File: generic-vreg-undef-use.mir

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (25 lines) | stat: -rw-r--r-- 843 bytes parent folder | download | duplicates (11) 
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
 
# RUN: not --crash llc -march=aarch64 -o /dev/null -run-pass=none -verify-machineinstrs %s 2>&1 | FileCheck %s
# REQUIRES: aarch64-registered-target

# Undef uses are illegal for generic vregs.

---
name:            test_undef_use
liveins:
body:             |
  bb.0:
    %0:_(s32) = G_CONSTANT i32 0

    ; Test generic instruction
    ; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***
    G_STORE %0, undef %1:_(p0) :: (store (s32))

    ; Make sure this fails on a post-isel generic instruction.
    ; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***
    $x0 = COPY undef %2:_(s64)

    ; Make sure this fails with a target instruction
    ; CHECK: *** Bad machine code: Generic virtual register use cannot be undef ***
    RET_ReallyLR implicit $x0, implicit undef %3:_(s32)
...