File: dynamic-alloca.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (22 lines) | stat: -rw-r--r-- 767 bytes parent folder | download | duplicates (18) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s

@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1

; Variable sized alloca
;  safestack attribute
; Requires protector.
define void @foo(i32 %n) nounwind uwtable safestack {
entry:
  ; CHECK: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
  %n.addr = alloca i32, align 4
  %a = alloca i32*, align 8
  store i32 %n, i32* %n.addr, align 4
  %0 = load i32, i32* %n.addr, align 4
  %conv = sext i32 %0 to i64
  %1 = alloca i8, i64 %conv
  %2 = bitcast i8* %1 to i32*
  store i32* %2, i32** %a, align 8
  ; CHECK: store i8* %[[SP:.*]], i8** @__safestack_unsafe_stack_ptr
  ret void
}