File: swp-loop-carried.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (46 lines) | stat: -rw-r--r-- 1,393 bytes parent folder | download | duplicates (22) 
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 -march=hexagon -fp-contract=fast -enable-pipeliner < %s
; REQUIRES: asserts

; A Phi that depends on another Phi is loop carried.

define void @f0() #0 {
b0:
  br label %b1

b1:                                               ; preds = %b1, %b0
  br i1 undef, label %b1, label %b2

b2:                                               ; preds = %b1
  br i1 undef, label %b3, label %b8

b3:                                               ; preds = %b2
  br i1 undef, label %b4, label %b5

b4:                                               ; preds = %b4, %b3
  %v0 = phi i32 [ %v5, %b4 ], [ 2, %b3 ]
  %v1 = phi float [ %v4, %b4 ], [ undef, %b3 ]
  %v2 = phi float [ %v1, %b4 ], [ undef, %b3 ]
  %v3 = fsub float 0.000000e+00, %v2
  %v4 = fadd float %v3, undef
  %v5 = add nsw i32 %v0, 1
  %v6 = icmp eq i32 %v5, undef
  br i1 %v6, label %b5, label %b4

b5:                                               ; preds = %b4, %b3
  %v7 = phi float [ undef, %b3 ], [ %v1, %b4 ]
  br i1 false, label %b6, label %b7

b6:                                               ; preds = %b5
  br label %b7

b7:                                               ; preds = %b6, %b5
  br label %b9

b8:                                               ; preds = %b2
  ret void

b9:                                               ; preds = %b9, %b7
  br label %b9
}

attributes #0 = { nounwind "target-cpu"="hexagonv55" }