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|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -passes=nvptx-tag-invariant-loads < %s -mcpu=sm_80 | FileCheck %s --check-prefix=OPT
; RUN: llc -o - < %s -mcpu=sm_80 | FileCheck %s --check-prefix=PTX
target triple = "nvptx-unknown-cuda"
define ptx_kernel void @basic(ptr noalias readonly %a, ptr %out) {
; OPT-LABEL: define ptx_kernel void @basic(
; OPT-SAME: ptr noalias readonly [[A:%.*]], ptr [[OUT:%.*]]) #[[ATTR0:[0-9]+]] {
; OPT-NEXT: [[A_GLOBAL:%.*]] = addrspacecast ptr [[A]] to ptr addrspace(1)
; OPT-NEXT: [[VAL:%.*]] = load float, ptr addrspace(1) [[A_GLOBAL]], align 4, !invariant.load [[META0:![0-9]+]]
; OPT-NEXT: store float [[VAL]], ptr [[OUT]], align 4
; OPT-NEXT: ret void
;
; PTX-LABEL: basic(
; PTX: {
; PTX-NEXT: .reg .b32 %r<6>;
; PTX-EMPTY:
; PTX-NEXT: // %bb.0:
; PTX-NEXT: ld.param.b32 %r1, [basic_param_0];
; PTX-NEXT: cvta.to.global.u32 %r2, %r1;
; PTX-NEXT: ld.param.b32 %r3, [basic_param_1];
; PTX-NEXT: cvta.to.global.u32 %r4, %r3;
; PTX-NEXT: ld.global.nc.b32 %r5, [%r2];
; PTX-NEXT: st.global.b32 [%r4], %r5;
; PTX-NEXT: ret;
%a_global = addrspacecast ptr %a to ptr addrspace(1)
%val = load float, ptr addrspace(1) %a_global
store float %val, ptr %out
ret void
}
define ptx_kernel void @select(ptr noalias readonly %a, ptr noalias readonly %b, i1 %c, ptr %out) {
; OPT-LABEL: define ptx_kernel void @select(
; OPT-SAME: ptr noalias readonly [[A:%.*]], ptr noalias readonly [[B:%.*]], i1 [[C:%.*]], ptr [[OUT:%.*]]) #[[ATTR0]] {
; OPT-NEXT: [[SELECT:%.*]] = select i1 [[C]], ptr [[A]], ptr [[B]]
; OPT-NEXT: [[SELECT_GLOBAL:%.*]] = addrspacecast ptr [[SELECT]] to ptr addrspace(1)
; OPT-NEXT: [[VAL:%.*]] = load i32, ptr addrspace(1) [[SELECT_GLOBAL]], align 4, !invariant.load [[META0]]
; OPT-NEXT: store i32 [[VAL]], ptr [[OUT]], align 4
; OPT-NEXT: ret void
;
; PTX-LABEL: select(
; PTX: {
; PTX-NEXT: .reg .pred %p<2>;
; PTX-NEXT: .reg .b16 %rs<3>;
; PTX-NEXT: .reg .b32 %r<9>;
; PTX-EMPTY:
; PTX-NEXT: // %bb.0:
; PTX-NEXT: ld.param.b8 %rs1, [select_param_2];
; PTX-NEXT: and.b16 %rs2, %rs1, 1;
; PTX-NEXT: setp.ne.b16 %p1, %rs2, 0;
; PTX-NEXT: ld.param.b32 %r1, [select_param_0];
; PTX-NEXT: cvta.to.global.u32 %r2, %r1;
; PTX-NEXT: ld.param.b32 %r3, [select_param_1];
; PTX-NEXT: cvta.to.global.u32 %r4, %r3;
; PTX-NEXT: ld.param.b32 %r5, [select_param_3];
; PTX-NEXT: cvta.to.global.u32 %r6, %r5;
; PTX-NEXT: selp.b32 %r7, %r2, %r4, %p1;
; PTX-NEXT: ld.global.nc.b32 %r8, [%r7];
; PTX-NEXT: st.global.b32 [%r6], %r8;
; PTX-NEXT: ret;
%select = select i1 %c, ptr %a, ptr %b
%select_global = addrspacecast ptr %select to ptr addrspace(1)
%val = load i32, ptr addrspace(1) %select_global
store i32 %val, ptr %out
ret void
}
define void @not_kernel(ptr noalias readonly %a, ptr %out) {
; OPT-LABEL: define void @not_kernel(
; OPT-SAME: ptr noalias readonly [[A:%.*]], ptr [[OUT:%.*]]) #[[ATTR0]] {
; OPT-NEXT: [[A_GLOBAL:%.*]] = addrspacecast ptr [[A]] to ptr addrspace(1)
; OPT-NEXT: [[VAL:%.*]] = load float, ptr addrspace(1) [[A_GLOBAL]], align 4
; OPT-NEXT: store float [[VAL]], ptr [[OUT]], align 4
; OPT-NEXT: ret void
;
; PTX-LABEL: not_kernel(
; PTX: {
; PTX-NEXT: .reg .b32 %r<5>;
; PTX-EMPTY:
; PTX-NEXT: // %bb.0:
; PTX-NEXT: ld.param.b32 %r1, [not_kernel_param_0];
; PTX-NEXT: cvta.to.global.u32 %r2, %r1;
; PTX-NEXT: ld.param.b32 %r3, [not_kernel_param_1];
; PTX-NEXT: ld.global.b32 %r4, [%r2];
; PTX-NEXT: st.b32 [%r3], %r4;
; PTX-NEXT: ret;
%a_global = addrspacecast ptr %a to ptr addrspace(1)
%val = load float, ptr addrspace(1) %a_global
store float %val, ptr %out
ret void
}
%struct.S2 = type { i64, i64 }
@G = private unnamed_addr constant %struct.S2 { i64 1, i64 1 }, align 8
define ptx_kernel void @global_load(ptr noalias readonly %a, i1 %c, ptr %out) {
; OPT-LABEL: define ptx_kernel void @global_load(
; OPT-SAME: ptr noalias readonly [[A:%.*]], i1 [[C:%.*]], ptr [[OUT:%.*]]) #[[ATTR0]] {
; OPT-NEXT: [[G_GLOBAL:%.*]] = addrspacecast ptr @G to ptr addrspace(1)
; OPT-NEXT: [[A_GLOBAL:%.*]] = addrspacecast ptr [[A]] to ptr addrspace(1)
; OPT-NEXT: [[SELECT:%.*]] = select i1 [[C]], ptr addrspace(1) [[G_GLOBAL]], ptr addrspace(1) [[A_GLOBAL]]
; OPT-NEXT: [[VAL:%.*]] = load i64, ptr addrspace(1) [[SELECT]], align 8, !invariant.load [[META0]]
; OPT-NEXT: store i64 [[VAL]], ptr [[OUT]], align 8
; OPT-NEXT: ret void
;
; PTX-LABEL: global_load(
; PTX: {
; PTX-NEXT: .reg .pred %p<2>;
; PTX-NEXT: .reg .b16 %rs<3>;
; PTX-NEXT: .reg .b32 %r<7>;
; PTX-NEXT: .reg .b64 %rd<2>;
; PTX-EMPTY:
; PTX-NEXT: // %bb.0:
; PTX-NEXT: ld.param.b8 %rs1, [global_load_param_1];
; PTX-NEXT: and.b16 %rs2, %rs1, 1;
; PTX-NEXT: setp.ne.b16 %p1, %rs2, 0;
; PTX-NEXT: ld.param.b32 %r1, [global_load_param_0];
; PTX-NEXT: cvta.to.global.u32 %r2, %r1;
; PTX-NEXT: ld.param.b32 %r3, [global_load_param_2];
; PTX-NEXT: cvta.to.global.u32 %r4, %r3;
; PTX-NEXT: mov.b32 %r5, G;
; PTX-NEXT: selp.b32 %r6, %r5, %r2, %p1;
; PTX-NEXT: ld.global.nc.b64 %rd1, [%r6];
; PTX-NEXT: st.global.b64 [%r4], %rd1;
; PTX-NEXT: ret;
%g_global = addrspacecast ptr @G to ptr addrspace(1)
%a_global = addrspacecast ptr %a to ptr addrspace(1)
%select = select i1 %c, ptr addrspace(1) %g_global, ptr addrspace(1) %a_global
%val = load i64, ptr addrspace(1) %select
store i64 %val, ptr %out
ret void
}
;.
; OPT: [[META0]] = !{}
;.
|
