File: remove-bbs.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 (29 lines) | stat: -rw-r--r-- 1,009 bytes parent folder | download | duplicates (4) 
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
 
; Test that llvm-reduce can remove uninteresting Basic Blocks, and remove them from instructions (i.e. SwitchInst, BranchInst and IndirectBrInst)
; Note: if an uninteresting BB is the default case for a switch, the instruction is removed altogether (since the default case cannot be replaced)
;
; RUN: llvm-reduce --delta-passes=basic-blocks --test %python --test-arg %p/Inputs/remove-bbs.py %s -o %t
; RUN: cat %t | FileCheck -implicit-check-not=uninteresting %s

define void @main() {
interesting:
  ; CHECK-NOT: switch i32 0, label %uninteresting
  switch i32 0, label %uninteresting [
    i32 0, label %uninteresting
  ]

uninteresting:
  ret void

interesting2:
  ; CHECK: switch i32 1, label %interesting3
  switch i32 1, label %interesting3 [
    ; CHECK-NOT: i32 0, label %uninteresting
    i32 0, label %uninteresting
    ; CHECK: i32 1, label %interesting3
    i32 1, label %interesting3
  ]

interesting3:
  ; CHECK: br label %interesting2
  br i1 true, label %interesting2, label %uninteresting
}