File: strncpy-2.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 (26 lines) | stat: -rw-r--r-- 913 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
 
; Test that the strncpy folder avoids simplifying a call to the function
; declared with an incompatible type.
;
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; Test that the strncpy library call simplifier works correctly.
;
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"

@hello = constant [6 x i8] c"hello\00"
@a = common global [32 x i8] zeroinitializer, align 1

declare i16 @strncpy(ptr, ptr, i32)

; Check that 'strncpy' functions with the wrong prototype aren't simplified.

define void @test_no_simplify1() {
; CHECK-LABEL: @test_no_simplify1(
; CHECK-NEXT:    [[TMP1:%.*]] = call i16 @strncpy(ptr nonnull @a, ptr nonnull @hello, i32 6)
; CHECK-NEXT:    ret void
;

  call i16 @strncpy(ptr @a, ptr @hello, i32 6)
  ret void
}