llvm/test/CodeGen/RISCV/saverestore-scs.ll

   1 ;; Check that shadow call stack doesn't interfere with save/restore
   2
   3 ; RUN: llc -mtriple=riscv32 < %s | FileCheck %s -check-prefix=RV32I
   4 ; RUN: llc -mtriple=riscv64 < %s | FileCheck %s -check-prefix=RV64I
   5 ; RUN: llc -mtriple=riscv32 -mattr=+save-restore < %s | FileCheck %s -check-prefix=RV32I-SR
   6 ; RUN: llc -mtriple=riscv64 -mattr=+save-restore < %s | FileCheck %s -check-prefix=RV64I-SR
   7 ; RUN: llc -mtriple=riscv32 -mattr=+f,+save-restore -target-abi=ilp32f < %s | FileCheck %s -check-prefix=RV32I-FP-SR
   8 ; RUN: llc -mtriple=riscv64 -mattr=+f,+d,+save-restore -target-abi=lp64d < %s | FileCheck %s -check-prefix=RV64I-FP-SR
   9
  10 @var2 = global [30 x i32] zeroinitializer
  11
  12 define void @callee_scs() nounwind shadowcallstack {
  13 ; RV32I-LABEL: callee_scs:
  14 ; RV32I-NOT:     call t0, __riscv_save
  15 ; RV32I-NOT:     tail __riscv_restore
  16 ;
  17 ; RV64I-LABEL: callee_scs:
  18 ; RV64I-NOT:     call t0, __riscv_save
  19 ; RV64I-NOT:     tail __riscv_restore
  20 ;
  21 ; RV32I-SR-LABEL: callee_scs:
  22 ; RV32I-SR:         call t0, __riscv_save_12
  23 ; RV32I-SR:         tail __riscv_restore_12
  24 ;
  25 ; RV64I-SR-LABEL: callee_scs:
  26 ; RV64I-SR:         call t0, __riscv_save_12
  27 ; RV64I-SR:         tail __riscv_restore_12
  28 ;
  29 ; RV32I-FP-SR-LABEL: callee_scs:
  30 ; RV32I-FP-SR:         call t0, __riscv_save_12
  31 ; RV32I-FP-SR:         tail __riscv_restore_12
  32 ;
  33 ; RV64I-FP-SR-LABEL: callee_scs:
  34 ; RV64I-FP-SR:         call t0, __riscv_save_12
  35 ; RV64I-FP-SR:         tail __riscv_restore_12
  36   %val = load [30 x i32], ptr @var2
  37   store volatile [30 x i32] %val, ptr @var2
  38   ret void
  39 }