| # 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 %r1l |
| # Although R0L partially redefines R0Q, it must not mark R0Q as kill |
| # because R1D is still live through that instruction. |
| # CHECK-NOT: %r0q<imp-use,kill> |
| # CHECK-NEXT: %r2d = COPY %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, _ |
| |
| ... |
