File: dynamic-alloca.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (23 lines) | stat: -rw-r--r-- 901 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
 
; 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
; RUN: opt -passes=safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
; RUN: opt -passes=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 ptr, ptr @__safestack_unsafe_stack_ptr
  %n.addr = alloca i32, align 4
  %a = alloca ptr, align 8
  store i32 %n, ptr %n.addr, align 4
  %0 = load i32, ptr %n.addr, align 4
  %conv = sext i32 %0 to i64
  %1 = alloca i8, i64 %conv
  store ptr %1, ptr %a, align 8
  ; CHECK: store ptr %[[SP:.*]], ptr @__safestack_unsafe_stack_ptr
  ret void
}