no-stack-arg-probe.ll
827 Bytes
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
32
33
34
35
36
37
38
; This test is attempting to detect that the compiler disables stack
; probe calls when the corresponding option is specified.
;
; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s
target datalayout = "e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32"
define i32 @test1() "no-stack-arg-probe" {
%buffer = alloca [4095 x i8]
ret i32 0
; CHECK-LABEL: _test1:
; CHECK-NOT: movl $4095, %eax
; CHECK: subl $4095, %esp
; CHECK-NOT: calll __chkstk
}
define i32 @test2() "no-stack-arg-probe" {
%buffer = alloca [4096 x i8]
ret i32 0
; CHECK-LABEL: _test2:
; CHECK-NOT: movl $4096, %eax
; CHECK: subl $4096, %esp
; CHECK-NOT: calll __chkstk
}
define i32 @test3(i32 %size) "no-stack-arg-probe" {
%buffer = alloca i8, i32 %size
ret i32 0
; CHECK-LABEL: _test3:
; CHECK: subl {{.*}}, %esp
; CHECK-NOT: calll __chkstk
}