File: regalloc-liveout-undef.mir

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 (34 lines) | stat: -rw-r--r-- 978 bytes parent folder | download | duplicates (16) 
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
 
# RUN: llc -march=hexagon -run-pass liveintervals -run-pass machineverifier -run-pass simple-register-coalescing %s -o - | FileCheck %s
#
# If there is no consumer of the live intervals, the live intervals pass
# will be freed immediately after it runs, before the verifier. Add a
# user (register coalescer in this case), so that the verification will
# cover live intervals as well.
#
# Make sure that this compiles successfully.
# CHECK: undef %1.isub_lo:doubleregs = A2_addi %1.isub_lo, 1

---
name: fred
tracksRegLiveness: true

registers:
  - { id: 0, class: intregs }
  - { id: 1, class: doubleregs }
  - { id: 2, class: predregs }
  - { id: 3, class: doubleregs }
body: |
  bb.0:
    liveins: $d0
    successors: %bb.1
        %0 = IMPLICIT_DEF
        %1 = COPY $d0

  bb.1:
    successors: %bb.1
        %2 = C2_cmpgt %0, %1.isub_lo
        %3 = COPY %1
        %1 = COPY %3
        undef %1.isub_lo = A2_addi %1.isub_lo, 1
        J2_jump %bb.1, implicit-def $pc
...