File: loop-strength-reduce-crash.ll

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-- 689 bytes parent folder | download | duplicates (9)
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: opt -loop-reduce < %s -o /dev/null

; LSR doesn't actually do anything on this input; just check that it doesn't
; crash while building the compatible type for the IV (by virtue of using
; INT64_MAX as a constant in the loop).

target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.12.0"

define void @foo() {
entry:
  br label %for

for: 
  %0 = phi i64 [ %add, %for ], [ undef, %entry ]
  %next = phi i32 [ %inc, %for ], [ undef, %entry ]
  store i32 %next, ptr undef, align 4
  %add = add i64 %0, 9223372036854775807
  %inc = add nsw i32 %next, 1
  br i1 undef, label %exit, label %for

exit:
  store i64 %add, ptr undef
  ret void
}