1 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 2 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: sg [[REG2]], {{[0-9]*}}(%r15) 15 16 define i32 @test_stack_guard() #0 { 17 entry: 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) 24 ret i32 0 25 } 26 27 ; Function Attrs: nounwind 28 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) 29 30 declare void @foo3(i32*) 31 32 ; Function Attrs: nounwind 33 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) 34 35 attributes #0 = { sspstrong } 36
