File: implicit-null-check.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (24 lines) | stat: -rw-r--r-- 457 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; RUN: opt -passes=inline -inline-threshold=10 -S < %s | FileCheck %s

declare void @foo()

; CHECK-LABEL: @caller
; CHECK-NOT:   %res = call i64 @callee(ptr %p)
define i64 @caller(ptr %p) {
  %res = call i64 @callee(ptr %p)
  ret i64 %res
}

define i64 @callee(ptr %p) {
  %null_check = icmp eq ptr %p, null
  br i1 %null_check, label %is_null, label %non_null, !make.implicit !0

is_null:
  call void @foo()
  ret i64 0

non_null:
  ret i64 1
}

!0 = !{}