File: invariant-image-load.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (29 lines) | stat: -rw-r--r-- 1,564 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
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn -mcpu=gfx900 < %s | FileCheck %s -check-prefix=GFX9
; RUN: llc -global-isel -mtriple=amdgcn -mcpu=gfx900 < %s | FileCheck %s -check-prefix=GFX9

; Marking the image loads as invariant should allow both loads to be hoisted
; above both stores.
define amdgpu_ps void @test(<8 x i32> inreg %load, <8 x i32> inreg %store) {
; GFX9-LABEL: test:
; GFX9:       ; %bb.0:
; GFX9-NEXT:    v_mov_b32_e32 v0, 0
; GFX9-NEXT:    v_mov_b32_e32 v1, 1
; GFX9-NEXT:    image_load v2, v0, s[0:7] dmask:0x1 unorm
; GFX9-NEXT:    image_load v3, v1, s[0:7] dmask:0x1 unorm
; GFX9-NEXT:    s_waitcnt vmcnt(1)
; GFX9-NEXT:    image_store v2, v0, s[8:15] dmask:0x1 unorm
; GFX9-NEXT:    s_waitcnt vmcnt(1)
; GFX9-NEXT:    image_store v3, v1, s[8:15] dmask:0x1 unorm
; GFX9-NEXT:    s_endpgm
  %data0 = call float @llvm.amdgcn.image.load.1d.f32.i32(i32 1, i32 0, <8 x i32> %load, i32 0, i32 0), !invariant.load !0
  call void @llvm.amdgcn.image.store.1d.f32.i32(float %data0, i32 1, i32 0, <8 x i32> %store, i32 0, i32 0)
  %data1 = call float @llvm.amdgcn.image.load.1d.f32.i32(i32 1, i32 1, <8 x i32> %load, i32 0, i32 0), !invariant.load !0
  call void @llvm.amdgcn.image.store.1d.f32.i32(float %data1, i32 1, i32 1, <8 x i32> %store, i32 0, i32 0)
  ret void
}

declare float @llvm.amdgcn.image.load.1d.f32.i32(i32 immarg, i32, <8 x i32>, i32 immarg, i32 immarg)
declare void @llvm.amdgcn.image.store.1d.f32.i32(float, i32 immarg, i32, <8 x i32>, i32 immarg, i32 immarg)

!0 = !{}