| // RUN: llvm-tblgen -warn-on-skipped-patterns -gen-global-isel -I %p/../../../include %s -I %p/../Common -o /dev/null 2>&1 | FileCheck %s |
| |
| include "llvm/Target/Target.td" |
| include "GlobalISelEmitterCommon.td" |
| |
| // A REG_SEQUENCE whose super register class has no subclass containing the |
| // requested subreg index used to crash the GlobalISel emitter on an empty |
| // std::optional dereference. It now skips the pattern with failedImport. |
| |
| def bogus_sub : SubRegIndex<32>; |
| |
| // CHECK: warning: Skipped pattern: REG_SEQUENCE subreg index is incompatible with inferred reg class |
| def : Pat<(i32 (add GPR32:$a, GPR32:$b)), |
| (REG_SEQUENCE GPR32, GPR32:$a, bogus_sub, GPR32:$b, bogus_sub)>; |
