| # RUN: llc -verify-machineinstrs -run-pass regallocfast -mtriple s390x-ibm-linux -o - %s | FileCheck %s | |
| --- | | |
| @g_167 = external global [5 x i64], align 8 | |
| define void @main() local_unnamed_addr { | |
| ret void | |
| } | |
| ... | |
| # Make sure the usage of different subregisters on the same virtual register | |
| # does not result in invalid kill flags. | |
| # PR33677 | |
| --- | |
| name: main | |
| alignment: 2 | |
| tracksRegLiveness: true | |
| registers: | |
| - { id: 0, class: gr128bit } | |
| - { id: 1, class: gr64bit } | |
| - { id: 2, class: addr64bit } | |
| # CHECK: $r0q = L128 | |
| # CHECK-NEXT: $r0l = COPY renamable $r1l | |
| # Although R0L partially redefines R0Q, it must not mark R0Q as kill | |
| # because R1D is still live through that instruction. | |
| # CHECK-NOT: implicit killed $r0q | |
| # CHECK-NEXT: $r2d = COPY renamable $r1d | |
| # CHECK-NEXT: LARL | |
| body: | | |
| bb.0: | |
| %0.subreg_hl32 = COPY %0.subreg_l32 | |
| %1 = COPY %0.subreg_l64 | |
| %2 = LARL @g_167 | |
| STC %1.subreg_l32, %2, 8, $noreg | |
| ... |