1 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
3 ; CHECK-LABEL: @test_stack_guard
4 ; CHECK: ear [[REG1:%r[1-9][0-9]?]], %a0
5 ; CHECK: sllg [[REG1]], [[REG1]], 32
6 ; CHECK: ear [[REG1]], %a1
7 ; CHECK: lg [[REG1]], 40([[REG1]])
8 ; CHECK: stg [[REG1]], {{[0-9]*}}(%r15)
9 ; CHECK: brasl %r14, foo3@PLT
10 ; CHECK: ear [[REG2:%r[1-9][0-9]?]], %a0
11 ; CHECK: sllg [[REG2]], [[REG2]], 32
12 ; CHECK: ear [[REG2]], %a1
13 ; CHECK: lg [[REG2]], 40([[REG2]])
14 ; CHECK: cg [[REG2]], {{[0-9]*}}(%r15)
16 define i32 @test_stack_guard() #0 {
18 %a1 = alloca [256 x i32], align 4
19 %0 = bitcast [256 x i32]* %a1 to i8*
20 call void @llvm.lifetime.start.p0i8(i64 1024, i8* %0)
21 %arraydecay = getelementptr inbounds [256 x i32], [256 x i32]* %a1, i64 0, i64 0
22 call void @foo3(i32* %arraydecay)
23 call void @llvm.lifetime.end.p0i8(i64 1024, i8* %0)
27 ; Function Attrs: nounwind
28 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
30 declare void @foo3(i32*)
32 ; Function Attrs: nounwind
33 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
35 attributes #0 = { sspstrong }