| ; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %s | FileCheck --check-prefix=CHECK-TLS-FS-40 %s |
| ; RUN: llc -mtriple=x86_64-pc-linux-gnu -stack-protector-guard=tls -o - < %s | FileCheck --check-prefix=CHECK-TLS-FS-40 %s |
| ; RUN: llc -mtriple=x86_64-pc-linux-gnu -stack-protector-guard=global -o - < %s | FileCheck --check-prefix=CHECK-GLOBAL %s |
| ; RUN: llc -mtriple=x86_64-pc-linux-gnu -stack-protector-guard-reg=fs -o - < %s | FileCheck --check-prefix=CHECK-TLS-FS-40 %s |
| ; RUN: llc -mtriple=x86_64-pc-linux-gnu -stack-protector-guard-reg=gs -o - < %s | FileCheck --check-prefix=CHECK-GS %s |
| ; RUN: llc -mtriple=x86_64-pc-linux-gnu -stack-protector-guard-offset=20 -o - < %s | FileCheck --check-prefix=CHECK-OFFSET %s |
| |
| ; CHECK-TLS-FS-40: movq %fs:40, %rax |
| ; CHECK-TLS-FS-40: movq %fs:40, %rax |
| ; CHECK-TLS-FS-40-NEXT: cmpq 16(%rsp), %rax |
| ; CHECK-TLS-FS-40-NEXT: jne .LBB0_2 |
| ; CHECK-TLS-FS-40: .LBB0_2: |
| ; CHECK-TLS-FS-40-NEXT: .cfi_def_cfa_offset 32 |
| ; CHECK-TLS-FS-40-NEXT: callq __stack_chk_fail |
| |
| ; CHECK-GS: movq %gs:40, %rax |
| ; CHECK-GS: movq %gs:40, %rax |
| ; CHECK-GS-NEXT: cmpq 16(%rsp), %rax |
| ; CHECK-GS-NEXT: jne .LBB0_2 |
| ; CHECK-GS: .LBB0_2: |
| ; CHECK-GS-NEXT: .cfi_def_cfa_offset 32 |
| ; CHECK-GS-NEXT: callq __stack_chk_fail |
| |
| ; CHECK-OFFSET: movq %fs:20, %rax |
| ; CHECK-OFFSET: movq %fs:20, %rax |
| ; CHECK-OFFSET-NEXT: cmpq 16(%rsp), %rax |
| ; CHECK-OFFSET-NEXT: jne .LBB0_2 |
| ; CHECK-OFFSET: .LBB0_2: |
| ; CHECK-OFFSET-NEXT: .cfi_def_cfa_offset 32 |
| ; CHECK-OFFSET-NEXT: callq __stack_chk_fail |
| |
| ; CHECK-GLOBAL: movq __stack_chk_guard(%rip), %rax |
| ; CHECK-GLOBAL: movq __stack_chk_guard(%rip), %rax |
| ; CHECK-GLOBAL-NEXT: cmpq 16(%rsp), %rax |
| ; CHECK-GLOBAL-NEXT: jne .LBB0_2 |
| ; CHECK-GLOBAL: .LBB0_2: |
| ; CHECK-GLOBAL-NEXT: .cfi_def_cfa_offset 32 |
| ; CHECK-GLOBAL-NEXT: callq __stack_chk_fail |
| |
| ; ModuleID = 't.c' |
| @.str = private unnamed_addr constant [14 x i8] c"stackoverflow\00", align 1 |
| @a = dso_local local_unnamed_addr global i8* null, align 8 |
| |
| ; Function Attrs: nounwind sspreq uwtable writeonly |
| define dso_local i32 @main() local_unnamed_addr #0 { |
| entry: |
| %array = alloca [5 x i8], align 1 |
| %0 = getelementptr inbounds [5 x i8], [5 x i8]* %array, i64 0, i64 0 |
| call void @llvm.lifetime.start.p0i8(i64 5, i8* nonnull %0) #2 |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(14) %0, i8* nonnull align 1 dereferenceable(14) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i64 14, i1 false) #2 |
| store i8* %0, i8** @a, align 8 |
| call void @llvm.lifetime.end.p0i8(i64 5, i8* nonnull %0) #2 |
| ret i32 0 |
| } |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1 |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1 |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) #1 |
| |
| attributes #0 = { nounwind sspreq uwtable writeonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { argmemonly nounwind willreturn } |
| attributes #2 = { nounwind } |
