| Kristof Beyls | e66bc1f | 2018-12-18 08:50:02 +0000 | [diff] [blame] | 1 | ; 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 |
| 2 | ; RUN: sed -e 's/SLHATTR//' %s | llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu | FileCheck %s --check-prefixes=CHECK,NOSLH --dump-input-on-failure |
| 3 | |
| 4 | declare i64 @g(i64, i64) local_unnamed_addr |
| 5 | define i64 @f_using_reserved_reg_x16(i64 %a, i64 %b) local_unnamed_addr SLHATTR { |
| 6 | ; CHECK-LABEL: f_using_reserved_reg_x16 |
| 7 | ; SLH: dsb sy |
| 8 | ; SLH: isb |
| 9 | ; NOSLH-NOT: dsb sy |
| 10 | ; NOSLH-NOT: isb |
| 11 | entry: |
| 12 | %cmp = icmp ugt i64 %a, %b |
| 13 | br i1 %cmp, label %if.then, label %cleanup |
| 14 | |
| 15 | ; CHECK: b.ls |
| 16 | ; SLH: dsb sy |
| 17 | ; SLH: isb |
| 18 | ; NOSLH-NOT: dsb sy |
| 19 | ; NOSLH-NOT: isb |
| 20 | if.then: |
| 21 | %0 = tail call i64 asm "autia1716", "={x17},{x16},0"(i64 %b, i64 %a) |
| 22 | ; CHECK: bl g |
| 23 | ; SLH: dsb sy |
| 24 | ; SLH: isb |
| 25 | ; NOSLH-NOT: dsb sy |
| 26 | ; NOSLH-NOT: isb |
| 27 | ; CHECK: ret |
| 28 | %call = tail call i64 @g(i64 %a, i64 %b) #3 |
| 29 | %add = add i64 %call, %0 |
| 30 | br label %cleanup |
| 31 | |
| 32 | cleanup: |
| 33 | ; SLH: dsb sy |
| 34 | ; SLH: isb |
| 35 | ; NOSLH-NOT: dsb sy |
| 36 | ; NOSLH-NOT: isb |
| 37 | ; SLH: ret |
| 38 | %retval.0 = phi i64 [ %add, %if.then ], [ %b, %entry ] |
| 39 | ret i64 %retval.0 |
| 40 | } |
| 41 | |
| 42 | define i32 @f_clobbered_reg_w16(i32 %a, i32 %b) local_unnamed_addr SLHATTR { |
| 43 | ; CHECK-LABEL: f_clobbered_reg_w16 |
| 44 | entry: |
| 45 | ; SLH: dsb sy |
| 46 | ; SLH: isb |
| 47 | ; NOSLH-NOT: dsb sy |
| 48 | ; NOSLH-NOT: isb |
| 49 | %cmp = icmp sgt i32 %a, %b |
| 50 | br i1 %cmp, label %if.then, label %if.end |
| 51 | ; CHECK: b.le |
| 52 | |
| 53 | if.then: |
| 54 | ; SLH: dsb sy |
| 55 | ; SLH: isb |
| 56 | ; NOSLH-NOT: dsb sy |
| 57 | ; NOSLH-NOT: isb |
| 58 | ; CHECK: mov w16, w0 |
| 59 | tail call void asm sideeffect "mov w16, ${0:w}", "r,~{w16}"(i32 %a) |
| 60 | br label %if.end |
| 61 | ; SLH: ret |
| 62 | |
| 63 | if.end: |
| 64 | %add = add nsw i32 %b, %a |
| 65 | ret i32 %add |
| 66 | ; SLH: dsb sy |
| 67 | ; SLH: isb |
| 68 | ; NOSLH-NOT: dsb sy |
| 69 | ; NOSLH-NOT: isb |
| 70 | ; SLH: ret |
| 71 | } |