File: divergence-driven-negsubinlineconst.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (28 lines) | stat: -rw-r--r-- 1,166 bytes parent folder | download
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
; RUN:  llc -march=amdgcn -stop-after=amdgpu-isel < %s | FileCheck -enable-var-scope -check-prefixes=GCN,SI %s
; RUN:  llc -march=amdgcn -mcpu=gfx900 -stop-after=amdgpu-isel < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX900 %s

; FUNC-LABEL: {{^}}uniform_add_SIC:
; GCN: S_SUB_I32 killed %{{[0-9]+}}, 32
define amdgpu_kernel void @uniform_add_SIC(i32 addrspace(1)* %out, i32 addrspace(1)* %in) #0 {
  %a = load i32, i32 addrspace(1)* %in
  %result = add i32 %a, -32
  store i32 %result, i32 addrspace(1)* %out
  ret void
}

; FUNC-LABEL: {{^}}uniform_add_SIC:
; SI: V_SUB_CO_U32_e64 killed %{{[0-9]+}}, 32
; GFX900: V_SUB_U32_e64 killed %{{[0-9]+}}, 32
define amdgpu_kernel void @divergent_add_SIC(i32 addrspace(1)* %out, i32 addrspace(1)* %in) #0 {
  %tid = call i32 @llvm.amdgcn.workitem.id.x()
  %gep = getelementptr inbounds i32, i32 addrspace(1)* %in, i32 %tid
  %a = load volatile i32, i32 addrspace(1)* %gep
  %result = add i32 %a, -32
  store i32 %result, i32 addrspace(1)* %out
  ret void
}

declare i32 @llvm.amdgcn.workitem.id.x() #1

attributes #0 = { nounwind }
attributes #1 = { nounwind readnone speculatable }