aboutsummaryrefslogtreecommitdiff
path: root/llvm/test/Transforms/LowerConstantIntrinsics/crash-on-large-allocas.ll
blob: 171eb3e925d49b216c2eb2703cecdffe3586f1e4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
; RUN: opt -S -passes=lower-constant-intrinsics %s -o - | FileCheck %s
;
; Ensure that we don't {crash,return a bad value} when given an alloca larger
; than what a pointer can represent.

target datalayout = "p:16:16"

; CHECK-LABEL: @alloca_overflow_is_unknown(
define i16 @alloca_overflow_is_unknown() {
  %i = alloca i8, i32 65537
  %j = call i16 @llvm.objectsize.i16.p0(ptr %i, i1 false, i1 false, i1 false)
  ; CHECK: ret i16 -1
  ret i16 %j
}

declare i16 @llvm.objectsize.i16.p0(ptr, i1, i1, i1)