| ; RUN: opt < %s -S -nvptx-atomic-lower | FileCheck %s |
| |
| ; This test ensures that there is a legal way for ptx to lower atomics |
| ; on local memory. Here, we demonstrate this by lowering them to simple |
| ; load and stores. |
| |
| 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" |
| target triple = "nvptx64-unknown-unknown" |
| |
| define double @kernel(ptr addrspace(5) %ptr, double %val) { |
| %res = atomicrmw fadd ptr addrspace(5) %ptr, double %val monotonic, align 8 |
| ret double %res |
| ; CHECK: %1 = load double, ptr addrspace(5) %ptr, align 8 |
| ; CHECK-NEXT: %new = fadd double %1, %val |
| ; CHECK-NEXT: store double %new, ptr addrspace(5) %ptr, align 8 |
| ; CHECK-NEXT: ret double %1 |
| } |
| |
