Intrinsic<[llvm_any_ty], [llvm_any_ty]>;
Expand Down
2 changes: 1 addition & 1 deletion llvm/lib/Target/DirectX/DXIL.td
Original file line number Diff line number Diff line change
Expand Up @@ -757,7 +757,7 @@ def BufferStore : DXILOp<69, bufferStore> {
def UpdateCounter : DXILOp<70, bufferUpdateCounter> {
let Doc = "increments/decrements a buffer counter";
let arguments = [HandleTy, Int8Ty];
let result = VoidTy;
let result = Int32Ty;
let stages = [Stages<DXIL1_0, [all_stages]>];
}

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6 changes: 4 additions & 2 deletions llvm/lib/Target/DirectX/DXILOpLowering.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -488,6 +488,7 @@ class OpLowerer {

[[nodiscard]] bool lowerUpdateCounter(Function &F) {
IRBuilder<> &IRB = OpBuilder.getIRB();
Type *Int32Ty = IRB.getInt32Ty();

return replaceFunction(F, [&](CallInst *CI) -> Error {
IRB.SetInsertPoint(CI);
Expand All @@ -497,12 +498,13 @@ class OpLowerer {

std::array<Value *, 2> Args{Handle, Op1};

Expected<CallInst *> OpCall =
OpBuilder.tryCreateOp(OpCode::UpdateCounter, Args, CI->getName());
Expected<CallInst *> OpCall = OpBuilder.tryCreateOp(
OpCode::UpdateCounter, Args, CI->getName(), Int32Ty);

if (Error E = OpCall.takeError())
return E;

CI->replaceAllUsesWith(*OpCall);
CI->eraseFromParent();
return Error::success();
});
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12 changes: 6 additions & 6 deletions llvm/test/CodeGen/DirectX/updateCounter.ll
Original file line number Diff line number Diff line change
Expand Up @@ -11,8 +11,8 @@ define void @update_counter_decrement_vector() {
i32 0, i32 0, i32 1, i32 0, i1 false)

; CHECK-NEXT: [[BUFFANOT:%.*]] = call %dx.types.Handle @dx.op.annotateHandle(i32 216, %dx.types.Handle [[BIND]]
; CHECK-NEXT: call void @dx.op.bufferUpdateCounter(i32 70, %dx.types.Handle [[BUFFANOT]], i8 -1)
call void @llvm.dx.updateCounter(target("dx.TypedBuffer", <4 x float>, 0, 0, 0) %buffer, i8 -1)
; CHECK-NEXT: [[REG:%.*]] = call i32 @dx.op.bufferUpdateCounter(i32 70, %dx.types.Handle [[BUFFANOT]], i8 -1)
%1 = call i32 @llvm.dx.updateCounter(target("dx.TypedBuffer", <4 x float>, 0, 0, 0) %buffer, i8 -1)
ret void
}

Expand All @@ -23,8 +23,8 @@ define void @update_counter_increment_vector() {
@llvm.dx.handle.fromBinding.tdx.TypedBuffer_v4f32_0_0_0(
i32 0, i32 0, i32 1, i32 0, i1 false)
; CHECK-NEXT: [[BUFFANOT:%.*]] = call %dx.types.Handle @dx.op.annotateHandle(i32 216, %dx.types.Handle [[BIND]]
; CHECK-NEXT: call void @dx.op.bufferUpdateCounter(i32 70, %dx.types.Handle [[BUFFANOT]], i8 1)
call void @llvm.dx.updateCounter(target("dx.TypedBuffer", <4 x float>, 0, 0, 0) %buffer, i8 1)
; CHECK-NEXT: [[REG:%.*]] = call i32 @dx.op.bufferUpdateCounter(i32 70, %dx.types.Handle [[BUFFANOT]], i8 1)
%1 = call i32 @llvm.dx.updateCounter(target("dx.TypedBuffer", <4 x float>, 0, 0, 0) %buffer, i8 1)
ret void
}

Expand All @@ -35,7 +35,7 @@ define void @update_counter_decrement_scalar() {
@llvm.dx.handle.fromBinding.tdx.RawBuffer_i8_0_0t(
i32 1, i32 8, i32 1, i32 0, i1 false)
; CHECK-NEXT: [[BUFFANOT:%.*]] = call %dx.types.Handle @dx.op.annotateHandle(i32 216, %dx.types.Handle [[BIND]]
; CHECK-NEXT: call void @dx.op.bufferUpdateCounter(i32 70, %dx.types.Handle [[BUFFANOT]], i8 -1)
call void @llvm.dx.updateCounter(target("dx.RawBuffer", i8, 0, 0) %buffer, i8 -1)
; CHECK-NEXT: [[REG:%.*]] = call i32 @dx.op.bufferUpdateCounter(i32 70, %dx.types.Handle [[BUFFANOT]], i8 -1)
%1 = call i32 @llvm.dx.updateCounter(target("dx.RawBuffer", i8, 0, 0) %buffer, i8 -1)
ret void
}
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