1 ; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
2 ; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s
4 ; Use bar.sync to arrive at a pre-computed barrier number and
5 ; wait for all threads in CTA to also arrive:
6 define ptx_device void @test_barrier_named_cta() {
7 ; CHECK: mov.u32 %r[[REG0:[0-9]+]], 0;
8 ; CHECK: bar.sync %r[[REG0]];
9 ; CHECK: mov.u32 %r[[REG1:[0-9]+]], 10;
10 ; CHECK: bar.sync %r[[REG1]];
11 ; CHECK: mov.u32 %r[[REG2:[0-9]+]], 15;
12 ; CHECK: bar.sync %r[[REG2]];
14 call void @llvm.nvvm.barrier.n(i32 0)
15 call void @llvm.nvvm.barrier.n(i32 10)
16 call void @llvm.nvvm.barrier.n(i32 15)
20 ; Use bar.sync to arrive at a pre-computed barrier number and
21 ; wait for fixed number of cooperating threads to arrive:
22 define ptx_device void @test_barrier_named() {
23 ; CHECK: mov.u32 %r[[REG0A:[0-9]+]], 32;
24 ; CHECK: mov.u32 %r[[REG0B:[0-9]+]], 0;
25 ; CHECK: bar.sync %r[[REG0B]], %r[[REG0A]];
26 ; CHECK: mov.u32 %r[[REG1A:[0-9]+]], 352;
27 ; CHECK: mov.u32 %r[[REG1B:[0-9]+]], 10;
28 ; CHECK: bar.sync %r[[REG1B]], %r[[REG1A]];
29 ; CHECK: mov.u32 %r[[REG2A:[0-9]+]], 992;
30 ; CHECK: mov.u32 %r[[REG2B:[0-9]+]], 15;
31 ; CHECK: bar.sync %r[[REG2B]], %r[[REG2A]];
33 call void @llvm.nvvm.barrier(i32 0, i32 32)
34 call void @llvm.nvvm.barrier(i32 10, i32 352)
35 call void @llvm.nvvm.barrier(i32 15, i32 992)
39 declare void @llvm.nvvm.barrier(i32, i32)
40 declare void @llvm.nvvm.barrier.n(i32)