File: combine-anyext-crash.mir

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: 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 (42 lines) | stat: -rw-r--r-- 919 bytes parent folder | download | duplicates (24) 
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
 
# RUN: llc -O0 -run-pass=legalizer %s -o - | FileCheck %s
--- |
  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64--"
  
  define void @test_anyext_crash() {
  entry:
    br label %block2
  
  block2:
    %0 = trunc i16 0 to i8
    %1 = uitofp i8 %0 to double
    br label %block2
  }
  

...
---
name:            test_anyext_crash
alignment:       4
legalized:       false
registers:       
  - { id: 0, class: _, preferred-register: '' }
  - { id: 1, class: _, preferred-register: '' }
  - { id: 2, class: _, preferred-register: '' }
body:             |
  bb.1:
   ; Check we don't crash due to trying to legalize a dead instruction.
   ; CHECK-LABEL: test_anyext_crash
   ; CHECK-LABEL: bb.1:
    successors: %bb.2
  
    %0(s16) = G_CONSTANT i16 0
  
  bb.2:
    successors: %bb.2
  
    %1(s8) = G_TRUNC %0(s16)
    %2(s64) = G_UITOFP %1(s8)
    G_BR %bb.2

...