File: dag-divergence.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (30 lines) | stat: -rw-r--r-- 1,147 bytes parent folder | download | duplicates (8)
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
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=fiji -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s

; GCN-LABEL: {{^}}private_load_maybe_divergent:
; GCN: buffer_load_dword
; GCN-NOT: s_load_dword s
; GCN: flat_load_dword
; GCN-NOT: s_load_dword s
define amdgpu_kernel void @private_load_maybe_divergent(ptr addrspace(4) %k, ptr %flat) {
  %load = load volatile i32, ptr addrspace(5) undef, align 4
  %gep = getelementptr inbounds i32, ptr addrspace(4) %k, i32 %load
  %maybe.not.uniform.load = load i32, ptr addrspace(4) %gep, align 4
  store i32 %maybe.not.uniform.load, ptr addrspace(1) undef
  ret void
}

; GCN-LABEL: {{^}}flat_load_maybe_divergent:
; GCN: s_load_dwordx4
; GCN-NOT: s_load
; GCN: flat_load_dword
; GCN-NOT: s_load
; GCN: flat_load_dword
; GCN-NOT: s_load
; GCN: flat_store_dword
define amdgpu_kernel void @flat_load_maybe_divergent(ptr addrspace(4) %k, ptr %flat) {
  %load = load i32, ptr %flat, align 4
  %gep = getelementptr inbounds i32, ptr addrspace(4) %k, i32 %load
  %maybe.not.uniform.load = load i32, ptr addrspace(4) %gep, align 4
  store i32 %maybe.not.uniform.load, ptr addrspace(1) undef
  ret void
}