File: partial.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 (54 lines) | stat: -rw-r--r-- 1,027 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
 
; RUN: opt < %s -S -passes=loop-unroll -mtriple aarch64 -mcpu=cortex-a57 | FileCheck %s

; Partial unroll 8 times for this loop.
define void @unroll1() nounwind {
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %inc, %loop ]
  %inc = add i32 %iv, 1
  %exitcnd = icmp uge i32 %inc, 1024
  br i1 %exitcnd, label %exit, label %loop

exit:
  ret void
}

; CHECK: add{{.*}}, 8
; CHECK-NEXT: icmp

; Partial unroll 16 times for this loop.
define void @unroll2() nounwind {
entry:
  br label %loop1

loop1:
  %iv1 = phi i32 [ 0, %entry ], [ %inc1, %loop1.latch ]
  br label %loop2.header

loop2.header:
  br label %loop2

loop2:
  %iv2 = phi i32 [ 0, %loop2.header ], [ %inc2, %loop2 ]
  %inc2 = add i32 %iv2, 1
  %exitcnd2 = icmp uge i32 %inc2, 1024
  br i1 %exitcnd2, label %exit2, label %loop2

exit2:
  br label %loop1.latch

loop1.latch:
  %inc1 = add i32 %iv1, 1
  %exitcnd1 = icmp uge i32 %inc1, 1024
  br i1 %exitcnd2, label %exit, label %loop1

exit:
  ret void
}



; CHECK: add{{.*}}, 16
; CHECK-NEXT: icmp