| // RUN: %clang -target i386-unknown-linux -fstack-clash-protection -### %s 2>&1 | FileCheck %s -check-prefix=SCP-i386 |
| // RUN: %clang -target i386-unknown-linux -fno-stack-clash-protection -fstack-clash-protection -### %s 2>&1 | FileCheck %s -check-prefix=SCP-i386 |
| // RUN: %clang -target i386-unknown-linux -fstack-clash-protection -fno-stack-clash-protection -### %s 2>&1 | FileCheck %s -check-prefix=SCP-i386-NO |
| // SCP-i386: "-fstack-clash-protection" |
| // SCP-i386-NO-NOT: "-fstack-clash-protection" |
| |
| // RUN: %clang -target x86_64-scei-linux -fstack-clash-protection -### %s 2>&1 | FileCheck %s -check-prefix=SCP-x86 |
| // RUN: %clang -target x86_64-unknown-freebsd -fstack-clash-protection -### %s 2>&1 | FileCheck %s -check-prefix=SCP-x86 |
| // SCP-x86: "-fstack-clash-protection" |
| |
| // RUN: %clang -target armv7k-apple-linux -fstack-clash-protection -### %s 2>&1 | FileCheck %s -check-prefix=SCP-armv7 |
| // SCP-armv7-NOT: "-fstack-clash-protection" |
| // SCP-armv7: argument unused during compilation: '-fstack-clash-protection' |
| |
| // RUN: %clang -target x86_64-unknown-linux -fstack-clash-protection -S -emit-llvm -o %t.ll %s 2>&1 | FileCheck %s -check-prefix=SCP-warn |
| // SCP-warn: warning: Unable to protect inline asm that clobbers stack pointer against stack clash |
| |
| // RUN: %clang -target x86_64-pc-unknown-linux -fstack-clash-protection -S -emit-llvm -o- %s | FileCheck %s -check-prefix=SCP-ll-linux64 |
| // SCP-ll-linux64: attributes {{.*}} "probe-stack"="inline-asm" |
| |
| // RUN: %clang -target x86_64-pc-windows-msvc -fstack-clash-protection -S -emit-llvm -o- %s 2>&1 | FileCheck %s -check-prefix=SCP-ll-win64 |
| // SCP-ll-win64-NOT: attributes {{.*}} "probe-stack"="inline-asm" |
| // SCP-ll-win64: argument unused during compilation: '-fstack-clash-protection' |
| |
| int foo(int c) { |
| int r; |
| __asm__("sub %0, %%rsp" |
| : |
| : "rm"(c) |
| : "rsp"); |
| __asm__("mov %%rsp, %0" |
| : "=rm"(r)::); |
| return r; |
| } |