File: variable-sized-memcpy-uninit.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 (31 lines) | stat: -rw-r--r-- 1,062 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
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"

define void @test(i64 %size) {
; CHECK-LABEL: @test(
; CHECK-NEXT:    [[SRC:%.*]] = alloca i8, i64 [[SIZE:%.*]], align 1
; CHECK-NEXT:    [[DST:%.*]] = alloca i8, i64 [[SIZE]], align 1
; CHECK-NEXT:    ret void
;
  %src = alloca i8, i64 %size
  %dst = alloca i8, i64 %size
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %dst, ptr align 8 %src, i64 %size, i1 false)

  ret void
}

define void @test2(i64 %size1, i64 %size2, i64 %cpy_size) {
; CHECK-LABEL: @test2(
; CHECK-NEXT:    [[SRC:%.*]] = alloca i8, i64 [[SIZE1:%.*]], align 1
; CHECK-NEXT:    [[DST:%.*]] = alloca i8, i64 [[SIZE2:%.*]], align 1
; CHECK-NEXT:    ret void
;
  %src = alloca i8, i64 %size1
  %dst = alloca i8, i64 %size2
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %dst, ptr align 8 %src, i64 %cpy_size, i1 false)

  ret void
}

declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1)