1 ; RUN: llc < %s | FileCheck %s
2 target triple = "nvptx64-nvidia-cuda"
4 declare void @llvm.nvvm.barrier0()
6 ; Load a value, then syncthreads. Branch, and use the loaded value only on one
7 ; side of the branch. The load shouldn't be sunk beneath the call, because
8 ; syncthreads is modeled as maystore.
9 define i32 @f(i32 %x, i32* %ptr, i1 %cond) {
12 %ptr_val = load i32, i32* %ptr
14 call void @llvm.nvvm.barrier0()
15 br i1 %cond, label %L1, label %L2
17 %ptr_val2 = add i32 %ptr_val, 100
20 %v4 = phi i32 [ %x, %Start ], [ %ptr_val2, %L1 ]
21 %v5 = add i32 %v4, 1000