File: loop-schedule.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 (84 lines) | stat: -rw-r--r-- 3,120 bytes parent folder | download | duplicates (10)
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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes='licm,guard-widening,licm' -verify-memoryssa -debug-pass-manager < %s 2>&1 | FileCheck %s

; Main point of this test is to check the scheduling -- there should be
; no analysis passes needed between LICM and LoopGuardWidening

; CHECK: LICMPass
; CHECK-NEXT: GuardWideningPass
; CHECK-NEXT: LICMPass

declare void @llvm.experimental.guard(i1,...)

define void @iter(i32 %a, i32 %b, ptr %c_p) {
; CHECK-LABEL: @iter(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[B_GW_FR:%.*]] = freeze i32 [[B:%.*]]
; CHECK-NEXT:    [[COND_0:%.*]] = icmp ult i32 [[A:%.*]], 10
; CHECK-NEXT:    [[COND_1:%.*]] = icmp ult i32 [[B_GW_FR]], 10
; CHECK-NEXT:    [[WIDE_CHK:%.*]] = and i1 [[COND_0]], [[COND_1]]
; CHECK-NEXT:    call void (i1, ...) @llvm.experimental.guard(i1 [[WIDE_CHK]]) [ "deopt"() ]
; CHECK-NEXT:    [[CND:%.*]] = load i1, ptr [[C_P:%.*]], align 1
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    br i1 [[CND]], label [[LOOP]], label [[LEAVE_LOOPEXIT:%.*]]
; CHECK:       leave.loopexit:
; CHECK-NEXT:    br label [[LEAVE:%.*]]
; CHECK:       leave:
; CHECK-NEXT:    ret void
;

entry:
  %cond_0 = icmp ult i32 %a, 10
  call void (i1, ...) @llvm.experimental.guard(i1 %cond_0) [ "deopt"() ]
  br label %loop

loop:                                             ; preds = %loop.preheader, %loop
  %cond_1 = icmp ult i32 %b, 10
  call void (i1, ...) @llvm.experimental.guard(i1 %cond_1) [ "deopt"() ]
  %cnd = load i1, ptr %c_p
  br i1 %cnd, label %loop, label %leave.loopexit

leave.loopexit:                                   ; preds = %loop
  br label %leave

leave:                                            ; preds = %leave.loopexit, %entry
  ret void
}

define void @within_loop(i32 %a, i32 %b, ptr %c_p) {
; CHECK-LABEL: @within_loop(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[B_GW_FR:%.*]] = freeze i32 [[B:%.*]]
; CHECK-NEXT:    [[COND_0:%.*]] = icmp ult i32 [[A:%.*]], 10
; CHECK-NEXT:    [[COND_1:%.*]] = icmp ult i32 [[B_GW_FR]], 10
; CHECK-NEXT:    [[WIDE_CHK:%.*]] = and i1 [[COND_0]], [[COND_1]]
; CHECK-NEXT:    call void (i1, ...) @llvm.experimental.guard(i1 [[WIDE_CHK]]) [ "deopt"() ]
; CHECK-NEXT:    [[CND:%.*]] = load i1, ptr [[C_P:%.*]], align 1
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    br i1 [[CND]], label [[LOOP]], label [[LEAVE_LOOPEXIT:%.*]]
; CHECK:       leave.loopexit:
; CHECK-NEXT:    br label [[LEAVE:%.*]]
; CHECK:       leave:
; CHECK-NEXT:    ret void
;

entry:
  br label %loop

loop:                                             ; preds = %loop.preheader, %loop
  %cond_0 = icmp ult i32 %a, 10
  call void (i1, ...) @llvm.experimental.guard(i1 %cond_0) [ "deopt"() ]
  %cond_1 = icmp ult i32 %b, 10
  call void (i1, ...) @llvm.experimental.guard(i1 %cond_1) [ "deopt"() ]
  %cnd = load i1, ptr %c_p
  br i1 %cnd, label %loop, label %leave.loopexit

leave.loopexit:                                   ; preds = %loop
  br label %leave

leave:                                            ; preds = %leave.loopexit, %entry
  ret void
}