File: pr24354.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 (33 lines) | stat: -rw-r--r-- 929 bytes parent folder | download | duplicates (12)
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
; RUN: opt -passes=instcombine -S < %s | FileCheck %s

; This used to crash opt

@c = common global i32 0, align 4
@b = common global i32 0, align 4
@a = common global i16 0, align 2
@d = common global i32 0, align 4

define void @fn3() {
; CHECK: @fn3
bb:
  %tmp = load i32, ptr @c, align 4
  %tmp1 = icmp eq i32 %tmp, 0
  br i1 %tmp1, label %bb2, label %bb6

bb2:                                              ; preds = %bb
  %tmp3 = load i32, ptr @b, align 4
  %tmp.i = add nsw i32 255, %tmp3
  %tmp5 = icmp ugt i32 %tmp.i, 254
  br label %bb6

bb6:                                              ; preds = %bb, %bb2
  %tmp7 = phi i1 [ true, %bb ], [ %tmp5, %bb2 ]
  %tmp8 = zext i1 %tmp7 to i32
  %tmp10 = icmp eq i32 %tmp8, 0
  %tmp12 = load i16, ptr @a, align 2
  %tmp14 = icmp ne i16 %tmp12, 0
  %tmp16 = select i1 %tmp10, i1 false, i1 %tmp14
  %tmp17 = zext i1 %tmp16 to i32
  store i32 %tmp17, ptr @d, align 4
  ret void
}