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llvm-project/llvm/test/CodeGen/NVPTX/lower-kernel-ptr-arg.ll

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[NVPTX] roll forward r239082 NVPTXISelDAGToDAG translates "addrspacecast to param" to NVPTX::nvvm_ptr_gen_to_param Added an llc test in bug21465. llvm-svn: 239100
2015-06-05 05:28:26 +08:00
; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s
target 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"
[NVPTX] convert pointers in byval kernel arguments to global Summary: For example, in struct S { int *x; int *y; }; __global__ void foo(S s) { int *b = s.y; // use b } "b" is guaranteed to point to global. NVPTX should emit ld.global/st.global for accessing "b". Reviewers: jholewinski Subscribers: llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D11505 llvm-svn: 243790
2015-08-01 05:44:14 +08:00
target triple = "nvptx64-nvidia-cuda"
[NVPTX] roll forward r239082 NVPTXISelDAGToDAG translates "addrspacecast to param" to NVPTX::nvvm_ptr_gen_to_param Added an llc test in bug21465. llvm-svn: 239100
2015-06-05 05:28:26 +08:00
; Verify that both %input and %output are converted to global pointers and then
; addrspacecast'ed back to the original type.
define void @kernel(float* %input, float* %output) {
; CHECK-LABEL: .visible .entry kernel(
; CHECK: cvta.to.global.u64
; CHECK: cvta.to.global.u64
%1 = load float, float* %input, align 4
; CHECK: ld.global.f32
store float %1, float* %output, align 4
; CHECK: st.global.f32
ret void
}
[NVPTX] noop when kernel pointers are already global Summary: Some front ends make kernel pointers global already. In that case, handlePointerParams does nothing. Test Plan: more tests in lower-kernel-ptr-arg.ll Reviewers: grosser Subscribers: jholewinski, llvm-commits Differential Revision: http://reviews.llvm.org/D10779 llvm-svn: 240849
2015-06-27 06:35:43 +08:00
define void @kernel2(float addrspace(1)* %input, float addrspace(1)* %output) {
; CHECK-LABEL: .visible .entry kernel2(
; CHECK-NOT: cvta.to.global.u64
%1 = load float, float addrspace(1)* %input, align 4
; CHECK: ld.global.f32
store float %1, float addrspace(1)* %output, align 4
; CHECK: st.global.f32
ret void
}
[NVPTX] convert pointers in byval kernel arguments to global Summary: For example, in struct S { int *x; int *y; }; __global__ void foo(S s) { int *b = s.y; // use b } "b" is guaranteed to point to global. NVPTX should emit ld.global/st.global for accessing "b". Reviewers: jholewinski Subscribers: llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D11505 llvm-svn: 243790
2015-08-01 05:44:14 +08:00
%struct.S = type { i32*, i32* }
Revert r273313 "[NVPTX] Improve lowering of byval args of device functions." The change causes llvm crash in some unoptimized builds. llvm-svn: 274163
2016-06-30 04:51:15 +08:00
define void @ptr_in_byval(%struct.S* byval %input, i32* %output) {
; CHECK-LABEL: .visible .entry ptr_in_byval(
; CHECK: cvta.to.global.u64
; CHECK: cvta.to.global.u64
[NVPTX] convert pointers in byval kernel arguments to global Summary: For example, in struct S { int *x; int *y; }; __global__ void foo(S s) { int *b = s.y; // use b } "b" is guaranteed to point to global. NVPTX should emit ld.global/st.global for accessing "b". Reviewers: jholewinski Subscribers: llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D11505 llvm-svn: 243790
2015-08-01 05:44:14 +08:00
%b_ptr = getelementptr inbounds %struct.S, %struct.S* %input, i64 0, i32 1
%b = load i32*, i32** %b_ptr, align 4
%v = load i32, i32* %b, align 4
Revert r273313 "[NVPTX] Improve lowering of byval args of device functions." The change causes llvm crash in some unoptimized builds. llvm-svn: 274163
2016-06-30 04:51:15 +08:00
; CHECK: ld.global.u32
[NVPTX] convert pointers in byval kernel arguments to global Summary: For example, in struct S { int *x; int *y; }; __global__ void foo(S s) { int *b = s.y; // use b } "b" is guaranteed to point to global. NVPTX should emit ld.global/st.global for accessing "b". Reviewers: jholewinski Subscribers: llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D11505 llvm-svn: 243790
2015-08-01 05:44:14 +08:00
store i32 %v, i32* %output, align 4
Revert r273313 "[NVPTX] Improve lowering of byval args of device functions." The change causes llvm crash in some unoptimized builds. llvm-svn: 274163
2016-06-30 04:51:15 +08:00
; CHECK: st.global.u32
[NVPTX] convert pointers in byval kernel arguments to global Summary: For example, in struct S { int *x; int *y; }; __global__ void foo(S s) { int *b = s.y; // use b } "b" is guaranteed to point to global. NVPTX should emit ld.global/st.global for accessing "b". Reviewers: jholewinski Subscribers: llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D11505 llvm-svn: 243790
2015-08-01 05:44:14 +08:00
ret void
}
!nvvm.annotations = !{!0, !1, !2}
[NVPTX] roll forward r239082 NVPTXISelDAGToDAG translates "addrspacecast to param" to NVPTX::nvvm_ptr_gen_to_param Added an llc test in bug21465. llvm-svn: 239100
2015-06-05 05:28:26 +08:00
!0 = !{void (float*, float*)* @kernel, !"kernel", i32 1}
[NVPTX] noop when kernel pointers are already global Summary: Some front ends make kernel pointers global already. In that case, handlePointerParams does nothing. Test Plan: more tests in lower-kernel-ptr-arg.ll Reviewers: grosser Subscribers: jholewinski, llvm-commits Differential Revision: http://reviews.llvm.org/D10779 llvm-svn: 240849
2015-06-27 06:35:43 +08:00
!1 = !{void (float addrspace(1)*, float addrspace(1)*)* @kernel2, !"kernel", i32 1}
Revert r273313 "[NVPTX] Improve lowering of byval args of device functions." The change causes llvm crash in some unoptimized builds. llvm-svn: 274163
2016-06-30 04:51:15 +08:00
!2 = !{void (%struct.S*, i32*)* @ptr_in_byval, !"kernel", i32 1}