File: private-memory-atomics.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (32 lines) | stat: -rw-r--r-- 1,520 bytes parent folder | download | duplicates (13)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tahiti < %s
; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tonga < %s

; This works because promote allocas pass replaces these with LDS atomics.

; Private atomics have no real use, but at least shouldn't crash on it.
define amdgpu_kernel void @atomicrmw_private(i32 addrspace(1)* %out, i32 %in) nounwind {
entry:
  %tmp = alloca [2 x i32], addrspace(5)
  %tmp1 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(5)* %tmp, i32 0, i32 0
  %tmp2 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(5)* %tmp, i32 0, i32 1
  store i32 0, i32 addrspace(5)* %tmp1
  store i32 1, i32 addrspace(5)* %tmp2
  %tmp3 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(5)* %tmp, i32 0, i32 %in
  %tmp4 = atomicrmw add i32 addrspace(5)* %tmp3, i32 7 acq_rel
  store i32 %tmp4, i32 addrspace(1)* %out
  ret void
}

define amdgpu_kernel void @cmpxchg_private(i32 addrspace(1)* %out, i32 %in) nounwind {
entry:
  %tmp = alloca [2 x i32], addrspace(5)
  %tmp1 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(5)* %tmp, i32 0, i32 0
  %tmp2 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(5)* %tmp, i32 0, i32 1
  store i32 0, i32 addrspace(5)* %tmp1
  store i32 1, i32 addrspace(5)* %tmp2
  %tmp3 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(5)* %tmp, i32 0, i32 %in
  %tmp4 = cmpxchg i32 addrspace(5)* %tmp3, i32 0, i32 1 acq_rel monotonic
  %val = extractvalue { i32, i1 } %tmp4, 0
  store i32 %val, i32 addrspace(1)* %out
  ret void
}