| ; RUN: sed -e 's/SLHATTR/speculative_load_hardening/' %s | llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu | FileCheck %s --check-prefixes=CHECK,SLH --dump-input-on-failure |
| ; RUN: sed -e 's/SLHATTR//' %s | llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu | FileCheck %s --check-prefixes=CHECK,NOSLH --dump-input-on-failure |
| |
| declare i64 @g(i64, i64) local_unnamed_addr |
| define i64 @f_using_reserved_reg_x16(i64 %a, i64 %b) local_unnamed_addr SLHATTR { |
| ; CHECK-LABEL: f_using_reserved_reg_x16 |
| ; SLH: dsb sy |
| ; SLH: isb |
| ; NOSLH-NOT: dsb sy |
| ; NOSLH-NOT: isb |
| entry: |
| %cmp = icmp ugt i64 %a, %b |
| br i1 %cmp, label %if.then, label %cleanup |
| |
| ; CHECK: b.ls |
| ; SLH: dsb sy |
| ; SLH: isb |
| ; NOSLH-NOT: dsb sy |
| ; NOSLH-NOT: isb |
| if.then: |
| %0 = tail call i64 asm "autia1716", "={x17},{x16},0"(i64 %b, i64 %a) |
| ; CHECK: bl g |
| ; SLH: dsb sy |
| ; SLH: isb |
| ; NOSLH-NOT: dsb sy |
| ; NOSLH-NOT: isb |
| ; CHECK: ret |
| %call = tail call i64 @g(i64 %a, i64 %b) #3 |
| %add = add i64 %call, %0 |
| br label %cleanup |
| |
| cleanup: |
| ; SLH: dsb sy |
| ; SLH: isb |
| ; NOSLH-NOT: dsb sy |
| ; NOSLH-NOT: isb |
| ; SLH: ret |
| %retval.0 = phi i64 [ %add, %if.then ], [ %b, %entry ] |
| ret i64 %retval.0 |
| } |
| |
| define i32 @f_clobbered_reg_w16(i32 %a, i32 %b) local_unnamed_addr SLHATTR { |
| ; CHECK-LABEL: f_clobbered_reg_w16 |
| entry: |
| ; SLH: dsb sy |
| ; SLH: isb |
| ; NOSLH-NOT: dsb sy |
| ; NOSLH-NOT: isb |
| %cmp = icmp sgt i32 %a, %b |
| br i1 %cmp, label %if.then, label %if.end |
| ; CHECK: b.le |
| |
| if.then: |
| ; SLH: dsb sy |
| ; SLH: isb |
| ; NOSLH-NOT: dsb sy |
| ; NOSLH-NOT: isb |
| ; CHECK: mov w16, w0 |
| tail call void asm sideeffect "mov w16, ${0:w}", "r,~{w16}"(i32 %a) |
| br label %if.end |
| ; SLH: ret |
| |
| if.end: |
| %add = add nsw i32 %b, %a |
| ret i32 %add |
| ; SLH: dsb sy |
| ; SLH: isb |
| ; NOSLH-NOT: dsb sy |
| ; NOSLH-NOT: isb |
| ; SLH: ret |
| } |