File: TailDuplication-convergent.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (46 lines) | stat: -rw-r--r-- 1,089 bytes parent folder | download | duplicates (14) 
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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
 
; RUN: llc -O2 -tail-dup-size=100 -enable-tail-merge=0 < %s | FileCheck %s
; RUN: %if ptxas %{ llc -O2 -tail-dup-size=100 -enable-tail-merge=0 < %s | %ptxas-verify %}
target triple = "nvptx64-nvidia-cuda"

declare void @foo()
declare void @llvm.nvvm.barrier0()

; syncthreads shouldn't be duplicated.
; CHECK: .func call_syncthreads
; CHECK: bar.sync
; CHECK-NOT: bar.sync
define void @call_syncthreads(ptr %a, ptr %b, i1 %cond, i1 %cond2) nounwind {
  br i1 %cond, label %L1, label %L2
  br i1 %cond2, label %Ret, label %L1
Ret:
  ret void
L1:
  store i32 0, ptr %a
  br label %L42
L2:
  store i32 1, ptr %a
  br label %L42
L42:
  call void @llvm.nvvm.barrier0()
  br label %Ret
}

; Check that call_syncthreads really does trigger tail duplication.
; CHECK: .func call_foo
; CHECK: call
; CHECK: call
define void @call_foo(ptr %a, ptr %b, i1 %cond, i1 %cond2) nounwind {
  br i1 %cond, label %L1, label %L2
  br i1 %cond2, label %Ret, label %L1
Ret:
  ret void
L1:
  store i32 0, ptr %a
  br label %L42
L2:
  store i32 1, ptr %a
  br label %L42
L42:
  call void @foo()
  br label %Ret
}