1; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s 2 3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-n16:32:64" 4target triple = "nvptx64-nvidia-cuda" 5 6; Verify that both %input and %output are converted to global pointers and then 7; addrspacecast'ed back to the original type. 8define void @kernel(float* %input, float* %output) { 9; CHECK-LABEL: .visible .entry kernel( 10; CHECK: cvta.to.global.u64 11; CHECK: cvta.to.global.u64 12 %1 = load float, float* %input, align 4 13; CHECK: ld.global.f32 14 store float %1, float* %output, align 4 15; CHECK: st.global.f32 16 ret void 17} 18 19define void @kernel2(float addrspace(1)* %input, float addrspace(1)* %output) { 20; CHECK-LABEL: .visible .entry kernel2( 21; CHECK-NOT: cvta.to.global.u64 22 %1 = load float, float addrspace(1)* %input, align 4 23; CHECK: ld.global.f32 24 store float %1, float addrspace(1)* %output, align 4 25; CHECK: st.global.f32 26 ret void 27} 28 29%struct.S = type { i32*, i32* } 30 31define void @ptr_in_byval_kernel(%struct.S* byval %input, i32* %output) { 32; CHECK-LABEL: .visible .entry ptr_in_byval_kernel( 33; CHECK: ld.param.u64 %[[optr:rd.*]], [ptr_in_byval_kernel_param_1] 34; CHECK: cvta.to.global.u64 %[[optr_g:.*]], %[[optr]]; 35; CHECK: ld.param.u64 %[[iptr:rd.*]], [ptr_in_byval_kernel_param_0+8] 36; CHECK: cvta.to.global.u64 %[[iptr_g:.*]], %[[iptr]]; 37 %b_ptr = getelementptr inbounds %struct.S, %struct.S* %input, i64 0, i32 1 38 %b = load i32*, i32** %b_ptr, align 4 39 %v = load i32, i32* %b, align 4 40; CHECK: ld.global.u32 %[[val:.*]], [%[[iptr_g]]] 41 store i32 %v, i32* %output, align 4 42; CHECK: st.global.u32 [%[[optr_g]]], %[[val]] 43 ret void 44} 45 46; Regular functions lower byval arguments differently. We need to make 47; sure that we're loading byval argument data using [symbol+offset]. 48; There's also no assumption that all pointers within are in global space. 49define void @ptr_in_byval_func(%struct.S* byval %input, i32* %output) { 50; CHECK-LABEL: .visible .func ptr_in_byval_func( 51; CHECK: ld.param.u64 %[[optr:rd.*]], [ptr_in_byval_func_param_1] 52; CHECK: ld.param.u64 %[[iptr:rd.*]], [ptr_in_byval_func_param_0+8] 53 %b_ptr = getelementptr inbounds %struct.S, %struct.S* %input, i64 0, i32 1 54 %b = load i32*, i32** %b_ptr, align 4 55 %v = load i32, i32* %b, align 4 56; CHECK: ld.u32 %[[val:.*]], [%[[iptr]]] 57 store i32 %v, i32* %output, align 4 58; CHECK: st.u32 [%[[optr]]], %[[val]] 59 ret void 60} 61 62!nvvm.annotations = !{!0, !1, !2} 63!0 = !{void (float*, float*)* @kernel, !"kernel", i32 1} 64!1 = !{void (float addrspace(1)*, float addrspace(1)*)* @kernel2, !"kernel", i32 1} 65!2 = !{void (%struct.S*, i32*)* @ptr_in_byval_kernel, !"kernel", i32 1} 66